![]() One spiral is fixed, that is, stationary. Two identical spirals make up the core of a scroll compressor. The Copeland UltraTech Scroll compressor is considered by HVAC technicians to be the finest of its kind. They are typically used to replace other styles when those other compressors fail. Scroll compressors are among the most popular AC compressor types. Here is an overview of AC compressor types. They are also used in commercial ACs along with screw compressors and centrifugal compressors. Scroll, rotary and reciprocating AC compressors are the most common types used in residential air conditioners. This guide discusses the five AC compressor types. The cycle is continuous when an air conditioning cycle is in process. Inside, the refrigerant collects more heat to carry outside. It is that change in pressure that causes refrigerant to flow through the system – from high pressure in the outdoor unit to low pressure in the indoor unit. From physics, we understand that substances flow from a place of high pressure toward lower pressure. This raises the pressure of the refrigerant. Secondly, and here is the answer to the question at hand, the compressor compresses the refrigerant. It has fins to maximize surface area for fast heat transfer to outside air. The heat is transferred through the outdoor coil, which is also radiator-like. That is essential for heat to leave the refrigerant, since heat likes to balance out, flowing from hotter to cooler space. It gets so hot that the outside air, even on a hot summer day, is cooler than the refrigerant. First, as the refrigerant vapor is compressed, its temperature rises – the same amount of heat in less “space” makes it hotter. The compressor has one hugely important purpose – it compresses the high-pressure gas vapor back into a low-pressure gas. This is where our discussion gets to the topic at hand. The Condensing unit outside contains the compressor. The other line carries cooled refrigerant from the condenser unit to the indoor/evaporator coil.Ĥ). One line carries refrigerant vapor from the evaporator coil to the condensing coil outside. Refrigerant line set: The lines running between coils are often copper, but synthetic materials are used in some AC types. AC makes the air in your home cooler and drier, and dry air is more comfortable than damp air.ģ). The water runs down the slope of the A-coil, and is drained away. That chilled air is pushed into your ductwork by the blower motor, and the blower also pulls in warm air to be cooled.Īs a side note, the evaporator coil gets really cold, and moisture from the air condenses on it. As it does that, it collects surrounding heat to carry from your home – and the air in your home gets cooler. ![]() You may also like: What is an Evaporator Coil – Differences Between “A” and “Z” TypesĪs the refrigerant enters the evaporator coil, it evaporates, of course, into a low-pressure gas.There are several designs, but many are A-shaped with sloping sides. Evaporator Coil: Inside your home, in the furnace or air handler, is a radiator-like coil. The refrigerant can also be compressed from a high-pressure vapor back into a low-pressure substance – but that’s getting ahead of ourselves.Ģ). That’s water evaporating, taking away heat, and making you cooler. As refrigerant evaporates, it collects heat – just like when wet skin feels cool in the breeze. Refrigerant evaporates very easily, becoming a low-pressure gas. Refrigerant is an amazing substance – life-saving, really, since air conditioning has saved countless lives in the last century. To understand how an AC compressor works, we should start with a deeper discussion of the major components in your heat pump or AC system.ġ). It’s just as comprehensive as this AC compressor guide. For more details, see our 5000-word AC Condenser Unit Guide. It is located in the outdoor unit, which is technically called the condensing unit. The compressor is the piece of equipment that cycles refrigerant from coil to coil through the line set. Your AC or heat pump system has an indoor coil, outdoor coil and a set of lines connecting the two. But it is commonly used of any type of refrigerant, like Kleenex or Ketchup. It is the part that pumps refrigerant, aka Freon, through the system. The compressor in your air conditioner or heat pump is the “heart” of the unit. ![]() Note:In this guide, we call the outdoor unit the “condenser unit” and the “condensing unit.” The terms are interchangeable.
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