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SAVE BY ABSORPTION HEAT PUMPING.

Author(s) : DAVIDSON W. F., CAMPAGNE W.

Type of article: Article

Summary

A CONVENTIONAL DISTILLATION TOWER HAS A BOTTOMS REBOILER OPERATING AT 353 K (80 DEG C), USUALLY STEAM HEATED, AND REJECTS HEAT AT 335 K (62 DEG C) TO COOLING WATER IN AN OVERHEAD CONDENSER. THE OVERHEAD VAPOUR CAN BE RAISED IN PRESSURE TO CONDENSE AT 358 K (85 DEG C) IN ORDER TO USE THE AVAILABLE HEAT IN THE REBOILER. THISCAN BE ACCOMPLISHED USING A MECHANICAL VAPOUR COMPRESSOR, AN EXPENSIVE ITEM NEEDING CONSIDERABLE MAINTENANCE, STANDBY, AND WITH POSSIBLE CONTAMINATION OF THE VAPOUR BY OIL. IF A LITHIUM-BROMIDE ABSORPTION SYSTEM IS USED INSTEAD, AND THE CONDENSING TEMPERATURE IS ALLOWED TO RISE FURTHER TO 363 K (90 DEG C), AN ECONOMICAL HEAT PUMP IS OBTAINED WITH MINIMUM MAINTENANCE PROBLEMS AND NO CONTAMINATION. D.W.H.

Details

  • Original title: SAVE BY ABSORPTION HEAT PUMPING.
  • Record ID : 1988-2040
  • Languages: English
  • Source: Hydrocarbon Processing - vol. 66 - n. 12
  • Publication date: 1987
  • Document available for consultation in the library of the IIR headquarters only.

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