Experimental study on saturated flow boiling heat transfer of R290/R152a binary mixtures in a horizontal tube
Received date: 20 Apr 2010
Accepted date: 25 May 2010
Published date: 05 Dec 2010
Copyright
An experimental study on the saturated flow boiling heat transfer for a binary mixture of R290/R152a at various compositions is conducted at pressures ranging from 0.2 to 0.4 MPa. The heat transfer coefficients are experimentally measured over mass fluxes ranging from 74.1 to 146.5 kg/(m2·s) and heat fluxes ranging from 13.1 to 65.5 kW/m2. The influences of different parameters such as quality, saturation pressure, heat flux, and mass flux on the local heat transfer coefficient are discussed. Existing correlations are analyzed. The Gungor-Winterton correlation shows the best fit among experimental data for the two pure refrigerants. A modified correlation for the binary mixture is proposed based on the authors’ previous work on pool boiling heat transfer and the database obtained from this study. The result shows that the total mean deviation is 10.41% for R290/R152a mixtures, with 97.6% of the predictions falling within±30%.
Key words: flow boiling; heat transfer; binary mixture; R290/R152a
Xin ZOU , Maoqiong GONG , Gaofei CHEN , Zhaohu SUN , Jianfeng WU . Experimental study on saturated flow boiling heat transfer of R290/R152a binary mixtures in a horizontal tube[J]. Frontiers in Energy, 2010 , 4(4) : 527 -534 . DOI: 10.1007/s11708-010-0109-7
Cp | specific heat/(J·kg-1·K-1) |
dh | hydraulic diameter/m |
E | enhancement factor |
G | mass flux/(kg·m-2·s-1) |
h | heat transfer coefficient/(kW·m-2·K-1) |
Hlv | latent heat/(J·kg-1) |
k | thermal conductivity/(W·m-1·K-1) |
L | length of channel/m |
M/(g·mol-1) | molecular weight |
m | mass flow rate/(kg · s-1) |
p | pressure/Pa |
pr | reduced pressure |
Pr | Prandtl number |
q | heat flux/(kW·m-2) |
Q | heat input/W |
Re | Reynolds number |
S | suppression factor |
T | temperature/K |
Tb | bubble point temperature/K |
Td | dew point temperature/K |
ΔTid | ideal temperature difference/K |
ΔTdb | boiling range, defined as the temperature difference between dew point and bubble point/K |
X | vapor quality |
x | liquid mole fraction of more volatile component |
xM | liquid composition based on mass of more volatile component |
y | vapor mole fraction of more volatile component |
μ | viscosity/(Pa·s) |
ρ | density/(kg·m-3) |
σ | surface tension/(N·m-1) |
1 | the more volatile component |
2 | the less volatile component |
ave | average |
exp | experiment |
i | ideal |
in | inlet |
l | liquid |
m | mixture |
nb | nucleate boiling |
pre | predict |
sat | saturation |
sp | single-phase |
tp | two-phase |
v | vapor |
w | wall |
1 |
Park Y, Kang J, Choi J, Yoo J K, Kim H. Vapor-liquid equilibria for the 1,1-difluoroethane (HFC-152a) + propane (R-290) system. Journal of Chemical and Engineering Data, 2007, 52(4): 1203-1208
|
2 |
Jung D S, McLinden M, Radermacher R, Didion D. A study of flow boiling heat transfer with refrigerant mixtures. International Journal of Heat and Mass Transfer, 1989, 32(9): 1751-1764
|
3 |
Taylor B N, Kuyatt C E. Guidelines for Evaluating and Expressing the Uncertainty of NIST Measurement Results. NIST Technical Note 1297, 1994 Edition, 1994
|
4 |
Zou X, Gong M Q, Chen G F, Sun Z H, Zhang Y, Wu J F. Experimental study on saturated flow boiling heat transfer of R170/R290 mixtures in a horizontal tube. International Journal of Refrigeration, 2009, 32(2): 371-380
|
5 |
Gungor K E, Winterton R H S. A general correlation for flow boiling in tubes and annuli. International Journal of Heat and Mass Transfer, 1986, 29(3): 351-358
|
6 |
Liu Z, Winterton R H S. A general correlation for saturated and subcooled flow boiling in tubes and annuli, based on a nucleate pool boiling equation. International Journal of Heat and Mass Transfer, 1991, 34(11): 2759-2766
|
7 |
Shah M M. Chart correlation for saturated boiling heat transfer: equations and further studies. ASHRAE Transactions, 1982, 88(1): 185-196
|
8 |
Kandlikar S G. An improved correlation for predicting two-phase flow boiling heat transfer coefficient in horizontal and vertical tubes. In: Kitto J B J, ed. 21th ASME/AIChE national heat transfer conference. ASME, Seattle, 1983
|
9 |
Kew P A, Comwell K. Correlations for the prediction of boiling heat transfer in small diameter channels. Applied Thermal Engineering, 1997, 17(8-10): 705-715
|
10 |
Copper M G. Saturation nucleate pool boiling: a simple correlation. In: 1st UK Natl. Heat Transfer Conf (I Chem E Symp series No. 86). 1984, 2: 785-793
|
11 |
Sun Z H, Gong M Q, Li Z J, Wu J F. Nucleate pool boiling heat transfer coefficients of pure HFC134a, HC290, HC600a and their binary and ternary mixtures. International Journal of Heat and Mass Transfer, 2007, 50(1,2): 94-104
|
12 |
Jung D S, McLinden M, Radermacher R, Didion D. Horizontal flow boiling heat transfer experiments with a mixture of R22/R114. International Journal of Heat and Mass Transfer, 1989, 32(1): 131-145
|
13 |
Niederkrüger M, Steiner D, Schlünder E U. Horizontal flow boiling experiments of saturated pure components and mixture of R846/R12 at high pressures. International Journal of Refrigeration, 1992, 15(1): 48-58
|
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