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Heat Transfer Research
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ISSN Imprimer: 1064-2285
ISSN En ligne: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.2018025767
pages 659-670

HEAT LOSS ANALYSIS AND OPTIMIZATION OF HOUSEHOLD SOLAR HEATING SYSTEM

Jieyuan Yang
Western China Energy and Environment Research Center, Lanzhou University of Technology, Lanzhou 730050, China; Key Laboratory of Complementary Energy System of Biomass and Solar Energy, Lanzhou 730050, China
Jinping Li
Western China Energy and Environment Research Center, Lanzhou University of Technology, Lanzhou 730050, China; Key Laboratory of Complementary Energy System of Biomass and Solar Energy, Lanzhou 730050, China
Rong Feng
Shaanxi Key Laboratory of Industrial Automation, Shanxi University of Technology, Hanzhong 723001, China

RÉSUMÉ

Renewable energy sources have the leverage of unlimited availability and environmental friendliness, therefore, they are the optimal alternation for fossil fuel. Among all renewable energy sources, solar energy is the most signifi cant due to the safety and sustainability. Based on this fact, utilization of solar thermal energy has increased sharply mainly for heating and cooling applications. In order to analyze and optimize the heat loss associated with the household solar heating system, an experimental model was built and tested in Minqing County, Gansu Province, China. In this work, the multiple linear regression method is considered to address the outcomes. The relationship between the environmental factors (such as wind speed, ambient temperature, and the temperature of the heating water tank) and the indoor temperature is identifi ed. The experimental results indicate that the convection heat loss of the tank accounted for more than 86% of the heat loss at night. Changes in the supply mode for the night time heating can save about 685.38 kg of standard coal, 0.47 tons of CO2, 11.31 kg of SO2, and 10.69 kg of NOx emissions, which are equivalent to an annual value of more than 1028.07 yuan. A shift to the use of renewable energy has clear economic, energy-saving, and environmental benefits.


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