The gas phase decomposition of sulfuryl chloride at 600 KSO2Cl2(g)SO2(g) + Cl2(g)is first order in SO2Cl2 with a rate constant of 2.80E-3 min-1.If the initial concentration of SO2Cl2 is 2.44E-3 M, the concentration of SO2Cl2will be M after 620 min have passed.
The gas phase decomposition of sulfuryl chloride at 600 K SO2Cl2(g)SO2(g) + Cl2
Causes of Economic Bubble & Bitcoin Versus Normal Currency Essays
Causes of Economic Bubble & Bitcoin Versus Normal Currency Essays.
Video Assignment 1 (Analysis of Video)Select any video from the Video Links and write a two-page double-spaced synopsis on the content of the video.Answer the following questions:Identify one important concept, research finding, theory, or idea that you learned while viewing this video.Why do you believe that this concept, research finding, theory, or idea is important?Apply what you have learned from this video to some aspect of your life.Video Assignment 2 (Analysis of Video)Select any video from the Video Links that you have not yet written about and write a two-page double-spaced synopsis on the content of the video.Please answer the following questions:Identify one important concept, research finding, theory, or idea that you learned while viewing this video.Why do you believe that this concept, research finding, theory, or idea is important?Apply what you have learned from this video to some aspect of your life.Please use one video each for the taskshttps://www.youtube.com/watch?v=RGBtfkbgtyM&feature=youtu.behttps://www.youtube.com/watch?v=X1sjFHEl5GI&feature=youtu.behttps://www.youtube.com/watch?v=fsrtB5lp60s&feature=youtu.behttps://www.youtube.com/watch?v=jpe-LKn-4gM&feature=youtu.behttps://www.youtube.com/watch?v=wBYv6rdAdS4&feature=youtu.behttps://www.youtube.com/watch?v=XvIg5MK-8yY&feature=youtu.behttps://www.youtube.com/watch?v=bBC-nXj3Ng4&feature=youtu.behttps://www.youtube.com/watch?v=TXrOpjG4dUs&feature=youtu.behttps://www.youtube.com/watch?v=I5ZR0jMlxX0&feature=youtu.be
Causes of Economic Bubble & Bitcoin Versus Normal Currency Essays
The Politics of Women’s Health Research Paper
essay help online The Politics of Women’s Health Research Paper. Introduction Background Women experience more health complications than men. This could be as a result of the multi-diversity of their body functions or the kind of gender treatment that they are exposed to. Women’s bodies are more sensitive and fragile than men’s and therefore, require more care. A study on alcoholism for instance, has shown that alcohol presents more complications to female users than to their male counterparts. Women get drunk quicker, get addicted faster and suffer abuse-related consequences sooner than men. Apart from the normal health complications shared between men and women, women suffer increased risk of reproductive problems and a more severe damage to the liver than in men and eventually, earlier deaths from these complications than in men. In addition to these, women are prone to increased risk of breast cancer, menstrual disorders, fertility problems and miscarriage in case of pregnancy. Women also suffer most from matters of passion like failed relationships or death of friends or family members. They will develop stress-related complications like ulcers or heart problems easier compared to the men. Of significant importance to this study is the role of society in women’s health. Women are still perceived to be the weaker sex in both the developing and the developed societies. Only the extents and rates differ. Because of this, they get subjected to ill treatment. Some of it is so severe that it affects their health. In most societies for instance, women suffer domestic violence, girls are married off at tender ages and denied equal rights to education. This could be so traumatizing to the child that she develops mental problems or complications during sexual intercourse or delivery because her reproductive organs and system are not fully developed. Purpose of the Research This research aims at finding out the extent to which attention to women’s health is compromised by society and policy decisions. Society here includes men and women, their socialization towards women’s place in society and the role they play in the deprivation of their rights regarding health care. Policy makers include the ruling elite and the subsequent bodies mandated with the role of policy formulations. Research questions In order to achieve this purpose, the following question will be used to guide the study: how has women’s healthcare been politicized and therefore compromised by society and policy makers and how has gender inequality contributed to this? Methodology The information in this paper has been gathered from secondary sources. These include books and articles by other writers based on prior research. Only information about the women and their health care and influence by society and gender inequality has been used. The problem of healthcare among women. Women face a big problem in reception of health care. Coupled with this is the fact that they are at more health risk exposure than the men and by the men. Unfortunately, this has been institutionalized by society and policy makers as acceptable. We shall examine this predicament in details. Differences in vulnerability between men and women Previous studies by various groups have shown that women and men differ in their rates of exposure and vulnerability to similar health conditions. A study by the Global Burden of Disease showed that out of 126 health conditions, 68 of them had a 20% discrepancy between men and women. These diseases include HIV, cancers, eye sight diseases, migraine, mental health, muscle and bone strength, nutrition and burns. Some of these conditions are determined by biological differences, while a number of others are determined by how society has socialized women and men into gender roles. These gender roles are supported by norms that discriminate on masculinity or femininity. Then power relations take over, according privileges to men, thus affecting the health of women and men altogether. Women are known to be more sensitive to chemicals when exposed than the men. This is because there are differences between the two in absorption, metabolism and excretion of fat soluble chemicals. In the case of antiretroviral, women suffer more side effects like skin rash and liver toxicity. According to Astbury (2002), women are more likely to suffer depression than men. This however, is perceived as a biological consequence and therefore is not given much attention. Social factors like violence, partner support, overwork and the social experience of motherhood and nurture of children have been discovered to contribute a lot more to depression. These are not biological determinants and therefore, should not be shoved away but rather be given the medical attention they deserve. Society and gender Social stratifies in many communities define people based on who they are on dimensions that they have no control over cannot change. The harm with this kind of stratification is that a group of people in the same classification are slumped together and treated in a given way. This is not because they deserve such treatment, but because they belong to that group which unfortunately, they cannot get out of. This is the situation that women in most societies find themselves in. Typical in almost all societies is that women do not own land. If they do, it is less than for their male counterparts. This translates to wealth and property. They are more burdened with tasks of care giving, reproduction and ensuring security survival of their families. In return, they are less fed, less educated, more restricted and less paid at work. They have less access to political power and their political participation is limited either directly by the male figures in their lives or indirectly by the amount of responsibilities at their disposal. This way, women are left with few options when confronted with health problems. The kind of medical attention they can receive is usually dictated upon them. At a closer look, one will find that even the biologically determined diseases are supported by gender social determinants. A condition such as blindness, as much as any woman could contact an eye disease, social factors like women’s lesser access to eye care services and caring for children infected with trachoma increases their rates of infection. In the case of HIV, according to Gruskin and Tarantola (24-29), vulnerability results from social, cultural, economic, political and other factors that can increase the degree of infection, less access to health care and support of infected ones. All these put the woman on the receiving end. This is according to Ogden et al (333-342). Women in the society are seen as objects rather than subjects. They have been socialized to accept this status and many of them shy away from seeking health care. Women’s health conditions are perceived to be normal by the families or the women themselves and therefore do not seek medical attention, according to Lyer (17). Women could be aware of the health concern but choose to keep silent about it for fear of reactions from family and society. For example, women with TB in Vietnam, according to Long et al (p69-81), do not disclose their status for fear of not getting married if people knew of their conditions. When women and their families acknowledge about their health problems, financial berries come in. preferential attention is given to the male counterparts at their expense, even for a non health related issue as noted by Lane (151-182) Most societies exert importance to male children than female. Some go as far as murdering girls at birth. This is a health concern. In parts of East and South Asia where this practice is most inherent, there is now a crisis of female shortage. This drastic decline in sex ratios has led to outlawed practices like kidnapping of women, forced marriages, girl-trafficking and intensified dowry payment that have made the girl child a material possession. The social expectation of what boys should and should not do can be directly linked to the behavior leading to the spread of HIV/AIDS and gender based violence. Men are freer and unsanctioned when it comes to matters of sex. They do not expect to be accountable and responsible to their wives. On the other hand, women are exposed to increased health risks during such rituals as genital mutilation, marriage and child birth. Mutilation and marital rape which are more common in most communities are painful experiences meant to “humble” the woman and make her feel submissive to the men. With women perceived as objects, especially sex, widowhood is another challenging time for any woman. The women are subjected to various practices meant to demean and subordinate them. This becomes worse considering that most of these women are immediately disinherited and so lack the capacity to seek medical care. Some of the practices they are subjected to are wife inheritance and ritual cleansing. In some cases, the women are granted conditional access to their homes and property upon fulfillment of these conditions. Policy and inequality in healthcare In the case of HIV/AIDS, we see a fail in the policy sector. Most governments are still conservative in addressing matters of sexuality and tend to shy off from addressing them head on. They should enforce programs that advocate for abstinence and faithfulness or use of the condom. According to Kelly (36), in marriages, many men will refuse to use condoms, even when they engage in risky sex behavior. In most societies (apart from the few western societies) there is no law to protect this woman whose husband is exposing her to STIs and other infections. In return, she will suffer violence for objecting to the needs of her husband. In an effort to end maternal deaths, rape, coercive sex, violence against women and forced early marriages for the girl child, sustained policies and programs must be implemented to change people’s attitudes towards relationships, gender equality, mutual respect and respect of human rights. Promoting gender equality To remedy this situation, a number of initiatives have been adopted by various countries to reduce the effects of gender inequality in health care. In Sweden for instance, gender relations are taken into account in the public, private and voluntary sectors. It has a Division of Gender Equality within the central administration to look into matters of gender equity in service delivery and resource allocation. Gender discrimination is one of the agents of poverty, a major obstacle to sustainable global development. Sweden in return has expressed an improved system of equality and equity of both genders. This shows that gender mainstreaming has to be institutionalized and effectively implemented. In fact, Sweden’s public health policy is to raise the level of and reduce and reduce inequalities of people’s capability and freedom to choose their lives and pursue their goals. A number of approaches have been put forward. If well implemented, they could help promote the much anticipated equality among the two genders. The essential structural dimensions of gender inequality need to be addressed. This is by transforming the framework of women human rights through effective implementation of laws and policies. Attention should also be given to the access, affordability and availability of health care to women. These services should not be subject to changes during economic reforms. They should be treated as basic and necessary. Women are the backbone in care giving within the family. Because of these, many are exposed to health dangers from those they care for. Programs should be initiated to involve the men too in the care giving responsibilities. Women need to be engaged in the decision making processes from grassroots to international level so that they can be in a position to voice women’s challenges and sees redress. Gender stereotypes need to be challenged. Boys and men should be included in equality debates so that they can support the cause of gender equality (Greene et al p54). Multilevel strategies can be adopted to change the norms and practices that harm women’s health directly or indirectly. Differential health issues between men and women should be treated differentially. Some biological factors interact with social factors to aggravate these health risks, so there should be policy to address these differences. The social biases that work to increase these risks should be eliminated. Because these social factors occur in social setting, people and communities should be empowered to take these initiatives. These can only be achieved by comprehensive programs to enlighten the people on the importance of such initiatives. Gender Biases in Research The issue of women health crane has not been adequately addressed before and even now. This is because there has been a slow recognition of health issues that affect women in particular. It is only recently that factors like gender violence, menstruation and other characteristics unique to women began being factored in as determinants of women health. There has also been a lack of recognition of the interplay between gender and social factors and the effect they have on women health. Conclusion This research is important in showing the effects of gender inequality on women health. Women ailments have been ignored as normal, resulting from normal pathogens and biological functions. Much insight has not been given therefore, in studying the unique characteristics attributed to these health conditions. This research has shown that women health problems are an inter link between the normal pathogens and consequences of gender inequality manifested through social gender biases and biased policy making institutions. In order to change this system, there needs to be an over haul in the mind set of both the men and women, and societal norms and practices. A gender balanced society needs to be instituted, whereby every one respects and appreciates the other. Besides, the role of women in society has to be appreciated and not looked down upon. Women are the care givers, they are the ones who carry and bring life. For these reasons, they deserve an even better health care as they are at more risks with these core functions that they perform. Works Cited Astbury, Jill. Mental health: Gender Bias, Social Position, and Depression IN SEN G, G. A., ÖSTLIN P (Ed.), Engendering International Health. Cambridge: MIT Press, 2002. Print. Greene, Mehta., Mehta, Monica., Pulerwitz, Julie., Wulf, D., Bankole, Akinrinola.The Politics of Women’s Health Research Paper
Should Higher Education be Free for Everyone?
Introduction By the end off this essay I will be explain how the system work I will be talking about how education can effect people i will also carry out a research on the background history of how the higher education system and its funding in UK over past years and I will analyse some off the point which I have researched over the internet and analysed .I will show the advantages and disadvantages if higher education should be free Higher Education University is an important right of passage – an opportunity to establish independence, to study on areas of interest and hopefully to do so in, stimulating environment meeting new people, and considering new ideas and .I think it is important that everyone should attend this stage Higher education is provided for free in by most off the countries, or maybe at a a considerate price , but not in the UK, The UK has presumably more money at the institutions’ disposal. However, it also means that higher education may be not that unaffordable to many people at a lower circumstances. Scholarships and loans As we how that there is scholarships and loans available now but scholarships are obviously not going to be available to everyone and the loans are the loan is a big debt after graduating so as you can see the student don’t have a chance in either however to soclize the higher education in the U.K we will need a big overhaul system that will handled with care. The Government has said half of young people are getting into higher education is failing. Far from rising by around 4 per cent a year. maybe this is why higher education is not free the government cant afford to invest money on student education and student are failing . Well we should consider education to be an investment. Statistics suggest that, on average, these with a higher education earn higher incomes. THE Background When the New Labour took power in 1997, students had means-tested maintenance grants and no fees. After a year they took off the grant was gone and a means-tested fee regime of up to £1,000 a year after 2004 the higher education pushed it up to £3,000 and this will increase very academic year. As you see that huge increase from 1997 to 2009 the normal fees was 1,000 than was increased to £3250 The means testing will allow poor people and people with low income to go university .Those how are from low income families should still be able to attend university however the middle classes benefits the most from university education At the moment there has been a very high drop out rate from university and the reason is because students have to drop out because they can’t afford the fee Funding Must universities in Britain are state financed, with only one private university “University of Buckingham” where the government does not support the tuition fees. Undergraduate and posgradute Undergraduate students and the students from EU countries have to pay university fees up to a maximum of £3,225 09/10. Loans are available to students depending on there income assist. This may only be used for tuition fee costs. However in Scotland it different they have their fees paid by the students awards agency for Scotland rather than student Finance.. However postgraduate students are responsible for all there fees but however postgraduate have a variety of scholarship and assistantship schemes they might chooses from that may provide support e.g Economic and social research council and many more .The main sources of funding for postgraduate students are through research councils Advantages of making Higher Education Free Here are some off the advantages points Higher Education leads to situations this is when students graduating end up having extremely high debt on them this was lead to the student loan . Also if higher education was free student will take extra courses which is more effectively It will decrease the students from drop out ,and push up the passing rate This will than boost the economy with the amount off student graduating from there universities with a degree There will be equal opportunity to everyone to attend higher education this means the poor people and the low-income families will have the right to apply .As you can see that the middle class people are using this opportunity using the money and leaving the poor and low incomes missing the opportunity Disadvantages of making Higher Education Free There will be less jobs available for everyone the reason because the people who didn’t attend university was a high number and by making the higher education free it will increases the graduates and will than decreases the amount of jobs available The disadvantage about free higher education is that the government will be paying it but however the stistics shows that half off the higher education student fail there course every year this will than show an down decrease in the economic structure Supply and demand The Supply and demand is an economic of price in a market. It explains that in a market, price will function to equal the quantity demanded by consumers, and the quantity supplied by producers, resulting in economic equilibrium of price and quantity. The demand schedule, shows a graphically as the demand curves , represents the amount of goods that buyers who wants to purchase at different prices. The price of goods remain the same however Following the law demand the demand curve is almost always represented as downward line this means that if the price decreases the consumers will buy more of the good. This means that if higher education was to be free the demand on the education will increase .The reason because the people who didn’t mange to go for reasons like the fees for the courses they will have an opportunity to apply however there will be a very high demand as because the students use to pay for it now it free. As you can see on the graph Excess Supply If the price is set too high, excess supply will be created within the economy and there will be allocative inefficiency. , but those consuming the goods will find the product less attractive and purchase less because the price is too high This is how it looks like when higher education is not free ,the fees are too high and student will not be able to attend just how it shown on the graph Shifts A shift in a demand or supply curve occurs when a good’s quantity demanded or supplied changes even though price remains the same. For example if the fees for the university was FREE and the quantity of off student applying shows the demanded However this shows that if higher education was free there will be an increase in demand Conclusion In conclusion I have identified how higher education should be free to students managed to find out what the student thought about free education I also showed what the advantages was for the free education and the disadvantages I managed to get some ideas however I also used the supply and demand and excess supply I managed to compare them and analysed them .I researched the background of the higher education and got some important information which I also analysed . http://www.timeshighereducation.co.uk/story.asp?sectioncode=26
Solar-Powered Water Cooler System Case Study
Introduction The design of a solar-powered water cooler is based on the normal components and operations of cooling systems. A solar-powered water cooler has two major parts. These include the cooling unit and heat source. The water uses the thermodynamic cycle in the same way as electricity-powered conventional generators. On the other hand, the solar heat source is designed using a flat plate with a focused collector to concentrate solar energy and supply it to the device. The coefficient of performance will be used as the performance evaluation index. It refers to the ratio of cooling provided to heat supplied (Abbad et al. 1228). The cooling component, as well as the cooling ratio, can be defined as follows: Cooling ratio = In order to define the performance of the solar collector, a heating ratio is determined as follows: Heating ratio = The product of the above two ratios defines the overall performance ratio of the solar-powered water cooler as shown in the following equation: Overall performance ratio = Get your 100% original paper on any topic done in as little as 3 hours Learn More During the analysis of the designed water-cooler components such as the collector and generator, the concepts of cooling ratio and heating ratio will be essential (Choudhury et al. 559). Countries that lie within the latitude of the tropics receive direct sun, and solar radiation is evenly distributed throughout the year. Many countries within the tropics are developing in terms of economy. Their infrastructures are still poor and the supply of traditional electricity is limited, especially in rural areas. Conservation of water resources in the area is highly needed. Even though normal refrigerators are available at affordable rates, a limited supply of electricity hinders their use. The design of a solar-powered water cooler will help in providing water-cooling services to the people in rural areas as they make use of the abundant supply of solar energy throughout the year. By creating a successful solar-powered water cooler design, a long-lasting solution will be provided to enhance current water-cooling systems (Parash, Baredar and Mittal 39). Methods Ideal Cycle Analysis In the ideal cycle analysis of the ammonia water absorption approach, the main assumption is that all thermodynamic processes are reversible. Figure 1 and figure 2 below show the principle operation of the solar-powered cooler. The first figure is used to show the operations of the cooler during the regeneration phase, while the second figure illustrates its operations during the cooling phase. In this context, the transfer of energy occurs in the form of heat at three different levels of temperature. The first level is the atmospheric temperature denoted by Ta. At this temperature, the device’s condenser and absorber reject the heat. Another temperature level occurs where the device takes heat from the cold chamber; it is denoted by Tc (Abbad et al. 1234). The third level of temperature occurs when the generator receives heat, and this is denoted by Tg. Fig. 1. The figure shows the operation of the cooler during the regeneration phase. Fig. 2. The figure shows the operation of the cooler during the cooling or refrigeration phase. To understand the ideal cycle analysis, we can use the equivalent machine to create an expression for the same. The arrangement indicated in figure 3 below provides an illustration of a machine’s reversible performance, which corresponds to that presented in the absorption plant for water cooling. In this context, a reversible heat engine gets heat energy whose quantity is Qg at the temperature Tg (Choudhury et al. 563). The heat is rejected at the temperature Ta, at which point the work whose quantity is Wga is produced, as shown in the diagram below. Fig. 3. A figure showing an equivalent absorption machine. Based on the above diagram we can model the following equation. We will write a custom Case Study on Solar-Powered Water Cooler System specifically for you! Get your first paper with 15% OFF Learn More ………………………………………………………i In the above equation i, all temperatures are determined using the thermodynamic scale of temperature. On the one hand, a reversible cooler receives heat quantity Qc at Tc. The rejection of the heat occurs at a temperature of Ta. On the other hand, the absorbing quantity of work is denoted by WCA. Coefficient of performance based on the above figure 3 can be expressed using the equation ii below. …………………………………………………………ii Supposing Wga is made equal to –WCA, then the developed plant in figure 3 above will be equivalent to the absorption cooler. Consequently, the combined coefficient of the plant will be defined using Qc/Qg. Combining the two equations gives the following expression: …………………………………………………….iii The practical importance of the above equation is that it is possible to calculate Ta if Tg is known. In this case, the Ta is given a fixed value, but the designer chooses the convenient value of Tc. Design of the Solar-Powered Cooler Configuration Choice As specified previously, a solar-powered water cooler has two constituents, the heating unit, and the cooling unit. The solar energy unit operates based on the flat plate collector. It is a flat-surfaced panel that absorbs direct sunlight radiation and diffuses it. To control heat loss, the plate has a transparent cover and an insulation material. The plate absorbs solar energy and the energy is changed into heat. Subsequently, the heat is removed in the form of steam or vapor (Parash, Baredar and Mittal 44). The most suitable device for this experiment is the flat plate collector placed in a fixed position. Moreover, it is more affordable, compared to the focusing or parabolic collector. For the purposes of the study and the fact that the experimental design targets a rural area without electric power, the intermittent absorption cooling system is the most appropriate. Alternating Cooling The alternating cooling cycle involves two key operations, regeneration and cooling. Regeneration occurs when the coolant-absorbent fluid heats with the aim of driving off the coolant vapor and condensing it in a different container. Cooling occurs during the vaporization of the coolant liquid and this creates a cooling effect in the evaporator. In contrast, the absorbent re-absorbs the coolant. To enhance the simplicity of the experimental device, the condenser will work as the evaporator while the generator will work as the absorber. Operation of the System To understand the operation of the solar-powered water cooler system, see the diagram in figure 4 below. Fig. 4. Diagram illustrates the experimental unit of a solar-powered water cooler. The above diagram is useful in illustrating the regeneration and cooling cycles of the system. The valves A and B play an important role during heat cycles. When regeneration takes place, valve A opens while valve B closes. The flat-plate collector supplies heat to the strong solution in the generator and produces steam at high pressure. The insulated pipes transport the weak solution from the top-header to the device’s bottom-header. Since water has lower volatility than ammonia, the top header vapor has a higher concentration of ammonia than water. The ammonia vapor then passes into the system’s condenser, immersed in a cold-water tank to maintain a low temperature (McCarney et al. 35). During the process, the pressure remains uniform in the entire system. Valve A closes when the heating stops, and this causes a reduction in vapor pressure within the generator. The ammonia concentration in the generator is now less, compared to how it was before. It is important to remove the cooling tank before refrigeration occurs, and this would cause valve B to open. At this point, the condenser now operates as the generator. The ammonia solution changes into vapor due to the fact that the pressure difference is enhanced between the generator and evaporator. The device’s evaporator supplies the necessary heat energy for the vaporization of ammonia. This helps in producing the desired cooling effect. The ammonia gas is taken to the generator’s bottom head through the pipe for the incoming vapor facilitates the absorption. This completes the full cycle of operation. In order to accommodate the intermittent availability of solar power, cooling occurs during the day, and regeneration occurs during the night when solar power is unavailable. Regeneration Phase From figure 5 below, the temperature of the condenser is 86°F and the saturation of pressure of dry ammonia at the same temperature is 170 Pa. It is possible to determine the point 2 of the thermodynamic cycle because its pressure and the ammonia concentration are known. On the other hand, point 3 has a fixed value at the maximum temperature achieved by the collector, which is 189°F. The values are used to determine point 3 as well as the concentration of the solution, which is 0.40. Fig. 5. The figure illustrates the ideal thermodynamic cycle. Cooling Phase of the Cycle In an ideal context, the cooling or refrigeration phase entails that the cooling of the solution is done at a pressure of 45 Pa. when the concentration is 0.40 at a temperature of about 103°F. This is defined at point 4, and the cooling cycle becomes complete through the 4-1 process when ammonia vapor is turned into a solution at a temperature of 170°F. Specifications of Collector and Generator The specifications of the collector and generator of the water cooler determine the compactable level of the system (Maxime et al. 118). Therefore, the collector-generator area will be 1.2 meters by 1.2 meters. Black-iron pipes are used in order to control the corrosion aspect and the issue of high pressure, which is related to concentrated ammonia solution. A 1.2 meter by a 1.2-meter copper sheet with a thickness of 18 millimeters will be chosen as the collecting plate. To prevent the dissipation of the collected solar energy, the plate will be painted black. The plate is soldered with 12 tubes having diameters of 25mm at an interval of 0.1 meters. To enhance the effective separation of water from ammonia vapor, the design will use a 0.1-meter pipe for the top header. This 1.42-meter-long pipe will provide a liquid surface area of 0.145 meters squared whenever the header is half full. A pipe 50 mm in diameter and 1.37 meters long will be used for the bottom header. The diagram in figure 6 below shows the arrangement of the collector and generator (McCarney et al. 38). Fig. 6. The illustration shows the arrangement of the system’s collector and generator. In order to prevent the heat loss at the back of the collector and generator, 0.1-meter thick polystyrene foam will be used as the insulation material. Thermal insulation materials will also be used at the bottom and the top headers. The same applies to the collector’s ends. The glass covers have a thickness of about 6 mm, similar to that of window glass. To allow for maintenance and adjustments, the glass covers will be removable (Sarbu and Sebarchievici 409). In addition, the generator will be fixed at an inclination angle of 200 to the horizontal plane. To collect maximum solar energy, the unit will be placed in the sun with the surface facing due south. The Generator’s Volume To determine the quantity of aqueous ammonia needed in the system, the volume of its generators will be calculated based on the dimensions of the pipes used to develop it. The calculation of the generator’s volume will also help in determining the liquid levels of the generator during the cycle. Half Full Top Header Volume = (0.185 X 0.012 X 0.002) = 4 X 10-6 m3 Volume of the 14 risers is given by: (14 X 0.1m X 0.0001m2) = 0.00014 m3 The volume of the bottom header is given by: (0.114 X 0.0006m2) = 6.8 X 10-5 Total volume = (4 X 10-6 m3 0.00014 m3 6.8 X 10-5) = 0.000212 m3 Surface Area of the Liquid When the Top Header Is Half Full The surface area of the liquid is given as shown below: Area = (0.102 m X 1.422 m)= 0.145 m2 Specific Volume of Aqueous Ammonia Volume at point 1 in figure 5, V1 is given by: V1 = 0.0012 m3/kg. Point 2 volume, V2 is given by: V2 = 0.00129 m3/kg. Point 3 volume, V3 is given by: V3 = 0.00127 m3/kg. Point 1 volume, V4 is given by: V4 = 0.00119 m3/kg. Liquid Level in Generator It starts with 0.0181 m3 of 0.46 aqueous ammonia at 86°F Its weight is 0.639/0.0192 = 33.281 pounds = 15kg. The volume of 15 kg of 0.46 aqueous ammonia at 170°F is 33.281 x 0.205 = 0.682 ft3 = 0.193 m3 Increase in volume is 0.193 m3– 0.0181 m3 = 0.1749 m3 Rise in liquid level is 0.0131/0.477 = 0.027 m. When concentration, X = 0.46. Weight of ammonia weight of water = 15 kg. Therefore, weight of ammonia = 6.9 kg. Weight of water = 8.1 kg. When concentration X = 0.40. Weight of ammonia = 5.4 kg. Weight of water = 8.1 kg. Total weight = 13.5 kg. -32- Therefore, the weight of distilled ammonia = 1.5 kg After the distillation of 1.5 kg of the ammonia, there will be 13.5 kg aqueous ammonia at a concentration of 0.40 at a temperature of 139°F. Volume is now given by V = 29.9 X 0.02 = 0.605 ft3 = 0.071 m3 Therefore, there is a decrease in volume from the initial volume at point 1 with a value of 0.00096 m3. The volume of 13.5 kg of aqueous ammonia at a temperature of 103°F is = 0.016 m3 Therefore, the decrease in volume below the first volume at point 1 is valued at 0.002 m3. Heat of Generation Let enthalpy of 13.5 kg of 0.40 aqueous ammonia at the temperature of 189°F = H3, enthalpy of 1.5 kg of ammonia vapor at the temperature of about 178° = HA, and the enthalpy of 15 kg of 0.46 concentrated aqueous ammonia at 86°F = H1. From figure 5 above: Hl = 33.281 x (-55) = -1830 Btu. = – 1930 KJ HA = 3.328 x 627 = 2086 Btu = 2201 KJ H3 = 29.953 x 75 = 2246 Btu = 2269.7 KJ Therefore, total heat generation, HT= H3 HA – Hl = 6162 Btu = 6501 KJ The global solar radiation on the horizontal plane of the earth on a daily basis is given by: Radiation = 400 Cal.cm.-2day -1. This is in a 1.2 meter by 1.2-meter plate surface in a day that provides energy = 24055 KJ each day. It implies that the incident of solar energy on the cooler’s collector is about 3.7 times the generation heat. Conclusion It can be concluded that the solar-powered water cooler can easily handle a refrigeration load of 15 kg when safety factors are included. It can use an evaporator with a capacity of less than 4 HP and a condenser of less than 3 HP. The weight of the ammonia solution needed is about 15 kg. For the purposes of experimental design and cost factor, the cooler is created in a small size to establish the possibility of developing a large solar-powered system that will provide commercial services in remote areas. Works Cited Abbad, Brahim, Yahi Ferhat, Bouzefour Fateh and Maamar Ouali. “Design and Realization of a Solar Adsorption Refrigeration Machine Powered by Solar Energy.” Energy Procedia 48.1 (2013): 1226-1235. Print. Choudhury, Biplab, Saha Bidyut, Chatterjee Pradip, Jyoti Sarkar. “An Overview of Developments in Adsorption Refrigeration Systems Towards a Sustainable Way of Cooling.” Applied Energy 104.1 (2013): 554-567. Print. 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