Condenser and reboiler pressures in dstwu
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In the pressure settings for the condenser and reboiler in dstwu, is gauge pressure or absolute pressure used?
It depends on the unit you choose; the one with a “g” indicates gauge pressure, right?
The problem is that there’s also this kpa, and I’m not quite sure what it means.
I’ve seen it said that the software defaults to absolute pressure, while the presence of ‘g’ indicates gauge pressure
Without a ‘g’, it refers to absolute pressure; with a ‘g’, it refers to gauge pressure. kPa denotes absolute pressure, while kPa-g denotes gauge pressure
OP, do these two pressures need to be calculated by oneself or are they derived from production experience? I don’t know how to set these two pressures :(
I don’t know either how to set these two pressures to the right levels. Isn’t it determined by the conditions of the equipment and by trial and error regarding operating costs? Otherwise, how could it be called design?