| 非共沸混合工质R22/R141b高温热泵实验研究 |
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| 引用本文： | 李廷勋,郭开华,王如竹,樊栓狮.非共沸混合工质R22/R141b高温热泵实验研究[J].化工学报,2002,53(5):542-545. |
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| 作者姓名： | 李廷勋 郭开华 王如竹 樊栓狮 |
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| 作者单位： | 广东工业大学; 中国科学院广州能源研究所; 上海交通大学制冷与低温工程研究所 |
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| 基金项目： | 国家重点基础研究规划项目资助 (No .G2 0 0 0 0 2 63 ) |
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| 摘 要： | 引 言大量低品位能源如太阳能、中低温地热能等常被忽略 ,有些低品位能源直接排放不仅造成极大的浪费 ,而且会给环境带来有害热污染 ,比如工业余热 (化工厂 ,发电厂 )、机车尾气等 .目前 5 0～ 80℃范围的热能可以直接用作制冷机 (吸附 ,吸收制冷 )的驱动源或用来进行加热、干燥等 ,而 30～ 5 0℃范围的热能尚无成熟高效的利用手段 ,高温热泵是其中较为可行的技术方案之一高温热泵的开发研究一直是热泵应用领域中的一个重要分支 ,如日本的ＡｋｉｏＭｉｙａｒａ 1993年以Ｒ2 2 /Ｒ114为工质进行了实验 (冷凝器入水温度 4 0℃ ,出水温度 6 0…
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| 关 键 词： | 混合工质 热泵 非共沸 |
| 文章编号： | 0438-1157(2002)05-0542-04 |
| 修稿时间： | 2000年10月16 |
HIGH TEMPERATURE HEAT PUMP WITH NON-AZEOTROPIC REFRIGERANT MIXTURES |
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| LI Tingxun,GUO Kaihua,WANG Ruzhu,FAN Shuanshi.HIGH TEMPERATURE HEAT PUMP WITH NON-AZEOTROPIC REFRIGERANT MIXTURES[J].Journal of Chemical Industry and Engineering(China),2002,53(5):542-545. |
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| Authors: | LI Tingxun GUO Kaihua WANG Ruzhu FAN Shuanshi |
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| Abstract: | A water-to-water high temperature heat pump was fested experimentally in this work. The inlet water temperature of evaporator was 40 ℃ and the inlet and outlet water temperature of condenser were 70 ℃and 80 ℃ respectively. Almost no conveafioual refrigerant is proper for this high temperature working condition. R22/R141b was taken as heat pump working fluid firstly in this work and heat pump’s pressure performance is improved. Even though the highest cooling water temperature was about 80 ℃,the highest pressure was less than 2 5 MPa and compression ratio was less than 8, which could satisfy R22 compressor’s limits. The performance of system was characterized by refrigerant compositions, compressor RPM and water temperature change. It was found that the coefficient of performance reached its maxim of 2 5 when R22’s molar component was about 75%. If only the water temperature difference in evaporator Δ T E increased, the heating and refrigerating capacity all decreasd. However, the heating and refrigerating capacity all increased with water temperature difference in condenser Δ T C. Frequency of compressor had little influence on heat pump’s COP and working fluid’s (R22/R141b) composition if the compositions and working condition remained unchanged. |
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| Keywords: | mixtures heat pump non-azeotropic |
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