Numerical analysis of the indoor thermal environment under the condition of heating in northern China

作者：Wang Ye^*; Wang Jingwen; Wang Liangbi; Zhang Wenxia

来源：Journal of Harbin Engineering University, 2014, 35(11): 1441-1445.

DOI：10.3969/j.issn.1006-7043.201310074

• Building envelopes
• Flow field structure
• Heat transfer characteristics
• Indoor
• Indoor thermal environments
• Temperature stratification
• Thermal environment
• Thermal performance of buildings

In this paper, the relevance between the thermal performance of building envelope and the heat transfer characteristics of the indoor radiators in a heating season was studied. A revised k-Ε model was used to numerically analyze the indoor thermal environment of a residential house in Lanzhou, China. The objective was to obtain the velocity field, temperature field and heat transfer characteristics of the radiator under four types of external walls of the house. The results indicate that the Nusselt numbers on the radiator surface are increasing with the increasing outerwall thermal conductivity when the indoor average temperature is up to 18°C. The temperature stratification in the room is very obvious. The temperature close to the floor is decreasing with the increasing outerwall thermal conductivity, the so-called "cold air lake" thickness becomes thinner and thinner from the east wall to the west wall. The difference of indoor flow field structure is very small for the given four types of outerwall.

• 出版日期2014