Ground source heat pump air-conditioning system for sectional regulation and control of ground heat exchangers

Abstract

The invention relates to a ground source heat pump air-conditioning system for the sectional regulation and control of ground heat exchangers, which comprises a variable-frequency heat pump set system, a primary pump system, a secondary pump system and a ground heat exchanger system; the invention has remarkable effects in the aspects of regulation and control as well as energy saving of a large ground source heat pump air-conditioning system, the refrigerating/heating capacity is automatically regulated by a variable-frequency heat pump set along with the change of loads, and the starting operation quantity of the ground heat exchangers is adjusted by adjusting the starting number of secondary pumps, the energy-saving potentiality of the ground source heat pump air-conditioning system is fully developed, and the recovery period of soil temperature at partial regions can be prolonged, thereby effectively relieving the continuous increase or decrease of the soil temperature at partial regions, and ensuring the thermal stability of soil. The ground source heat pump air-conditioning system not only has the energy-saving effect, but also is beneficial to the long-term stable operation of the system.

Description

technical field [0001] The present invention relates to a heat pump air-conditioning system in the technical field of refrigeration and heating, in particular to a ground-source heat pump air-conditioning system with sub-regional control of buried tube heat exchangers. Background technique [0002] The energy issue is a major issue facing human development, and the coordinated development of energy and the environment has become a trend. Ground source heat pump is an effective form of energy utilization. It uses the soil as a cold and heat source. Through the buried pipe heat exchanger, it dissipates heat to the soil in summer and absorbs heat from the soil in winter, and then provides cooling and power supply to the building through the heat pump unit. hot. The soil source belongs to renewable energy, and the use of renewable energy as a cold and heat source for building cooling and heating is energy-saving and environmentally friendly. However, the heat dissipation in su...

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Problems solved by technology

However, the circulation loop of the buried tube heat exchanger in this system uses a primary pump system, which cannot realize the partition control of the buried tube heat exchanger, and cannot adjust the operating quantity of the buried tube heat exchanger according to the change of the building load.

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