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Title: Method and apparatus for high-efficiency direct contact condensation

A direct contact condenser having a downward vapor flow chamber and an upward vapor flow chamber, wherein each of the vapor flow chambers includes a plurality of cooling liquid supplying pipes and a vapor-liquid contact medium disposed thereunder to facilitate contact and direct heat exchange between the vapor and cooling liquid. The contact medium includes a plurality of sheets arranged to form vertical interleaved channels or passageways for the vapor and cooling liquid streams. The upward vapor flow chamber also includes a second set of cooling liquid supplying pipes disposed beneath the vapor-liquid contact medium which operate intermittently in response to a pressure differential within the upward vapor flow chamber. The condenser further includes separate wells for collecting condensate and cooling liquid from each of the vapor flow chambers. In alternate embodiments, the condenser includes a cross-current flow chamber and an upward flow chamber, a plurality of upward flow chambers, or a single upward flow chamber. The method of use of the direct contact condenser of this invention includes passing a vapor stream sequentially through the downward and upward vapor flow chambers, where the vapor is condensed as a result of heat exchange with the cooling liquid in the contactmore » medium. The concentration of noncondensable gases in the resulting condensate-liquid mixtures can be minimized by controlling the partial pressure of the vapor, which depends in part upon the geometry of the vapor-liquid contact medium. In another aspect of this invention, the physical and chemical performance of a direct contact condenser can be predicted based on the vapor and coolant compositions, the condensation conditions. and the geometric properties of the contact medium.« less
Authors:
 [1] ;  [2] ;  [2]
  1. (Lakewood, CO)
  2. (Golden, CO)
Publication Date:
OSTI Identifier:
872394
Report Number(s):
US 5925291
DOE Contract Number:
AC36-83CH10093
Resource Type:
Patent
Research Org:
Midwest Research Institute
Country of Publication:
United States
Language:
English
Subject:
method; apparatus; high-efficiency; direct; contact; condensation; direct; contact; condenser; downward; vapor; flow; chamber; upward; vapor; flow; chamber; vapor; flow; chambers; plurality; cooling; liquid; supplying; pipes; vapor-liquid; contact; medium; disposed; thereunder; facilitate; contact; direct; heat; exchange; vapor; cooling; liquid; contact; medium; plurality; sheets; arranged; form; vertical; interleaved; channels; passageways; vapor; cooling; liquid; streams; upward; vapor; flow; chamber; set; cooling; liquid; supplying; pipes; disposed; beneath; vapor-liquid; contact; medium; operate; intermittently; response; pressure; differential; upward; vapor; flow; chamber; condenser; separate; collecting; condensate; cooling; liquid; vapor; flow; chambers; alternate; embodiments; condenser; cross-current; flow; chamber; upward; flow; chamber; plurality; upward; flow; chambers; single; upward; flow; chamber; method; direct; contact; condenser; passing; vapor; stream; sequentially; downward; upward; vapor; flow; chambers; vapor; condensed; result; heat; exchange; cooling; liquid; contact; medium; concentration; noncondensable; gases; resulting; condensate-liquid; mixtures; minimized; controlling; partial; pressure; vapor; depends; geometry; vapor-liquid; contact; medium; aspect; physical; chemical; performance; direct; contact; condenser; predicted; based; vapor; coolant; compositions; condensation; conditions; geometric; properties; contact; medium; upward flow; upward flow; upward flow; liquid mixture; medium disposed; liquid mixtures; liquid stream; cooling liquid; cooling liquid; cooling liquid; cooling liquid; cooling liquid; cooling liquid; vapor flow; vapor flow; vapor flow; vapor flow; vapor flow; vapor flow; vapor flow; direct contact; direct contact; direct contact; direct contact; heat exchange; heat exchange; pressure differential; current flow; partial pressure; vapor stream; alternate embodiment; noncondensable gases; flow chamber; flow chamber; flow chamber; flow chamber; flow chamber; flow chamber; flow chamber; flow chamber; flow chamber; flow chamber; flow chamber; liquid streams; alternate embodiments; flow chambers; flow chambers; flow chambers; flow chambers; contact condenser; contact condenser; contact condenser; noncondensable gas; direct heat /261/