| 제목 |
건설기계 Fast Warm-up 시스템용 HF 히터의 열유동 해석 |
| 분야 |
디젤엔진 |
| 언어 |
Korean |
| 저자 |
이현석(자동차부품연구원), 허형석(자동차부품연구원), 배석정(자동차부품연구원), 홍성목(해송엔지니어링), 박승욱(해송엔지니어링), 이준용(자동차부품연구원) |
| Key Words |
HF heater(작동유 가열기), Fast warm-up system(속 웜업 시스템), Construction equipment(건설기계), Heat recovery(회수열량), Pressure drop(압력손실) |
| 초록 |
Construction equipment has a lot of work at low temperature operation, thus it consumes more fuel than automobile and emits a large amount of CO2. The oils used in construction equipment have high viscosities at low temperature and therefore lead to a large frictional loss due to viscosity. The fast warm-up system for construction equipment reduces friction losses by increasing the operating temperature of the HF(Hydraulic fluid) by rapidly warming up the HF, and ensures sufficient fluidity to improve low-temperature fuel economy. In this study, thermal flow analysis of HF heater was performed to develop EGRC HF heater in the fast warm-up system. HF heater consists of a stacked plate structure with built-in offset fins and made of aluminum material. Various models were presented and compared by changing the design parameters such as fin pitch, offset length, and so on. For the selected model, the thermal flow analysis was performed under various fluid conditions. As a result of the model analysis of the HF heater, when the fin pitch is the same, the pressure drop tends to decrease as the offset length becomes shorter. |
| 원문(PDF) |
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