Buried pipe ground source heat pump system and method using off-peak electricity to assist cold storage/heat storage

Abstract

The invention discloses a buried pipe ground source heat pump system and method using off-peak electricity to assist cold storage / heat storage. The primary side of the evaporator and heat exchanger I forms a heat exchange loop II, and the secondary side of the heat exchanger I forms a loop III with the user end; the evaporator and energy storage water tank of the ground source heat pump unit form a cold storage loop IV; The energy storage water tank and the primary side of the heat exchanger II form a cooling / heat release loop V; the secondary side of the heat exchanger II and the user end form a loop VI; the electric heating device and the energy storage water tank form a heat source side loop VII ; The condenser and the floor heating pipeline of the ground source heat pump unit constitute the user-side loop VIII. The system makes full use of shallow geothermal energy, valley electricity, and electric energy storage technology to realize the most economical air-conditioning operation mode. This technology solves the cold and heat imbalance problem of underground rock and soil in northern residential projects, and can be used as a remedial measure for single-heating ground-source heat pump projects.

Description

technical field [0001] The present invention relates to a buried pipe ground source heat pump system (hereinafter referred to as ground source heat pump) that utilizes off-peak electricity to assist cold storage / heat storage, and is mainly used for the research and development of single heating (cooling) systems with dominant heat loads. The design method belongs to the professional engineering technology field of architectural environment and energy application. Background technique [0002] In recent years due to building energy saving, CO 2 With the attention of environmental issues such as emission reduction and improvement of atmospheric smog, ground source heat pump technology using renewable shallow geothermal energy has developed rapidly in the field of building air conditioning. Among them, the buried pipe ground source heat pump technology utilizes the characteristics of the huge heat capacity of the earth and the relatively stable temperature of the underground r...

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Problems solved by technology

However, for buildings with dominant heat load or only heating in winter, although there are already ground source heat pump composite systems with solar energy, industrial waste heat, and gas boilers as auxiliary heat sources, due to various technical and economic constraints, these composite systems have not been able to Large-scale promotion and application

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