The Analysis To Applicability Of Ground-coupled Heat Pump In Campus Building

Whether buried-pipe systems and heat pump engine room are designed accurately, determines the economy and stability of ground-coupled heat pump systems. The programs of ground-coupled heat pump systems differ depending on the nature of the building. Ground-coupled heat pump systems which are applied to the campus building’s should be fully considered of load peak shifting, winter and summer vacations. Therefore, this article probes some important issues deeply in design and operation of ground-coupled heat pump systems in campus buildings.The essay creates physical model, and uses DeST dynamic load simulation software to simulate the full year hourly load of a school in Jining, then simulates school buildings dynamically with hourly cooling load, the hourly heat load, maximum or minimum colds and heat load. So it calculates the hourly superimposed load of specific architecture in the typical day, and researches its load characteristics and load characteristics, then analyzes energy consumption.The author generalize DeST simulation data, analyzes the influence of the intermittent load for the heat pump unit selection; and simulates the parameters with geothermal heat exchanger simulating and designing software which research group developed in two conditions of intermittent or continuous operation, at the same time analyzes the influence of intermittent operation to ground-coupled heat pump systems in three aspects such as the borehole wall temperature on the ground, the consumption power of the compressor, and the heat pump unit EER.According to a middle school in Jining, based on the simulation results, the essay optimizes the design about its source engine room and buried-pipe systems of the ground source heat pump, and analysis of the economic and energy-saving effect. The results show that the campus holiday is just in the most unfavorable period of the building load, the load peak shifting is very distinctive, and the superimposed hourly maximum load of academic buildings or dormitories is much larger than the maximum sum of each building, the capacity of heat pump units and other equipment should be selected based on the latter. So such load characteristics are very suitable for intermittent operation of ground-coupled heat pump systems, and no matter from soil temperature, compressor consumption power, and system EER this intermittent operation are very favorable to ground-coupled heat pump systems, and the optimization of designing will maximize the efficiency of the unit. The results of these studies have a guiding role on scientific and rational application of ground source heat pump technology.