The Basic Parameters Obtained for Design of Ground Source Heat Pump

In the design of ground source heat pump system, for calculating the problems of the capacity of system and the number of ground heat exchanger, etc. The original soil temperature, soil thermal properties, soil average temperature and other basic parameters as the input conditions of the calculation often need to be made certain. On the other hand, contracted with the measured values, because of the calculated value often based on some assumptions and neglect of conditions, it has to have some bias which has great influence on the practical applications. To solve the above problems, the ground heat exchanger measure apparatus that researched and developed by authors was used for the test of input conditions of calculation and the test of the heat transfer rate of ground heat exchanger. Test results show that the use of test equipment can effectively resolve the input conditions in calculation and the requirement of the comparison of calculated values and measured value, and it is the effective methods for obtaining key parameters of ground-source heat pump system design.