Fuel consumption issue
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I have only been working for half a year, and I’ve encountered many things I don’t understand during my work. For example, I’m facing a problem with calculating fuel consumption; I’m posting this here to ask for help from all of you experts! Thank you in advance! In a hydrogen production converter, what factors are considered when calculating fuel consumption? For example, in the production of hydrogen via steam reforming using LPG as a raw material, the heat generated by burning LPG is used, on one hand, to provide the reaction heat required for the steam reforming of LPG. On the other hand, there is also the heat absorbed as the material itself – including LPG and steam – rises from temperatures above 500 degrees to 800 degrees. In addition, there are heat losses from the furnace itself. Taking all these factors into account makes the calculations quite complex. In addition, there is the issue of the absorption coefficient of the furnace tubes in the radiation section; what value should be assigned to the thermal efficiency of this radiation section? My head is huge! I’m about to collapse! I would like to ask the experts here: what aspects should I take into consideration in order to calculate a relatively reasonable fuel consumption? This post was last edited by luosf on 2008-1-19 00:08]
I think it’s possible to draw on the efficiency of other similar furnaces; theoretically, it can be calculated by oneself, but it’s quite complicated.
Regarding the calculation of heat balance, manual calculations are basically no longer used; we all employ simulation software for such calculations. Any complex thermal equilibrium can be calculated, including determining by how many degrees the temperature of a gas increases due to compression; the calculation for this process is very simple.
The design institute has this software, but in companies people still rely on manual calculations! It’s actually simple: just collect all the physical property data – the combustion heat of LPG, a value for heat loss, and a value for the thermal radiation coefficient – and then it’s easy to do the calculations, right?