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More information on Refrigeration Engineering

More information on Refrigeration Engineering

Refrigeration Engineering in researchRefrigeration Engineering and its measurementRefrigeration Engineering and its application

Refrigeration Engineering

In thermodynamics, coldness is an energetic imbalance. In engineering, this imbalance results from the forced exchange of heat between two places. Refrigeration engineering deals with various procedures to produce coldness in many different areas of application.
The basic procedures of refrigeration engineering are thermodynamic circle procedures, the energetic efficiency of which is constantly being improved thanks to modern refrigeration engineering. Especially important are compression refrigeration systems on the one and absorption refrigeration systems on the other hand. The energy that is needed for cooling is brought up via mechanical force in compression refrigeration systems, whereas in absorption refrigeration systems this heat energy is used. Refrigeration energy is used on a daily basis in many different fields. The food industry, air conditioning, medical technology and logistics are barely imaginable without it. If you don't find the refrigeration engineering instruments you are looking for, please contact us and we will help you find the best solution to suit your needs by calling our offices on: UK customers +44(0) 23 809 870 30 / US customers (561) 320-9162 and our technical staff will advise you regarding our measuring instruments. Our engineers and technicians will be happy to help you with the field of refrigeration engineering, and of course, with the other products in the field of regulation and control, and scales and balances of PCE Instruments Ltd.

Refrigeration Engineering for daily applicationPractical application of Refrigeration Engineering Refrigeration Engineering for chemical purposes

Refrigerating Machines


Cooling Appliance

Refrigeration Engineering: Refrigerating Machines Refrigeration Engineering: Refrigerants Refrigeration Engineering: Cooling Appliance

Refrigerating Laboratory Devices


Ultra-Deep Refrigerators

Refrigeration Engineering: Refrigerating Laboratory Devices Refrigeration Engineering: Refrigerators Refrigeration Engineering: Ultra-Deep Refrigerators

Compression refrigeration systems: A classical use of this refrigeration engineering procedure is the refrigerator. In this coldness-machine the cooling agent initially absorbs heat energy from the inside of the refrigerator on a low energy-level (low pressure, low temperature) and thereby evaporates. By means of the additional compression of the cooling agent, its energy density rises to a higher energy level (high pressure, high temperature). This energy can then be dispensed to the surrounding area via a condenser. During the process, the cooling agent condenses and is then relaxed via an expansion valve until it reaches its initial energy-level once again (low pressure, low temperature). Many procedures in refrigeration engineering are based on this principle. An evening cooling in this procedure, however, can only be guaranteed through a constant supply of electrical or mechanical energy in the compressor.

Absorption refrigeration engineering: A different procedure is used in absorption refrigeration engineering. Instead of mechanical energy, thermal energy is used. In the cooling circuit of the cooling-machine, a pair of materials is used that is completely soluble over a wide temperature range, such as water in certain saline solutions. In a first step, the gaseous cooling agent (water) is condensed. Hereby heat can be dispensed into the surrounding area. Then the liquid water is vaporised in a low pressure area. The needed vaporisation energy is taken from the cooling agent and thus coldness develops. In a further low pressure area, the steam is cooled and while dispensing heat returns to its fluid state and is solved with the salt. The watery saline solution is separated via external heat supply, whereby pure water as a cooling agent and a concentrated saline solution as a solvent are regained. The circular process is completed and can begin anew. In this method of refrigeration engineering, the coldness is thereby created under a steady supply of thermal energy.

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