HVAC
TR 30 – Newly Updated Heat Pump Guide Launched
T
he Building & Engineering Services Association (B&ES) has updated TR30, its good practice guide to heat pumps. The 50-page guide is designed to help building services engineers specify, design and install heat pump systems. These systems are usually based on packaged heat pump equipment where components and controls for the refrigerant circuits are pre-assembled and tested. The emphasis in the guide is therefore on the installation of these packages within the overall heating and cooling system.
TR30: Guide to Good Practice – Heat Pumps covers packaged heat pumps with electrically driven compressors, usually found in housing and small commercial premises. Bob Towse, Head of Technical and Safety at B&ES, said: “Heat pumps are important in many space heating and domestic hot water applications and are increasingly used as an alternative to conventional boilers.
“The amount of heat produced by heat pumps is greater than the energy used to drive the process so the cost
of heat provided by a heat pump can be less than the cost of heat provided by a boiler, even though the cost of electricity is greater than alternative fuel sources. However, this depends on the installation parameters and these are comprehensively discussed in TR30.” Mr Towse concluded: “The document also provides an overview of the different
AmbiRad sets the standard for heating large hangars
A
£15 million state-of-the-art hangar at RAF Brize Norton is showing its green credentials with a number of sustainable and cost saving features including energy efficient Nor-Ray-Vac continuous radiant tube heating from AmbiRad. Home to the RAF’s strategic air transport (AT) and air-to-air refuelling (AAR) forces, RAF Brize Norton is the largest station in the Royal Air Force, employing in excess of 6000 Service personnel, 1100 contractors and 350 civilians. The new two-bay 5000m2
hangar
has 16 metre high doors and can easily accommodate the giant C130J Hercules. With RAF bases typically on exposed sites the rapid response of conditions when hangar doors are opened required a heating system which was proven and highly efficient. Offering rapid heat recovery time and promising considerable cost savings over its lifecycle, the Nor-Ray-Vac system was once again up for the challenge of heating a
20 hvac
hangar having been used extensively across many civilian and military hangars. At RAF Brize Norton, the layout of Nor-Ray-Vac in the new hangar comprised 28 burners arranged in 8 zones with 4 vacuum fan discharge points. The unique design layout had to ensure that no part of the Nor-Ray- Vac system was directly over the fuselage, wings or tailplane of any aircraft. This was for two reasons; to prevent excess heat load on the aircraft and also, so as not to interfere with personal fall arrest systems. Suspended at 16 metres, the system incorporated ducted fresh air to the burners and end vents to ensure compliance with Crown Fire Standards which are mandatory on Military premises. With a peak gas load of 118m3
heat pump applications with their benefits and limitations, as well as giving some outline design information for each of them.”
For more information or to purchase a copy of the TR30, please call B&ES Publications on 01768 860405, or visit
www.b-espublications.co.uk
system provides rapid response to changed conditions and does not have to heat the volume of the building. With the hangar now in use,
/h, the Nor-Ray-Vac radiant heating
AmbiRad’s energy efficient Nor-Ray- Vac system is once again a well proven method of heating a large aircraft hangar and will play a key role in ensuring the RAF maintenance teams working on the Hercules fleet stay warm.
www.ambirad.co.uk
Building & Facilities Management – December 2013
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