ESDU 84023 considers tubular condensers in which the coolant flows in horizontal tubes across which a pure vapour flows. It gives methods@ derived empirically@ for estimating total pressure drop (in two contributions@ local pressure gradient across the tube bank as a function of quality@ that is ratio of vapour mass flow rate to total mass flow rate@ and nozzle pressure drop) and overall heat transfer (from the local shellside coefficient as a function of quality together with contributions from coolant@ tube@ and fouling). A step-by-step calculation procedure based on those methods shows how they may be used to check the adequacy of a design to meet a performance requirement@ to design a condenser to meet thermal requirements and pressure drop limitations@ to estimate the outlet conditions from a given condenser@ or to evaluate test results on a condenser to determine@ for example@ its fouling resistance.
ESDU 84023 A-1985 history
1985ESDU 84023 A-1985 Shell-and-tube exchangers: pressure drop and heat transfer in shellside downflow condensation.