Experimental study of heat transfer coefficient in trapezoidal and rectangular shape of absorber plate in box type solar cooker
Summary :
Table of Contents
- Abstract
- Introduction
- Therma performance for top heat loss coefficient
- Experimental top heat loss coefficient
- Theoretical top loss coefficient
- Natural convective heat transferin trapezoidal enclosure of box type solar cooker
- Empirical equation for top loss coefficient for rectangular enclosure
- Experimental detail and setup
- Results and dicussion
- Conclusion
- Bibliography
Abstract
The box type solar cooker is the simplest device to convert solar energy into heat energy which is
finally utilized to cook the food staff kept in the cooker. The box type solar cooker are constructed
usually either with rectangular or trapezium absorber plate glass cover enclosure. In this paper simple thermal analysis carried out to evaluate the natural convective heat transfer coefficient hcplg for a trapezoidal absorber plate- lower glass cover enclosure of a double glazed box type solar cooker. The experimental data has been correlated by an equation in the form; Nu=C Ran the values of constant C and n , obtained by simple linear regression analysis are used to calculate the convective heat transfer coefficient for reference wind speed 1.5 to 2.5 m/s. The heat transfer analysis predicts that hcplg varies from 4.85 W/m2 0C to 6.28 W/m2 0C for the absorber plate temperature from 72.4 0C to 150 0C. These results of hcplg are compared with those of rectangular enclosure for the same absorber lower glass cover temperatures and gap spacing. It is found that the values of convective heat transfer coefficient and top heat loss coefficients for rectangular enclosure are lower by 32.5 % and 12% respectively.
Keywords: box-type solar cooker; Convective heat transfer coefficient; Trapezium enclosure; Top
heat loss coefficient.
Latest in the category : Physics & chemistry
1
Spectrum of consciousness: Evolution of the spectrum
Term papers | 10/01/2009 | en | .doc | 13 pages
4
Implementation of vector quantization technique in image compression and speech recognition system
Term papers | 09/21/2009 | en | .pdf | 6 pages
5
Analysis of comparative method for association rule mining
Term papers | 09/21/2009 | en | .pdf | 4 pages
Most downloaded in the last 30 days : Physics & chemistry
2
Synthesis and analysis of Ammonium vanadates and determination of water and Vanadium content in Ammonium decavanadate using manganometry
Research papers | 04/25/2009 | en | .doc | 8 pages
From the same author : Physics & chemistry
1
Trends and problems of Indian industries in the age of globalization
Term papers | 09/18/2009 | en | .doc | 4 pages
4
Paradigm shift in regional planning policies for growth of micro enterprises
Term papers | 09/18/2009 | en | .doc | 7 pages
5
Motivating women for utilizing micro financing: A step towards empowerment
Term papers | 09/18/2009 | en | .doc | 3 pages
Change Currency
Our guarantee :
How it works?
Quality guaranteed
Refunds
Secure payment
Who are we ?
