Numerical Study on Energy Consumption Characteristics for Wall Insulation Structure in Hot Summer and Cold Winter Zone

Abstract:

In this paper the software DeST was adopted as simulation tool for hourly dynamic simulation analysis for the summer cooling energy consumption of different interior and outer structure systems. Then the software Fluent was adopted for dynamic simulation analysis by seconds for the enclosure structures surface temperature and heat flow within 10~14 days. The results show that in hot summer and cold winter zone the energy-saving rate is less than 5% when only outer wall is in exterior insulation and intermittent use energy characteristics, but if the outer and interior walls are all in the external thermal insulation, the energy-saving rate will be greatly improved; Under the condition of unsteady, wall temperature fluctuation is far less than the outdoor environment temperature and the range of maximum and minimum temperature is only 2 ~ 3 °C,besides the range will be smaller only to 0.5 °C or so if using external thermal insulation; Finally the air conditioning energy consumption differences with Different retaining structures mainly reflected as the size of heat flux on the interior surface of the wall. Base on the intermittent and loculose energy use characteristics in hot summer and cold winter zone the heat flux dissipated on interior wall are the main part.

• Periodical: Applied Mechanics and Materials (Volumes 361-363)
• Pages: 300-306
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.361-363.300
• Online since: August 2013
• Authors: Min Li Wu*, Xiao Qian Qian, Yao Tai Zhu
• Keywords: Building Envelope, Cold Winter Zone, Dynamic Simulation, Energy Consumption (EC), Hot-Summer Area

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DOI: 10.4028/www.scientific.net/amm.256-259.2656

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