流体机械

2019, v.47;No.559(01) 58-63+57

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综合建筑群不同入住率下复合地源热泵运行策略模拟研究
Simulation Study on the Operation Strategy of Hybrid Ground Source Heat Pump under Different Occupancy Rates of Complex Buildings

张丹丹;李维;牛晓峰;汤思益;
Zhang Dandan;Li Wei;Niu Xiaofeng;Tang Siyi;College of Urban Construction,Nanjing Tech University;

摘要(Abstract):

综合建筑群集住宅商业办公为一体,在商业办公满负荷运行的条件下,运用数值模拟研究住宅小区30%、50%、70%、100%4种入住率条件时地埋管换热器运行情况,可以得出不同入住率下复合式地源热泵系统最优运行控制策略。结果表明,入住率为30%时采用过渡季节开启冷却塔散热,冬季采用地埋管取热的方式能达到最优运行效果;入住率为50%和70%时,夏季埋管全部使用,冬季只运行一半的运行方式最佳;入住率为100%时,采取地埋管换热器出口水温比对应时刻的湿球温度高2℃时开启冷却塔的方式,运行效果最佳。本文以土壤温升和优化系统运行效率为依据,对综合建筑复合式地源热泵系统的运行设计有一定的参考价值。
The comprehensive building complex is a building group with residences,businesses and offices integrated together. By numerical simulation under the full-load operating conditions of the businesses and offices,studies were carried out on the operation of buried tube heat exchanger(BHE)with 30%,50%,70% and 100% occupancy rate,respectively,so that the optimal operation control strategy of a hybrid ground-source heat pump(HGSHP)system with different occupancy rates can be obtained. The results show that the measure of turning on the cooling tower for heat dissipation in transitional season and using buried pipe for heating in winter can achieve the optimal operating effect when the occupancy rate is 30%.The operation mode of running all buried pipes in summer and only half in winter is the best when the occupancy rate is 50% and 70%. While at 100% occupancy rate,turning on the cooling tower when the outlet water temperature of the BHE is 2 ℃ higher than the temperature of the wet bulb at the corresponding time is the optimal operating strategy.This paper is based on soil temperature rise and optimization of system operation efficiency,which has certain reference for the design and operation of HGSHP system in building complex.

关键词(KeyWords): 综合建筑群;复合式地源热泵;入住率;数值模拟
complex buildings;hybrid ground-source heat pump;occupancy rate;numerical simulation

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基金项目(Foundation): 国家自然科学基金项目(51406076)

作者(Author): 张丹丹;李维;牛晓峰;汤思益;
Zhang Dandan;Li Wei;Niu Xiaofeng;Tang Siyi;College of Urban Construction,Nanjing Tech University;

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