5 Jan 2023
This guidance note provides guidance on the different methods used to manage oil in ammonia refrigeration systems. It supersedes guidance note GN17 which has been withdrawn. In this guidance note the term “oil” is used to cover a range of lubricants including mineral oil, synthetic oil, processed mineral oil (for example, hydrocracked oil) and other synthetic compounds such as alkyl benzene, polyalkyl glycol, polyol ester and polyalfaolefin. Not all of these synthetic compounds are compatible with ammonia.
Oil management on the low-pressure side of ammonia systems is necessary to keep the evaporators in good working order and to maintain system efficiency. The type of facility provided for the removal of oil from the low-pressure side of the system depends on the type of system, the type of oil, the level of manual intervention expected by the end user and the capital cost constraint on the installation.
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21 Jul 2025
We encourage all members to engage in the consultation process by reading the draft standard and submitting comments through the on-line BSI portal, or by sending comments back to the Institute Technical Committee who will collate the comments and submit them on your behalf.
10 Jul 2025
The IOR’s RACHP EngTech Section is proud to announce the launch of an innovative mobile technician’s app, now available on the Apple App Store and Google Play Store.
29 Jul 2025
Three candidates for the next IOR President-Elect have been announced and an election will be held later this year.
24 Jul 2025
We regret to report the sad news that Paul Moseley a Fellow of the Institute and long term member has passed away
21 Jul 2025
The IOR is calling for submissions for the Beyond Refrigeration Environmental Award! This prestigious annual award celebrates innovative UK projects that are making a real impact by cutting environmental emissions from cooling systems, driving us closer to vital net-zero goals.