某超大型地下空间工程空气能综合应用
Comprehensive application of air energy in underground space of a super large project
摘要：
西安某地下工程总建筑面积超过70万m2，地下平均深度超过10 m，为充分利用地下空间空气能，将地下2层的通风有组织地排至空气源热泵室外机侧及冷却塔进风侧；空调新风通过敷设在地下的水平土建风道夏季预冷、冬季预热。建立了模型，计算分析地下空间空气能利用的节能潜力。工程运行实测数据与分析结果较为吻合。
Abstract：
An underground space project with a total floor area of more than 0.7 million square meters in Xi’an has an average underground depth of more than 10 meters. In order to make full use of the air energy in the underground space, the ventilation of the underground space is systematically discharged to the outdoor unit side of the air-source heat pump and the air inlet side of the cooling tower. The outdoor air of the air conditioning unit is precooled in summer and preheated in winter through the horizontal civil duct laid underground. Through the establishment and calculation of a theoretical model, analyses energy-saving and economic potential of air energy utilization in underground space. The measured data after the project operation are in good agreement with the analysis results.
Keywords:underground building complex; air energy; air source heat pump;cooling tower; civil duct; heat recovery