Abstract
As a critical transportation infrastructure, with a high flow of people and high-energy consumption in China, coach stations have great potential in energy saving and CO2 emission reduction. In this paper, the building information and energy consumption data of 29 coach stations in five climate regions of China were obtained by field investigations. The annual total comprehensive building energy consumption was 31.37–128.08 kWh/(m2·a). The annual total CO2 emissions from building operation in the coach stations was 17.01–134.77 kgCO2/(m2·a). The heating, ventilation and air conditioning (HVAC) system was the largest energy using and CO2 emissions sector: 30.42–72.47% of the energy consumption and 30.42–83.93% of the CO2 emissions were generated by HVAC system. The energy consumption and CO2 emission level of coach stations and that of other kinds of public buildings were compared. Results showed that the energy consumption and CO2 emission levels of coach stations investigated were relatively low, mainly because the passenger thermal comfort was scarified. Based on the investigation data, energy consumption analysis models of coach stations in five regions were established by simulation when the passenger thermal comfort was met. The potentials of energy saving and CO2 emission reduction were studied from forms of the HVAC system, heat recovery and natural illumination.
Highlights
As the second-largest energy consumer and the largest CO2 emitter, China faces great challenges in energy saving and emission reduction [1,2]
CO2 emission levels of coach stations are different from other kinds of public buildings, indicating that energy saving measures and emission reduction should be studied based on the characteristics of coach stations
The simulation results of air conditioning energy consumption are higher than investigation results in coach stations of severe cold region, cold region and hot summer and warm winter region, which are in agreement with the results of thermal environment tests in summer
Summary
As the second-largest energy consumer and the largest CO2 emitter, China faces great challenges in energy saving and emission reduction [1,2]. Because of the large space, high window-to-wall ratio, large demand of fresh air, and different operation strategies, the energy consumption structure and CO2 emission levels of coach stations are different from other kinds of public buildings, indicating that energy saving measures and emission reduction should be studied based on the characteristics of coach stations. Energy saving effect under different forms of air conditioning systems, lighting power, and heat transfer coefficient of the envelope was studied by simulation, based on energy consumption data of public buildings in Tianjin [18]. According to the field investigation data, energy consumption analysis models of coach stations in five climate regions were established by simulation when the passenger thermal comfort was met, the annual energy consumption and CO2 emissions were analyzed. The potentials of energy saving and CO2 emissions reduction of coach stations were studied from forms of the HVAC system, heat recovery, and natural illumination
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