R12 and r134a compressor danfoss

Types of R12 and R134A Compressor Danfoss

• Manlit A/C Compressor:

  An Manelit compressor functions similarly to a typical domestic fridge compressor. It is a small, rectangular box that is usually mounted vertically on sliding rails on the back of the fridge. An electric current causes the compressor coils to heat up and cool down, which compresses the refrigerant gas, moving it through the pipes and inside the fridge. The role of the fridge compressor is to remove heat from within the fridge to keep it cold and preserve food.

• MCP A/C Compressor:

  An MCP compressor also works like a household fridge compressor but is smaller in size. It is usually mounted horizontally at the bottom of the fridge. It gives off some heat while operating, so it is usually insulated to prevent heat loss. Some MCPs use oil to lubricate the pipes, but many are self-lubricated. MCP compressors can sometimes be plugged into an ordinary electrical socket.

• MCPK A/C Compressor:

  A MCPK compressor works much like an MCP compressor but comes in a more robust design with an additional start relay. The start relay assists the motor in starting smoothly and quickly. Power and capacity are increased in the MCPK model to enable efficient operation in larger-scale commercial models and high-temperature areas with greater demands. Storage capacity is also increased compared to a typical MCP compressor.

• The KPC Compressor:

  A KPC compressor is a scroll type with a compact design, higher efficiency, and lower noise and vibration level. It is suitable for medium and high-temperature applications and premature failures of refrigeration systems. It is also suitable for commercial refrigeration and cold storage solutions.

• NH3 Compressor:

  A NH3 compressor is a sem-hermetic screw compressor. This compressor uses the screw principle to refrigerate. This means that ammonia (NH3) works as a refrigerant, getting rid of heat in the process. The compressor contains a gas inlet and outlet, rotor pairs, lubricant injection, and a motor to drive the rotors. NH3 compressors are suitable for industrial refrigeration applications such as large-scale cooling facilities, food processing industries, cold storage warehousese, and ice rinks.

Specifications and maintenance of R12 and R134A compressor Danfoss

Specifications

• Product code: The product's code specifies different features and specifications, such as SDF5-22Y1, SDF6-27Y1, SDF6-32Y1, SDF8-42Y1, and SDF8-49Y1.
• Type and category: The Danfoss compressor categories are fixed-speed compressors, which are hyperbolic motor-driven machines. Refrigerants suitable for R12 and R134A compressors include R12, R22, R134A, and R407C.
• Suction and discharge: The suction and discharge ports are located in different parts based on the models and are identified with the letters S and D.
• Mounting pads: The mounting pads of the Danfoss compressor include four fixed cushions, and the arrangement may vary depending on the models.

Maintenance

• Operating requirements: The R12 compressor Danfoss is suitable for refrigerants such as R12, R22, R134A, and R407C. On the other hand, R134A compressors are only suitable for R134A refrigerants. It is important to notice that using other refrigerants may result in damage to the compressor.
• Temperature and humidity: It is suggested that people use the Danfoss compressor under environmental conditions with ambient temperatures of 10°C to 43°C and relative humidity of 0 to 100%, non-condensing. When working, the inner space of the machine should be preserved, and the humidity should be between 50 to 75% to avoid any condensation on electrical components.
• Pest control: The insect-caught accidents may cause compressors short-circuited or burned, resulting in functional failure. To prevent this, users need to make sure there is no entry for insects in the Danfoss compressor. At the same time, the compressor operating electricity box should be examined to ensure that there is no insect entry.
• Clean up: Dust on the outer surface of the Danfoss compressor can be wiped off with a slightly moist cloth to keep it clean. It's better for people not to use strong detergents or soak the compressor in water to prevent internal damage.
• Air circulation: Good heat dissipation of the Danfoss compressor is also significant because it influences the operation performance of the machine. It is vital to ensure sufficient air circulation around the compressor to dissipate heat.

Application scenarios of R12 and R134a compressors

• Automotive air conditioning:

  The Danfoss R134a car AC compressor is designed precisely for this application. This compressor is directly mounted to the engine with a connecting belt. While the car is moving, both the engine and the AC compressor will be in motion, thus compressing and circulating the refrigerant to cool the air that will be released inside the car.

• House HVAC systems:

  Similar to how automotive AC systems work, home HVAC units utilize an AC compressor to maintain a refrigerant's pressure and movement. The specific task of an HVAC compressor is to pump the refrigerant vapor from the indoor coils to the outdoor coils. By doing this, the indoor coils are able to extract heat from the indoor air, and the outdoor coils are able to release that heat to the outside environment, thus cooling the house.

• Walk-in coolers:

  Compressors are also widely used in walk-in cooler systems. Much like HVAC systems, a compressor in a walk-in cooler system will also be used to maintain the refrigerant's pressure and movement to execute the refrigeration cycle properly and cool the air inside the walk-in cooler.

How to choose R12 and R134A compressor Danfoss

Using the following tips can help select the proper refrigerant compressor for any application.

• System Matching

  The compressor must match the entire refrigeration system. Consider the evaporator, condenser, expansion device, and how each part works with the compressor. Make sure the compressor matches the system's capacity.

• Application Suitability

  Choose a compressor suited for the specific refrigeration job. For example, use a hermetic compressor for a commercial fridge and a semi-hermetic one for industrial tasks where the compressor may need servicing later.

• Operating Conditions

  Pick a compressor that can handle the temperature and pressure ranges it will face during normal operation. Avoid choosing a compressor that only just meets these operating conditions, as this could lead to premature failure.

• Energy Efficiency

  Opt for a compressor that balances initial costs with long-term energy efficiency. Consider models with electronic controls or variable speed drives, as they may cost more at first but save money over time through reduced electricity use.

Q&A

Q1: What is the difference between R12 and R134a refrigerants?

A1: R12 is a chlorofluorocarbon(CFC) widely used in the 20th century but was phased due to environmental impact on ozone depletion. R134a is a hydrofluorocarbon(HFC) substitute for R12 that does not harm the ozone layer, making it a more environmentally friendly choice.

Q2: Can R134a compressed retrofit an R12 system?

A2: Yes, R134a can retrofit an R12 compressor system, but it's essential to perform proper retrofitting and lubrication. The R12 compressor Danfoss may also be required to change the oils and possibly the seals and may be allowed to leak more than a traditional HFC refrigerant would.

Q3: How long does an AC compressor last?

A3: An air-conditioning compressor can last around 12 to 15 years or even longer if the maintenance is done properly and there are no system leaks.

Q4: What does a refrigerant compressor do?

A4: The refrigerant compressor is the main component responsible for circulating the refrigerant throughout the air conditioning system, thereby facilitating the absorption and removal of heat from the environment to cool the designated area.