Combined thermal and daylight analysis of a typical public rental housing development to fulfil green building guidance in Hong Kong
Combined thermal and daylight analysis of a typical public rental housing development to fulfil green building guidance in Hong Kong
复制标题
DOI：
10.1016/j.enbuild.2015.09.032
复制
发表时间：
2015-12
影响因子：
6.7
通讯作者：
Xi Chen;Hongxing Yang
中科院分区：
文献类型：
--
作者：
Xi Chen;Hongxing Yang
为满足当地绿色建筑指南的要求，对香港公租房开发项目进行了日光、气流网络和建筑能耗的综合模拟。数值模拟结果通过月平均室外温度最高时段的现场观测得到了部分验证。为了优化自然通风性能，对不同的通风控制策略进行了模拟。模拟结果表明，与不通风和夜间通风相比，全天通风策略有助于降低室内平均温度和峰值温度。在7月份67.5%的模拟期内，最糟糕情况下空置单位的室内运行温度低于ASHRAE 55中可接受的上限80%。另一方面，案例建筑中至少95.6%的宜居面积预计将经历比当地绿色建筑指南更高的1%的平均日照系数。此外，与基线建筑相比，自然通风和采光相结合的策略在空调和照明方面的节能潜力预计分别为51.9%和8.3%。
This paper presents a combined daylight, airflow network and building energy simulation of a Public Rental Housing (PRH) development in Hong Kong to fulfil the requirement of the local green building guidance. The numerical modelling results are partly validated by on-site measurements during the period with the highest monthly average outdoor temperature. Different ventilation control strategies are simulated to optimize natural ventilation performance. The simulation results show that the full-day ventilation strategy contributes to a lower average and peak indoor temperatures compared to the non-ventilation and night-ventilation scenarios. The indoor operative temperature of a worst-case vacant flat lies under the upper 80% acceptability limits in ASHRAE 55 during 67.5% of the modelled period in July. On the other side, at least 95.6% of the habitable area in the case buildings is predicted to experience a higher average daylight factor of 1% compared with the local green building guidance. Furthermore, the energy saving potential of the combined natural ventilation and daylight strategies is anticipated to be 51.9% for air-conditioning and 8.3% for lighting compared to a baseline building, respectively.