Numerical optimization and experimental testing of a new low pressure heat exchanger (LoPHEx) for passive ventilation of buildings
Numerical optimization and experimental testing of a new low pressure heat exchanger (LoPHEx) for passive ventilation of buildings
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DOI：
10.1016/j.applthermaleng.2016.04.143
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发表时间：
2016-06
影响因子：
6.4
通讯作者：
M. Simonetti;G. Fracastoro;G. Chiesa;Stefano Sola
中科院分区：
文献类型：
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作者：
M. Simonetti;G. Fracastoro;G. Chiesa;Stefano Sola
减少一次能源消耗是建筑业的一个重要问题。本文涉及建筑通风系统，重点介绍低压平板换热器，该换热器设计用于低压降和低风速，最大限度地减少风扇的电力消耗。该装置被设计用于被动通风系统中，作为冬季的通风热回收阶段和夏季的显热耗散。CFD模拟用于测试和优化热交换器内部的一些混流装置（或制冷器），以最大限度地减少对风扇的需求，同时仍确保可接受的效率。样机的实验测试与数值模拟结果吻合良好。
Reducing primary energy consumption is an essential issue for the sector of building construction. This paper refers to building ventilation systems and focuses on low pressure flat plate heat exchangers, designed for low pressure drops and low air velocity, minimizing the electrical consumption of fans. The device is conceived for working within passive ventilation systems, as a ventilation heat recovery stage during winter and sensible heat dissipation during summer. CFD simulations are used for testing and optimizing some flow-mixing device (or turbulators) inside the heat exchanger, in order to minimize the need for fans, still assuring an acceptable efficiency. Experimental testing of the prototype is in good agreements with numerical simulations.