Pdf design of solar adsorption refrigeration system with cpc and. The modeling and simulation of a solar powered adsorption refrigeration system using three types of collectors flat plate, evacuated tube, and parabolic trough collectors, with activated carbonmethanol as the adsorbentadsorbate pair has been undertaken in this study. For the lowtemperature solar heat source, under 100c, adsorption refrigeration technology is a good solution for refrigeration. Chinnappa 1961 investigated intermittent solar refrigeration system theoretical with absorption cycle for ammoniawater and ammonialithium nitrate combinations and compared the results with experimentally. In a in a cycle with heat recovery, the reactor at the beginning of the adsorption phase releases heat to. Design of solar adsorption refrigeration system with. Among the adsorbent refrigerant, the activated carbon and ethanol is applied. Adsorption systems can be activated by a heat source with a temperature as low as 50c 122f, while the heat source temperature for an absorption system should be at least 90c. One of them is the rate of heat transfer which is the most important. In addition to the features and the basics of arss, the following topics have been covered such as characteristics of working pairs, trends in improving the heat and mass. Especially simple is an adsorption cycle using the solid adsorbent zeolite and the refrigerant water.
An automatic solar tracking device with a parabolic trough was manufactured and applied in the system to improve the efficiency of the solar collector. Experimental study of a solar adsorption refrigeration unit. They are also noiseless, noncorrosive and environmentally friendly. Adsorption chiller for solar air conditioning youtube. According to the cooling demands, it can supply airconditioning and freezing. Solid adsorption system, one of alternative refrigeration systems, is utilized to provide cold for refrigerator or airconditioner and can be operated by assistance of solar heat. Adsorption refrigeration and air conditioning cycles have earned considerable attention due to its ability to utilize low temperature heat source and for the. A fin tube type solar adsorption refrigeration system, cn 202209810 u. In order to make the adsorption system more suitable to use solar energy to supply cooling continuously during daytime, a new adsorption system without refrigerant valves is being developed in sjtu recently. In this research an experimental study of a solar ad sorption refrigeration system was performed with three different types of activated carbon as an adsorbents paired with methanol as the adsorbate. New opportunities for solar adsorption refrigeration. The adsorber desorber are the important role in this system. Jun 10, 2017 solar vapour absorption refrigeration system working solar vars system solar vapour absorption.
The operation principle of the solid adsorption refrigeration system utilizing solar heat is shown in fig. Instead of using electricity, oil or gas to drive the adsorption of refrigeration machines, solar thermal energy solid adsorption, activated charcoalmethanol is an attractive alternative. This system uses a mobile adsorber, which is regenerated out of the refrigeration cycle and no condenser is applied, because the solar regeneration is made in the ambient air for the regeneration, a sk14 solar cooker is considered. Because of the fact that vacuum solar tubes are available at economic values, it is our belief that due to their high efficiencies we can make a difference. In this study, multidimensional mathematical models have been generated to predict the coefficient of performance cop value of the sar system as function of the. Review on study of solar powered adsorption refrigeration system. Experimental system of solar adsorption refrigeration with. Experiments on solar adsorption refrigeration using zeolite and water siegfried kreussler and detlef bolz laboratory for solar energy, university of applied sciences luebeck, stephensonstr. Pdf experimental analysis of zeolite base solar vapour. Dambhare2 1,2pvpit, bavdhan, pune abstractthe sun is an outstanding energy source for mankind. However, the cop of the prevailing solar adsorption refrigeration system is quite low. Abstract the solar adsorption refrigeration sar system has economical and environmental aspects that motivate many researches to investigate its capability in cooling system design. Solar adsorption refrigeration is an option to overtake the drawbacks of the conventional cooling system. Experimental study of solar powered adsorption refrigeration.
In such systems, the compressor of a conventional refrigeration system is replaced by an adsorber. International journal of renewable energy research rekiyat. Factors considered in the design and construction of the solar adsorption refrigeration system includes. Refrigeration technology about solar adsorption, absorption. Solar adsorption refrigeration system is useful for requirements such as icemaking, air conditioning, medical and food reserve system in remote areas 2. The use of thermal driven systems helps to reduce the carbon dioxide emission from combustion of fossil fuels in power plants. The system was able to achieve a cold room temperature of about 1oc. Both materials are cheap and neutral to the environment. Performance prediction of solar adsorption refrigeration. Adsorption cooling is a thermally driven refrigeration system, which can be powered by solar energy as well as waste heat.
Design of solar adsorption refrigeration system with cpc and study on the heat and mass transfer performance. Refrigerator which runs on electricity provided by solar energy is known as solar refrigeration. The simple traditional cycle is a type of intermittent refrigeration cycle, which is suitable for the utilization of solar energy, because solar energy is also a type of intermittent energy. Solar adsorption refrigeration sar system modeling. The objective of work is to understand the different parameters which may affect on the performance the solar adsorption refrigeration system and enhancement by taking proper parameters for the. Performance study of a solar adsorption refrigeration system.
The flat plate collector powered adsorption refrigeration system gave average values of refrigeration effect as 4814. Adsorption refrigeration has two processes, which are the heatingdesorbing process and the coolingadsorbing process. Solar adsorption refrigeration devices are of significance to meet the needs for cooling requirements such as airconditioning, icemaking and medical or food preservation in remote areas. The current technology of adsorption solar powered icemakers allows a daily ice production of between 4 and 7 kg.
Heat sources possessing a temperature of as low as 60 c can drive an adsorption chiller and that temperature requirement is even lower in the case of multistage adsorption cooling systems. This paper presents the simulation of a solar powered continuous adsorption airconditioning system with the working pair of silica gel and water. Modeling and simulation of a solar powered adsorption. The adsorption refrigeration system has several advantages compared to. Review and future trends of solar adsorption refrigeration. Pdf analysis of adsorption time for solar adsorption. A typical flat plate solar collector can provide hot water having a temperature of 65 c in most of the countries in the asian region. The adsorption refrigeration system was composed of the adsorption bed, the evaporator, the condenser, the vacuum pump, and the solar trough collector figure 1. System performance study through computer usage to develop simulation program and simulate behaviors of. A novel solarpowered adsorption refrigeration module. The lowtemperature solarpowered adsorption refrigeration systems are classified into airconditioning systems and icemaking systems. Jul 11, 2016 adsorption chiller compatible with the use of flattype solar collectors as well as with lowgrade waste heat from industrial processes and engines. From the perspective of enhancing the adsorption refrigeration unit tube to absorb solar radiation, thereby strengthening the heat transfer characteristic of. Aug 15, 2010 the solar adsorption refrigeration sar system has economical and environmental aspects that motivate many researches to investigate its capability in cooling system design.
This chapter introduces a comprehensive overview about the principles, challenges and applications of adsorption refrigeration systems arss, as a promising sustainable solution for many of cooling and heating applications. Therefore, it is necessary to increase the systems performance with higher cop. The solar assisted adsorption refrigeration system consists of a parabolic solar concentrator, water tank, adsorbent bed, condenser, expansion device capillary tube, and evaporator as shown in figure 1, and its photograph is shown in figure 2. A solarpowered, adsorption cycle could use ammonia as the refrigerant and stron tium chloride as the solid adsorbent 4. The system is composed of a container of adsorbents, which serves as a solar collector, a condenser and an evaporator which acts as a refrigerator. Solar adsorption refrigeration unit saru oxford academic journals. Adsorption, refrigeration, heat pump, heat management. By use of ozonefriendly refrigerants and ability to utilize the renewable energy sources, the adsorption systems can be preferred as an alternative to the conventional refrigeration systems 6, 7. There is no need to drill and refine it or mine it out of the ground. In france, almost all patent applications were filed up to the early 1980s.
In germany and japan, solar cooling technologies have been steadily filed for patent protection over the last 40 years. Performance analysis of solar adsorption cooling system effect of. Solar thermalpowered adsorption chiller springerlink. Solar adsorption refrigeration represents important criteria of solar energy due to excellent matching between high sunshine and the refrigeration need. The adsorption refrigeration system has several advantages compared to the absorption refrigeration system.
The system proposed consist of a glass tube having sorption bed, condenser and an evaporator. Solar energy despite a large potential market, existing solar refrigeration systems are. The solar adsorption refrigeration system is very useful in rural area without grid. Dynamic simulation of solid adsorption solar refrigerator. Solarpowered adsorption cooling systems sciencedirect.
The specifications of the components used in the system are given in table 1. The experimental system has as main parameters mechanical simplicity, cost effectiveness and reliability rather than high levels of performance. The adsorber is heated to 125c by solar energy collected by a parabolic solar concentrator. A typical solar thermal refrigeration system consists of four basic components a solar collector array, a thermal storage tank, a thermal refrigeration unit and a heat exchange system to transfer energy between components and the refrigerated space. Solar energy refrigeration by liquidsolid adsorption technique. Introduction the interest in adsorption systems started to increase, firstly due to the oil crisis in the 1970s that lead to a concern about the energy shortage, and then later, in the 1990s, because of ecological problems related to the use of cfcs and hcfcs as refrigerants. Developing the world to help mitigate poverty and climate change. Adsorption systems can be activated by a heat source with a temperature as low as 50c 122f, while the heat source temperature for an absorption system should be at least 90c 194f. The refrigerant pair can be taken by zeolite in powder form and water as refrigerant. A small refrigerator operating on the absorption principle with parabolic concentrator collector built. Selection of the solar array depends upon the temperature needed for refrigeration system. Technology development in the solar adsorption refrigeration. Design and construction of a solar energy refrigeration. Solar powered refrigerators may be most commonly used in the future generation.
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