REFRIGERATION

Your local commercial and residential HVAC experts

REFRIGERATION

The process of heat removal and transfer from a reservoir of low temperature to a reservoir of high temperature is known as Refrigeration. By tradition, transfer of heat is driven through mechanical means, but the drive can also be by heat, laser, electricity, magnetism, or other means. Refrigeration can be applied as household refrigerators, cryogenics, air conditioning, and industrial freezers but not limited to all listed. The refrigeration process emits heat, and the heat output can be utilized by heat pumps. The heat output may also be reversible depending on the design but otherwise create a similarity with air conditioning units.

Various working fluids, also known as refrigerants, are applied by technologies such as heat pumps, ORC cycles, and refrigeration. Refrigeration can also be defined as the science of producing and maintaining the temperature that is below the surrounding atmospheric temperature. It also means heat extraction in continuity from a body temperature lower than its surrounding atmosphere temperature.

In Fort McMurray, we are experts in refrigeration service of freezers, merchandisers, walk-ins, reach-ins, display cases, chillers, HVAC systems, coolers of all makes, rack systems and many more. We have qualified technicians with experience on both conventional operated by mechanical controls and parallel rack systems operated by a trendy technology of computer controlled systems. Contact us any time, and we will dispatch with immediate-effect one of our nearest technicians here in Fort McMurray or any of your location.

A refrigerator works by submitting the refrigerant circulating inside it to change the process of evaporation (liquid to gas). The evaporation process then cools the surrounding atmosphere and produces the effect desired. This process can be tested on your own by taking and putting a drop of alcohol on your skin; a chilling sensation will be felt as it evaporates off your skin. This same basic principle is applied to provide us with safe food storage.

The reduction of the refrigerants’ pressure is done through a capillary tube (outlet), and this has to be carried out to commence the evaporation process in changing the refrigerant from liquid form to gas . Such an effect is similar to that of an aerosol product like hairspray. Let’s take to the aerosol contents to be the pressured liquid, the outlet to be a capillary tube, and the evaporator as the open space. The pressured liquid is converted to gas form when the content is released into an open space with lower pressure.

For the gas to be compressed back to its original higher temperature and pressure, the gaseous refrigerant has to be in its original liquid state to keep the refrigerator running. And here we have the compressor; it provides an effect that is similar to that of a bike pump. There is a sense of heat increment while pumping and compressing the air. The gas should be placed under hot high pressure once the compressor has completed its work. The condenser is mounted at the rear of the refrigerator, and the gas has to be cool in it for the ambient air can cool the gas contents. The gas changes back into a liquid form once it gets cooled in the condenser.

Then, we have a cycle.

Let’s quickly have a summary of the six main components of a typical refrigeration system.

The components are:

Thermostatic Expansion Valve (TXV): it is a device located at liquid line end. It controls the refrigerant amount that flows to the evaporator. TVX also helps in the separation of an air conditioning low-pressure sides and high-pressure sides. It abridges the amount of liquid refrigerant that should enter the evaporator.

Evaporator: An exclusive purpose of the evaporator is for removal of unwanted heat away from the product via liquid refrigerant which should be at low pressure by the time the removal is being conducted. There are two factors that determine this low-pressure; low-pressure vapour removal by the compressor and the absorption of heat to the liquid refrigerant from the product.

Capacity Control System: The name tells it all. The regulation of power and energy consumption is done by Capacity Control System. The management of dehumidification or decrement of compressor cycling can also be carried out by this component.

Compressor: A compressor handles the conversion of low-temperatures to high-temperatures which can add up to increase in pressure. Heat is easily released through a compressor.

Condenser: It is a device that handles the extraction of heat from the refrigerant. Air is drawn over the condenser coils by fans placed over the condenser unit. -12°C to -1°C should be the range for condensation temperature; vapour will then be cooled till it turns back into a liquid refrigerant and retains some heat.

Receiver: The receiver behaves as vapour seal. It is a liquid refrigerant surge tank (temporary storage). Its major purpose is to preserve the vapour in the liquid line as it goes down to the expansion valve and that tells you a receiver can be made for vertical installation and horizontal installation.

There are four types of refrigeration systems, and they are:

  • Mechanical-Compression Refrigeration Systems
  • Evaporative Cooling
  • Thermoelectric Refrigeration
  • Wide World of Refrigeration

We offer refrigeration equipment of high quality in Fort McMurray and anywhere. Contact us for more inquiries.

Leave a Reply