타워형 태양열 발전 흡수기의 열유속에 따른 수순환 특성 연구
Water Circulation Characteristics of a Water/Steam Receiver for Solar Power Tower System at Various Heat Fluxes
1
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
This paper describes water circulation characteristics of a water/steam receiver at various heat fluxes. The water/steam receiver for a solar tower power system is a natural circulation type. Experimental conditions of water and steam were set at a pressure of 5 bar and temperature of 151.8℃. The experimental device for the water/steam receiver consisted of a steam drum, upper/lower header, riser tubes, and downcomer tube. The experiments were conducted by varying heat fluxes in terms of mass flow rate in each riser tube. However, the total mass flow rate on the riser tubes was fixed at 217.4 g/s. For the uniform heat flux, while the water temperature of the steam drum and upper header were kept at steady state, the temperature of the lower header was fluctuated. For the non-uniform heat flux, while the temperature of the steam drum was kept at steady state, the temperature difference increased in the right and left side of the upper header, and the temperature of the lower header was fluctuated.
Abstract
This paper describes water circulation characteristics of a water/steam receiver at various heat fluxes. The water/steam receiver for a solar tower power system is a natural circulation type. Experimental conditions of water and steam were set at a pressure of 5 bar and temperature of 151.8℃. The experimental device for the water/steam receiver consisted of a steam drum, upper/lower header, riser tubes, and downcomer tube. The experiments were conducted by varying heat fluxes in terms of mass flow rate in each riser tube. However, the total mass flow rate on the riser tubes was fixed at 217.4 g/s. For the uniform heat flux, while the water temperature of the steam drum and upper header were kept at steady state, the temperature of the lower header was fluctuated. For the non-uniform heat flux, while the temperature of the steam drum was kept at steady state, the temperature difference increased in the right and left side of the upper header, and the temperature of the lower header was fluctuated.
참고문헌 (8)
- 강용혁, "태양열 발전시스템의 종류 및 기술동향", 설비저널, 33(10), pp.34~44 (2004), 대한설비공학회
- W. Grasse, "PHOEBUS international 30 MWe solar tower plant", Solar Energy Materials, 24, pp.82~94 (1991)
- A.K. Nayak, "Study on the stability behavior of two-phase natural circulation systems using a four-equation drift flux model", Nuclear Engineering and Design, 237, pp.386~398 (2007)
- 김태국, "고온 고압 발전용 보일러의 수순환 밸런스 분석에 관한 연구", 대한기계학회 1997년도 추계학술대회논문집B, pp.832~837 (1997)
- M.R. Gartia, "A generalized flow correlation for two-phase natural circulation loops", Nuclear Engineering and Design, 236, pp.1800~1809 (2006)
- M. Ishii, "Scaling laws for thermal -hydraulic system under single phase and two-phase natural circulation", Nuclear Engineering and Design, 81, pp.411~425 (1984)
- G. Ribatski, "An analysis of experimental data and prediction methods for two-phase frictional pressure drop and flow boiling heat transfer in micro-scale channels", Experimental Thermal and Fluid Science, 31, pp.1~19 (2006)
- G. Hetsroni, "Heat transfer to two-phase flow in inclined tubes", International Journal of Multiphase Flow, 29, pp.173~194 (2003)