Ground-source heat pump system for supplying heat/cold under under the assistance of valley electricity and method thereof

Abstract

The invention discloses a ground-source heat pump system for supplying heat / cold under under the assistance of valley electricity and a method thereof. The system comprises a ground heat exchanger, a ground-source heat pump unit and an electric heating device; the ground heat exchanger and a primary side of a heat exchanger III form a circulation loop I; a secondary side of the heat exchanger III and the user side form a circulation loop II; through the ground-source heat pump unit, the ground heat exchanger directly forms a circulation loop III together with the user side; the ground heat exchanger and a primary side of a heat exchanger I form a circulation loop IV through the ground-source heat pump unit; a secondary side of a heat exchanger I and the user side form a circulation loop V; the electric heating device and a primary side of a heat exchanger II form a circulation loop VI; a secondary side of the heat exchanger II and the user side form a circulation loop VII. The shallow geothermal energy is combined with technologies and measures for power demand side management, a ground-source heat pump is used as the main cold / heat source, an electric boiler used during the valley period of the power and the floor radiation form is adopted at the tail end to supply cold / heat for buildings.

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) using valley electricity auxiliary heating / cooling, which is mainly used for the research and design method of a single heating (considering cooling) system with dominant heat load , Belongs to the field of building environment and energy application engineering technology. Background technique [0002] In recent years, due to energy saving, CO 2 Concerned about environmental issues such as reducing emissions and improving atmospheric smog, ground source heat pump technology using renewable shallow geothermal energy has been rapidly developed in the field of building air conditioning. Among them, the buried pipe ground source heat pump technology uses the characteristics of huge geothermal capacity and relatively stable underground soil temperature. The closed-loop buried pipe heat exchanger releases heat to the soil in summer a...

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Problems solved by technology

However, for engineering projects with dominant heat load or only heating in winter, although there have been ground source heat pump composite systems with solar energy, industrial waste heat, and gas boilers as auxiliary heat sources, these composite systems have not been developed due to various technical and economic conditions. Able to scale up applications

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