CFD analysis of a dual heat recovery system

Abstract

This paper presents a CFD Heat Transfer Analysis of an originally designed system for heat recovery in the building sector. The heat exchanger has a dual role, which means it will produce simultaneously hot water and warm air. The key to the efficiency of the heat exchanger is the heat pipe system which recovers thermal energy from residual hot water and transfers it to the secondary agents. The paper includes a case study structured by different mesh distributions and flow regimes. The purpose of the heat exchanger is to reduce the costs of producing thermal energy and to increase the overall energy efficiency of buildings.

Experimental and Numerical Study of Thermal Performance of an Innovative Waste Heat Recovery System

“…A study [19] made in 2018 presented a heat pipe heat exchanger with concentric tube heat pipes and acetone as working fluid used for low-temperature heat sources. Heat pipes were also used in designing a dual heat recovery system which recovers waste heat from residual fluids and produces simultaneously hot water and warm air [20]. A study [21] presented in 2019 analyzed the possibility of combining heat pipes with phase change materials in order to recover and store thermal energy more efficiently.…”