RT Journal Article
ID 611e01355955e767
A1 Das, Mihir Kumar
A1 Gupta, Satish C.
A1 Agarwal, V. K.
T1 Dimensionless Local and Average Boiling Heat Transfer Correlation for Saturated Liquids
JF Heat Transfer Research
JO HTR
YR 2010
FD 2010-11-22
VO 41
IS 5
SP 531
OP 558
K1 pool boiling
K1 local heat transfer coefficient
K1 distilled water
K1 methanol
K1 isopropanol
K1 sub-atmospheric pressure
K1 dimensionless correlation
AB The present study is an experimental investigation on nucleate pool boiling of saturated liquids namely, distilled water, methanol, and iso-propanol over a plain copper heating tube at atmospheric and sub-atmospheric pressures. The study includes the effect of operating parameters, i.e., heat flux and pressure on the boiling heat transfer coefficient of saturated liquids on a copper heating tube. The boiling heat transfer coefficient is determined locally at the bottom, two sides and at the top position of the heating tube and a dimensionless equation of the form h*ψ/h*ψ,1= [(a+b cos ψ)/ (a+b cos ψ)1](ρ/ρ1)0.32 is established for prediction of the local boiling heat transfer coefficient at different pressures. Further, a dimensional equation, h = Cq0.7ρ0.32 , is established for determination of the average boiling heat transfer coefficient of saturated liquids on a plain copper heating tube. The dimensionless correlations of earlier investigators are tested with experimental data of the present investigation for the sake of comparison. Further, a dimensionless correlation of the form: Nu*B = Csf(Pe*B)0.7(Kp)0.7(Pr)−0.67 is proposed. The correlation is found to fit experimental data of the present investigation within a maximum error of ±6.
PB Begell House
LK https://www.dl.begellhouse.com/journals/46784ef93dddff27,78eab4421dedde24,611e01355955e767.html