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Mitsubishi Electric
Mitsubishi Electric Case Studies
Ecodan Case Study
A four bedroom house in Bedfordshire is the first
home in the UK to benefit from the new, revolutionary Ecodan heat
pump. As a result CO2 emissions from the home’s heating system were
reduced by 47% and the overall carbon emissions from the property by
an impressive
34%.
The homeowner sought to reduce his carbon footprint and by
installing Ecodan was able to do so, whilst at the same time,
providing an ideal case study for the advanced heating system in
operation.
Built in 2000, the four bedroom detached house has double glazed
windows as well as loft and wall insulation. The existing heating
system was previously run by an 80% efficient gas boiler providing
23.2kW of heat output from an input of 29kW. Based on the existing
radiators
it was calculated that the total heat output of the radiators was
13.4kW under standard boiler conditions with a flow temperature of
70ºC and the hot water demand of the home totals 140 litres per day.
Using the Ecodan heat pump, the heat load of the house was
calculated to be 8kW. Operating at a flow temperature of 55ºC the
heat output of the radiators will be 8.4kW, confirming that Ecodan
is fully capable of meeting the heating demand of the house, using
the existing radiators. In addition, one area of the house was
changed to underfloor heating.
The heat load of a house varies with ambient temperature.
Traditional systems would vary the output from the radiators by
turning them on and off frequently with Thermostatic Radiator Valves
(TRV’s), in order to meet the fluctuating demand.
As the ambient temperature increases, the heat load of the house
decreases. The highly efficient Ecodan varies radiator heat output
by changing the flow temperature, ensuring the highest level of COP
possible. With average UK winter temperatures ranging between 2ºC
and 7ºC, Ecodan operates at average flow temperatures between 35ºC
and 45ºC providing the highest levels of energy efficiency.
New System Uses Excess Heat to Provide Free Hot
Water
The owners of a four bedroom house in Kent have
been using a unique new boiler to provide free heating for their
swimming pool, whilst enjoying fully controllable air conditioning
to provide year-round comfort cooling and heating.
When the house, which stands in the grounds of an Equestrian Centre
near Dartford, Kent, was being refurbished the owners decided to
install air conditioning in the bedrooms and an annexe containing a
small gymnasium.
With rising summer temperatures, especially in the South East of
England, the owners wanted a system that would provide comfort
cooling particularly at night, but which would also be versatile
enough to cope with Britain’s variable temperatures by being able to
switch to heating.
“Added to this was the need to replace the heating source for the
property’s outdoor swimming pool, which had previously been heated
by a wood-burning boiler,” explained Andy Hubble of H and H Services
Ltd, who installed the Mitsubishi Electric equipment.
This wood-burning boiler had proven expensive to run, troublesome to
maintain and made it very difficult to control and regulate the
temperature of the pool. Whilst summer cooling was the primary
driver for the installation, the owners also wanted to control
energy costs and find an alternative to the high maintenance pool
heating system.
With the installation of a City Multi 2-pipe VRF heat recovery
system coupled to the unique PQFY heat pump boiler, the owners now
have the best of both worlds - fully controllable air conditioning,
and free hot water for the swimming pool.
The PQFY heat pump boiler uses the vapour compression cycle of the
air conditioning system to raise the water temperature of the
outside pool to a comfortable level.
Instead of simply discharging the heat from the refrigerant to the
air as in a conventional split type air conditioner, the hot gas
pipe in the PQFY runs through the water piping in a unique
tube-in-tube coaxial system that extracts the heat from the
refrigerant cycle and transfers it directly to the water,
effectively providing free hot water for the swimming pool and
helping to reduce the running costs by more than half.
It is also around four times better than the most efficient type of
conventional gas boiler on a kW/kW basis, leading to a substantial
reduction in CO2 emissions.
Request information above
Mitsubishi Electric VRF Air
Conditioning Heat Pumps Air Curtains Ground Source Heat Pumps
Passive Ventilation Close Control AC
Request information above
Mitsubishi
Electric VRF Air Conditioning Close Control Air Conditioning Heat Pumps Air
Curtains Ground Source Heat Pumps Passive Ventilation
Technical information associated with:
Mitsubishi - Case Studies 1
Mitsubishi - Case Studies 2
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Mitsubishi Electric Europe
Living Environmental
Systems Division
Travellers Lane
Hatfield
Hertfordshire
AL10 8XB
Email this company
Tel (Air Con Sales) : 01707 282800
air.conditioning@meuk.mee.com
www.mitsubishielectric.co.uk/aircon
Tel (Heating Sales) : 01707 278666
Email : heating@meuk.mee.com
www.mitsubishielectric.co.uk/heating
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