Research And Development Of The Operation Mode In Multi-energy Coupling System

Heat pump technology that is use of low temperature heat energy is an efficient andenvironmental energy utilization technology, Through the consume a small amount of highgrade energy, it realizes that the low temperature heat source transfers to high temperatureheat source that can be used. Thereby, effectively enhance the use of low temperature heatsource, to achieve energy saving purposes. As a pathway of energy-saving andenvironmental protection, one of the important research problems is to make the solarenergy and ground source heat pump technology united use and make the system appliedto buildings energy saving area. To research the solar and ground source heat pumpcombined technology in the application of new energy has an important significance.According to the characteristics of Shanghai area, a solar-ground source heat pumpcoupling system is put forward in this paper. Presenting its working principle, operationmode and process, and analyzing its function. And we have developed an intelligentcontrol system.1. Solar-ground source heat pump coupling system is divided into five subsystems:solar collector systems, solar heat pump system, ground source heat pump system, outdoorpipe heat exchanger systems and low-temperature radiant floor heating systems, and eachsystem detailed in this article.2. Solar-ground source heat pump coupling system is also designed with sevenoperation modes: The solar collector system heating mode, solar energy-ground sourceheat pump combined heating mode, the solar energy heat pump heating mode, groundsource heat pump heating, the solar energy and ground source heat pump alternate heatingmode, Summer refrigeration and excessive season heat storage. It can be for heating andcooling, and supplying hot water continuously throughout the year, realizing the multi-energy used synthetically and efficiently. 3. With the programmable control technology, inverter technology and sensortechnology applied to the control system. We have developed the intelligent control systembased on the PLC, Which can realize the seven operation modes automatically switch.The multi-energy coupling system use solar and geothermal energy as the heatingsource, a form of solar energy and geothermal energy comprehensive utilization, andbelongs to the ways of taking advantage of a variety of low-grade heat source. Theintelligent control system，based on the temperature and seasonal changes, can realize theseven operation modes automatically switch, Which has improved the utilization efficiencyof the composite energy system. At present, the system is in commissioning stage, and theinitial commissioning run stable and good.