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DENMARK: Danfoss has qualified a larger application envelope for its DSH medium scroll compressors using lower GWP refrigerants R452B and R454B.

As there are no technical modification on the compressors, ordering codes will remain the same. 

The maximum condensing temperature has been extended from 65ºC to 68ºC. So, high side working range is now 9bar(g) to 41.7bar(g) and maximum high pressure safety switch setting is adjusted accordingly from 40.6bar(g to 43.1bar(g). 

To achieve this larger envelope, the maximum allowable discharge temperature has been increased from 135°C to 150ºC. A new acoustic hood has been developed to withstand 150ºC discharge temperatures.

Related stories:

Danfoss approves lower GWP options for DSH scrolls18 April 2019
DENMARK: Danfoss has approved its DSH scroll compressor range for use with R454B and R452B refrigerants, the lower GWP alternatives to R410A. Read more…

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