As the UK’s first carbon neutral gym chain, The Gym Group is also committed to pioneering sector-leading sustainability initiatives, and enlisted Mitsubishi Electric and Oventrop to deliver a reliable hot water system that can deliver for its members.
Analysis from the Leyland gym has now shown that a gas boiler for the hot water would have cost more each day and produced four times as much carbon every day than using the heat pump solution.
The solution is a Mitsubishi Electric Ecodan QAHV heat pump powered by an Oventrop Regumaq X-80 potable hot water station. This delivers instant hot water without the need for stored water, making it the best way to provide the desired high-temperature and low-temperature temperature. Hot water with charcoal.
The Ecodan QAHV pneumatic monobloc heat pump is a low-carbon renewable generation that is ideal for hot water production as it successfully delivers maximum water temperatures and has a low embodied carbon content. This is vital for Gym Group, which is the UK’s first. The gym chain is carbon neutral and committed to a science-based goal of reaching net zero emissions by 2045.
Oventrop’s Regumaq X-80 Potable Hot Water Station supports the QAHV heat pump by providing instant hot water without the need to store water. This makes it a low risk when evaluated for Legionella. Regumaq also has several features that ensure low temperatures back into the thermal tank, helping to maximize the power of the QAHV.
The Gym Group was a pioneer of the low-cost gym model opening its first gym in Hounslow in 2008 and now operates 230 high quality sites across the UK. These gyms offer 24/7 opening and flexible, no-contract membership. As of 30 June 2023, there were 867,000 members nationwide.
Gym Group Leyland is open 24/7 and offers free exercise classes, aerobics and weight-training equipment, and access to private educational services.
Faced with constant demand for hot water for gym showers, the company needed a physically potent and reliable formula that would maximize power, operating costs and carbon footprint.
Designed specifically for advertising domestic hot water applications, the QAHV CO2 formula can deliver hot water up to 90 degrees Celsius.
“The QAHV uses R744 refrigerant or CO2, giving it the lowest possible GWP (Global Warming Potential) of 1,” explains Dr. Samira Saravi, Product Manager for Hydronics at Mitsubishi Electric. “Not only can this ensure it complies with strict local planning laws it can also help boost BREEAM points on a project, which is why we are seeing an increase in its specification.”
The decarbonisation of the electric power grid and the UK’s commitment to Net Zero 2050 mean that QAHV is the best solution for reliable, high-efficiency hot water and makes it the ideal low-carbon solution for hospitals, hotels, recreation centres and student accommodation.
For The Gym Group’s Leyland gym, the QAHV is designed to operate indirectly, feeding a dedicated thermal store, which then links to the Oventrops Regumaq X-80 to deliver the domestic hot water for members. The system also maintains the stratification of the thermal store improving overall system efficiency.
“The Regumaq lowers the return temperature to the cylinder, which in turn decreases the return temperature to the QAHV,” explains Mike Wise, technical director at Oventrop. “This means that we locate the ‘sweet spot’ for QAHV and to achieve maximum heat pump power, while proceeding to deliver the instantaneous hot water.
The Gym Group is also benefiting from the data logging features built in to Regumaq. The pre-installed SD card logs all temperature sensors, relays, pumps outputs and water flow rates. This data is then used to identify daily peak loads and thus optimise the site.
Leyland’s knowledge has also come in handy when reviewing the design of other gyms within The Gym Group sites, as Mike Wise explains: “Most trendy hot water systems are still based on fuel-fired boiler designs that tend to oversize the appliances installed. This technique is no longer suitable for the era of renewable heating and large heat pumps will not only charge the visitor more, but can also minimise efficiency.
“Using the knowledge from this gym means we can prevent new sites from being over-specified, which helps reduce hot water system installation and operating costs. ”
“We are looking for cutting-edge tactics to reduce our carbon footprint in our gym operations, and this water heating formula for our showers is the best example of a sustainable solution that meets our members’ expectations and lowers prices at a time of higher energy bills. “says David Melhuish, Director of Development and Sustainability at The Gym Group.
“Working with Mitsubishi Electric and Oventrop has given us the opportunity to test a low-carbon water heating solution that could be deployed in other gyms in our area as we continue our carbon relief in line with our SBTi-verified goals until the end. . zero until 2045. “
https://les. mitsubishielectric. co. uk/
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