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3XPSVUHWXUQFRQGHQVDWHWRWKHERLOHUIHHGWDQN Ideally, condensate will run away from steam traps via gravity but where this is impossible the condensate must be lifted to a higher level. Sometimes, pumps are needed to achieve this. Depending on your unique operating environment, there are several types used, often in combination. These include: electrical condensate pumps, mechanical condensate pumps, and automatic pump traps.
Feedtank heating and deaeration In the feedtank, condensate is mixed with other feedwater to KHDWLW7KHPRVWHI¿FLHQWZD\WRKHDWDQGGHDHUDWHLVXVLQJD GHDHUDWRUKHDGZKLFKPL[HVUHWXUQHGFRQGHQVDWHÀDVKVWHDP and cold makeup water as they are fed into the feedwater tank.
While this outlines the basic process, there are other points to bear in mind.
)ODVKVWHDPFDQDOVREHUHFRYHUHG Flash steam is released from hot condensate when the pressure of that condensate drops, for example when it is being discharged IURPWKHPDLQVWHDPV\VWHP8VLQJDÀDVKVWHDPV\VWHPLVRQHRI WKHPRVWHQHUJ\HI¿FLHQWZD\VRIH[WUDFWLQJKHDWIURPFRQGHQVDWH before it goes back into the feedwater tank. 3UHVVXULVHGORZORVVFRQGHQVDWHUHFRYHU\FDQ ERRVWEHQH¿WV ,NQRZIURPH[WHQVLYHH[SHULHQFHLQWKH¿HOGWKDWKXJHVDYLQJV LQDQQXDOIXHODQGZDWHUFRVWVUDQJLQJIURP IRUDVPDOO V\VWHPWR IRUODUJHUV\VWHPVDUHSRVVLEOHDORQJZLWK VLJQL¿FDQWVDYLQJVLQFDUERQGLR[LGHHPLVVLRQV3D\EDFNWLPHVIRU such systems have been very short, sometimes less than a year.
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