The performance of double coupling solar heat pipe collector in the overall solar heat pump system can be shown on the basis of the data concerning the heating coefficient. At the same time, theoretical and experimental research has been developed on solar heat pipe collector with enhanced injection according to Double tank water heater tips. The results about solar heat pipe collector studies have shown that the ratio of refrigerant injection should not be higher than five percent and injection circuit is very helpful effect on the solar heat pipe collector system. The same is also true when the temperature is ranged from fifteen degrees to twenty degrees.
A new type of solar heat pipe collector in the solar water heater system has been introduced to some developed nations along with the scroll compressor. This is largely achieved through medial injection of the economizer in the course of compression and has been put forward by many solar heat pipe collector scholars. The sketch of solar heat pipe collector system at low temperature has been shown so that the following characteristics can be compared to conventional heat pump according to Double tank water heater tips.
This is especially true when the environmental temperature of solar heat pipe collector is higher than five degrees since the operation of system is the same as the conventional water heater. But when the environmental temperature is less than or equal to a certain degree, the solar heat pipe collector valve will be open and the liquid from the condenser can be divided into primary and auxiliary pipelines in less than three minutes. The primary pipe line in the solar heat pipe collector in general enters directly the economizer so that the liquid refrigerant of auxiliary pipeline can be throttled by thermostatic expansion valves. It can also be changed into the mixture of solar heat pipe collector when the liquid enters the economizer. After heat of both solar heat pipe collector refrigerants from primary and auxiliary pipelines, hot water can be transferred into the solar water heater tank.
The solar heater pipe collector refrigerant from the primary pipeline is changed into cooled liquid and then the pressure can be reduced when it enters the evaporator. The low temperature and pressure wet vapor in solar heat pipe collector have the advantage of absorbing thermal energy in a rapid manner. This is because the evaporator in solar heat pipe collector can be boiled in the suction of the compressor. The refrigerant from the auxiliary pipeline in solar heat pipe collector can be changed or even discharged from the condenser as long as it completes the cycle according to Double tank water heater tips.