Finite Element Modeling Of Finned Double-Pass Solar Air Heaters

Hussain, Mohammed Khalil; Rasham, Ali M.; Alshadeedi, Bajel Mohammed

doi:10.1109/icece51984.2021.9406296

Cited by 2 publications

(1 citation statement)

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“…A comparison between the three configurations in terms of velocity vector has been presented in Figs 9a-i for different mass flow rates. As observed from these figures, the location of maximum velocity at the end of the lower channel, and the flow separate at the beginning of the upper channel, and this separation increases as the air mass flow rate increases (Hussain et al 2021).…”

Section: Air Velocity Vectorsmentioning

confidence: 52%

Thermal Performance of Double Pass Solar Air Heater With Tubular Solar Absorber

Hussein

Ahmed

Ekaid

2022

Int. J. Renew. Energy Dev.

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In this investigation, the effect of replacing the conventional solar absorber with a new solar absorber on the thermal performance of a double-pass solar air heater has been studied experimentally and numerically. Three configurations have been introduced, the first configuration is a double pass solar air heater with a flat plate solar absorber (DPSAHWFP) for the aim of comparison, and the second configuration is a double pass solar air heater with a tubular absorber that includes a set of tubes which are fitted perpendicularly to the direction of airflow (DPSAHWT-1), and the third configuration is double-pass solar air heater with a tubular absorber that involves set of tubes which are fitted in parallel to the direction of airflow (DPSAHWT-2). The experiments have been carried out under indoor conditions at a constant heat flux equal to 1000 W/m2 and different air mass flow rates (0.01– 0.03 kg/s). The results revealed that the air mass flow rate has a substantial impact compared to the rise in air temperature, hence, the thermal performance of solar air heater is directly proportional to increase air mass flow rate. In addition, the experimental and numerical outcomes indicated that for all air flow rates. The (DPSAHWT-2) offers higher thermal performance as compared to other models, where the maximum effective efficiency has been obtained at 0.03 kg/s equal to 80.9 %. Moreover, (DPSAHWT-2) is more efficient than DPSAHWFP and DPSAHWT-1 by 4.2 % and 9.8 % respectively.

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Section: Air Velocity Vectorsmentioning

confidence: 52%