Explore the key topics regarding refrigerants in the HVAC/R industry
Guide with information about retrofit and high glide refrigerants
Generally Danfoss recommends replacing the R22 systems with new ones, via alternative refrigerants.Main arguments to build new systems are:- Higher reliability of new systems- Higher efficiency / energy savings- Lower service costs / warranty on system- Reduced carbon footprintHowever, if you have to use drop-in replacements of R22, here you can find few recommendations on what you can do. Though, Danfoss takes no liability in case of malfunction of the systems with drop-in refrigerants.
In meeting the compliance deadlines, operators can pursue new-build or re-trofit strategies to cater for introduction of R22 substitutes. Danfoss recommends investment in new plant purpose-built for R22 substitutes as the most economic and environmentally friendly solution in the long term. Alternatively, existing plant can be retrofitted with hermetic compressors and controls to run on R22 substitutes, following a series of modifications and checks to ensure system reliability:
This document from Danfoss Commercial Compressors gives a thorough description of the retrofit or drop-in considerations, scenarios and process.
The Montreal agreement has triggered new discussion of R22 substitutes. This technical paper gives an overview on the composition and properties of the existing refrigerants, including R22 substitutes.
Read more about the R22 phase out in different regions in Danfoss whitepaper
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