An electric steam boiler equipped with a condensate recovery system, which stores the condensate generated after using steam in steam washers, steam cookers, steam irons, and steam cleaners in a condensate tank and supplies compressed air to the condensate tank so that the condensate is recovered to the boiler by the pressure of the compressed air, was studied. In the results of this study, the heat energy balance between the quantity of the heat generated by the non-metallic surface heating element and the quantity of the heat absorbed by the water was good in a range of ±5%. In addition, the heat transfer rate increased in proportion to the electric power of the surface heating element heater, the waste heat energy was normally recovered by the recovery of the condensate of the steam boiler equipped with the high compression waste heat recovery system, and the recovery rate of the waste heat exhibited 23%.

• 한규일(부경대학교 기계시스템공학과) | Kyu-il HAN (Department of Mechanical System Engineering, Pukyong National University)
• 조동현(대진대학교 컴퓨터응용기계공학과) | Dong-Hyun CHO (Department of Computer Aided Mechanical Engineering, Daejin University) Corresponding author