Parametric Consideration of a Thermal Water Pump and Application for Agriculture

Author:

Sitranon Jirawat1,Lertsatitthanakorn Charoenporn1,Namprakai Pichai1,Prathinthong Naris1,Suparos Taveewat2,Roonprasang Natthaphon3

Affiliation:

1. Department of Energy Technology, School of Energy, Environment and Materials, King Mongkut's University of Technology, Thonburi, Bangkok 10140, Thailand e-mail:

2. Department of Energy Technology, Faculty of Industrial Education and Technology, King Mongkut's University of Technology, Thonburi, Bangkok 10140, Thailand e-mail:

3. Department of Alternative Energy Development and Efficiency, Ministry of Energy, 17 Rama I Road, Kasatsuk Bridge, Pathumwan, Bangkok 10330, Thailand e-mail:

Abstract

This research studied the effects of suction heads on the efficiency of a thermal water pump with steam. In order to save energy, the authors also studied the appropriate amount of air added to a steam working fluid. Cooling time was attempted to be shorten, direct contact cooling was employed. The system comprised feed water tank (FT), liquid piston tank (LT), heat tank (HT), storage tank (ST), well tank (WT), and check valve (CV). It was directly cooled by cooling water. Thermal energy input was supplied by an electric heater as a substitute of heat sources such as firewood. An operation of the pump consisted of five stages: heating, pumping, vapor-flow, cooling, and suction. In conclusion, increasing the suction head raised the pumping efficiency until the maximum was achieved. Using air in conjunction with the steam working fluid could lower the working temperature suitable for solar application. In addition, the simulation of a thermal pump with steam was merely presented. A good agreement between the test and the model was found. The larger pump size was selected to be constructed and tested in order to increase the pump efficiency. Agricultural application of the larger pump could obtain energy source from waste of firewood at no cost.

Publisher

ASME International

Subject

Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment

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