| Title |
Numerical Analysis of the Melting Process of Ice Using Plate Heaters with Constant Heat Flux |
| Authors |
김학구(Hark-Koo Kim) ; 정시영(Siyoung Jeong) ; 허남건(Nahmkeon Hur) ; 임태원(Taewon Lim) ; 박용선(Yong-Sun Park) |
| Keywords |
연료전지 자동차 ; 냉시동 ; 융해 ; 엔탈피 방법 ; 상변화 Fuel cell vehicle ; Cold start ; Melting ; Enthalpy method ; Phase change |
| Abstract |
One of the cold start problems of a FCV is the freezing of the water in the water tank when a FCV is not in operation and the surrounding temperature drops below 0℃. The ice in the tank should be melted as quickly as possible for a satisfactory operation of fuel cell vehicles. In this study, the melting process for the constant heat fluxes of the plate heaters was numerically calculated in the 2-D model of the tank and plate heaters. The enthalpy method and FVM code was used for this analysis. The changes of the temperature with heat fluxes and the heat transfer area could be investigated. The energy balance error was found to increase with the heat flux. From this numerical analysis, the proper heat flux value and some important design factors relating local overheating and pressurization of the water tank could be examined. |