{"id":29226,"date":"2020-06-30T18:23:14","date_gmt":"2020-07-01T01:23:14","guid":{"rendered":"https:\/\/www.yourbestdigs.com\/?p=29226"},"modified":"2020-07-03T17:51:05","modified_gmt":"2020-07-04T00:51:05","slug":"how-do-portable-air-conditioners-work","status":"publish","type":"post","link":"https:\/\/www.yourbestdigs.com\/how-portable-ac-units-work\/","title":{"rendered":"How Do Portable Air Conditioners Work?"},"content":{"rendered":"
W<\/span>hile it would be wonderful to live in an alternate reality where we can turn electricity into cold, we’re stuck in a world where we can only directly turn electrical energy into heat. To make a room colder we have to capture heat, then move it outdoors.<\/p>\n We do this complex job using two coils of tubing filled with heat-absorbing refrigerant, one to grab heat from room air and another to radiate the heat away. For most air conditioners the second hot coil is sitting outside where heat can be carried away easily. But to make a portable air conditioner<\/a> work as a compact and self-contained system, the radiator is still in your house, and it needs a powerful fan and a giant vent hose to move the heat outside.<\/p>\n Air conditioning basically requires four components:<\/p>\n The room air fan blows past a radiator-like coil of metal tubing\u00a0 \u2014 called an evaporator coil \u2014 to trap heat.<\/p>\n Refrigerant, usually a chemical called R410A, is a gas at temperatures above -61 degrees Fahrenheit under normal pressure, but it starts this cycle under extreme pressure to keep it liquified. After passing through an “expansion valve” (like the spray valve on a can of paint) it expands into a vapor inside the evaporator coil tube.<\/p>\n That change soaks up an impressive amount of heat. If you’ve ever held a “canned air” sprayer upside down and squirted out liquid propellant to freeze things, it’s the same principle.<\/p>\n The required heat is pulled in from the blowing room air through the metal tubing and attached fins. The cold fins also trap humidity \u2014 think of water beading up on the side of a cold glass on a humid summer afternoon.<\/p>\n <\/p>\nEvaporator and condenser coils<\/h2>\n
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The evaporator coil and refrigerant<\/h3>\n