Abstract
The present work has been presented to improve efficiency by using jet impingement through the corrugated absorber plate. Due to this, jet impingement turbulence enhancement takes place because of which the rate of thermal heat gain increases. The thermohydraulic efficiency of SAH was calculated at four different mass flow rates and 500 W/m2 solar radiations. The fan power requirement to propel the air inside the section is small for a lower mass flow rate. Thus, the consequence of jet size, no. of jets (N), has been discussed to predict an optimum configuration of SAH. Current research shows that 3 mm jet size, 70 jets, and 0.015 kg/s offer the highest thermohydraulic efficiency. The maximum thermal efficiency and outlet temperature (TO) were found at h/D = 0.40. From the analysis, it can be concluded that the thermohydraulic efficiency enhances with an increase in mass flow rate up to a specific value, but beyond it, ηTHE starts declining.
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Abbreviations
- A :
-
Area of the glass plate (mm2)
- H :
-
SAH height (mm)
- I :
-
Solar Radiations (W/m2)
- k :
-
Thermal conductivity (W/m·K)
- L :
-
SAH length (mm)
- N :
-
Number of jets
- P :
-
Pitch (mm)
- P f :
-
Fan Power (W)
- T i :
-
Inlet Temperature (K)
- T o :
-
Outlet Temperature (K)
- W :
-
SAH width (mm)
- MFR :
-
Mass Flow Rate (kg/s)
- H :
-
Height (mm) (in Fig. 10)
- D :
-
Width (mm) (in Fig. 10)
- Α :
-
Absorptivity of glass plate
- α a :
-
Absorptivity of absorber plate
- ε :
-
Emissivity of glass plate
- Τ :
-
Transmissivity of glass plate
- Ρ :
-
Fluid density
- η THE :
-
Thermohydraulic efficiency
- η th :
-
Thermal efficiency
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Sharma, A., Thakur, S., Kumar, D., Kumar, A., Dhiman, P. (2023). Performance Analysis of a Jet Impinged Solar Air Heater Having the Corrugated Absorber Plate: A CFD Approach. In: Mishra, D.P., Dewangan, A.K., Singh, A. (eds) Recent Trends in Thermal and Fluid Sciences. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-19-3498-8_8
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