{"id":880,"date":"2012-05-14T08:00:56","date_gmt":"2012-05-14T12:00:56","guid":{"rendered":"https:\/\/www.boehmerheating.com\/blog\/?p=880"},"modified":"2012-05-11T14:12:25","modified_gmt":"2012-05-11T18:12:25","slug":"pittsburgh-ac-question-what-are-thermostatic-expansion-valves","status":"publish","type":"post","link":"https:\/\/www.boehmerheating.com\/blog\/air-conditioning\/pittsburgh-ac-question-what-are-thermostatic-expansion-valves\/","title":{"rendered":"Pittsburgh AC Question: What Are Thermostatic Expansion Valves?"},"content":{"rendered":"

The thermostatic expansion valve, sometimes known as a TEX, TEV or TXV, is a critical piece to influence the efficiency of all air conditioning and refrigeration units, including the AC system in your Pittsburgh home<\/a>.\u00a0 A tiny sensor controlling the evaporating phase of process, the valve can have a big effect.<\/p>\n

Cool air is manufactured by a re rapid movement of a refrigerant between liquid and gaseous states.\u00a0 Compound chemicals that are able to do this at a low temperature are compressed and expanded, absorbing and releasing heat at different points along the way.\u00a0 The TEV controls the flow of the refrigerant into the evaporator coils according to the temperatures of the various ingredients.<\/p>\n

Cool Air 101<\/h3>\n

To condition air, the refrigerant, most often freon or another fast acting, low temp compound, evaporates into a gas that runs through a coil and absorbs heat.\u00a0 Passing through a compressor, the freon condenses under pressure back into a liquid again and releases the heat, becoming cool enough to chill a party.<\/p>\n

Too much freon in the evaporator tube and the pressure is not low enough to expand to gas and absorb heat, working inefficiently for no gain.\u00a0 Too little freon and the conversion is also ineffective by not reaching the density needed to condense.<\/p>\n

There are four types of valves with different benefits for different types of cooling environments.\u00a0 With its ability to adjust minutely to changing conditions, the thermal expansion valve creates the perfect mixture of pressure and freon for more complicated systems.<\/p>\n

At the Starting Gate<\/h3>\n

An interactive device, the valve senses the evaporator pressure and temperature and adjusts the flow of the refrigerant so as to maintain a given “superheat”, the differ\u00adence between the refrigerant vapor temperature and its sat\u00aduration temperature. \u00a0By controlling superheat, the TEV keeps nearly the entire evaporator surface active while not permit\u00adting liquid refrigerant to return to the compressor.<\/p>\n

Some valves operate on an electrical impulse from sensors that can measure the temperatures.\u00a0 Others are open all the time.\u00a0 The thermostatic expansion valve actually utilizes the pressure between the two sections to open or close itself, regulating flow based on the very same pressure it is designed to moderate.<\/p>\n

Like the buildings they comfort, large central air conditioning systems in Pittsburgh<\/a>\u00a0are varied and diverse.\u00a0 There are nearly as many thermostatic expansion valves as there are units to receive them.<\/p>\n

For more information about how to help your AC work effectively, give\u00a0Boehmer Heating & Cooling<\/a> a call!<\/p>\n","protected":false},"excerpt":{"rendered":"

The thermostatic expansion valve, sometimes known as a TEX, TEV or TXV, is a critical piece to influence the efficiency of all air conditioning and refrigeration units, including the AC system in your Pittsburgh home. <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[275,141,76,113,103,127],"class_list":["post-880","post","type-post","status-publish","format-standard","hentry","category-air-conditioning","tag-air-conditioning","tag-air-conditioning-maintenance","tag-jefferson-hills","tag-pittsburgh","tag-south-park","tag-westmoreland-county"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.boehmerheating.com\/blog\/wp-json\/wp\/v2\/posts\/880","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.boehmerheating.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.boehmerheating.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.boehmerheating.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.boehmerheating.com\/blog\/wp-json\/wp\/v2\/comments?post=880"}],"version-history":[{"count":3,"href":"https:\/\/www.boehmerheating.com\/blog\/wp-json\/wp\/v2\/posts\/880\/revisions"}],"predecessor-version":[{"id":883,"href":"https:\/\/www.boehmerheating.com\/blog\/wp-json\/wp\/v2\/posts\/880\/revisions\/883"}],"wp:attachment":[{"href":"https:\/\/www.boehmerheating.com\/blog\/wp-json\/wp\/v2\/media?parent=880"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.boehmerheating.com\/blog\/wp-json\/wp\/v2\/categories?post=880"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.boehmerheating.com\/blog\/wp-json\/wp\/v2\/tags?post=880"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}