Synthetic evaluation of energy-saving efficiency and air contamination by microbe in air supply system using underground pit

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The energy-saving efficiency and indoor air contamination by microbe in buildings were examined from the viewpoints of air supply method and geothermal utilization pit. The main conclusions obtained from this research are as follows.(1) With the exception of the winter season、 most of the airborne fungi concentrations have exceed the academic standard value(2)For a periodof cooling operation、 average relative humidity and appearance rate of dangerous humidity indicated very high value in the pit.(3)As a result of aerodynamic median diameters 、 distributions of aerodynamic diameter showed a different tendency by air supply methods.