Mitsubishi Electric Y Series Manual page 226

HOT WATER HEAT PUMPS
226
QAHV Hot Water Heat Pump Series
As a leading manufacturer of air-to-water heat pumps, Mitsubishi Electric have developed
QAHV; the latest innovation in their comprehensive lineup of Hot Water Heat Pump products.
QAHV has been specifically designed to produce high volume hot water and is suitable
for commercial and industrial applications where hot water demand is high. By adopting
Mitsubishi Electric's unique technology, QAHV ensures highly reliable performance as well as
high heating capacity even at low outdoor temperatures.
Ideal Applications
Gyms
Hotels
Motels
Aged Care Facilities
Schools
Universities
Main Features of QAHV
• Utilises natural refrigerant (CO
• High efficiency (Achieved COP 3.88*)
• Supplies high temperature hot water of up to 90ºC
• Operable even at low outdoor temperature of -25ºC
Increased Energy Savings
Unique to Mitsubishi Electric, QAHV utilises a twisted and spiral gas
cooler. Using twisted pipes as water pipes and running the refrigerant
pipes along their grooves helps to increase the heat-conductive area;
allowing for better heat transfer and an impressive COP of 3.88*. The
continuous spiral groove design accelerates the turbulence effect of water
and helps to reduce pressure loss within the heat exchanger, enhancing
efficiency. Equipped with the latest inverter scroll compressor, QAHV
offers unparalleled efficiency when compared to fixed speed systems.
Superior Heating Performance in Low Temperatures
QAHV is able to provide its full heating capacity of 40kW even at ambient
temperatures as low as -3°C. Furthermore, the unit operates to supply
90°C hot water in ambient temperatures as low as -25°C. This superior
level of performance is achieved using Mitsubishi Electric's industry-first
Flash Injection Circuit which provides the optimum amount of refrigerant
to the system via a compressor through a specially designed injection
port, ensuring highly stable operation.
Why is CO Refrigerant Used?
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QAHV adopts CO2 (R744) as it is an environmentally-friendly, natural
refrigerant which has zero Ozone Depletion Potential (ODP) and has a
Global Warming Potential (GWP) of 1.
* Under normal heating conditions at outdoor temp:16ºCDB/12ºCWB,
inlet water temp 17ºC, outlet water temp 65ºC
)
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