Case Studies

GRE were contracted to design, manufacture and install a bespoke, twin‑coil dehumidifier/chiller and cooling‑tunnel unit for the NHS Saliva testing laboratory at the University Hospital, Southampton, UK. The purpose of the machine was to keep

GRE were contracted by a blue chip sports broadcaster, to design and manufacture 5, air-portable, 130kW (at rated condition) air conditioning units, for the company’s mobile broadcasting suite and data centre. The unique constraints of

Client: Industrial manufacturing (vacuum deposition sector, worldwide)  Cooling Power: 24–140 kW (rated at -15°C return fluid)  Operational Temperature Range: -25°C to +30°C  System numbers: Integrated into over 400 machines worldwide  Interesting System features: Hermetically sealed scroll compressors, brazed heat exchangers,

Background   GRE won the contract to design and manufacture 4 bespoke thermoregulating (heating and cooling units), each unit having 4 separate circuits – the 4 circuits supplying 14x drums (all linked together in configuration

Client: Automotive test laboratory, Cambridge  Cooling Power: 320 kW  Temperature Range: -20°C to +20°C (max ambient 35°C)  System Capacity: Air-cooled glycol chiller, full-load tested  Interesting System features: Dual refrigeration circuits, semi-hermetic screw compressors, custom PLC/HMI  GRE designed

Client: UK’s largest power station  Cooling Power: 20–35 kW  Operational Temperature Range: Consistent 27°C, year-round  System Capacity: 60+ machines, all with over ten years of continuous operation  Interesting System features: Stainless steel welded pipework, shell and tube exchanger, custom

Client: Premier clothes retailer (Central London)  Thermal Power: 420 kW cooling / 350 kW heating  Temperature Range: Cooling: 6/12°C, Heating: 45/50°C  System Capacity: Custom heat pump chiller  Interesting System features: Multiple scroll compressors, bespoke controls,

Client: Armfield (global deployment)  System Capacity: Vapour-compression cycle demonstration unit  Interesting System features: Custom controls, corporate livery, wide operating range, open design for students to easily identify components  GRE partnered with the client to create a classroom demonstrator for teaching the reverse-Rankine refrigeration cycle. The system

Client: Mobile medical imaging client (UK)  Thermal Power: 60 kW  Temperature Range: +10°C to +30°C  System Capacity: Compact chiller for articulated lorry trailer  Interesting System features: Bespoke control, secondary chiller for transport, space-optimized design  Supporting

Client: Various Milk Banks (UK and worldwide)  Temperature Range: Ambient to 62.5°C ±0.2°C (pasteurisation), chill to <4.0°C  System Capacity: Fully automated, plug-and-play machines  Interesting System features: Stainless-steel construction, automated control, temperature logging, adaptable for many

Client: Approximately 150 households across the Southwest  Operational Temperature Range: 5°C to +35°C  System purpose: Domestic heat and water marshalling unit for district heating  Interesting System features: The wall-mounted systems allowed domestic houses to access heating and hot water from a centralised heat source. 

Client: Major UK power station  Cooling Power: 20 kW   Temperature Range: 7°C to 15°C  System Capacity: Portable, water-to-water chillers (pair)  Interesting System features: Standalone refrigeration, no hard-pipe connections, for rapid deployment in maintenance situations  To provide emergency cooling