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Heat exchangers cleaning

Heat exchanger cleaning Periodic fugitive emissions (HCs.)... [Pg.104]

With heat exchangers, cleaning should be considered as an option when the efficiency has fallen off to some specific level e.g. a terminal temperature difference. With boilers, unless there has been some occurrence which may be alleviated by a particular clean, periodic cleaning to pre-empt corrosion by limiting deposit thickness should be considered... [Pg.854]

Cleaning costs vary widely, depending on the medium, method and application. Typical relative costs for contract heat-exchanger-cleaning service ... [Pg.112]

It is not possible to discuss the various methods of heat exchanger cleaning in detail, but the following gives a broad overview ... [Pg.1209]

The fouling factor has to be determined from actual heat exchanger performance based on online measurements taken from a process unit test run. Heat exchanger clean performance is obtained from process flowsheet simulation software (e.g., Hysys by Aspen Tech or Unisim by Honeywell), while dirty performance from exchanger rating software (e.g., HTRI by Heat Transfer Research Institute). [Pg.120]

Ai surface area of heat exchanger, fr A constant energy cost, /day B constant energy cost, /day/°C C( energy cost, /GJ C heat exchanger cleaning cost, ... [Pg.136]

E2 energy cost during cleaning of heat exchanger, /cleaning period ht heat transfer coefficient of tube side, BTU/(h ft °F) hs heat transfer coefficient of shell side, BTU/(h ft °F) k fluid thermal conductivity, BTU/(h ft °F)... [Pg.136]

Reactor recirculation pump seal coolers Reactor recirculation pump motor coolers Nonregenerative cleanup heat exchanger Clean sump coolers Sample coolers Drywell coolers... [Pg.122]

Frenier, W. W. Barber, S. J. "Chose the Best Heat Exchanger Cleaning Method," Chem. Eng. Prog. 1998, 94(7), 37-45. [Pg.118]

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