During normal service operations a leak test does not entail a prior evacuation of the system unless the system is contaminated or the refrigerant has…
Some plants may be charged at the time of installation with a refrigerant which contains a coloured dye to provide a visual indication of leakage.…
These are sometimes referred to as piercing valves. They consist of a small clamp which is in two sections fitted to the pipework. Totally sealed…
Once again, bearing in mind that high pressures are generated whilst a plant is operating, care must be taken not to pollute the atmosphere when…
Although the task of fitting gauges is a simple one, it must be realized that any refrigerant has a pressure/temperature relationship: the higher the temperature…
This is also called a system analyser. It consists of a manifold on the top of which are mounted two pressure gauges (Figure 5). Underneath…
When servicing or commissioning any equipment it is necessary to record the system pressures by fitting pressure gauges. To make this possible, all commercial systems…
In reality, rotary compressors are of four general design configurations: (i) rolling piston, (ii) rotating vane, (iii) screw, and (iv) scroll. Therefore, rotary compressors have…
There are several mechanical components required in a refrigeration system. In this part, we discuss the four major components of a system and some auxiliary…
The main goal of a refrigeration system which performs the reverse effect of a heat engine is to remove the heat from a low-level temperature…