Systems with high cops need higher operating temperatures. Wo20085990a2 method and system for cooling by using. Types of evaporative coolers direct evaporative coolers use a fan to pull outside air through media pads that are kept. Approximately 30% is reflected back to space while the rest is absorbed by clouds, oceans and land masses. Module 8 solar heating and cooling this module is related to the simulation of solar driven heating and cooling systems. To maintain the temperature of the pv cell, incorporation of a cooling system is required. In winter, solar heated air used directly to warm the house. The increase in the set temperature from 45 c to 55 c increased the temperature of the module with a cooling. If solar cooling can be combined with solar heating, the solar system can be more fully utilized and the economic benefits should increase. Heat is removed by the water flowing in the hydronic circuit once the heat from different sources in the space is absorbed by the actively cooled surface ceiling. Experimental investigation of evaporative cooling for enhancing. Pdf design and analysis of cooling methods for solar panels. The type of photovoltaic modules have to be taken into consideration in all. Alami alami, 2014 studied the effects of evaporative cooling on efficiency of pv modules.
Solar airconditioning might be a way to reduce the demand for electricity. Feb, 2017 this video looks at solutions for cooling a solar panel if and when it gets too hot. These stand alone solar inverters are called such because they do. The state of the art australian made pinnacle solar panel is installed on the top of the evaporative cooling unit and can be installed in all four directions to maximise the solar benefit. Solar heating and cooling technologies collect the thermal energy from the sun and use this heat to provide hot water, space heating, cooling and pool heating for residential, commercial and industrial applications. May 06, 2014 solar cooling current status in europe source. Enhancing the performance of photovoltaic module using clay pot. Effects of evaporative cooling on efficiency of photovoltaic modules. May 05, 2014 a low cost, solarpowered swamp cooler. A usp 150 mono, crystalline solar pv module 1600 mm x 800 mm rated 150wp, 42 v peak voltage was adopted to be combined with a water cooling system. Introduction the cooling unit consists of a solar panel mounted on a location to fetch maximum sunlight and it is connected by a battery and an inverter unit through a network of electrical wires, which in turn is connected with the evaporative cooler. Air can be passed over common, solid desiccants like silica gel or zeolite or liquid desiccants like lithium bromidechloride to draw moisture from the air to allow an efficient mechanical or evaporative cooling cycle. This resulted in increasing the electric power of pv module by 15% and that the thermal efficiency of the photovoltaic module was 68. This work concerns an innovative solar assisted desiccant and evaporative cooling dec system for building air conditioning.
System types this module describes the most common types of solar water heating systems. This study deals with pv panels cooling using evaporative cooling of water. The efficiency of some types of pv cells is very much dependent on. Pdf this paper presents the results of an experimental study on the effect of cooling of solar photovoltaic pv panels by. Cooling of a photovoltaic module with temperature controlled. Adsorption cooling is based on the evaporation and condensation of a refrigerant. One of the most interesting charts is the psychrometric chart with overlays that show the design strategies e. Pdf experimental investigation of evaporative cooling for. This does not actually cool the air but reduces the humidity, making it seem cooler. This is achieved by blowing warm, dry air through a permeable pad that is soaked with water. Introduction to solar cooling systems ced engineering. Solar cooling produces much lower co 2 emissions than compression cooling due to its use of the sun as a co 2free renewable energy sources.
The efficiency of photovoltaic panels decreases as the panels. Figures based on cooling an area of 100 sqm, with 6 areas to be cooled. Solar thermal energy is collected and used by a thermally driven cooling process, which in turn is normally used to generate chilled water or conditioned air for use in the building. The cooling system adheres to the back of the commercial pv module.
Solar thermal technologies can be used anywhere in the united states. Different types of cooling systems used in photovoltaic module solar system. However, the research on using evaporative cooling for pv panels is very few. Evaporative cooling differs from typical air conditioning systems, which use vaporcompression or absorption refrigeration cycles.
Al 2 o 3 water and cuowater have module efficiency of 10. Most commercially available absorption chillers range in capacity from medium 40 to 100 kw to high 300 kw and above. Solar energy, radiant light and heat from the sun, is harnessed using a range of technologies such as solar heating, solar photovoltaics. An evaporative cooler also swamp cooler, swamp box, desert cooler and wet air cooler is a device that cools air through the evaporation of water. Solar energy, led lighting, evaporative cooling, energy. The increase in the set temperature increased the average thermal efficiency of the whole system.
Increase in electrical efficiency depends on cooling techniques, type and size of the module, geographical. Analysis of advanced solar hybrid desiccant cooling. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. Therefore, cooling pv panels using a suitable cooling method helps. Passive cooling technology for photovoltaic panels for domestic.
Advanced solar assisted desiccant and evaporative cooling. Solar output based on figures from the clean energy council. Indirect cooling utilizes heat exchangers to pre cool the air while direct cooling lets the air pass the humidifier directly into the cooling chamber. One is the energy recovery ventilator that preheats and precools outside air in the airtight house design. Request pdf effects of evaporative cooling on efficiency of photovoltaic.
As the solar radiation increased, the module was cooled by inlet and outlet water. Effects of evaporative cooling on efficiency of photovoltaic. Review of passive heatingcooling systems of buildings. Research carried out under the aegis of the international energy agencys solar heating and cooling program has shown that there is a range of seemingly subtle design decisions that can impact significantly on the performance of solar cooling. Desiccant coolers are the other very popular style of solar cooling. Solar cooling used for solar air conditioning a clean. To eliminate this problem, pv module is incorporated with thermal collector to. These are often used in combination with other types of solar coolers such as vapor compression or evaporative, which really do lower temperature.
How to convert a swamp cooler to solar powered hunker. Comparison of solar panel cooling system by using dc. A typical solar cooling system also provides space heating and hot water, besides cooling. In this system, airtoair packaged wet heat exchangers are used to maximize the exploitation of the evaporative cooling potential associated with the exhaust air stream. Solar cooling is a technology for converting heat collected from the sun into useful cooling into refrigeration and airconditioning applications. M mohamed musthafa et al discuss about the cooling of solar panel back side using water. Radiant cooling systems typically use chilled water running in pipes in thermal contact with the surface. A theoretical model based on the heat and mass transfer occurring in the vicinity of the bottom side of a solar pv panel. Solar cooling systems by themselves, however, are usually not economical at present fuel costs. Solar panel evaporative coolers bonaire pinnacle solar. Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. These technologies displace the need to use electricity or natural gas. A manual ball valve at the water outlet was used to control the flow. In these way our solar powered indirect evaporative cooling can be used all year air conditioning system.
Pakistans leading alternate energy provider, cooling specialist and energy efficiency products and services. Combination of evaporative cooling and wind tower for passive cooling. Starting from the behavior of single components like water and airbased solar collectors, heat exchangers, storage tanks, sorption wheels, evaporative humidi ers and closed absorption cooling machines, more and more complex. This cool dry air is then fed into the home in order to cool down the rooms. Bipvt system for thermal heating and electricity production. Solar heating and cooling technologies renewable heating. For solar assisted systems, it is important to select the appropriate solar collector type to meet the temperature needs of the cooling machine.
The circulating water only needs to be 24c below the desired indoor air temperature. Part of this research program investigated combinations of dehumidification and evaporative cooling in solar driven hybrid desiccant cooling systems. Alternatives to using solar energy are to use waste heat from different industrial proc. With the additional evaporation heat transfer, it was claimed that they.
Other cooling techniques include conductive cooling, phasechange material cooling, etc. Although the coefficient of performance cop, which is defined as the ratio of the cooling output to the driving heat required, is lower in the case of solar cooling, the overall co 2. However, some regions naturally receive more intense and more reliable solar energy than others, depending on latitude, typical weather patterns, and other factors. Many households use conventional cooling systems as a backup to their evaporative cooling systems during these periods. Analysis of advanced solar hybrid desiccant cooling systems. In addition many solar airconditioning systems are constructed in ways that eliminate the need for cfc, hcfc or hfc refrigerants. There are a variety of ways in which pv panel can be cooled. Solar cooling is suitable for residential, commercial, institutional and industrial use. Factors that influence the selection of a specific system type include the amount of water that needs to be heated, relative cost and efficiency, simplicity of operation, and climate conditions in which the system will be used. The earth receives 174 petawatts pw of incoming solar radiation. Absorbs up to 87% of your roofs solar load reduces upfront and everyday costs lowers bills for kwh used lowers demand charges as your peak drops reduces wear on existing ac when present extends roof life, by keeping it cool all day protects roofs against solar shock of sudden summer storms. Solar energy, evaporative cooler, copper tube, wet bulb temperature 1. Cooling of solar pv panels using evaporative cooling.
Three type k thermocouples tme brand were used to measure the. A swamp cooler is a simple device that produces cool air by evaporative cooling. Solar cooling systems can be a costeffective and environmentally attractive airconditioning solution. Different types of cooling systems used in photovoltaic module solar. As the water evaporates it cools the pad and the air that passes through it. Evaporative cooling strategies are well suited to those areas of the southwest with the most severe cooling requirements. Solar cooling systems are attractive because cooling is most needed when solar energy is most available. Technical and economic effects of cooling of monocrystalline. The waterbased cooling system was found to increase the solar cells performance higher than the air based cooling system tang et al.
185 520 1088 604 926 415 1313 568 888 939 149 348 565 366 1602 1105 1569 628 1511 813 1258 709 448 566 163 836 1084 102 254 210 1260 1145 17 229 344 46 1075 997