Open Access
ARTICLE
PERFORMANCE ANALYSIS OF LONGITUDINAL FIN JET PLATE SOLAR AIR HEATER UNDER CROSS FLOW CONDITION
Rajen Kumar Nayaka,*
, Ravi Shankar Prasada,†
, Ujjwal Kumar Nayaka, Amit Kumar Guptab
a Department of Mechanical Engineering, B.I.T. Sindri, Dhanbad, Jharkhand, PIN 828123, India
b Department of Chemical Engineering, B.I.T. Sindri, Dhanbad, Jharkhand, PIN 828123, India
* Department of Mechanical Engineering, B.I.T. Sindri, Dhanbad, Jharkhand, PIN 828123, India
† Corresponding author. Email: rsprasad.me@bitsindri.ac.in
Frontiers in Heat and Mass Transfer 2022, 19, 1-12. https://doi.org/10.5098/hmt.19.22
Abstract
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.
Keywords
Cite This Article
Nayak, R. K., Gupta, A. K. (2022). PERFORMANCE ANALYSIS OF LONGITUDINAL FIN JET PLATE SOLAR AIR HEATER UNDER CROSS FLOW CONDITION.
Frontiers in Heat and Mass Transfer, 19(1), 1–12.