지역난방 공동주택 2차측 난방순환펌프의 말단동 변속제어에 대한 실증 연구

Recently, due to the construction of the metropolitan area and spread of new towns, application of district heating system has been increased. Since installation of facility for secondary user is usually being performed by construction companies or contractors, the systematic and efficient operation of user facility has not yet been set up. In this study, therefore, the effect of the speed control of the inverter on the heating and energy saving was investigated by using existing facilities. A variable speed control using differential pressure at the farthest building of heating system was applied to experimental field. From the experimental results, it was concluded that by using the variable speed control with smaller △p setting(0.6bar), the power consumption was drastically reduced by up to 73%. Therefore, the variable speed control using the differential pressure at the farthest building is recommendable, and a heating by variable speed control using the required appropriate minimum differential pressure was available.