Equivalent Evaporation
'From-and-at 100 °C' evaporation - the canonical boiler capacity rating. m_eq = m·(h_g − h_fw)/2257.
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Formula, assumptions, and limits
| Symbol | Meaning | Unit |
|---|---|---|
| Actual steam produced | kg/h | |
| Enthalpy at outlet | kJ/kg | |
| Feedwater enthalpy entering boiler | kJ/kg | |
| h_fg at 100 °C | kJ/kg |
Source: ASME PTC 4 - Fired Steam Generators
In short
'From-and-at 100 \u00b0C' evaporation - the canonical boiler capacity rating.