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Experimental Research and Heat Transfer Model of Gas-Heater Radiant Floor and GSHP Radiant Floor

Author: WangWen
Tutor: HeXueBing；LiuXianYing
School: Chongqing University
Course: Heating,Gas Supply, Ventilation and Air Conditioning Engineering
Keywords: Radiant floor Gas water heater Ground source heat pump Heat transfer model
CLC: TU832.16
Type: Master's thesis
Year: 2001
Downloads: 283
Quote: 4
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Abstract


Radiant floor as a new air terminal equipment , the use of radiation and convection in the form of room cooling or heating ; compared with conventional air conditioning blast , thermal comfort , energy conservation , aesthetics , environmental impact . This paper describes the gas water heater - radiant floor heating test and ground source heat pump - radiant floor heating and cooling associated for the test , collate and analyze the test results in radiant floor under different hot and cold source for hot and cold parameters , radiant floor performance and compared with the conventional air-cooled heat pump air conditioner or fan coil air supply . Analysis on the basis of the radiation the floors heat transfer mechanism , the paper by heat conduction , heat transfer model of radiant floor space natural convection heat transfer and heat transfer theory , using the finite difference method to solve the model , from the radiant floor for hot and cold performance parameters such as average floor surface temperature , heat flux , the floor surface recombination heat transfer coefficient with the measured values ??a difference of less than 20% , to meet the engineering requirements ; draw coil water temperature radiant floor at the same time affect the floor for Conclusion of the hot and cold properties of the important factors . By winter and summer ground source heat - radiant floor cogeneration system test of the long - term operating conditions , a qualitative analysis of ground source heat pump radiant floor cogeneration systems for hot and cold performance and condenses on the surface of the floor cooling , Finally, an engineering practice to verify the practicality of the system . Gas water heater and heating , radiant floor heating and ground source heat pump heating radiant floor heating comparison of the performance of the experiment can be seen above the gas water heater heating coefficient of performance of the ground source heat pump , but also in the transition at the same time in the middle and lower reaches of the Yangtze River season use of closed cycle water absorption of the soil cold room cooling , improve the economic system running . In addition, the experimental system , the measured data of the radiant floor system engineering practice has a guiding role .

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CLC: > Industrial Technology > Building Science > Housing construction equipment > Air-conditioning, heating, ventilation,and its equipment > Heating > Heating system > Radiant heat heating system
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