Boiling Condensation Htc: pool_boiling
Boiling and condensation heat transfer coefficients — pool boiling (nucleate, film, CHF), flow boiling (subcooled, saturated, annular, microchannel), and condensation (filmwise, dropwise, in-tube) correlations and data
| regime | record id | applicability notes | correlation name | fluid | geometry | heat flux kWm2 (kW/m2) | orientation | pressure kPa (kPa) | sub regime |
|---|---|---|---|---|---|---|---|---|---|
| pool_boiling | CHF_value#ethanol#flat_plate#horizontal#101kPa | CHF for ethanol at 1 atm ~ 400 kW/m2; lower latent heat and lower density ratio than water gives lower CHF | Zuber 1958 | ethanol | flat_plate | 400 | horizontal | 101.3 | CHF_value |
| pool_boiling | CHF_value#nitrogen_liquid#flat_plate#horizontal#101kPa | CHF for LN2 at 1 atm ~120-180 kW/m2; low latent heat gives low absolute CHF despite good nucleation; pool boiling curve shifts to low heat flux | Zuber / Kutateladze | nitrogen_liquid | flat_plate | 150 | horizontal | 101.3 | CHF_value |
| pool_boiling | CHF_value#r134a#flat_plate#horizontal#770kPa | CHF for R-134a at Tsat=10°C ~ 200-250 kW/m2; increases with pressure; thermophysical property dependence | Zuber-Katto | r134a | flat_plate | 220 | horizontal | 770 | CHF_value |
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