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Degital Simulation for the Direct Torque Control of Induction Motors Using the Circle Flux Path
Authors:LING Jing dong  QIAO Bo  YIN Yong  HE Yao san
Abstract:This paper introduces the importance of developing the Ground-Source Heat pump and describes the prospects of it.with the method used abroad to acquire the temperature profiles within surrounding soil of the underground heat exchanger with buried tubes, in this paper the line heat source theory and thermal resistance network analysis method were used to set up the heat transfer model.The original temperature of the ground is determined by calculation and is compared with test results. Experiments of running single tube and running three series connection tubes are carried out on the built underground exchangers of vertical buried tube type.And the data which can provide reference for the Ground-Soure Heat pump technique are acquired.
Keywords:Ground-Source Heat pump  Vertical Buired Tube Type of Underground Exchanger  Heat Transfer Model
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