所属单位：

建筑设备科学与工程学院

发表刊物：

Energy Conversion and Management

关键字：

中文关键字：数值模拟；DO模型；供回水温度；热舒适，英文关键字：CFD simulations;k–e Renormalization group;Discrete

摘要：

In this paper, the indoor climate using five kinds of under-floor heating pipe layouts (i.e., uniformly laid under-floor heating pipes at center spacing 300 mm, 400 mm and 500 mm, respectively; non-uniformly laid under-floor heating pipes in one loop and two loops) were predicted by k–e renormalization group (RNG) and discrete ordinates radiation (DO) simulation. Computational fluid dynamics (CFD) simulations and variance analysis were used to investigate the differences of vertical air temperature gradients and thermal homogeneity over the floor. The general conclusions from this study are that, among five kinds of under-floor heating pipe layouts, the indoor air temperature field above the floor 0.1 m can be considered as homogeneous, and the maximum temperature difference is no more than 1 C. However, it is found that an abrupt temperature rise can be observed over the floor zones near the heating pipes. The current results of the investigation is validated by recent literatures presented by Hasan (2009) [8] and Catalina (2009) [18]. In comparison with five kinds of under-floor heating pipe layouts (at supply water temperature 50 C and return water temperature 40 C), it is recommended that the best layout method is the under-floor heating pipe uniformly laid at 400 mmcenter spacing, which meets the standard requirements such as NEN-EN-ISO 7730, ASHRAE 55-2004 and GB 50019-2003.

备注：

李安桂2011年再统计

合写作者：

张欧

第一作者：

张华[重名-待确认],李安桂[重名-待确认],高然

论文类型：

期刊论文

卷号：

卷：52

期号：

期：1

页面范围：

页：1295-1304

是否译文：

否

发表时间：

2011-02-01