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利用冷凝侧回收热调控供液温度特性分析

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针对某型液冷源供液温度波动较大以及冷凝侧热无利用排放问题,通过对系统工作原理和冷凝侧换热器结构等方面进行分析,提出可以利用冷凝侧回收热控制供液温度波动或实现供液温度的精确控制.建立了冷凝侧换热器的计算模型,并计算出系统冷凝侧空气进、出口温度、冷凝温度和冷却液出口温度等工作参数,以及在不同工况下的热回收量.结果表明,通过冷凝侧热回收的方式对液冷源供液温度进行调控,能够抑制供液温度波动,避免压缩机频繁启停,提高液冷源工作稳定性;冷凝侧热回收时,最大冷却液旁通流量为总流量的50%左右最为合适,并总结了系统制冷量与总热负荷能够实现平衡的工况区域.研究结论结果可为相关领域冷凝侧热利用提供参考.
Analysis of the temperature characteristic of the liquid supply regulated by heat recovery from condensate side
In response to the fluctuation of the supply temperature of a certain type of liquid cooling source and the problem of unutilized discharge of condensation heat,the working principle of the system and the structure of the integrated heat exchanger on the condensation side were analyzed.It was proposed that the recovery heat on the condensation side can be used to control the fluctuation of the supply temperature or achieve precise control of the supply temperature.A calculation model and method for the condensation side heat exchanger were established to calculate the main working parameters on the condensation side such as the air inlet and outlet temperatures,the condensation temperature and coolant outlet temperature,as well as the heat recovery amount under different operating conditions.The results show that using condensation side heat recovery to control the liquid supply temperature of the liquid cooling source can avoid dramatic fluctuations in compressor start/stop and liquid supply temperature,and improve working stability of the liquid cooling source;It is the most suitable that the maximum coolant bypass flow rate of the liquid cooling source is about 50%of the total flow rate.The operating conditions for balancing the cooling capacity and total heat load are summarized.The research conclusion can provide reference for the utilization of condensation heat in related fields.

liquid cooling sourceintegrated heat exchangerheat recoveryliquid supply temperature

钟根仔、王忠恒、侯春枝、朱长青、刘浩、杨敏玲、吕祺

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合肥通用机械研院有限公司,合肥 230031

高端压缩机及系统技术全国重点实验室,合肥 230031

开利空调销售服务(上海)有限公司,上海 200011

液冷源 集成换热器 回收热 供液温度

合肥通用机械研究院青年科技基金

2023010772

2024

流体机械
中国机械工程学会

流体机械

CSTPCD北大核心
影响因子:1.418
ISSN:1005-0329
年,卷(期):2024.52(3)
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