Regarding the calorific value of low-pressure steam
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When I was looking up the \"Limits on Comprehensive Energy Consumption per Unit of Coke Production\" (GB21342-2008), I found in the table on the last page, which lists the standard coefficients for converting various types of energy into standard coal, that both low-pressure steam and blast furnace gas have the same calorific value and conversion coefficients. I find this coincidence strange: blast furnace gas has a value of 3763 KJ/m3 and 0.1286 Kgce/Kg; low-pressure steam also has a value of 3763 KJ/Kg and 0.1286 Kgce/Kg. I suspect there’s an issue with the calorific value of the low-pressure steam. I simply divided 3763 KJ by 4.186, and the result was that 899 Kcal of heat is required per kg of steam, which is almost equivalent to the enthalpy value of steam at 1.0 standard atmosphere and 630°C. Please help me confirm these numbers to see which ones are correct and which ones are wrong.
Blast furnace gas: 3763 KJ/m3, 0.1286 Kgce/Kg; low-pressure steam: 3763 KJ/Kg, 0.1286 Kgce/Kg. The units are different; one is KJ/m3 and the other is KJ/Kg, which is related to density. This is just my humble opinion; I hope experts can offer their corrections.