System and apparatus for delivering expanded refrigerant to an air/gas dryer
The present invention relates to a method and apparatus for effectively reducing/eliminating oscillation of over and under shoot of superheat and refrigerant feed in an evaporator of compressed refrigerant of a gas/air dryer system. The feed makes use of a plurality of refrigerant expansion valves,...
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creator | ARNO DAVID R CARLIN JOHN A |
description | The present invention relates to a method and apparatus for effectively reducing/eliminating oscillation of over and under shoot of superheat and refrigerant feed in an evaporator of compressed refrigerant of a gas/air dryer system. The feed makes use of a plurality of refrigerant expansion valves, sized in scaled manner, and adjusted inversely to the size of each, affording exact feed requirements to the evaporating vessel heat exchange. The system uses superheat feedback to respond rapidly or slowly to fill need for large or modest injections leading to stable, balanced operations. The operations 'level-out' to a smooth, even output of the gas/air dryer dew point temperature, relatively close to the dew point seat point without falling into an endless loop oscillation. The feed delivery of staged injection meters expanded refrigerant to demand while tracking superheat. |
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The feed makes use of a plurality of refrigerant expansion valves, sized in scaled manner, and adjusted inversely to the size of each, affording exact feed requirements to the evaporating vessel heat exchange. The system uses superheat feedback to respond rapidly or slowly to fill need for large or modest injections leading to stable, balanced operations. The operations 'level-out' to a smooth, even output of the gas/air dryer dew point temperature, relatively close to the dew point seat point without falling into an endless loop oscillation. The feed delivery of staged injection meters expanded refrigerant to demand while tracking superheat.</description><language>eng</language><subject>BLASTING ; COLD ROOMS ; COMBINED HEATING AND REFRIGERATION SYSTEMS ; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHERSUBCLASS ; HEAT PUMP SYSTEMS ; HEATING ; ICE-BOXES ; LIGHTING ; LIQUEFACTION SOLIDIFICATION OF GASES ; MANUFACTURE OR STORAGE OF ICE ; MECHANICAL ENGINEERING ; REFRIGERATION MACHINES, PLANTS OR SYSTEMS ; REFRIGERATION OR COOLING ; REFRIGERATORS ; WEAPONS</subject><creationdate>2009</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20090127&DB=EPODOC&CC=US&NR=7481073B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20090127&DB=EPODOC&CC=US&NR=7481073B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>ARNO DAVID R</creatorcontrib><creatorcontrib>CARLIN JOHN A</creatorcontrib><title>System and apparatus for delivering expanded refrigerant to an air/gas dryer</title><description>The present invention relates to a method and apparatus for effectively reducing/eliminating oscillation of over and under shoot of superheat and refrigerant feed in an evaporator of compressed refrigerant of a gas/air dryer system. The feed makes use of a plurality of refrigerant expansion valves, sized in scaled manner, and adjusted inversely to the size of each, affording exact feed requirements to the evaporating vessel heat exchange. The system uses superheat feedback to respond rapidly or slowly to fill need for large or modest injections leading to stable, balanced operations. The operations 'level-out' to a smooth, even output of the gas/air dryer dew point temperature, relatively close to the dew point seat point without falling into an endless loop oscillation. 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The feed makes use of a plurality of refrigerant expansion valves, sized in scaled manner, and adjusted inversely to the size of each, affording exact feed requirements to the evaporating vessel heat exchange. The system uses superheat feedback to respond rapidly or slowly to fill need for large or modest injections leading to stable, balanced operations. The operations 'level-out' to a smooth, even output of the gas/air dryer dew point temperature, relatively close to the dew point seat point without falling into an endless loop oscillation. The feed delivery of staged injection meters expanded refrigerant to demand while tracking superheat.</abstract><oa>free_for_read</oa></addata></record> |
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subjects | BLASTING COLD ROOMS COMBINED HEATING AND REFRIGERATION SYSTEMS COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHERSUBCLASS HEAT PUMP SYSTEMS HEATING ICE-BOXES LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING REFRIGERATORS WEAPONS |
title | System and apparatus for delivering expanded refrigerant to an air/gas dryer |
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