Abstract
The load properties of underground engineering have an important influence on operating characteristics of ground source heat pump system. It has important reference value for design and operation management that Simulation analyzing operating conditions of ground source heat pump system under dynamic load conditions. It took an underground engineering as an example for dynamic load calculation in the paper, and simulated operating characteristics of ground source heat pump system under three operating conditions. The calculation results show that the engineering maintenance and management period is conducive to the recovery of soil temperature, and it improves the COP value of the unit. Some measures should be taken to restore soil temperature for long-term continuous operation of underground engineering. The use of heat recovery to make domestic hot water can relieve the problem of soil thermal imbalance to some extent. It is beneficial to improve heat pump unit performance.
Highlights
A large amount of waste heat is generated when equipment operation in underground engineering
The internal temperature of the engineering will rise, and it will lead to deterioration of the working environment, equipment operation failure, even system paralysis if not properly handled
Compared with the surface building, the underground engineering is affected by the surrounding geothermal heat, the internal temperature change is small
Summary
A large amount of waste heat is generated when equipment operation in underground engineering. The use of ground heat exchanger can release the residual heat into the soil, and overcome the problems of central air-conditioning system can’t partition temperature control and energy consumption, it is very flexible and convenient. The cost is higher, so it is important to establish accurate heat exchange model for the economic and sustainable operation of the ground source heat pump system [1,2]. The load characteristic has important influence to the operating characteristics of the ground source heat pump system [3,4,5]. It is of great practical significance to analyze the operation of the ground source heat pump system under dynamic load conditions [6,7]
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