The Rolls-Royce of Water Chillers

ThermaCom Ltd can report back upon a Project completed late in 2009 for Mssrs Rolls Royce at their prestigious London offices.

rolls royce

Now in 2011 we can report that not only has the prior problem of repetitive compressor failure been completely eliminated (on the systems upgraded), but by now the considerable energy saved has completely paid for the whole project.

The water chiller concerned is a French Multiclima system supplied in 2001, utilising six off reciprocating compressors installed in a compact unit, with plate heat exchangers for both Condensers and Evaporators, and using HFC R407C refrigerant.
ThermaCom involvement arose due to the significant volume of reciprocating compressors routinely failing.

Close scrutiny of the plant revealed several key concerns...

1: An inconsistent building chilled water load, presenting a wide variation in load conditions, with considerable variations in chilled water demand over a short period.
2: Low mass volume of refrigerant, also understated on the Manufacturer’s data plate.
3: Resultant system instability causing the systems to run with liquid slugging / return to the compressor – lethal for Reciprocating compressors.
Piston compressors will not tolerate significant levels of liquid refrigerant return, and those operating upon R407C are particularly prone to valve failure due to the reduced upper cylinder lubrication with Polyolester lubricants, a necessity with R407C.

Resolve

ThermaCom re-selected new Hanbell Screw compressors, duty matched to the original reciprocating compressors. Not only has this completely resolved the issue of failure on the two systems upgraded, the power consumption has reduced by some 30 – 40%, and this has paid for the entire upgrade within 18 months.

For full details of this project the Case study and others for similar Water Chiller upgrade projects under the unique ‘Re-Chill®’ concept visit www.thermagroup.com

Press Release for Modern Building Services – May 2011

We supply and remanufacture compressors and offer repairs on leading compressor brands found throughout the HVAC industry. We also specialise in chiller and air-conditioning repair, servicing and remanufacturing.

View full product range

 

UK Offices

Want to discuss a potential project? Come and have a chat with us.

 

Reading

Preston Road
Reading
Berkshire
RG2 0BE
United Kingdom

Nottinghamshire

Celsius House
Summit Close
Kirkby In Ashfield
NG17 8GJ
United Kingdom