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 It supersedes guidance note GN17 which has been withdrawn.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.
Members - sign in to your web account to download this free pdf.
Not a member? Join here to download this and other publications
28 May 2025
Lots to discuss at the "enough" retail workshop on commercial refrigeration and food chain emissions reduction on 27th May
22 May 2025
IOR has published its latest Education Guidance Note in the series, this time focusing on Coaching as a way of employers supporting engineering and technician development. The Guidance Note (16) gives a guide to understanding the benefits of coaching, how this differs from mentoring and includes a useful list of organisations who can offer help with setting up coaching schemes or offer coaching.
21 May 2025
IOR members showed their support for the Cold Chain Federation (CCF) campaign to recognise the Cold Chain as part of the UK's critical national infrastructure, as they attended the CCF's reception at the Houses of Parliament on 20th May.
8 May 2025
Expert in climate change adaptation Tim Fox will deliver a keynote talk at the IOR’s Adaptation 2025 conference detailing why cooling is now a “mission critical” service, essential to public health, food security, global commerce, and economic well-being.
7 May 2025
Watch this webinar on catch-up, which focused on implementing technologies and operational strategies capable of significantly reducing greenhouse gas emissions across the European retail sector.