This paper investigates a novel micro-channel flat separated loop heat pipe system for cooling the information technology equipment in the data centres through theoretical and experimental analysis and by assessing the impact of the inlet water temperature on system performance. A computer model is developed to simulate the steady-state performance of the micro-channel flat separated loop heat pipe system. After comparing the experimental and modelling results, the new and conventional system under the same working conditions, the model is validated yielding high accuracy in predicting the performance of the micro-channel flat separated loop heat pipe system with recorded error being limited to 2.16–8.97%. The new system has better performance than the conventional system. Under the operating conditions of heat load intensity of 1,000 W/m², water flow rate of 0.28 m³/h, refrigerant filling rate of 30%, ambient air temperature of 26°C, and evaporator and condenser height difference of 0.8 m, the performance of the system has been explored at inlet temperature from 15 to 24°C with increments of 3°C. The system’s averaged heat transfer efficiency was found to decrease with the increase in inlet temperature. This research provides valuable insight into the data centre information technology equipment cooling, which is of great significance for energy saving and environmentally friendly operation of data centres.

中文翻译：

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用于数据中心冷却的微通道扁平分离回路热管系统的性能研究

本文通过理论和实验分析，以及通过评估进水温度对系统性能的影响，研究了一种新颖的微通道扁平分离式环路热管系统，该系统用于冷却数据中心的信息技术设备。开发了一个计算机模型来模拟微通道平分离回路热管系统的稳态性能。在比较了实验和建模结果之后，在相同的工作条件下，新的和常规的系统进行了验证，该模型在预测微通道扁平分离回路热管系统的性能方面具有很高的准确性，记录的误差限于2.16–8.97 ％。新系统具有比常规系统更好的性能。在热负荷强度为1,000 W / m的工作条件下²，水流量为0.28 m ³ / h，制冷剂填充率为30％，环境空气温度为26°C，蒸发器和冷凝器高度差为0.8 m，系统性能在15°C的入口温度下进行了研究至24°C，以3°C为增量。发现系统的平均传热效率随着入口温度的升高而降低。这项研究为数据中心信息技术设备的冷却提供了宝贵的见识，这对于数据中心的节能和环保操作具有重要意义。