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首页> 外文期刊>Renewable energy >Thermal performance of triplex-tube latent heat storage exchanger: simultaneous heat storage and hot water supply via condensation heat recovery
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Thermal performance of triplex-tube latent heat storage exchanger: simultaneous heat storage and hot water supply via condensation heat recovery

机译：三重管潜热储热交换器的热性能：通过冷凝热回收同时蓄热和热水供应

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摘要

In refrigeration system, refrigerant condensing will release a lot of heat. Using condensation heat from cold storage refrigeration system to provide heat for domestic hot water preparation and industrial hot water supply promotes energy conservation, and latent heat thermal energy storage (LHTES) has unique advantages. Compared with the shell-and-tube heat exchanger, the triplex-tube heat exchanger (TTHE) can achieve simultaneous heat storage and hot water preparation, but few studies have investigated the thermal performance. A mathematical model of TTHE is established by enthalpy method, and the dynamic characteristics has been studied. The results show that liquid sensible heat transfer, latent heat transfer and solid sensible heat transfer are three stages experience in the whole process. The heat storage rate increases and the heat release rate decreases gradually with the opposite trend, but finally reaches to balance with a stable value. The higher the HTF inlet temperature is, the higher the outlet temperature is, but the temperature difference in stable stage is smaller. With the increase of mass flow rate, its effect on heat release gradually weakened. Under the calculation conditions, phase change material with 80 degrees C transformation temperature for cold storage refrigeration system condensing heat recovery is reasonable. (C) 2020 Elsevier Ltd. All rights reserved.
机译：在制冷系统中，制冷剂凝结将释放大量的热量。采用冷藏制冷系统的冷凝热，为国内热水制备提供热量和工业热水供应促进节能，潜热热能储存（LHTES）具有独特的优势。与壳管热交换器相比，三重管热交换器（TTHE）可以实现同时储热和热水制剂，但很少的研究研究了热性能。通过焓法建立了Tthe的数学模型，并研究了动态特性。结果表明，液体明智的传热，潜热传递和固体明智的传热是整个过程中的三个阶段经验。蓄热速率的增加，热释放速率随着相反的趋势而逐渐降低，但最终达到稳定值的平衡。 HTF入口温度越高，出口温度越高，但稳定阶段的温差越小。随着质量流量的增加，其对热释放的影响逐渐减弱。在计算条件下，具有80℃的相变材料，用于冷藏制冷系统冷凝热回收是合理的。 （c）2020 elestvier有限公司保留所有权利。

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