Thermal Performance of Double Pass Solar Air Collector: Numerical and Experimental Investigation

Author:

Belloufi Yousef12,Rouag Amar34,Aissaoui Faris25,Benmachiche Abdelmoumene-Hakim6,Brima Abdelhfid1

Affiliation:

1. 1 Univerité Kadi Merbah Ouargla, Faculté Des Hydrocarbures , Département De Forage Et Mécanique Des Chantiers Pétroliers BP 511 Ouargla 30000 , Algeria .

2. 2 Laboratoire de Génie Mécanique , LGM, Université de Biskra , B.P.145 R.P. 07000 Biskra , Algeria .

3. 3 Univerité Kadi Merbah Ouargla, Faculté Des Hydrocarbures , Département Des Energies Renouvelables , BP 511 Ouargla 30000 , Algeria .

4. 4 Laboratoire de Génie Energétique et Matériaux (LGEM) , Université Mohamed Khider Biskra , B.P.145 R.P. 07000 Biskra , Algeria .

5. 5 Université de Ghardia, Faculté des Science et de la Technoogie , Département D’automatique et D’éléctomécanique , Algeria .

6. 6 Département de Physique , Université de Batna , Algeria .

Abstract

Abstract In this research study, the development of a theoretical model to estimate the efficiency of a double pass solar air heater (DPSAH) was the main objective. The mathematical model was compared to experimental results and found to be in agreement, both qualitatively and quantitatively. The model used energy balance equations to determine the outlet temperature and could solve the temperature equations of each component of the heater simultaneously. A matrix inversion method was used for this purpose. The study found that increasing the Nusselt number led to an increase in energy efficiency, but also caused a drop in outlet temperature at any solar radiation. The mass flow rate (MFR), with larger flow rates resulting in better efficiencies, had a significant impact on the double pass air heater's efficiency. Thus, increasing of DPSAH’s length increases its thermal performances and reach its maximum values for L=9m. These findings could be beneficial in selecting the most efficient design parameters for DPSAH.

Publisher

Walter de Gruyter GmbH

Subject

General Materials Science

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