Welcome To UTPedia

We would like to introduce you, the new knowledge repository product called UTPedia. The UTP Electronic and Digital Intellectual Asset. It stores digitized version of thesis, dissertation, final year project reports and past year examination questions.

Browse content of UTPedia using Year, Subject, Department and Author and Search for required document using Searching facilities included in UTPedia. UTPedia with full text are accessible for all registered users, whereas only the physical information and metadata can be retrieved by public users. UTPedia collaborating and connecting peoples with university’s intellectual works from anywhere.

Disclaimer - Universiti Teknologi PETRONAS shall not be liable for any loss or damage caused by the usage of any information obtained from this web site.Best viewed using Mozilla Firefox 3 or IE 7 with resolution 1024 x 768.

Experimental Investigation of Natural Convection from Pinned Plate Solar Absorber

Mat Ghani, Normanisah (2012) Experimental Investigation of Natural Convection from Pinned Plate Solar Absorber. UNIVERSITI TEKNOLOGI PETRONAS, UNIVERSITI TEKNOLOGI PETRONAS. (Unpublished)

[img]
Preview
PDF
Download (3104Kb) | Preview

Abstract

Solar collector consists of a solar absorber which absorbs heat from short wave solar radiation and transfers the heat to the working fluid for storage or use. Instead of merely a normal flat plate, staggered pinned plate absorbers with different surface roughness – 2 mm, 3mm and 4 mm height are introduced in this project. The main interest is on the effect of turbulence of absorber plates on the natural convection heat transfer process of the air heating solar collectors. The paper investigates the effect of inclination angle and absorber types on the heat transfer, solar insolation, air outlet temperature and velocity, etc. It involves series of experimental works conducted on 4 solar collector test rigs simultaneously that were ran at 10°, 30°, 50°, 70° and 90° inclination angles. For each configuration, the experiments are repeated for four consecutive days. Readings were recorded at two hours intervals from 8am until 6pm for data collection of the investigated parameters. Solar insolation is higher for system at lower inclination angle yet for convective heat transfer coefficient; it is optimum at 50° inclination angle which best at 45°. Solar collectors with pinned plate absorbers are noticeably provides better outlet temperature and heat transfer rate than a normal flat plate absorber where the 2mm is the best pursued by 3mm and 4mm pinned absorbers. The boundary layer is disturbed in channel with pinned plate thus the effect of added turbulent enhance the heat transfer. The overall system at all configurations possesses a mixed convection, turbulent flow behavior thus invalid the claims of natural convection.

Item Type: Final Year Project
Academic Subject : Academic Department - Mechanical Engineering - Materials - Engineering materials - Composites material - Natural composites
Subject: T Technology > TJ Mechanical engineering and machinery
Divisions: Engineering > Mechanical
Depositing User: Sharifah Fahimah Saiyed Yoep
Date Deposited: 01 Apr 2013 11:34
Last Modified: 25 Jan 2017 09:40
URI: http://utpedia.utp.edu.my/id/eprint/6235

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...