London Refrigeration Society
We met on Thursday 9th Jan 2020 with a discussion presentation by “Matt” senior engineer from Fujitsu who spoke on VRF applications and explaining the pros and cons of 2, 3 and 4 pipe systems of heat and cooling systems.
Design in each case is critical, try to get as short runs as possible for gas saving by installing the outside “box” close to the demand areas. Ensure the smallest area to be heated is legally under the possible gas leak volume containment. Include leak detection in each area that shuts down the system in a sensed failure and this fault is transmitted to a customer reception desk and the contractors HO. (This is done much more efficiently on installation of the systems as cabling can be utilised)
Compressors ideally should run constantly, speed cycling at around 30% on BMS control. If they run to temperature then shut down until demanded - oil recovery, gas migration, noisy liquid hammer on start-up are all detrimental.
Failure to oil contamination can be to lack of Nitrogen purging on welded joints new compression joints are speedy and clean.
Fujitsu run courses around Britain and Ireland with advice tips and good practice on installation, fault finding of their systems with advice which will make engineers more confident in approaching failed systems
For information about Fujitsu IT products, services and solutions for businesses telephone AskFujitsu on 01235 79 7711.
You can write to Fujitsu UK & Ireland at:
22 Baker Street
London
United Kingdom,
W1U 3BW https://www.fujitsu.com › uk
We enjoyed a pre meeting hour or two looking at the very extensive air craft displays, before being very well informed on the 100 yrs of development in Halls compressors.
Thermazone build & install and renew existing, Air Chiller Plant fitted with their unique self-control and diagnostic software systems, which continually monitors the plant, feeding back to their control centre good and faulty reports.
They monitor each plant remotely monthly, studying history graphs and obviously live running conditions. Adjustments can be made without site attendance which means less expense with travelling time, mileage and allowing their engineers to deal with any real necessary and 6 monthly planned site visits.
The software link is via standard mobile phone links meaning that customers with sensitive information on their web systems, can be assured that their information is unaffected by outside engineering.
Trevor then looked into their system installed in the Greenwich Museum just across the road from the Tavern PH where we meet. This was via his mobile phone and laptop which was linked into the large TV in our lounge for us all to view actual running conditions and past history.
Our next meeting for December is jointly with the IOR :-
Celebrate the Anniversary of the formation of the IOR!
Wednesday 4th December 2019 15:00 to 17:00
A historical talk exploring the History of the
·
Presenter
Terry Young of J&E Hall will share his knowledge at this event during an informal talk.
Overview Join us on the 4th December at this IOR Anniversary Networking Event in association with the London Refrigeration Society.
On the 8th December 1899 the IOR was formed at a meeting chaired by R Leonard with 16 interested individuals. Initially known as the Cold Storage and Ice Association reflecting the early days of refrigeration in the UK, which was based on ice imports.
This celebratory meeting will take place at the RAF Museum in Hendon. Meet fellow RACHP professionals and hear an informal talk exploring the history of the compressor.
Before the presentation, those attending will have the opportunity to explore the RAF Museum an discover the fascinating story of the RAF and enjoy two interactive exhibitions.
· Timings Delegates will have until 15.30 to explore the museum. Click here to plan your visit. Doors for the talk will open at 15.30. The talk will begin at 16.00 and will be followed by a question and answer session The event was supported by the IOR Presidents' Fund.