Calculation and Analysis of Gravity Head Coefficient in Hot Water Heating System

Abstract:

This paper presented a method of mathematical expectation to calculate gravity head coefficient, and this method was applied to calculate the value of gravity head coefficient of some selected cities in China in different operation regulation mode and different design supply and return water temperature. The results show that gravity head coefficient calculated by this method reflects the average value during the whole heating period. It has more representative significance. When the temperature of design supply and return water in heating system is reduced, the gravity head coefficients change very little. In different operation regulation modes, the gravity head coefficients change larger. The gravity head coefficients have a certain difference in different areas.

• Periodical: Applied Mechanics and Materials (Volumes 580-583)
• Pages: 2432-2437
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.580-583.2432
• Online since: July 2014
• Authors: Wen Wen Xie*, Yong Zheng Fu
• Keywords: Design Supply and Return Water Temperature, Gravity Head Coefficient, Mathematical Expectation, Operation Regulation

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