Using natural CO2 as the refrigerant, the QAHV provides one of the lowest environmental impacts when generating potable hot water. It is engineered to perform well in harsh conditions and climates, and of course being an inverter heat pump it does so extremely efficiently. By adopting Mitsubishi Electric's unique technology, the QAHV ensures highly reliable performance as well as high heating capacity even at low outdoor temperatures.
Why Invest in Environmentally-Friendly Hot Water Solutions?
The industry is shifting. The Government has banned new coal boilers from the end of 2021 and businesses will need to phase out existing ones by 2037. Simultaneously the Government is providing $70M to support and incentivise businesses to switch away from boilers to cleaner, greener options for hot water production. While many may turn to natural gas, the Climate Change Commission is proposing no new gas connections to buildings from 2025 and a steep phase out of existing gas boilers from 2035 onwards.
Currently gas is used to produce hot water in the majority of commercial buildings in New Zealand, and while gas is an attractive option due to its compact footprint, it is a very high carbon emitter and isn’t particularly efficient, even if the building is using a modern condenser boiler – not to mention the potential risk to occupants if a leak occurs.
With the future of traditional forms of hot water heating uncertain, it is clear that those within the industry, engineers, designers, installers or owners, must move to new solutions for water heating in commercial buildings – and the move needs to start now.
CO2 Refrigerant is the Key to Future-Proofing Hot Water
The growing emphasis on global warming mitigation has stimulated interest in a new generation of low-GWP refrigerants, many of the new refrigerants being created feature GWP’s around 500 to 600 or even less. But nothing can compete with CO2 and its GWP of 1 – it provides the reference point for environmental impact that all other refrigerants are measured against.
The QAHV series utilises CO2 as it is an environmentally-friendly, safe and natural refrigerant with zero Ozone Depletion Potential (ODP) and a Global Warming Potential (GWP) of 1.
There is no greener alternative currently available in New Zealand.
Patented Mitsubishi Electric Technology increases Energy Savings
The Mitsubishi Electric QAHV System utilises a twisted and spiral gas cooler. This patented technology enhances energy efficiency while delivering high temperature hot water.
Using twisted pipes as water pipes and running the refrigerant pipes along their grooves helps to increase the heat-conductive area. 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 - boasting an impressive COP of 3.88*.
*Under normal heating conditions at outdoor temp: 16°CDB / 12°CWB, inlet water temp 17°C, outlet water temp 65°C.
Superior Heating Performance even at Low Temperatures
As ambient temperatures drop, so too does the capacity of heat pumps. However, the 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. This ensures a highly stable operation that at the same time, meets the guidelines for Legionella.
Better Security of Hot Water Supply and More Lettable Space
As a single pass high temperature lift machine, QAHV works best with a high water temperature difference and delivers 10l/min or more of full temperature usable hot water in real time. This directly reduces the amount of storage required to meet the peak demands, and gives quicker recovery. Ideal for commercial uses where hot water demand is high, such as gyms, hotels, motels, aged care facilities and hospitals.
Optional Mitsubishi Electric “BS” Salt Corrosion Protection System Available
To help extend the life of the QAHV outdoor unit when located within highly corrosive environments, the optional Mitsubishi Electric “BS” Salt Corrosion Protection System can be applied during the outdoor units manufacturing process to ensure all components are 100% protected before the outdoor unit is assembled.
QAHV-N560YA-HPB Key Features:
- Rated Heating Capacity of 40kW
- High efficiency (Achieved COP 3.88*)
- Supplies high temperature hot water of up to 90°C
- Operable even at low outdoor temperature of -25°C
- Utilises natural CO2 refrigerant which has zero Ozone Depletion Potential (ODP) and has a Global Warming Potential (GWP) of 1
- Uses a unique twisted and spiral gas cooler to enhance energy efficiency
- Compact dimensions, minimising plant space
* Under normal heating conditions at outdoor temp:16°CDB/12°CWB, inlet water temp 17°C, outlet water temp 65°C
While its environmental-friendliness is QAHV’s leading strength and the key to future-proofing from climate change and subsequent government legislation and regulation, its superior performance is what really makes QAHV a smart investment. For more information about our range of QAHV Hot Water Heat Pumps, click here.