Open Access
ARTICLE
ANALYTICAL STUDY OF THERMAL PERFORMANCE OF A JET PLATE SOLAR AIR HEATER WITH THE LONGITUDINAL FINS UNDER THE CROSS FLOW AND NON-CROSS FLOW CONDITIONS
Rajen Kumar Nayaka,*
, Ravi Shankar Prasada,†
, Ujjwal Kumar Nayaka, Amit Kumar Guptab
a Department of Mechanical Engineering, B.I.T. Sindri, P.O.: Sindri Institute, Sindri, Dhanbad, Jharkhand PIN 828123 India
b Department of Chemical Engineering, B.I.T. Sindri, P.O.: Sindri Institute, Sindri, Dhanbad, Jharkhand PIN 828123 India
* Department of Mechanical Engineering, B.I.T. Sindri, P.O.: Sindri Institute, 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.19.7
Abstract
This analytical study has been carried out on inline and staggered hole jet plate solar air heater with longitudinal fins attached underside the absorber
surface under the cross flow and non-cross flow conditions of air through the channels for varying mass flow rate of air, ṁ
1 (50-300 kg/hm
2
), jet hole
diameter, D (6 mm-10 mm) and distance between the absorber and jet plate, Z
2 (5 cm-10 cm) with fixed number of jet holes, N (480 and 1008 for inline
and staggered hole respectively) and pitch of the fins, p (3 mm). The result shows the performance of staggered hole jet plate solar air heater with
longitudinal fins under non-cross flow is better than cross flow condition. The increment of T
o and h
Pj are found higher in non-cross flow staggered
hole jet plate solar air heater with longitudinal fins at smaller jet hole diameter, D (6 mm) than larger jet hole diameter, D (8 mm and 10 mm) for fixed
ṁ
1 (50 kg/hm
2
). For fixed mass flow rate of air, ṁ
1 (50-300 kg/hm
2
), the outlet air temperature (T
o) and collector efficiency (η
c) are obtained higher at
lower Z
2 (5 cm) with respect to larger Z
2 (6 cm-10 cm). For the fixed Reynolds number (Re
ja2), the required pumping power may be less or high in
non-cross flow staggered hole jet plate than non-cross flow inline hole jet plate air heater with longitudinal fins attached underside the absorber surface.
Keywords
Cite This Article
Nayak, R. K., Gupta, A. K. (2022). ANALYTICAL STUDY OF THERMAL PERFORMANCE OF A JET PLATE SOLAR AIR HEATER WITH THE LONGITUDINAL FINS UNDER THE CROSS FLOW AND NON-CROSS FLOW CONDITIONS.
Frontiers in Heat and Mass Transfer, 19(1), 1–12.