TY - EJOU
AU - Nayak, Rajen Kumar
AU - Gupta, Amit Kumar
TI - PERFORMANCE ANALYSIS OF LONGITUDINAL FIN JET PLATE SOLAR AIR HEATER UNDER CROSS FLOW CONDITION
T2 - Frontiers in Heat and Mass Transfer
PY - 2022
VL - 19
IS - 1
SN - 2151-8629
AB - The present experimental work has been carried out for a solar air heater under cross flow condition having inline hole jet plate between bottom plate
and absorber plate with longitudinal fins underside the absorber surface. The performance of this inline hole jet plate solar air heater is compared with
the performance of jet plate solar air heaters without longitudinal fins under cross and non-cross flow conditions for similar geometrical and operational
parameters. Results are presented for mass flow rates of air, ṁ1 = 0.020 - 0.070 kg/sec, ṁ2 = 0.018 - 0.041 kg/sec, flow Reynolds number, Reja2 = 2000
- 8000, jet hole diameter, D = 6.0 mm, number of jet hole, N = 561, depth of bottom and upper channel, Z1 = 7.0 cm, Z2 = 7.0 cm, total air depth, Z =
14.0 cm, pitch of the fins, p = 5.0 cm, total number of fins, Nf = 20, height of fins, Lf = 12.0 mm, thickness of fins, δf = 3.0 mm and tilt angle, θ = 22.6o
.
The experiment is performed during the winter season at IIT (ISM) Dhanbad, Jharkhand, India between 09:00 AM – 03:00 PM on hourly basis. The
present investigation shows that the jet plate with longitudinal fins is more efficient than cross and non-cross flow jet plate solar air heater. The mass
flow rates of air ṁ1 and ṁ2 substantially influences the collector efficiency, heat transfer coefficient and Nusselt number. Based on the experimental
data, the empirical correlations for Nusselt number, friction factor and fin effectiveness have been developed.
KW - cross flow
KW - jet plate
KW - longitudinal fins
KW - fin efficiency
KW - fin effectiveness
DO - 10.5098/hmt.19.22