An experimental study of the heat transfer performance of a rectangular two-phase natural circulation loop

Journal Article · Mon Jan 01 00:00:00 EST 1990 · Experimental Heat Transfer; (USA)

DOI:https://doi.org/10.1080/08916159008946376· OSTI ID:6813700

Chen, K S; Chen, Y Y; Tsai, S T ^[1]

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1. Dept. of Mechanical Engineering, National Sun Yat-Sen Univ., Kaohsiung (TW)

An experimental study is presented for the heat transfer performance of a rectangular, two-phase, natural-circulation loop with water-steam as the working fluid. Local temperature measurements of the core fluid and the wall were made, and the overall heat transfer coefficients of the evaporator, the condenser, and the loop system were obtained and correlated in terms of the fluid properties, heat flux conditions, and the liquid charge level. An overheat phenomenon at very low charge level was also observed. Result of a preliminary analysis shows that if the liquid charge level is below the fractional volume of the connecting tube between the condenser and the evaporator, an overheat phenomenon will occur.

• OSTI ID: 6813700
• Journal Information: Experimental Heat Transfer; (USA), Vol. 3:1; ISSN 0891-6152
• Country of Publication: United States
• Language: English

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