Experimental evaluation of a solar water heater integrated with a corrugated absorber plate and insulated flat reflectors

Nassir D. Mokhlif; Muhammad Asmail Eleiwi; Tadahmun A. Yassen; Nassir D. Mokhlif; Muhammad Asmail Eleiwi; Tadahmun A. Yassen

doi:10.3934/energy.2023027

AIMS Energy

2023, Volume 11, Issue 3: 522-539. doi: 10.3934/energy.2023027

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Experimental evaluation of a solar water heater integrated with a corrugated absorber plate and insulated flat reflectors

1.
Department of Petroleum and Gas Refining Engineering, College of Petroleum Processes Engineering, Tikrit University, Tikrit, Iraq
2.
Department of Mechanical Engineering, College of Engineering., Tikrit University, Tikrit, Iraq
3.
Department of Electromechanical Engineering, College of Engineering., University of Samarra, Samarra, Iraq

Received: 22 January 2023 Revised: 17 May 2023 Accepted: 18 May 2023 Published: 08 June 2023

When it comes to renewable energy, solar water heaters are among the fastest-growing technologies. Comparatively speaking, integrated collector-storage solar water heater systems cost less than other solar water heater designs. Therefore, both the construction and the operation of a combined collector-storage solar water heater are quite straightforward. The integrated storage solar collector coupled with reflectors has been experimentally investigated. The reflectors were insulated from the back side when working during the day hours and as insulated cover during the night hours. While comparing the combined collector-storage solar water heater with and without insulated reflectors, the results showed that the insulated reflectors increased the thermal efficiency by 23%. Furthermore, on the coldest day, the stored water reached a high of 82 degrees Celsius, though it was only 46 degrees Celsius that same morning.
- integrated solar water heater,
- reflectors,
- corrugated absorber,
- double glass
Citation: Nassir D. Mokhlif, Muhammad Asmail Eleiwi, Tadahmun A. Yassen. Experimental evaluation of a solar water heater integrated with a corrugated absorber plate and insulated flat reflectors[J]. AIMS Energy, 2023, 11(3): 522-539. doi: 10.3934/energy.2023027

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Abstract

When it comes to renewable energy, solar water heaters are among the fastest-growing technologies. Comparatively speaking, integrated collector-storage solar water heater systems cost less than other solar water heater designs. Therefore, both the construction and the operation of a combined collector-storage solar water heater are quite straightforward. The integrated storage solar collector coupled with reflectors has been experimentally investigated. The reflectors were insulated from the back side when working during the day hours and as insulated cover during the night hours. While comparing the combined collector-storage solar water heater with and without insulated reflectors, the results showed that the insulated reflectors increased the thermal efficiency by 23%. Furthermore, on the coldest day, the stored water reached a high of 82 degrees Celsius, though it was only 46 degrees Celsius that same morning.

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