| Title |
Studies on Performance of CO2 Water Heater by Numerical Modeling |
| Authors |
박한빛(Han Vit Park) ; 윤린(Rin Yun) |
| DOI |
http://dx.doi.org/10.6110/KJACR.2013.25.1.020 |
| Keywords |
이산화탄소 급탕기 ; 수치적 모델링 ; 가스쿨러 ; 내부 열교환기 ; 전자팽창 밸브 CO2 water heater ; Numerical modeling ; Gas cooler ; IHX ; EEV |
| Abstract |
Numerical modeling of CO2 water heater was conducted prior to optimal design of medium and large sized CO2 water heater, and the experimental test with small sized CO2 water heater having heat capacity of 4 kW was completed to verify the present numerical model. The present model estimated the experimental data of COP(coefficient of performance), heating capacity, and the hot water outlet temperature within the range of 3% to 8% of mean deviation. As increase of EEV(electric expansion valve) opening area, decreasing of heating capacity and the hot water outlet temperature, and increasing of COP were found in both experimental and numerical investigation. |