Abstract
In cold regions, radiant floor heating systems are commonly used in public buildings due to better thermal comfort and lower energy consumption. However, in transportation buildings with many transparent envelopes such as railway stations on Tibetan Plateau, the strong solar radiation entering into the station may cause local overheating, which has a great effect on the radiant floor heating system. In this paper, a railway station on Tibetan Plateau is simulated to investigate the influence of uneven solar radiation distribution on the radiant floor heating system. Results show that due to the strong solar radiation, the floor surface temperature and indoor operative temperature in some parts of the waiting hall can reach up to 30 °C and 26 °C, respectively. The temperature difference of the floor surface can even exceed 5 °C occasionally during the heating period. According to the results, it can be found that the method of reducing the heating in the area with strong solar radiation and making full use of solar radiation for heating is an effective way to improve the indoor thermal comfort and reduce the heating energy consumption of heating system.
Highlights
Transportation buildings such as railway stations are developing very quickly in China
It can be seen from Fig. 7. that the solar radiation on the floor surface has a huge difference between the S zone and the W zone
Solar radiation is extremely strong on Tibetan Plateau and it irradiates on part of the radiant floor surface through the transparent envelope of building
Summary
Transportation buildings such as railway stations are developing very quickly in China. Extensive window on the southern exterior wall is the most striking feature in some buildings In this way, enough solar radiation can be brought into the room for heating [4]. A railway station on Tibetan Plateau is selected as the study building, the thermal model of which is built to study the influence of uneven solar radiation distribution on the radiant floor heating system by Ecotect and Energyplus software. According to the uneven solar radiation distribution, this paper divides the heating system into the S zone strongly influenced by solar radiation and the W zone weakly influenced by solar radiation Both the indoor temperature and the energy use of the radiant floor system between the S zone and W zone are compared
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
