Coupling saltwater layer forced convection well type soil source heat pump system and its operation method

Abstract

The invention provides a coupled saline water layer forced convection well type ground-source heat pump system and an operation method. The heat pump system forms a heat pump unit user side heat supply and cool supply circulation loop, a heat pump unit ground-source side heat supply and cool supply circulation loop, and a saline water layer pumping and injection well forced convection circulation loop, and various operation modes are achieved through the operation method. The coupled saline water layer forced convection well type ground-source heat pump system and the operation method have the effects that the heat exchange intensity of a buried pipe is increased, the phenomena of heat short-circuiting and heat disturbance of a buried pipe heat exchanger are avoided, and the problem of soil heat imbalance caused by seasonal disproportion of building loads in the low laying land around the Bohai Sea is solved. A heat exchanger is additionally arranged in a saline water circulation system and conducts heat exchange with circulation solutions in the buried pipe, and the building load peak is effectively adjusted while the underground heat exchange of the buried pipe is enhanced. The application fields of the ground-source heat pump system as shallow geothermal energy in improvement and modification of environment-friendly buildings are developed, and then energy supply and carbon dioxide emission of the buildings are reduced.

Description

Technical field [0001] The invention relates to a forced convection well type soil source heat pump system and an operating method for coupling saline aquifers, belonging to the field of shallow geothermal energy development and utilization and the field of heating, ventilation and air conditioning. This technology can effectively alleviate the "thermal short circuit" and "thermal interference" phenomena of the buried pipe heat exchanger of the ground source heat pump, and solve the problem of soil thermal imbalance. It is especially suitable for the low plain area around the Bohai Sea with abundant reserves of shallow saline water resources and imbalance between the seasonal building cold and heat loads. Background technique [0002] The ground source heat pump utilizes the relatively stable characteristics of the underground soil temperature throughout the year, and exchanges heat with the interior of the building through the heat exchange pipelines and heat pump systems buried...

AI Technical Summary

Problems solved by technology

After searching the published Chinese patent documents, there is no relevant patent document in this direction

Images