Experimental Study Of Semiconductor Refrigeration Air Water Abstraction Device By Using Solar Energy In Desert A R E A

As we all know, it is very lack of water in China’s western region, so desert plants are difficult to survive, and lack of water is also influence local people’s daily life. Although daytime temperatures are high desert, low humidity, humidity desert night, that is, the night desert air contains a lot of water vapor. How to get water in desert areas has been a matter of growing concern. The purpose of this paper is the use of semiconductor cooling condensation method to obtain water from the humidity in the air. Semiconductor refrigeration will appear by the end of the DC refrigeration, heating one end, high moisture content of the air through the cooling chip cold junction surface, moisture in the air condenses out. Northwest long sunshine hours of sunshine, plenty of solar energy available, we use solar photovoltaic system to provide electricity for semiconductor cooling, desert areas proposed solar-driven semiconductor refrigeration obtain moisture from the air.This paper studies the principles of semiconductor refrigeration, semiconductor refrigeration conditions proposed semiconductor refrigeration optimal conditions-can guarantee a smaller energy consumption, but also ensures a high coefficient of performance. The relationship between operating current and cooling efficiency, cooling capacity of semiconductors, experimental verification through the work of current optimal working conditions. Solar photovoltaic system is composed of solar panels, controllers, inverters, batteries, whose core component is a solar panel, in the case of determining the location, we study the angle of solar cells placed on the solar photovoltaic system output power, output voltage, output current impact.Through a series of theoretical and experimental results, we learned that the optimal conditions semiconductor cooling is there, in the case of the semiconductor type is determined, along with the increase in current refrigeration tablets powered refrigeration temperature of the hot end of the growing film rather cold junction temperature getting lower and lower. However, the electric current exceeds a certain limit, the cooling chip cold junction temperature will gradually rise. Temperature refrigeration pieces at both ends of the final steady cold very quickly, to ensure that the temperature of the hot and cold ends of sustained no significant volatility.The output voltage of the solar photovoltaic power generation system, open circuit voltage change is consistent with the trend of solar panels placed angle, regardless of placement angle of how changes in the total open circuit voltage is greater than the output voltage, and solar photovoltaic system output current, short-circuit current with battery board placed the same angle changes, the display angle increases, the short-circuit current total is greater than the output current. In the display angle within the range of30°~60°angle output power significantly larger than the other, which put solar panels angle of45°, the maximum output power.The test process, we make the size of the semiconductor refrigeration boxes, cooling box material is glass, the outer surface of the cooling box laying insulation materials, energy consumption for refrigeration box system240W. In the case of the electric current of3.5A, model refrigeration TEC1-12706chip to achieve optimal cooling conditions. Selection of rated power100W solar panels, solar panels in the display angle of45°, the cooling tank at night average relative humidity of65%environment, from20:00-8:00the next day, you can get1572g of condensate.Semiconductor refrigeration methods and solar water adsorption methods were compared, the paper describes a solar adsorption water facilities, water principle, water efficiency, water two water obtained by comparing the life of a solar thermoelectric cooling air intake device can achieve20years, the initial investment7,275yuan,14,875yuan of total investment, with an average investment of743.75yuan a day.Solar Semiconductor cooling device can get a stable water condensate, the total return on investment lucrative, long life, system stability, environmental pollution, can provide a stable water source for desert landscaping, should be to promote the use of experimental in desert regions.