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Apparatus and methods of cooling a hot fluid stream

  • US 4,270,358 A
  • Filed: 05/25/1979
  • Issued: 06/02/1981
  • Est. Priority Date: 05/25/1979
  • Status: Expired due to Term
First Claim
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1. Apparatus comprising:

  • a first heat exchanger sized to cool and/or condense a hot fluid stream passed into contact therewith by rejection of heat to a first cooling fluid up to an average predetermined temperature and flow of the first cooling fluid, with said heat exchanger having inadequate cooling capacity during peak cooling conditions,means to pass the hot fluid stream through the first heat exchanger in indirect heat exchange with the first cooling fluid,a second heat exchanger for cooling the hot fluid stream when heat rejection therefrom to the first cooling fluid alone provides inadequate cooling of the hot fluid stream in the first heat exchanger,the second heat exchanger being arranged to be in a series or parallel position with respect to the first heat exchanger,means to pass the hot fluid stream through the second heat exchanger,a hot reservoir for a secondary cooling liquid when hot,a cold reservoir for the secondary cooling liquid when cold,the capacities of the hot and cold reservoirs being adequate to hold the entire volume of secondary cooling liquid for the peak cooling conditions,a conduit from the cold reservoir to the second heat exchanger for supplying cold secondary cooling liquid in indirect heat exchange to the hot fluid stream passed through the second heat exchanger,a conduit for withdrawing hot secondary cooling liquid from the second heat exchanger and delivering it to the hot reservoir,a conduit communicating with the hot reservoir and a cooler for delivering hot secondary cooling liquid from the hot reservoir to the cooler to be cooled, anda conduit communicating with the cooler and the cold reservoir for delivering cold secondary cooling liquid from the cooler to the cold reservoir.

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