All air conditioner units must have the five basic components to work: We’ll be discussing the ac cycle from split-central air conditioner units perspective; to make it easier. Remember - refrigeration is a process that removes heat from an area that is not wanted and transfers that heat to an area that meaningless. Ok, let get started. In this refrigeration diagram, the four major components split into two sections: Indoor and Outdoor. In indoor units, we have the AC parts number 1 and 2. In outdoor units, we have the AC parts number 3 and 4. These four majors’ components are divided into two difference pressure: high pressure and low pressure. The high pressure side is the condenser units (outdoor) and the low pressure side is the air conditioning evaporator (indoor). The divided point between high and low pressure cut through the compressor and the expansion valve. Let start with AC parts # 1, Air conditioner evaporator. The air conditioning evaporator is a heat exchanger that absorbs heat into the central air conditioner.

The evaporator does not exactly absorb heat! It’s the cooled refrigerant fed from the bottom of the evaporator coils absorb the heat. The liquid refrigerant usually flows from the bottom of the evaporator coils and boils as it moves to the top of the evaporator coils. The reason it’s fed from the bottom is to ensure the liquid refrigerant boils before it leave the evaporator coils. If a refrigerant was too fed from the top, the liquid refrigerant would easily drop to the bottom of the coils before it absorbs enough heat and boil. If evaporator was to feed liquid refrigerant into air conditioner compressor; it will shorts the air conditioner compressor life. Compressor does not pump liquid. This how air conditioning evaporator boils liquid refrigerant to vapor. The air conditioner evaporator has three important tasks: Air conditioner parts # 2, Air conditioner compressors. The air conditioning compressor is known as the heart of the central air conditioning units.

It’s one of the divided points between high and low side. As we can see in the refrigeration cycle diagram; the compressor has a refrigerant inlet line and refrigerant outlet line. The compressor inlet lines are known as: The compressor outlet lines are known as: The compressor absorbs vapor refrigerant from the suction line and compresses that heat to high superheat vapor. As the refrigerant flows across the compressor, it also removes heat of compression, motor winding heat, mechanical friction, and other heat absorbs in the suction line. The air conditioner compressor produce the pressure different, it’s the compressors that cause the refrigerant to flow in a cycle. Air conditioner parts # 3, Air conditioner condenser . In this refrigeration cycle diagram, the air conditioner condenser is air cooled condenser. It functions the same way as the evaporator but it does the opposite. The condenser units are located outdoor with the compressor.

It purposes is to reject both sensible and latent heat of vapor absorb by the air conditioner units.how much is car ac repair The condenser receives high pressure and high temperature superheats vapor from the compressor and rejects that heat to the low temperature air. cost of home ac unitAfter rejected all the vapor heat, it turns back to liquid refrigerant.my ac unit has no power The condenser has three important steps: Air conditioner parts # 4, Air conditioner expansion valve or Thermostatic Expansion Valve (TXV’s) (TEV’s). All expansion device or metering device has similar function (to some extent); it’s responsible for providing the correct amount of refrigerant to the evaporator. This is done by creating a restriction within the thermostatic expansion valve.

The restriction causes the pressure and temperature of the refrigerant entering the Evaporator to reduce. The refrigeration cycle diagram above has a thermostatic expansion valve. This expansion device has Thermostatic expansion valve has other components besides these three. However, they are not important right now. How does TXV provides the correct amount of refrigerant? TXV provides the correct amount of refrigerant to the evaporator by using a remote sensing bulb as a regulator. The remote sensing bulb and capillary tube has a refrigerant inside. As we can see in the refrigeration cycle diagram above, the remote sensing bulb is tie with the suction line. The temperature from the suction line transfer heat to the sensing bulb through conduction. Sensing bulb responds to the temperature of the suction line and as a result, it decreases or increases the temperature and pressure inside the sensing bulb due to suction line temperatures. The sensing bulb also has a diaphragm on the other end.

This diaphragm is with the TXV body. The diaphragm is the device that pushes or releases the needle from the valve seat. There is so much to it, but I hope this explains how expansion device work. Remember* Refrigeration cycle diagram will always have the same basic components (compressor, condenser, expansion device, evaporator, and refrigerant tube. Back to Central Air Conditioner and Refrigeration Duo Therm Air Conditioner Parts such as: See Diagrams and Parts Breakdowns of Coleman, Carrier, and Duo-Therm Air If you would prefer to order over the phone, you should have the following information about your RV AC in hand when you call.We stock common DuoTherm, Coleman, and Carrier items for immediate shipment. Click here to return to the main Duo Therm, Coleman and Carrier Air Conditioners  page. Single-Packaged Products with Energy-Saving Features and Puron® refrigerant.Up to 13.5 SEERFactory-Installed TXVECM Motor-StandardLow Sound LevelsFEATURES / BENEFITSOne-piece cooling unit with optional electric heater, low sound levels, easy installation, low maintenance, and dependable performance.

Puron Environmentally Sound Refrigerant is Carrier’s unique refrigerant designed to help protect the environment. Puron is an HFC refrigerant which does not contain chlorine that can harm the ozone layer. Puron refrigerant is in service in millions of systems, proving highly reliable, environmentally sound performance.Easy Installation Factory-assembled package is a compact, fully self-contained, electric cooling unit that is prewired, pre-piped, and pre-charged for minimum installation expense. These units are available in a variety of standard cooling sizes with voltage options to meet residential and light commercial requirements. Units are lightweight and install easily on a rooftop or at ground level. The high tech composite base eliminates rust problems associated with ground level applications.Innovative Unit Base DesignOn the inside a high-tech composite material will not rust and incorporates a sloped drain pan which improves drainage and helps inhibit mold, algae and bacterial growth.

On the outside metal baserails provide added stability as well as easier handling and rigging.Convertible duct configurationUnit is designed for use in either downflow or horizontal applications. Each unit is converted from horizontal to downflow and includes horizontal duct covers. Downflow operation is provided in the field to allow vertical ductwork connections. The basepan seals on the bottom openings to ensure a positive seal in the vertical airflow mode.Efficient operation High-efficiency design offers SEER (Seasonal Energy Efficiency Ratios) of up to 13.5.Durable, dependable components Scroll Compressors are designed for high efficiency. Each compressor is hermetically sealed against contamination to help promote longer life and dependable operation. Each compressor also has vibration isolation to provide quieter operation. All compressors have internal high pressure and overcurrent protection.ECM Motor is standard on all 50ES-A models.Direct-drive PSC (Permanent Split Capacitor) condenser-fan motors are designed to help reduce energy consumption and provide for cooing operation down to 40ºF (4.4ºC) outdoor temperature.

Motormaster® II low ambient kit is available as a field-installed accessory.Thermostatic Expansion Valve - A hard shutoff, balance port TXV maintains a constant superheat at the evaporator exit (cooling cycle) resulting in higher overall system efficiency.Refrigerant system is designed to provide dependability. Liquid filter driers are used to promote clean, unrestricted operation. Each unit leaves the factory with a full refrigerant charge. Refrigerant service connections make checking operating pressures easier.High and Low Pressure Switches provide added reliability for the compressor.Indoor and Outdoor coils are computer-designed for optimum heat transfer and efficiency. The indoor coil is fabricated from copper tube and aluminum fins and is located inside the unit for protection against damage. The outdoor coil is internally mounted on the top tier of the unit.Low sound ratings ensure a quiet indoor and outdoor environment with sound ratings as low as 75dBA.Easy to service cabinets provide easy 3-panel accessibility to serviceable components during maintenance and installation.

The basepan with integrated drain pan provides easy ground level installation with a mounting pad. A nesting feature ensures a positive basepan to roof curb seal when the unit is roof mounted. A convenient 3/4-in. (19.1 mm) wide perimeter flange makes frame mounting on a rooftop easy.Standard horizontal metal duct covers with insulation come with the unit and cover the horizontal duct openings. These can be left in place if the units are converted to downflow.Cabinets are constructed of heavyduty, phosphated, zinc-coated prepainted steel capable of with standing 500 hours in salt spray. Interior surfaces of the evaporator/heat exchanger compartment are insulated with cleanable semi-rigid insulation board, which keeps the conditioned air from being affected by the outdoor ambient temperature and provides improved indoor air quality. (Conforms to American Society of Heating, Refrigeration and Air Conditioning Engineers No. 62P.) The sloped drain pan minimizes standing water in the drain.