In addition, there are other types of preservation processes which, although with different qualities, also aim to preserve the optimum conditions for food consumption, among which the following stand out: • Ultra-freezing: consists of subjecting food to temperatures below -40ºC for relatively short periods of time (
Most of the foodstuffs consumed daily nowadays need to be refrigerated because they are perishable (meat, fish, fruit, vegetables, etc.). For this reason, it is essential to guarantee their safety for as long as possible, thus avoiding possible health problems. What is the importance of refrigerating food? It has been proven that refrigeration of food at an optimum temperature plays a fundamental role in maintaining food safety. In many cases it is necessary to control and maintain the storage temperature, which will...
Nowadays, refrigeration and freezing are the two most widespread methods of food preservation. Food refrigeration is a preservation process based on the reduction or maintenance of a controlled temperature for a given time and space, usually in cold rooms. This process is based on the extraction of energy from bodies with high thermal energy, thus reducing their energy, and consequently bacterial activity, in this case, in the preservation of foodstuffs. When we talk about thermal energy, we refer to the temperature of...
Industrial or commercial refrigeration compressors are the fundamental part of the equipment and systems responsible for supplying and satisfying the refrigeration needs of a specific space, chamber, process… Compressors: the core of refrigeration systems What is a refrigeration compressor? The compressor is the main component of refrigeration equipment. its function is to compress the refrigerant gas or fluid, thus allowing pressure changes to occur in the refrigerant gas or fluid, causing it to move along the refrigerant circuit.These changes in pressure and temperature...
The refrigerant is compressed inside a cylinder thanks to the reciprocating motion of a piston by means of a crankshaft driven by an electric motor. This type of compressor is characterised by: • They have inlet and exhaust valves that allow a more constant flow. • The use of silent-block, in order to mitigate the high vibrations to which this type of compressor is subjected. • Oil level sight glass and crankcase resistance. • Connection for oil balancing. • Possibility of individual, tandem, trio or...
Defrosting is just as important a process as freezing if we want to obtain quality food. In this case, the rules are just the opposite of those for a freezing process. While freezing processes should ideally be carried out in the shortest possible time, when it comes to thawing, the ideal is just the opposite, that they should be as slow as possible (within reasonable limits). A very common practice to avoid whenever possible is to defrost food at room temperature, as...
The Radairan 20,000 CFM air handling unit is a device responsible for filtering air, controlling air speed, regulating air humidity, and more. Additionally, it is also used for cooling the environment. Therefore, it can be said that the price of the air handling unit is very cost-effective given its numerous applications. Air handling units can be broadly classified into two categories: building air handling units and industrial air handling units. These devices do not differ structurally; they only vary...
RADIRAN has designed wall-mounted evaporators for deep-freezing tunnels with high-flow motor fans and high static pressure available together with high-efficiency coils, in order to reduce freezing time and promote the formation of smaller crystals. To service these high cooling capacity demands, RADIRAN offers solutions and refrigeration systems using natural refrigerants (such as ammonia (R-717), propane (R-290) or CO2 (R-744) ready for commissioning thanks to their Plug & Play configuration. Cutting or processing rooms are among the areas with the highest risk of contamination, being classified...
“In order to contribute to the availability of food for a constantly growing population, demanding with the quality of the products of the meat industry" Meat becomes an ideal culture medium for the growth of almost any micro-organism. This is due to its nutritional qualities, neutral post-mortem pH (pH = 6.5), high water activity (aw = 0.98), and extrinsic factors such as temperature and oxygen concentration. Meat and meat products are perishable by nature and easily susceptible to microbial contamination and chemical...
Air defrosting In refrigeration, air defrost is an effective method of combating ice build-up in evaporators. This process uses the air in the chamber itself to defrost the frost efficiently. Its suitability is intensified in chambers above 4ºC, as at lower temperatures its effectiveness is reduced. The system starts with the closing of the liquid solenoid valve, which stops the refrigerant flow to the evaporator and to be emptied by the compressor until it stops. In this case the fans recirculate the air...
