Experimental study on the heat recovery characteristic of a plate heat pipe heat exchanger in room ventilation

HVAC&R Research Pub Date : 2014-10-03 DOI:10.1080/10789669.2014.945852

Y. Diao, Ji Zhang, W. Yu, Yaohua Zhao

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引用次数: 8

Abstract

A plate heat pipe heat exchanger for use in a room ventilation system to cool or heat outdoor fresh air was designed in this study. One fresh air duct and one exhaust air duct were joined with the heat pipe heat exchanger to study the thermal performance of the thermal recovery system. A ratio of 1 for air volume flow rate between fresh and exhaust air was used to investigate the heat recovery effectiveness and the change in fresh air temperature. The fresh air temperature in the inlet duct was controlled in the range of 27 to 40°C under summer simulation conditions and in the range of 2 to 15°C under winter simulation conditions, whereas the temperature of exhaust air was controlled at approximately 24 and 18 C to simulate summer and winter conditions, respectively. The experimental results show that the temperature variations of fresh and exhaust air increase with increasing inlet fresh air temperature under summer conditions but decrease with increasing inlet temperature of fresh air under winter conditions. The maximum heat recovery effectiveness of the plate heat pipe heat exchanger was 58% in summer and 62% in winter. The change in effectiveness is moderate with different vacuum levels. At a vacuum of 1 × 10−3 Pa, the maximum effectiveness occurred when the filling ratio was 1:3. The experimental results showed that the heat pipe heat exchanger gained a high efficiency of heat recovery with low flow resistance. The energy conservation effect of this heat-pipe heat exchanger was evident.

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板式热管换热器室内通风热回收特性的实验研究

本研究设计了一种用于室内通风系统的板式热管换热器，用于冷却或加热室外新风。在热管换热器中加入一个新风管和一个排风管，研究热回收系统的热性能。采用新风与排风的风量流量比为1来考察热回收效果和新风温度的变化。夏季模拟条件下，进风口新风温度控制在27 ~ 40℃范围内，冬季模拟条件下，进风口新风温度控制在2 ~ 15℃范围内，夏季和冬季模拟条件下，排风温度分别控制在24℃和18℃左右。实验结果表明，在夏季条件下，新风和排风的温度变化随进气新风温度的升高而增大，而在冬季条件下，随进气新风温度的升高而减小。板式热管换热器的最大热回收效率在夏季为58%，冬季为62%。不同真空度对效果的影响是中等的。在真空为1 × 10−3 Pa时，填充比为1:3时效果最佳。实验结果表明，该热管换热器具有较高的热回收效率和较低的流动阻力。该热管换热器节能效果明显。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

HVAC&R Research 工程技术-工程：机械

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审稿时长

3 months