I'm in need of a specific heat exchanger (a quench cooler). It needs to cool fast (in seconds) and it needs to cool a lot (hundreds of degrees). The coolant is water (making steam). The other side of the heat exchanger is a gas which can be compared to an exhaust gas: there are particles (aerosols), water (which will condense) and permanent gases. Inlet temperature is well above water's boiling point, (>250 deg C) so no water is present in liquid form when it enters. Exit temperature is room temperature, so a lot will have condensed. the aerosols are expected to make everything dirty in no-time, so cleaning the heat exchanger should be easy. I know that often quench coolers are a type of flash vessel, that doesn't do a lot of heat exchanging. A quench tower (direct contact between coolant and gas) is also no option for me. I need to recover the heat, and keep the gas pressurized. Question: where can I find a method to select the heat exchanger? To my surprise, Perry's handbook doesn't have a "heat exchanger selection", wikipedia only describes a lot of heat exchangers... I hope somebody can point me to a proper selection method. (Can also be a book or journal article - I have access to both in abundance). A selection method would not solve the question, but would enable me to do that myself... teaching me how to fish, rather than giving me that one fish. :-) Of course, there's nothing wrong with answering the technical question here. Thanks in advance.