Page 22 - NewsLester Issue 02

SARUM ELECTRONICS
CHILLING THE AIR AT TRENT UNIVERSITY
The gas in air-conditioning systems use chlorinated refrigerants, CFCS, which present health hazards when released into the air as greenhouse gases are harmful to the environment. Leaks will also significantly increase the running costs of a system, not least because the cost of refrigerants has increased dramatically in recent years.
Working in partnership with Nottingham based ACR Cooling Services, Sarum Electronics were asked to design, manufacture and supply an air- conditioning leakage control panel,
along with eight leak detectors for Nottingham Trent University’s Enterprise Innovation Centre (EIC Building).
The Sarum Electronics control panel
was supplied with eight new RD-em refrigerant leak detectors, and was designed to interface with an existing Building Management System (BMS). Once installed, the detectors alarm relays are energised during normal service
and de-energised when triggered by a leak or fault. The relay contacts in the detector housing are all wired back to the central Sarum control panel. All alarms
CFCS Detector Sarum Control Panel
are commoned so that if one detector is triggered, the Sarum panel will alarm and send an alert message to the main BMS. At the same time, the triggered detector in the room will sound a buzzer and display an LED to let the occupants know there has been a leak or fault.
To overcome the necessity for additional mains cabling, we recommend RD-em detectors which can be powered with 24V from the Sarum Electronics control panel. ACR Cooling Services, undertook the installation and testing of the Sarum Electronics supplied solution.
To achieve the desired result, Sarum supplied an external weatherproof control panel complete with speed- controlled inverter drives, a 3-phase thyristor frost heater and two DX coils for heating. The BMS fault enabled control panel also contained dirty filter indicators and fire alarm connectivity.
The new Argos opened in October with Teesside Live posting positive customer comments about the store.
ARGOS OPENS IN MIDDLESBROUGH WITH FRESH AIR VENTILATION
In many large facilities, the Air Handling Unit (AHU) generally recirculates a high proportion of the air contained within the facility to help lower energy costs associated with heating or chilling air. In all premises where many people are present, recycling unfiltered air can create a high-risk COVID zone.
Built five years ago, the massive then new, 80,000 sq ft Sainsbury’s super store in Middlesbrough never opened its doors to the public. In 2020 Sainsbury’s refurbished and sub-divided the premises into smaller units along with
a larger Argos store.
With the new Argos store opening
when the focus on customer safety
and airborne transmission of COVID is paramount, Argos decided to change the AHU system to make it more COVID safe for their customers and staff.
Working with Stafford based, Aircraft Air Handling Ltd, one of the UK’s leading manufacturers of AHU systems, we were able to provide an air circulation solution optimised for safety from the virus.
The solution enabled the store’s management to switch the AHU to fresh air instead of recirculating air during the store’s busy periods.
NEWSLESTER Issue 2 :: Page 22