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<div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Fluid under thermodynamic or mechanical conditions which force it to be a liquid</div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:P-v_plot.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/36/P-v_plot.png/300px-P-v_plot.png" decoding="async" width="300" height="171" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/36/P-v_plot.png/450px-P-v_plot.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/36/P-v_plot.png/600px-P-v_plot.png 2x" data-file-width="1036" data-file-height="589" /></a><figcaption>A <a href="/wiki/Pressure_volume_diagram" class="mw-redirect" title="Pressure volume diagram">p-v diagram</a> for liquid water. The compressed fluid region is located to the left of the blue line (the liquid-vapor phase boundary).</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:GHS-pictogram-bottle.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6a/GHS-pictogram-bottle.svg/220px-GHS-pictogram-bottle.svg.png" decoding="async" width="220" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/6a/GHS-pictogram-bottle.svg/330px-GHS-pictogram-bottle.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/6a/GHS-pictogram-bottle.svg/440px-GHS-pictogram-bottle.svg.png 2x" data-file-width="724" data-file-height="724" /></a><figcaption>The <a href="/wiki/Globally_Harmonized_System_of_Classification_and_Labeling_of_Chemicals" class="mw-redirect" title="Globally Harmonized System of Classification and Labeling of Chemicals">international</a> <a href="/wiki/GHS_hazard_pictograms" title="GHS hazard pictograms">pictogram</a> for compressed gases.</figcaption></figure> <p>A <b>compressed fluid</b> (also called a <b>compressed</b> or <b>unsaturated liquid</b>,<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> <b>subcooled fluid</b> or <b>liquid</b>) is a <a href="/wiki/Fluid" title="Fluid">fluid</a> under <a href="/wiki/Fluid_mechanics" title="Fluid mechanics">mechanical</a> or <a href="/wiki/Thermodynamics" title="Thermodynamics">thermodynamic conditions</a> that force it to be a <a href="/wiki/Liquid" title="Liquid">liquid</a>.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>At a given <a href="/wiki/Pressure" title="Pressure">pressure</a>, a fluid is a compressed fluid if it is at a <a href="/wiki/Temperature" title="Temperature">temperature</a> lower than the <a href="/wiki/Saturation_temperature" class="mw-redirect" title="Saturation temperature">saturation temperature</a>. This is the case, for example, for liquid water at <a href="/wiki/Atmospheric_pressure" title="Atmospheric pressure">atmospheric pressure</a> and <a href="/wiki/Room_temperature" title="Room temperature">room temperature</a>. In a plot that compares <a href="/wiki/Absolute_pressure" class="mw-redirect" title="Absolute pressure">pressure</a> and <a href="/wiki/Specific_volume" title="Specific volume">specific volume</a> (commonly called a <a href="/wiki/Pressure_volume_diagram" class="mw-redirect" title="Pressure volume diagram">p-v diagram</a>), compressed fluid is the state to the left of the saturation curve. </p><p>Conditions that cause a fluid to be compressed include: </p> <ul><li>Specific volume and <a href="/wiki/Enthalpy" title="Enthalpy">enthalpy</a> inferior to that of a <a href="/wiki/Saturated_liquid" class="mw-redirect" title="Saturated liquid">saturated liquid</a>;</li> <li>Temperature below the <a href="/wiki/Saturation_temperature" class="mw-redirect" title="Saturation temperature">saturation temperature</a>;</li> <li>Pressure above the <a href="/wiki/Saturation_pressure" class="mw-redirect" title="Saturation pressure">saturation pressure</a>.</li></ul> <p>The term <i>compressed liquid</i> emphasizes that the pressure is greater than the saturation pressure for the given temperature. Compressed liquid properties are relatively independent of pressure. </p> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Compressed_fluid&action=edit&section=1" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFRogersMayhew1992" class="citation book cs1">Rogers, Gordon; Mayhew, Yon (1992). <i>Engineering Thermodynamics</i> (4 ed.). Longman Scientific & Technical. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0582045665" title="Special:BookSources/0582045665"><bdi>0582045665</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Engineering+Thermodynamics&rft.edition=4&rft.pub=Longman+Scientific+%26+Technical&rft.date=1992&rft.isbn=0582045665&rft.aulast=Rogers&rft.aufirst=Gordon&rft.au=Mayhew%2C+Yon&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACompressed+fluid" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFÇengelBoles2001" class="citation book cs1">Çengel, Yunus A.; Boles, Michael A. (2001). <i>Thermodynamics: An Engineering Approach</i> (4 ed.). McGraw-Hill Education. p. 65. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0071216883" title="Special:BookSources/978-0071216883"><bdi>978-0071216883</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Thermodynamics%3A+An+Engineering+Approach&rft.pages=65&rft.edition=4&rft.pub=McGraw-Hill+Education&rft.date=2001&rft.isbn=978-0071216883&rft.aulast=%C3%87engel&rft.aufirst=Yunus+A.&rft.au=Boles%2C+Michael+A.&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACompressed+fluid" class="Z3988"></span></span> </li> </ol></div></div> <style data-mw-deduplicate="TemplateStyles:r1130092004">.mw-parser-output .portal-bar{font-size:88%;font-weight:bold;display:flex;justify-content:center;align-items:baseline}.mw-parser-output .portal-bar-bordered{padding:0 2em;background-color:#fdfdfd;border:1px solid #a2a9b1;clear:both;margin:1em auto 0}.mw-parser-output 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