Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
On-site measured performance of a radiant floor cooling/heating system in Xi’an Xianyang International Airport
In large space buildings such as airports, radiant floor systems are an attractive alternative to conventional all-air jet ventilation systems due to their advantages in thermal comfort and energy efficiency. This paper focuses on the operating performance of the radiant floor system in Terminal 3 of Xi’an Xianyang International Airport, the first airport terminal in China to adopt radiant floors for cooling. In summer, the typical cooling capacity of the radiant floor is 30–40 W/m2 with a mean chilled water temperature of 18 °C; this range increases to 110–140 W/m2 with solar radiation of 120–170 W/m2. The incremental effect of the solar radiation on the cooling capacity of radiant floor is analyzed with simple calculation methods. In winter, the radiant floor provides a heating capacity of 30–70 W/m2 with a hot water temperature of 35–40 °C, which is sufficient to satisfy the heating requirement. Compared with the jet ventilation system adopted in Terminal 2 of the same airport, indoor thermal comfort is significantly improved with the radiant floor system in Terminal 3 in both cooling and heating modes. Moreover, the novel system’s indoor air temperature distribution throughout the whole space and its utilization of high-temperature chilled water and low-temperature hot water reveal its potential for energy conservation.
On-site measured performance of a radiant floor cooling/heating system in Xi’an Xianyang International Airport
In large space buildings such as airports, radiant floor systems are an attractive alternative to conventional all-air jet ventilation systems due to their advantages in thermal comfort and energy efficiency. This paper focuses on the operating performance of the radiant floor system in Terminal 3 of Xi’an Xianyang International Airport, the first airport terminal in China to adopt radiant floors for cooling. In summer, the typical cooling capacity of the radiant floor is 30–40 W/m2 with a mean chilled water temperature of 18 °C; this range increases to 110–140 W/m2 with solar radiation of 120–170 W/m2. The incremental effect of the solar radiation on the cooling capacity of radiant floor is analyzed with simple calculation methods. In winter, the radiant floor provides a heating capacity of 30–70 W/m2 with a hot water temperature of 35–40 °C, which is sufficient to satisfy the heating requirement. Compared with the jet ventilation system adopted in Terminal 2 of the same airport, indoor thermal comfort is significantly improved with the radiant floor system in Terminal 3 in both cooling and heating modes. Moreover, the novel system’s indoor air temperature distribution throughout the whole space and its utilization of high-temperature chilled water and low-temperature hot water reveal its potential for energy conservation.
On-site measured performance of a radiant floor cooling/heating system in Xi’an Xianyang International Airport
Zhao, Kang (Autor:in) / Liu, Xiao-Hua (Autor:in) / Jiang, Yi (Autor:in)
Solar Energy ; 108 ; 274-286
2014
13 Seiten, 26 Quellen
Aufsatz (Zeitschrift)
Englisch
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