Parametric optimization of solar air heater having sine wave baffles as turbulators
Sachin Sharma, Randip Kumar Das, Kishor Kulkarni
Abstract
The performance of a solar air heater roughened with sine wave baffles has been calculated in terms of effective and thermal efficiency. Relative baffle length (Lb/LP), relative roughness pitch Pst/e, relative height e/H, angle of attack (α∘), Reynolds number Re, Insolation I and Temperature rise parameter ΔT/I are the operational parameters. The sine wave roughened solar air heater has a higher effective and thermal efficiency than the smooth air heater. The thermal efficiency has boosted to 78%, and the effective efficiency has been improved to 70.8%. A parametric analysis has been carried out to determine the best set of parameters.
Topics & Concepts
TurbulatorBaffleMaterials scienceSine waveThermalMechanicsThermal efficiencyReynolds numberParametric statisticsOpticsAcousticsMeteorologyThermodynamicsPhysicsTurbulenceMathematicsVoltageQuantum mechanicsStatisticsCombustionOrganic chemistryChemistryHeat Transfer MechanismsFluid Dynamics and Turbulent FlowsHeat Transfer and Optimization