| 热泵空调机组水循环流动特性的试验研究 |
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| 引用本文： | 童明伟,胡鹏,孙亚辉,王茜,于佳佳.热泵空调机组水循环流动特性的试验研究[J].排灌机械,2012(1):64-68. |
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| 作者姓名： | 童明伟 胡鹏 孙亚辉 王茜 于佳佳 |
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| 作者单位： | 重庆大学低品位能源利用技术及系统教育部重点实验室,重庆400030 |
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| 基金项目： | 基金项目：重庆市科委重点攻关项目（2009AB3084）;重庆大学211工程“三期建设”项目（S-09101） |
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| 摘 要： | 针对现有热泵机组空调系统能耗高,舒适度低的问题,提出了由多孔介质柠檬酸钾-石膏配制而成的毛细吸液芯辐射冷却顶板,在用水作冷却介质时毛细吸液芯辐射冷却顶板就成了一块内含多孔介质的均布流道.对毛细吸液芯辐射冷却顶板和传统的蛇形辐射换热盘管内部阻力进行了试验研究,在流量为4～40 L/h变化时,比较分析了毛细吸液芯辐射冷却顶板和传统的蛇形辐射换热盘管的阻力,并利用ICP-Optional Emission Spectrometer对循环水在毛细吸液芯辐射冷却顶板内部运行1 200 h的钙离子质量浓度进行了测试.试验结果表明：当流量小于17 L/h时,毛细吸液芯多孔介质的渗透率较低,导致流体在辐射板中流动时阻力损失较大;当流量大于17 L/h时,流体在辐射板中流动时的摩擦因子较小,在辐射板中由惯性力引起扰动造成的阻力损失小于蛇形管中的扰动损失,多孔介质对水的渗透率较大,导致流体在辐射板中流动时阻力小于蛇形管中流动阻力;钙离子质量浓度在运行360 h之后趋于稳定,能够满足循环水在热泵机组中的长期使用.
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| 关 键 词： | 热泵机组 毛细吸液芯辐射冷却顶板 流动特性 阻力 循环水 |
Experimental study on flow characteristics of water cycle in air-conditioning heat pump unit |
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| Tong Mingwei,Hu Peng,Sun Yahui,Wang Xi,Yu Jiajia.Experimental study on flow characteristics of water cycle in air-conditioning heat pump unit[J].Drainage and Irrigation Machinery,2012(1):64-68. |
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| Authors: | Tong Mingwei Hu Peng Sun Yahui Wang Xi Yu Jiajia |
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| Institution: | (Key Laboratory of Low-gradc Energy Utilization Technologies and Systems, Ministry of Education, Chongqing University, Chongqing 400030, China) |
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| Abstract: | A new ceiling cooling panel of capillary porosity wick（CCPCPW） which was configured by porous media of potassium citrate-gypsum was put forward to reduce high energy consumption and improve comfort of the air conditioning heat pump unit.In this case,when water is cooling the medium,CCPCPW behaves like a uniform channel.In the paper,the flow resistance in CCPCPW and the serpentine radiant heat transfer pipes（SRHTP） was studied by experiment.A comparison of resistance between CCPCPW and SRHTP was made when the flow rate of cooling water was ranged in 4-40 L/h;moreover,the Ca2＋ concentration in circulating water were tested by the ICP-Optional Emission Spectrometer in CCPCPW when the unit was run for 1 200 hours.The results showed that the lower permeability of CCPCPW leads to a larger resistance compared to SRHTP when the flow rate is less than 17 L/h.However,when the flow rate is larger than 17 L/h,the larger permeability of CCPCPW results in a lower flow resistance compared to SRHTP.This suggests the inertial force by the disturbance of CCPCPW is smaller than SRHTP,and the friction factor of CCPCPW is smaller.After running for 360 hours,the Ca2＋ concentration has been stable to make sure the recirculation water can be used for a long period of time in the air conditioning system. |
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| Keywords: | heat pump unit ceiling cooling panel of capillary porosity wick flow characteristics resistance circulating water |
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