Naslov
A Numerical and Experimental Study of Transient Heat Transfer in a Shell-and-Tube Latent Heat Storage Unit with Paraffin as a Phase Change Material

Autori
Trp, Anica

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

Izvornik
Proceedings of the International Congress Energy and the Environmnet 2002, Vol. II / Franković Bernard - Rijeka : Hrvatska stručna udruga za sunčevu energiju, 2002, 35-46

Skup
Energy and the Environment 2002 / Energija i okoliš 2002

Mjesto i datum
Opatija, Hrvatska, 23.10.2002. - 25.10.2002

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
transient heat transfer; latent heat storage unit; numerical analysis; experiment

Sažetak
A physical process of transient heat transfer in the shell-and-tube latent heat storage unit has been analysed numerically and experimentally in this paper. Heat transfer considered in the paper is the conjugate problem of transient forced convection between heat transfer fluid and the wall, heat conduction through the wall and heat exchange of the phase change material. Governing dimensionless differential equations for heat transfer fluid, wall and phase change material with initial and boundary conditions have been discretised by a control volume approach and then solved by Fortran software using an iterative procedure. The numerical model is validated with experimental data. Commercial paraffin RUBITHERM RT 30 has been used in experimental investigations as a phase change material. Mutual agreement has been established between numerically and experimentally obtained timewise temperature variations. Unsteady temperature distributions of heat transfer fluid, wall and phase change material have been obtained by numerical calculations and thermal behaviour of latent heat storage unit during charging and discharging has been simulated.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo, Temeljne tehničke znanosti

POVEZANOST RADA