Application of the Critical Heat Flux Look-Up Table to Large Diameter Tubes

Table 4

Effect of high heat flux and tube blockage on CHF occurrence.

Parameter	Base case	High heat flux case	80% tube blockage	90% tube blockage
Heat flux (kW·m^−2)	100	400	100	100
Pressure (kPa)	6,000	6,000	6,000	6,000
Heated length (m)	15	15	15	15
Inlet quality to vertical tube (—)	0	0	0	0
Mass flux (kg·m^−2·s^−1)	1,000	1,000	200	100
Tube exit quality (—)	0.057	0.228	0.285	0.570
Critical heat flux (kW·m^−2)	729	714	173	58.8