• Proceedings of the KSME Conference
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• 2005.11a
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• pp.34.1-34.1
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• 2005

• Proceedings of the KSME Conference
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• 2005.11a
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• pp.34.2-34.2
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• 2005

• Proceedings of the KSME Conference
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• 2000.11b
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• pp.205-209
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• 2000

The performances of cascade-type thermoelectric modules are analysed by numerical simulations. The geometrical variations are used as design parameters.

• Transactions of the Korean Society of Mechanical Engineers
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• v.14 no.4
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• pp.960-970
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• 1990

본 연구에서는 단상 밀폐 사각형 열사이폰 루프에서 가열부는 일정 열유속으 로 가열되고 냉각부는 일정온도로 냉각될 경우에 대해 루프 경사각도, 종횡비, 작동유 체 종류 및 관 직경변화에 대한 유동 및 온도변동 특성과 이에따른 전열성능 및 안정 작동범위를 실험적으로 조사하였다.

• Journal of the KSME
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• v.50 no.3
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• pp.28-31
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• 2010

이 글에서는 제4세대(Generation-IV) 원자로시스템의 자원활용 측면에서 핵연료 주기와 관련하여 새롭게 부각되고 있는 소듐냉각고속로(SFR: Sodium-cooled Fast Reactor)의 개발 목적 및 설계 특성을 기술하고 원자로 구조관점에서 가압경수로(PWR)와 비교 설명한다.

• Transactions of the Korean Society of Mechanical Engineers
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• v.16 no.6
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• pp.1150-1155
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• 1992

The cooling characteristics of a hot steel plate by a laminar impinging water bar were investigated experimentally. The dynamic parameters investigated were nozzle height L between nozzle and the hot plate, flow rate Q, and initial cooling temperature. Because the boiling phenomena on a hot steel plate are unsteady and change discontinuously, it is difficult to analyze the cooling characteristics directly. In this study the cooling efficiency was estimated by using the temperature decay rates and expansion speed of the water cooling zone. Temperature in the water cooling zone decreased rapidly and the radius of the water cooling zone expanded nearly in proportion to square root of the cooling time. With increasing initial temperature of a hot steel plate, the cooling efficiency became descendent. The cooling curve in the case of L/D = 30 showed the largest temperature decay rate and excellent cooling performance.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.35 no.5
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• pp.503-511
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• 2011

Water spray cooling is a significant technology for cooling of materials from high-temperature up to $900^{\circ}C$. The effects of cooling water temperature on spray cooling are mainly provided for hot steel plate cooling applications in this study. The heat flux measurements are introduced by a novel experimental technique that has a function of heat flux gauge in which test block assemblies are used to measure the heat flux distribution on the surface. The spray is produced by a fullcone nozzle and experiments are performed at fixed water impact density of G and fixed nozzle-totarget spacing. The results show that effects of water temperature on forced boiling heat transfer characteristics are presented for five different water temperatures between 5 to $45^{\circ}C$. The local heat flux curves and heat transfer coefficients are also provided to a benchmark data for the actual spray cooling of hot steel plate cooling applications.

• 월간 기계설비
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• s.2
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• pp.103-106
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• 1990

• Journal of the KSME
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• v.47 no.5 s.318
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• pp.44-50
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• 2007

• Journal of the KSME
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• v.47 no.5 s.318
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• pp.51-57
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• 2007