All hands to the heat pumps
Dehumidification equipment
manufactured by Calorex Heat Pumps is playing a vital role for the crew of two lifeboats stationed at the RNLI’s Trearddur Bay on the Isle of Anglesey. A Calorex DH30 controls the atmosphere in the drying room, ensuring waterproof kit and vital equipment is kept in pristine condition.
Established in the Sixties, the Trearddur Bay lifeboat station has received four awards for gallantry and is kept busy with up to four call-outs every day.
Earlier this year, the station’s Hereford Endeavour lifeboat was officially named by the Duke and Duchess of Cambridge in one of their first official engagements together.
More than 4,800 lifeboat crew members around the UK and the Republic of Ireland drop everything when their pagers go off; 24 hours a day, 365 days a year. Only one in 10 crew members have a professional maritime occupation. The Calorex DH30 at Trearddur Bay was installed by Gilks of Nantwich, one of the North West’s leading electrical contractors because the unit performs so economically yet is more powerful than other makes; working faster to ensure suits are dry for
the next shout. More economic
than traditional heating and ventilation
systems, dehumidifiers like the Calorex DH30 are not only cheaper to
run, they drastically reduce energy use and all but eliminate CO2
emissions.
Calorex systems are the most energy efficient on the market, producing 3kW of heat for every 1kW of electricity they consume. The potential energy savings are huge. In fact, compared to traditional heat and ventilation energy, they can cut costs by up to 50%.
Drying by traditional heating involves continuously warming a stream of outside air on a constant ‘in and out’ cycle equivalent to eight times the volume of the room every hour.
Energy Savings
Dehumidification, on the other hand, is much more sophisticated. It re-circulates the same air and physically removes moisture from it. This alleviates the need to continuously reheat incoming air. Not only that, a dehumidifier will cleverly convert energy taken out of the room as
moisture (latent energy), to create ‘sensible energy’ that can be used to heat the room, accelerating the drying process. This works by drawing moist room air into the dehumidifier that passes over a cold refrigerated coil. At this point the water vapour in the air condenses. The dried air is then heated up as it passes over the refrigeration circuit’s hot coil and re-enters the room.
The system is extremely energy efficient because it utilises the latent heat released by the condensation. This ‘free’ heating assists the drying process so that drying times and operating costs are substantially improved compared to the use of a conventional heating system. For more information on the
comprehensive range of high performance units, contact Calorex Heat Pumps Tel: 01621 856611; Email:
sales@calorex.com or visit the Calorex website at
www.calorex.com
MHI climate control ensures a comfortable stay for hotel guests
The latest climate control technology from Mitsubishi Heavy Industries (MHI) is all part of the service for guests staying in a new modern boutique hotel extension to the Red Lion Bar and Bistro in the beautiful Derbyshire countryside. A VRF heat recovery solution with discreet ducted indoor units provides heating and cooling as required in each of the 27 bedrooms, while a Twin Split System keeps the hotel reception at a comfortable temperature for guests and staff. Utilising MHI’s advanced
inverter technology, both systems adjust compressor output to match demand from indoor units to ensure consistent temperature control and achieve energy savings of up to 38%.
The high efficiency MHI air conditioning package for the Peak Edge Hotel at the Red Lion in the Peak District near Chesterfield was supplied by distributor 3D Air Sales Ltd and installed by Barnsley- based Maximum Cooling Services (MCS). The 3-pipe heat recovery system from MHI’s KXR6 range allows different rooms to function in cooling or heating mode simultaneously, with surplus heat from one providing useful energy for the other. Two outdoor units of 40kW and 50KW drive a total of 27 ducted indoor units - one in each hotel bedroom. Rob Smith, Director of MCS, says MHI’s comprehensive choice of VRF and Split Systems offered the best value solution for the new
Building & Facilities Management – September 2011
boutique hotel. He comments: “The heating and cooling capacity of indoor units from MHI’s FDUM Ducted System were specified to suit the room size, which range from superior double bedrooms to luxury suites. And although space was restricted we were able to install the compact units within the existing ceiling void above each room without additional ceiling work.”
FDUM ducted indoor units are supplied as standard with a Mitsubishi RCE4 remote controller. Rob Smith continues: “We’ve programmed the controllers into the hotel’s key card system so guests can activate the air conditioning when they enter their room along with the lighting.” The user-friendly RCE4 remote control unit has an easy-to-read control panel and allows hotel guests to adjust cooling or heating within a set temperature range without being able to over-ride important system functionality. For further information, see
www.mitsubishiaircon.co.uk For further information about the Hotel please visit
www.peakedgehotel.co.uk
energy solutions 19
HVRAC
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