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Some Factors Affecting the Performance of Windheat Generation System

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  Paper number  024236,  2002 ASAE Annual Meeting . (doi: 10.13031/2013.10539) @2002
Authors:   Y. J. Kim, Y. S. Ryou, Y. H. Yoon, K. C. Kang and Y. Baek
Keywords:   Wind Energy, Heat Generation Drum, Alternative Energy, Greenhouse Heating, Fluid Friction, Fluid frictional energy

The wind-heat generation system is consisted of an electric motor, a heat generation drum , a heat exchanger, two circulation pumps and a water storage tank where heat generation drum is the essential element to determine performance of the system. Frictional heat is creating by rotational movement of rotor in the drum contained fluid and the heat gained is using to increase water temperature via heat exchanger. Some factors such as rotor shape, fluid kind and amount, rotor rpm and water flow rate in the heat exchanger affecting the system performance were analyzed and discussed in this paper. Heat generation amounts were varied, ranging from 3,000 to 7,800 /hr, depending on the factors combination. Statistical analysis using GLM procedure revealed that the most influential factor to decide the system performance is fluid amount in the drum, ie, fluid depth in the drum. Since the rotor are rotating in higher rpm, the more frictional area we provide the more heat amount we could achieve, the experiment showed. The greatest efficiency of the heat generation system, electric power consumption rate vs gained heat amount of water, was about 70%. Though the heat amount is not big enough for plant bed heating of 0.1 ha greenhouse it is quite promising if we add some supplement heat source, let say air to water heat pump for which we are investigating the potential.

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