Choking Flow:<\/strong> When liquid refrigerant flows through a capillary tube, which is a type of expansion valve, a portion of the liquid refrigerant turns into vapor. As the capillary tube extends infinitely, the amount of vapor generation increases, leading to an increase in velocity until it reaches the speed of sound. This phenomenon is called choking flow. In the supersonic choking flow, the flow rate no longer increases but maintains a constant flow. When the capillary tube reaches supersonic choking flow, system operation stabilizes.<\/p>\n\n\n\nToday we learned about expansion valves. Although the expansion valves listed above are all assumed to sense temperature or pressure mechanically, there are also electronic expansion valves that use sensors and electronic control devices to detect accurate temperature and pressure and control the refrigerant flow rate. Rather, most automobile cooling systems or air conditioning systems have electronic expansion valves installed.<\/p>\n\n\n\n
After all, expansion valves play a vital role within the system and must be installed and maintained properly. Improper operation of the expansion valve can reduce the efficiency of the cooling system and lead to system failure. Therefore, it is important to maintain it carefully and adjust it appropriately to optimize system performance.<\/p>\n","protected":false},"excerpt":{"rendered":"
Today, while reviewing the installation of a low-temperature warehouse at work, I delved into researching various types of expansion valves to determine the most suitable option. I sought to understand the functionality and operating principles behind these valves, as well as explore the different types and their distinct characteristics. 1. Function of Expansion Valves The … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":51,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/engineersecret.com\/wp-content\/uploads\/2024\/01\/expansion-valveInternal-equalization-type.png","_links":{"self":[{"href":"https:\/\/engineersecret.com\/wp-json\/wp\/v2\/posts\/48"}],"collection":[{"href":"https:\/\/engineersecret.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/engineersecret.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/engineersecret.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/engineersecret.com\/wp-json\/wp\/v2\/comments?post=48"}],"version-history":[{"count":4,"href":"https:\/\/engineersecret.com\/wp-json\/wp\/v2\/posts\/48\/revisions"}],"predecessor-version":[{"id":54,"href":"https:\/\/engineersecret.com\/wp-json\/wp\/v2\/posts\/48\/revisions\/54"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/engineersecret.com\/wp-json\/wp\/v2\/media\/51"}],"wp:attachment":[{"href":"https:\/\/engineersecret.com\/wp-json\/wp\/v2\/media?parent=48"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/engineersecret.com\/wp-json\/wp\/v2\/categories?post=48"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/engineersecret.com\/wp-json\/wp\/v2\/tags?post=48"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}