Feb 14, 2017 · 9 Superheater Normally superheating takes place in three or four stages in a big boiler. This calculation example is based on three stage superheating. The heat load of the first superheater stage is ( )hhm SHISHSHI ′′−= 2, &φ (3) where 2,SHIh is the specific enthalpy of steam after the first superheater stage.

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Get A QuoteTotal Heat of Steam = Sensible Heat + Latent Heat of Vaporisation Specific Enthalpy : Steam = Water + Evaporation Thus the Total Heat of Steam (Specific Enthalpy - Steam) is 2,676 kJ/kg (1151 Btu/lb) This data is found in Steam Tables. Steam.

Get A QuoteIn the second superheater stage the heat load added can be calculated as: φSHII = m& SHII (hSHII, 2 − hSHII,1 ) (4) where m& SHII is the mass flow of steam before the second superheater [kg/s], hSHII, 2 the specific enthalpy of steam after the second superheater stage [kJ/kg], and hSHII,1 the specific enthalpy of steam before the second superheater stage.

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Get A QuoteCalculate the heat energy supplied by the superheaters. The answer is supposed to be 405.51 J. The Properties of Steam are: At 25 bar and 370 °C: h = 3171.8 k J / k g. h f = 962.11 k J / k g, h f g = 1841.01 k J / k g. h = h f + x h f g. h = 962.11 + 0.98 ∗ 1841.01 = 4070.474 k J / k g.

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Get A QuoteAug 13, 2018 · The Contents of Boiler operation engineering questions and answers. 1. Boilers introduction 2. High Pressure Boilers 3. Boiler Auxiliaries 4. Boiler Mountings and Accessories 5. Boiler Operation Inspection and Maintenance 6. Boiler Calculations 7. Draught 8. Primary Fuels 9. Principles of Combustion 10. The Chemistry of Combustion 11. Coal Pulverization 12. Pulverized Coal Fired Furnaces 13. Upgrading PC-Fired Boilers …

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