Heating measurement and analysis in high and large space buildings of rail transit

 Taking high and large space buildings of rail transit in severe cold and cold zones as the test objects, continuously tests the supply and return water temperature and indoor temperature of the heating system based on typical days. The results show that during the actual operating, the loads of cold air infiltration, invasion and train account for more than 50% of the total operating load in a high and large space workshop with train entry and exit. In view of the technological characteristics of rail transit, considers the heat absorption load of the train entry and carries out a reasonable calculation in order to avoid oversize heating system capacity and equipment configuration. Improving the construction quality and strengthening the operation and management are the main ways to improve the heating effect and realize the energy saving. The current heating system has great energy saving potential. Suggests reducing the infiltration and invasion of cold air and adopting a reasonable heating system form and operation strategy.