Logarithmic Mean Temperature Difference
18May
04May
HVAC
HVAC stands for heating, ventilation, and air conditioning. The system is generally used in buildings or homes to control the indoor climate by regulating the temperature, humidity, and air quality. The aim of HVAC systems is to provide a comfortable and healthy living space for the occupants. An efficient HVAC system will not only provide comfortable conditions but can also reduce utility bills and improve indoor air quality. The heating component of an HVAC system involves various types of heating...
24Apr
The refrigerant condenser
In the refrigeration cycle, the refrigerant releases its heat in the condenser. Different designs and systems are used in everyday life. The refrigerant condenser is an important component in refrigeration and air conditioning systems. Its main task is to transfer the heat absorbed by the system to its surroundings. The condenser adjusts and regulates the condensation pressure in the refrigeration cycle. Depending on how much or how little heat is released to the surroundings, the condensation pressure of the refrigeration and...
21Apr
Everything you need to know about refrigeration evaporators Part 2
Selection process of a refrigeration evaporator
For a correct selection of a refrigeration evaporator, we must consider a series of factors such as the cooling load required by our refrigeration equipment, the relative humidity, the range, and the air speed required. In addition, we will have to pay attention to other factors such as the thermal jump, i.e., the temperature difference between the inside of the chamber and the refrigerant used. It is essential to find a balance in the thermal...
13Apr
Direct and indirect cooling systems
Refrigeration systems have more than one application, such as food preservation, equipment cooling, etc. It extracts heat from one environment and transfers it to another, thus cooling it first. We have a wide variety of refrigeration systems, all of them different, which gives us the possibility to choose the cooling system that best suits our needs, what we are looking for. In order to know which is the best in each situation, we must define them at various levels, and identify their...
08Apr
Other food preservation processes
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 (
06Apr
The importance of refrigeration in food
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...
03Apr
Food Refrigeration
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...
01Apr
Industrial or Commercial Refrigeration Compressors
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...
30Mar
Reciprocating or Piston Compressors
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...
