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首页> 外文期刊>Journal of thermal analysis and calorimetry >Experimental investigation of the heating performance of refrigerant injection heat pump with a single-cylinder inverter-driven rotary compressor
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Experimental investigation of the heating performance of refrigerant injection heat pump with a single-cylinder inverter-driven rotary compressor

机译：单缸逆变器驱动旋转压缩机制冷剂注入热泵加热性能的实验研究

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摘要

Applying the refrigerant injection technology to air-source heat pump had been proved to be an effective access to acquire a better performance in the cold regions. In this paper, the test-bed of R410A single-cylinder rotary compressor vapor injection (SCRCVI) system with flash tank was built and measured by changing the compressor frequency f and injection pressure P (inj) under various ambient temperatures. The experimental results indicated that the effect of refrigerant injection became stronger as the ambient temperature decreased. So the SCRCVI showed a superior heating performance at lower ambient temperature, and the conventional single-stage vapor compression (CSVC) system would exhibit higher COPh, while the ambient temperature was beyond the critical value. Compared with the CSVC system, the Q (h) and COPh were improved by 9.1 similar to 29.5 and 5.35 similar to 7.89%, respectively, under the ambient temperature T (od) = - 10 A degrees C. The injection pressure ratio R (p) under different operating conditions was varied in the range between 0.2 and 0.22. Specifically, the trend in variation of R (p) was reliably used to optimize the refrigerant injection system design and the control strategy.
机译：已证明将制冷剂注入技术应用于空气源热泵，以获得在寒冷地区获得更好的性能的有效访问。本文通过在各种环境温度下改变压缩机频率f和注射压力P（RENM），构建并测量了R410A单缸旋转压缩机蒸汽注射（SCRCVI）系统的试验床。实验结果表明，随着环境温度降低，制冷剂注入变得更强。因此，SCRCVI在较低的环境温度下显示出优异的加热性能，并且传统的单级蒸汽压缩（CSVC）系统将表现出更高的COPH，而环境温度超出了临界值。与CSVC系统相比，Q（H）和COPH可分别提高9.1，同样与29.5和5.35相似，分别在环境温度T（OD）= - 10度C.注射压力比R（ p）在不同的操作条件下变化在0.2和0.22之间。具体地，R（P）的变化趋势可靠地用于优化制冷剂注入系统设计和控制策略。

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