International Journal of Energy Science
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Open Access journal
ISSN (Print) 2218-6026 - ISSN (Online) 2304-3679
Published by Science and Engineering Publishing Company [49 journals]
- Waste Heat Recovery Study of Spiral Flow Heat Exchanger Used in Hybrid
Solar System with Reflectors
Abstract: Waste Heat Recovery Study of Spiral Flow Heat Exchanger Used in Hybrid Solar System with Reflectors
Author V. N. Palaskar PalaskarS. P. Deshmuk
The combined efficiency of simple hybrid photovoltaic/thermal (PV/T) solar water system is less due to its low concentration ratios and, non-standardization of PV heat exchanger surfaces. The simple and cost effective technique to increase PV/T efficiency is the use of reflectors which will boost solar radiation on PV module surface. Flat reflectors fitted to sides of PV module of hybrid system helps in improving the concentration of solar radiation on it. This paper provides design and performance analysis of spiral flow heat exchanger used in hybrid system with flat reflectors of aluminum sheets. The experimental results like performance efficiencies of photovoltaic, thermal, and combined photovoltaic/thermal system over a range of actual working conditions are discussed and evaluated for latitude of Mumbai. The results at solar radiation of 950 W/m2 and water mass flow rate of 0.042 kg/sec through heat exchanger with reflectors showed combined PV/T efficiency of 71.40 % with PV efficiency of 12.40%.
- Energy Consumption and Economic Growth: A Panel Data Aproach to OECD
Abstract: Energy Consumption and Economic Growth: A Panel Data Aproach to OECD Countries
Author Cem IşıkMuhammad Shahba
This paper purposes to examine the relationship between energy consumption and economic growth in OECD countries during the period of 1980–2010. The panel data methods are used to analyse the causal relationship between energy and growth. It is important to see observe the ways of causality between energy consumption and economic growth for the policy-makers. The research outcomes reveal that there is significant correlation between energy consumption and economic growth in OECD countries.