太阳能空调（Solar air conditioning）.docVIP

太阳能空调（Solar air conditioning） The principle of solar air conditioning The so-called solar refrigeration is the use of solar collectors for absorption chiller to provide the heat medium water needed by its generator. The higher the temperature of the heat medium water, the higher the coefficient of performance of the refrigerator (also known as COP), the higher the cooling efficiency of the air conditioning system. For example, if the heat medium water temperature is about 60 DEG C, the refrigerator COP is about 0~40; if the heat medium water temperature is about 90 DEG C, the refrigerator COP is about 0~70; if the heat medium water temperature is about 120 DEG C, then the refrigerator COP can reach more than 110. Practice has proved that the solar energy air conditioning technology combined with heat pipe vacuum tube collector and lithium bromide absorption chiller is successful, and it opens up a new application field for solar energy heat utilization technology. I. Basic working principle Solar absorption air conditioning system mainly consists of two parts: solar collector and absorption chiller. 1 absorption refrigeration working principle Absorption refrigeration is the use of two substances composed of two yuan solution as working fluid. These two substances have different boiling points at the same pressure, in which the high boiling component is called the absorber, and the low boiling component is called the refrigerant. There are two commonly used combinations of absorbents refrigerants: lithium bromide water, which is usually suitable for large central air conditioners and the other is water ammonia, which is usually suitable for small air conditioners. The absorption chiller is mainly composed of a generator, a condenser, an evaporator and an absorber. This paper takes lithium bromide absorption chiller as an example. In the refrigeration process, when the lithium bromide aqueous solution by hot water heating in the generator, a water solution of continu