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The Impact of thermostatic expansion valve heating on the performance of air-source heat pumps in heating mode

机译:加热模式下恒温膨胀阀加热对空气源热泵性能的影响

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摘要

This paper discusses the strategy of improving the efficiency of air-source heat pumps by adding a small amount of heat to the sensor of the thermostatic expansion valve (TXV). TXV heating retards the closing of the valve and boosts energy efficiency in heating mode. Test results demonstrate that appropriate TXV heating achieves an improvement in coefficient of performance (COP) and thermal comfort. The required heating power is no more than 40 W and the additional equipment cost is less than $20 at manufacturer cost (2006). Thus, the strategy of TXV heating is both technologically practical and low cost.
机译:本文讨论了通过向恒温膨胀阀(TXV)的传感器中添加少量热量来提高空气源热泵效率的策略。 TXV加热可延迟阀门的关闭并提高加热模式下的能源效率。测试结果表明,适当的TXV加热可提高性能系数(COP)和热舒适性。所需的加热功率不超过40 W,按制造商的成本(2006年)计算,额外的设备成本不到20美元。因此,TXV加热的策略在技术上既实用又低成本。

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