Table 2 

Correlations for boiling flow heat transfer coefficient  
Reference  Fluid composition  Description  Correlation  
Geometry  Comment  Parameter range  
Warrier et al. [27]  FC84  Small rectangular parallel channels of D_{h} = 0.75mm  Singlephase forced convection and subcooled and saturated nucleate boiling  3 < x <55% 

Kandlikar and Balasubramanian [28]  Water, refrigerants, and cryogenic fluids  Minichannels and microchannels  Flow boiling  x <0.7 ~ 0.8 
h_{sp} is calculated Equation 7 
Sun and Mishima [29]  Water, refrigerants (R11, R12, R123, R134a, R141b, R22, R404a, R407c, R410a) and CO2  Minichannel diameters from 0.21 to 6.05 mm  Flow boiling laminar flow region  Re_{L} < 2,000 and Re_{G} < 2,000  
Bertsch et al. [30]  Hydraulic diameters ranging from 0.16 to 2.92 mm  Minichannels  Flow boiling and vapor quality  0 to 1 
h_{nb} is calculated by Cooper [35]:
h_{sp} = χ_{v,x}h_{sp,go} + (1 − χ_{v,x})h_{sp,lo} (13)

Temperature  −194°C to 97°C  
Heat flux  4–1,150 kW/m^{2}  
Mass flux  20–3,000 kg/m^{2}s  
Lazarek and Black [31]  R113  Macrochannels 3.15 mm inner diameter tube  Saturated flow boiling    
Gungor and Winterton [32]  Water and refrigerants (R11, R12, R22, R113, and R114)  Horizontal and vertical flows in tubes and annuli D = 3 to 32 mm  Saturated and subcooled boiling flow  0.008 < p_{sat} < 203 bar; 12 < G < 61.518 kg/m^{2}s; 0 < x < 173%; 1 < q < 91.534 kW/m^{2} 
h_{tp} = (SS_{2} + FF_{2})h_{sp} (17) h_{sp} is calculated Equation 6 S = 1 + 3, 000Bo^{0.86} (18)

Liu and Witerton [36]  Water, refrigerants and ethylene glycol  Vertical and horizontal tubes, and annuli  Subcooled and saturated flow boiling   
h_{nb} is calculated by Cooper [35] (Equation 11)

Kew and Cornwell [33]  R141b  Single tubes of 1.39–3.69 mm inner diameter  Nucleate boiling, confined bubble boiling, convective boiling, partial dry out    
Yan and Lin [34]  R134a  28 parallel tubes 2 mm  Convective boiling  G = 50 to 200 kg/m^{2}s; q = 0.5 to 2 W/cm^{2} 
h_{l} = 4.364λ_{l}/D_{h} (27)
The best fitting values for the constants C_{m,1}, C_{m,2}, and C_{m,3} are listed in Table 3 
Chehade et al.
Chehade et al. Nanoscale Research Letters 2013 8:130 doi:10.1186/1556276X8130