Iiar Ammonia Refrigeration Piping Handbook
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ITC Section 790 Refrigeration (ASHRAE), the standard for suction piping, is usually an inadequate guide for ammonia refrigeration applications. ITC Section 793 Reversed Refrigeration is the standard for drawing clear air and gas cutting in ammonia systems, and while it is a very good guide for ammonia systems, it is not adequate for most areas outside of Europe and parts of Russia.
IFC Sect. 120 Mechanical Refrigeration is for the commercial refrigeration systems and the critical elements in an RCCR for refrigerants that do not contain ammonia. In the industry, it is almost never used. It has a fairly extensive history of evolution, and contains numerous recommendations for the \"good engineering practice.\"
In the United Kingdom, IFC Chapter 6 Refrigeration & Air Conditioning (ICA) was established as a mandatory standard in 2003. ICA-6 is the standard for all refrigerants, ammonia and synthetic refrigerants, so the refrigeration community has adopted this as the standard for the UK. ICA-6 differs considerably from IFC Section 112 and IFC Section 120, so it appears to be a completely different standard. In fact, ICA-6 is based on IFC Chapter 6, so it is not. It is the standard of the refrigeration community throughout the world, and it is used to address the refrigeration industry.
IFC Section 112 Mechanical Refrigeration contains the most complete standard for the mechanical refrigeration arts. It is written for the industry, and is intended to cover everything that a refrigeration designer might use. It is the superior standard in the USA, and is widely accepted and supported by the refrigeration community as a whole. In Europe, the refrigeration code 652/2004 is the standard, with some modest extensions and changes in a number of specific areas.
The standard actually contains a good section on ammonia, the only overlap being the electrolyte qualification standards. This standard is a consolidation of the various IFC Chapter 6 standards. 7211a4ac4a
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