基于多元热回收的数据中心空调系统性能研究
Performance analysis of multi-source heat recovery air conditioningsystems for data centers
摘要：
为充分利用数据中心余热、实现全年热回收,本文提出了一种面向液冷数据中心的多元热回收空调系统,该系统集成太阳能集热器、吸附式制冷机、地埋管换热器等设备实现全年热回收。其中吸附式制冷机利用太阳能集热器与数据中心冷却液中的热量为数据中心供冷,地埋管换热器用于将夏季热量储存至地下用于冬季供暖,从而实现余热多重利用。以天津市某数据中心为实例进行研究,结果表明,该多元热回收系统节能率可达11.2%,全年余热利用率可达56%,投资回收期最短可控制在4 a以内,具有良好的能效和经济性。本研究可为数据中心余热利用提供一种新的思路。
Abstract：
To fully utilize data center waste heat and achieve annual heat recovery, this paper proposes a multi-source heat recovery air conditioning system for liquid-cooled data centers. The system integrates solar collectors, adsorption chillers, and ground heat exchangers to realize annual heat recovery. Specifically, the adsorption chiller utilizes heat from the solar collector and data center coolant to provide cooling, while the ground heat exchanger stores summer heat underground, which is then extracted for winter heating, thus achieving multi-stage waste heat utilization. The results of a case study on a Tianjin data center show this system achieves an energy saving rate of 11.2%, an annual waste heat utilization rate of 56%, and a payback period within 4 years, demonstrating excellent energy efficiency and economic benefits. This research offers a novel approach for waste heat recovery in data centers.
Keywords:data center; air conditioning; liquid-cooled; cross-seasonal energy storage; multi-source heat recovery; adsorption chiller; solar collector; ground heat exchanger