Field test study of a novel defrosting control method for air-source heat pumps by applying tube encircled photoelectric sensors
Field test study of a novel defrosting control method for air-source heat pumps by applying tube encircled photoelectric sensors
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DOI：
10.1016/j.ijrefrig.2015.07.004
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发表时间：
2016-06-01
期刊：
影响因子：
--
通讯作者：
Liu, Jingdong
中科院分区：
文献类型：
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作者：
Ge, Yijing;Sun, Yuying;Liu, Jingdong
为了提高空气源热泵（ASHP）的除霜精度，提出了一种应用环管光电传感器（TEPS）的新型除霜控制方法。在中国北京两个采暖季进行了现场试验，验证了新型TEPS方法的可行性和实用性。测试结果表明，无论环境条件如何，TEPS方法都可以在类似情况下启动除霜：大部分换热器表面已被霜覆盖；压缩机吸气温度降低约9℃；压缩机排气温度升高约16℃；制热能力下降约30%。此外，验证了TEPS方法在结霜和非结霜条件下比传统T-T方法做出更准确、更合理的除霜决策。结果表明，TEPS 方法是一种可用于 ASHP 的竞争性除霜控制方法。 (C) 2015 Elsevier Ltd 和 IIR。版权所有。
To improve the defrosting accuracy of air source heat pumps (ASHPs), this paper proposes a novel defrosting control method by applying tube encircled photoelectric sensors (TEPSs). A field test was conducted for two heating seasons in Beijing, China, to verify the feasibility and practicality of the novel TEPS method. The test results revealed that irrespective of the environmental conditions, the TEPS method can initiate defrosting in similar situations: most of the heat exchanger surface had been covered by frost; the compressor suction temperature decreased by similar to 9 degrees C; the compressor discharge temperature increased by similar to 16 degrees C; and the heating capacity decreased by similar to 30%. Furthermore, the TEPS method was verified to make more accurate and more reasonable defrosting decisions than the traditional T-T method under both frosting and non-frosting conditions. The results indicate that the TEPS method is a competitive defrosting control method that can be used for ASHPs. (C) 2015 Elsevier Ltd and IIR. All rights reserved.