World News

Industry news and insights from Europe and around the World

UK News

Latest news and developments in the United Kingdom

Products

Keep up-to-date with the latest new products and technology

Features

General articles, applications and industry analysis

Daikin chillers in hospital transplant

UK: Daikin EWAH~TZ air-cooled VFD screw compressor chillers, using HFO refrigerant R1234ze(E), have been at the centre of a major heating and cooling transplant at Basildon University Hospital.

The four-storey Essex Cardiothoracic Centre (CTC) at Basildon University Hospital houses the county’s leading facility for heart and lung operations, with four operating theatres, four catheter laboratories, MRI and CT scanning facilities, and two 24-bed wards for recovery and in-patient requirements. 

The CTC’s ventilation and cooling systems, comprising two air handling units and two chillers sited on the roof, had been state-of-the-art when switched on in 2009, but had become unable to provide sufficient temperature and humidity control. The chilling capacity needed to be improved and the AHUs replaced at the same time because the original units had never achieved the required air-flow rates.

“The AHUs had air-on, air-off settings that complied with hospital technical memorandum standards at the time,” explained Iain Oakley, Mid and South Essex NHS Foundation Trust’s project manager. “But we know that due to global warming we are often experiencing ambient temperatures in excess of 31ºC. There were many days when the cooling capacity simply wasn’t available to meet the demands of the theatres and cath labs.

“We also couldn’t reduce the humidity in the operating theatres, which affected the equipment, occasionally resulting in the theatres and cath labs having to be shut down on days when the humidity was too high, because we could not risk the equipment failing during operations.”

Ellis Building Services were given a four-day weekend to remove the old equipment, then install and commission the new plant – working in a live environment.

“That was all the time the CTC would allow,” said Iain Oakley. “The theatres were shut down late on the Wednesday with work having to be finished on time because there was a list of operations scheduled to start at 08:00 am on the Monday.”

Latest News

14th June 2024

ECHA to consider PFAS impacts this year

FINLAND: European Chemicals Agency (ECHA) evaluations of the impact of fluorinated HFC/HFO refrigerants under proposed new European PFAS restrictions are expected to take place in November/December.
13th June 2024

Uzbekistan customs stop R22 equipment

UZBEKISTAN: Customs officers in the Uzbekistan capital Tashkent have stopped the importation of process chilling equipment running on banned ozone-depleting refrigerant R22.
13th June 2024

Varying refrigerant blends boosts HP flexibility

SWITZERLAND: Researchers have found that varying the composition of refrigerant mixtures can enable heat pumps to generate different temperatures from different heat sources, while increasing efficiency by up to 25%.
13th June 2024

Carrier joins US heat pump RTU challenge

USA: Carrier has joined the US Department of Energy’s Better Buildings Commercial Heat Pump Accelerator to develop next-generation heat pump rooftop units.
13th June 2024

Preserving CO2 charge during power outages

USA: ChargeSecure is a new charge preservation solution for CO2 refrigeration systems from Hillphoenix.
12th June 2024

Daikin breaks ground on new Tijuana facility

MEXICO: Daikin Applied and its subsidiaryAlliance Air have broken ground on a new $121m facility in Tijuana to manufacture custom HVAC and computer room air handler equipment and solutions.