Aircon Services were recently approached to find a more efficient cooling solution for the Main Data Room at ‘Travelport’ Head Office, Langley, Berkshire.

Their data room was being cooled using 3No. Liebert L99UA down flow close control computer room units and their corresponding Leibert HBE99 air cooled condensing units offering a combined Sensible cooling capacity of 255kW spread over 6No refrigerant circuits. The condensing units were located within a purpose built compound at ground level but across a service road. With the interconnecting refrigeration pipe work running through a trench below this service road. Over time the condensing units had become badly corroded resulting in inefficiency through lack of heat transfer. A new solution was required.
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“Aircon Services improved staff morale, and delivered cost effective Cooling.”

Graham Dumbleton, Martin-Baker

 

Martin-Baker Case Study

Martin-Baker Aircraft Company were experiencing temperatures of up to 40deg; Centigrade in various buildings at their Denham manufacturing site, and were also looking to improve their electrical efficiency. The company has a 22 acre site, making ejection seats and aviator survival equipment.

We were asked to cool various departments such as Auto Anodising, None Destructive Tests (NDT), the Kitchen (43deg; Centigrade), Sewing Room, Parachute Packing and Offices. All the departments required different approaches for the provision of ‘Cooled’ air.

We installed Evaporative Cooling and Extraction systems. This generated 100% fresh, filtered air, healthier working conditions and around 80% savings on conventional air conditioning. We fitted each department with a different air supply, with simple Ducts, specialized Plenums, Polymer Grilles, and bespoke Ventilation Socks.

All departments were cooled to around 21° Centigrade, including the Kitchen. The Ventilation ‘Socks’ provided cooled air virtually draft free.

Aircon Service’s Evaporative Cooling systems improved staff morale. It’s been very cost effective and should be expanded into other areas.

Graham Dumbleton, Site Manager at Martin-Baker

“Aircon Services provided a far better environment for our staff especially in the summer months.”

Simon, Jupp, Foxprint Services

 

24-hour commercial printers Foxprint Services were having difficulties operating at temperatures of up to 26 degrees; centigrade in their 4,000 square foot Pressing Hall. Paper and ink were becoming unstable and staff were uncomfortable.

We were asked to lower temperature and improve moisture control in the Press Hall, while keeping cost and energy consumption to a minimum”

We installed a single Breezair Evaporative Cooling system. It drives 100% fresh, filtered and water-washed air, throughout the workspace, driving the hotter, drier air out of the building. We fitted simple Ducts, and just 8 specialized Plenums.

The 4,000 square foot workspace reduced to 21 degrees centigrade evenly, and the quality of print and ink increased significantly. Staff comfort levels rose too.

Aircon Service’s Breezair systems improved print stability and production quality and was less expensive than air conditioning.

Simon, Jupp, Production Director at Foxprint Services

“The installation was completed within one month on budget and to schedule.”

Oxford University

We were approached by Oxford University to replace an existing 400Kw Carrier water chiller in one of the campus buildings that had reached the end of its economical life cycle.

The building has a 24hour year round requirement for cooling and we had to come up with a way of maintaining cooling whilst the chiller was replaced.

This was achieved by the installation of a temporary water chiller and pump set mounted externally at ground level and connected by flexible pipe work to the building chilled water circuit, the existing chiller was then isolated and the temporary chiller commissioned and made operational, this was left running for several days to check reliability before the existing chiller was de-commissioned.

Due to the construction of the building we were unable to lift the existing chiller through the roof aperture and it had to be de-commissioned and broken down into smaller manageable sections.

The new chiller had to be carefully selected for its technical suitability and physical size, a Daikin unit was eventually chosen with a clearance of 40mm either side of the existing aperture.

On the day of installation a large crane was positioned outside the building, the old chiller was removed in sections and taken from site for safe disposal, the new chiller was carefully lifted from the delivery vehicle and checked for vertical alignment as we only had clearance of 40mm either side of the roof aperture.

The lift proceeded and the chiller was installed onto its base with no issue or complications, the pipe work was then re-connected and the chiller commissioned.

The installation was completed within one month on budget and to schedule