Jet impingement in a V-rib roughened solar air heater: an experimental approach. Issue 3 (14th September 2022)

• Record Type: Journal Article
• Authors: Sharma, Amitesh; Thakur, Sushant; Dhiman, Prashant
• Is Part Of: Energy sources. Volume 44:Issue 3(2022)
• Page Start: 6970
• Page End: 6984
• Publication Date: 2022-09-14
• Subjects: Artificial roughness -- jet impingement -- thermohydraulic efficiency -- Reynolds number -- Nusselt number; Natural resources -- Periodicals; Energy consumption -- Periodicals; Energy consumption -- Climatic factors -- Periodicals; Energy conversion -- Periodicals; Energy conversion -- Environment aspects -- Periodicals; Power (Mechanics) -- Periodicals; 333.7905
• DOI: 10.1080/15567036.2022.2105988
• Languages: English
• ISSNs: 1556-7036

Abstract

ABSTRACT: The present research article is an experimental investigation of an impinging jet solar air heater with V-patterned ribs on a modified absorber plate. The study attempts to combine active-passive jet impingement techniques focusing on varying jet parameters and variation in the arrangement of the V pattern. The experimental trials are conducted by varying parameters as follows: streamwise pitch ratio of circular jets X s t / D h d from 0.35 to 0.50, the span-wise pitch ratio of circular jets Y s p / D h d from 0.79 to 0.94, and width ratio of V-patterned ribs w/W from 1 to 6. The geometrical parameter is kept constant, viz. angle of attack (α) = 60°, pitch ratio P/e = 10, and rib height ratio e / D h d =0.043. The range for Reynolds number is kept between 4000 and 16, 600, and solar insolation was 1000 W/m 2 . The results indicated that jet impingement on the ribbed absorber plate enhances thermal and thermohydraulic efficiencies. The maximum reported Thermal-Hydraulic Performance in the present study was 3.301. Graphical Abstract 2017: uf0001