Naslov
Numerical analysis of heat transfer in air-water heat exchanger with microchannel coil

Autori
Glažar, Vladimir ; Trp, Anica ; Lenić Kristian ; Torbarina, Fran

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
E3S Web of Conferences Volume 95 (2019) The 3rd International Conference on Power, Energy and Mechanical Engineering (ICPEME 2019) / Agarwal, Ramesh K. - : EDP Sciences, 2019

Skup
The 3rd International Conference on Power, Energy and Mechanical Engineering (ICPEME 2019)

Mjesto i datum
Prag, Češka Republika, 16.02.2019. - 19.02.2019

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
heat exchanger ; microchannel coil ; numerical analysis ; air and water model

Sažetak
This paper presents numerical analysis of fluid flow and heat transfer in the heat exchanger with microchannel coil (MCHX). In accordance with previously published experimental results, 3D mathematical model has been defined and appropriate numerical simulation of heat transfer has been performed. Geometry and working parameters of cross- flow air-water heat exchanger with microchannel coil, installed in an open circuit wind tunnel and used in experimental investigations, have been applied in numerical analysis in order to validate the mathematical model. 3D model with air and water fluid flow and heat transfer domains has been used, as it gives more precise results compared to models that assume constant temperatures or constant heat fluxes on the pipe walls. Developed model comprised full length of air and water flows in the heat exchanger. Due to limitations of computational capacity, domain has been divided in multiple computational blocks in the water flow direction and then solved successively using CFD solver Fluent. Good agreement between experimentally measured and numerically calculated results has been obtained. The influence of various working parameters on heat transfer in air-water heat exchanger has been studied numerically, followed with discussion and final conclusions.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA