Essential Components of a Refrigeration Room

The first thing that hits our minds when we hear the term refrigeration is about a unit that keeps our food items cold and fresh. Refrigeration is no doubt one of the most significant engineering accomplishments over the centuries. The refrigeration system involves the elimination of heat from spaces or objects while maintaining their temperature below the surrounding atmosphere. There are six primary components of a refrigeration room or system without which the existence of this system is impossible. Those six components are as follows –

  • Thermostatic Expansion Valve (TXV)

Located at the end of the liquid line before the evaporator, the thermostatic expansion valve (TXV) is a device that helps in controlling the amount of refrigerant flow to the evaporator. And there you will find the flood back which is essential for maximizing the productivity of the evaporator while preventing the additional liquid refrigerant from going back to the compressor.

The valve also helps in separating the high pressure and low-pressure sides of an air conditioning system. The high pressured liquid refrigerant enters into the valve through the liquid line of the system, but due to the presence of TXV, the amount of liquid refrigerant that enters the evaporator gets condensed.

  • Evaporator

The evaporator has a primary role of removing unwanted heat from the product or room through liquid refrigerants. Here, the liquid refrigerant needs to be at low pressure. And this low pressure gets determined by two factors, i.e. the heat that is absorbed from the product to the liquid refrigerant and the removal of low-pressure vapor by the compressor.

  • Capacity Control System

The capacity control system as the name suggests controls the power and energy consumption of the system. It also manages dehumidification as well as decreases the compressor cycling. The simplest form of capacity control is the on/off cycling of the compressor.

  • Compressor

A compressor draws low temperature and low-pressure vapor from the evaporator through the suction line. This vapor automatically gets compressed once diverted and also there will be a rise in temperature when the vapor gets compressed. Simply, we can say that a compressor converts low temperature to high temperature that is the cause behind the increase in pressure. Heat can be released easily through a compressor.

  • Condenser

A condenser is a device that extracts heat from the refrigerant. The fans placed above the condenser unit draws air over the condenser coils. The range of condensation temperature must be around -12 degrees Celsius to -1 degree Celsius. And the vapor gets cooled until it converts into liquid refrigerant again and retains some heat.

  • Receiver

A condenser is a device that extracts heat from the refrigerant. The fans placed above the condenser unit draws air over the condenser coils. The range of condensation temperature must be around -12 degrees Celsius to -1 degree Celsius. And the vapor gets cooled until it converts into liquid refrigerant again and retains some heat.

A receiver is a temporary storage and surge tank for liquid refrigerant that acts as a vapor seal. Its primary purpose is to preserve the vapor moving down the liquid line to the expansion valve. Receivers can be made for horizontal as well as vertical installation.

Are you looking for reliable and expert company that can cater your refrigeration room needs? Then we at Africhill are a South Africa based company who cater to the refrigeration and cold storage needs of customers worldwide. We have been operating in insulation and cooling or refrigeration industry for over twenty years. Our company specializes in manufacturing cold storage rooms, refrigeration room, condensing units, mortuary cabinets, insulated panel, condensing units and blower coils. To know more about our products talk to our consultants at +27 (0) 11 979 1885/ +27 (0) 11 396 2402/ +27 (0) 11 396 1379 or write to us at

Understanding The Difference Between Cold Room & Freezer Room

Cold rooms are otherwise known as walk-in coolers and can provide a substantial amount of chilled food storage space at your convenience. Nowadays, most manufacturers are providing bespoke, tailored cold room solutions designed best suiting your specific requirements.

When you want to stock a significant amount that should be refrigerated, a cold room can be the right solution as compared to multiple upright cabinets. This is the reason why most catering businesses, restaurants and hotels need to make the use of cold rooms for commercial refrigeration purposes.

Cold rooms are nothing but the insulated rooms within rooms, which are constructed to keep the cold air inside and the warm air out. They are standard installations in most commercial kitchens and storerooms. However, most people don’t know the difference between a cold room and a freezer room.

Do you need a cold or freezer room?

The question seems like a strange thing to ponder, and the answer will be simple. As per the structural point of view, both cold rooms are freezer rooms are similar. If they don’t look identical, there is a couple of technical features that sets them apart from each other.

The basic difference between a walk-in freezer and a cold room is that the latter operates at a temperature ranging from -2C°and 5C° while freezer rooms ranges from -40C° to -18C°. So, cold room is considered as cold; but the freezer room is to freeze the items and preserve it further.

Which type of room do you need?

This is an easy question to answer and needs a little consideration about your application. Most food service businesses have both a freezer and cold room. It all depends on what food you want to store and for how long.

However, foods and other perishables that you will keep for a short period and have ready for immediate use can be stored inside a cold room. The longer the required storage time and the lower the temperature range.

You may set the temperature at 5C° for the storage of eggs, vegetables, butter and cheese you will use tomorrow. But go to a lower setting for meat that you want them to stay fresh for a longer time.

On the other hand, freezer rooms are the space where you will keep meats and other products that you require to keep on hand for a long time period.

Where do you buy both a freezer room and a cold room?

That’s all about the difference between cold rooms and freezer rooms. Now that you know the right requirement for you application. Why don’t you take professional help from Africhill!

We manufacture, design and supply top quality cold rooms, freezer rooms and insulated panels at the best prices. Contact us today for immediate advice or to place a order for your new cold rooms or freezer rooms!

New Post

Africhill is one of the biggest manufactures in Africa for cold and freezer rooms and equipment and was established in 1998 by a experienced refrigeration technician and entrepreneur.

With our humble beginnings we have have shown astronomical growth over the years. We are based in Bredell, Kempton Park Gauteng, South Africa, conveniently near O R Tambo International Airport.

Africhill factory consists of a factory +/- 4500m2 big factory fully equipped with modern machinery plus 300m2 offices. Africhill specialise in design, manufacture and install refrigeration equipment and cold rooms and freezer rooms. Our factory can manufacture up to 3000m2 of panels a day.

Our refrigeration equipment is designed for durability and good aesthetic looks and saves on installation time for refrigeration technicians.

Africhill market consist mainly the whole of Africa but also other countries in the world.