Study On Indoor Thermal Comfort In Passive Solar House In Cold Area

With the rapid development of economy and sharply increased energy consumption, energy crisis is becoming a worldwide problem. Cost of building energy takes a great part in the total energy consumption in China (about 1/3), so a new kind of passive energy-saving building is in need urgently.Because of the special construction and thermal performance of Trombe-wall, and the corresponding blind/vent autocontrol system, the modified passive solar house is built up with a semi-natural and semi-manual indoor environment, which leads to a fluctuant indoor temperature and humidity field. While the pure natural environment means no extra assistant heating/cooling resource, and the pure manual indoor environment means heating and cooling by air-conditioned system in winter or summer. Hence how to make a deep understanding of passive solar house and set an adaptive thermal comfort index in that environment are the key to its development in the future. Now the thermal comfort indexes commonly used are ASHRAE Standard 55-1992 and ISO7730, which are both based on young people in Europe and unsteady indoor environment. In fact, it is not quite fit for Chinese people in semitropics and in passive non-air-conditioned buildings, as China has different climate and custom from European and the indoor environment in passive non-air-conditoned building is unsteady, which is different from air-conditioned building, either.For the above reasons the thesis foucus on the analysis of thermal comfort in passive solar house. Based on the theoretical study of climate in Dalian and indoor/outdoor environment in air-conditioned/non-air-conditioned buildings, it proposes an adaptive analysis method. Meanwhile, through the survy of environment factors, physiological factors, clothing insulation et.al, the article gives a detailed research on flowing aspects: the temperature and humidity field in the semi-natural and semi-manual indoor environment, the asymmetry radiant caused by the high thermal performance of Trombe-wall, natural ventilation cooling(single side ventilation, cross ventilation, night ventilation, diurnal ventilation, all-day ventilation) on summer over-heat in passive solar house, the relationship between clothing insulation and human body heat exchange with indoor environment, psychological and behavioral adaption on thermal comfort. Furthermore, according to the thermal comfort questionary, this paper also makes a regressive analysis and curve-estimation of thermal neutral temperature T_n, TSV (Thermal Sensation Vote) and PMV (Predicted MeanVote) on environment and physiological factors. After a detailed comparison of PMV index between air-conditioned buildings and non-air-conditioned buildings, the thesis draws a new thermal comfort zone in passive solar house in Dalian, which provides a reference thermal comfort study in China on both theoretics and experiment.