Journal National Heritage ISSN:3022-9200(Print) 3022-9383(Online) 저널 국가유산

This research analyzed the operational characteristics in response to fire in inaccessible cultural properties. When 10 fire hoses were connected to the fire pump, the ratio of discharge pressure to tip nozzle radiation pressure decreased to 63.2% to 54% for 65A and 33.3% to 22.0% for 40A, and the smaller the diameter of the hose, the greater the pressure loss due to friction inside the hose. For the stable operation of the fire pump, it is necessary to maintain the durability of the fire pump by setting the rotational speed section between 2,000 and 3,500. If the pressure of the fire pump doubles based on 5kg/cm², the rotational speed increases 2.1 times, if it increases three times, the rotational speed increases 3.2 times, and if it increases four times, the rotational speed increases 4.1 times. In addition, in the case of axial power, if the pressure of the pump doubles based on 5kg/cm2, the axial power increases 3.0 times, if it increases 3 times, the axial power increases 5.8 times, and if it increases 4 times, the axial power increases 8.4 times.