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Carbon reductions for northern arena

Rinnai hot water systems are projected to produce ‘significant’ carbon reductions at a huge indoor arena in the North of England. The company has produced a designed system based on its R290 high-temperature heat pump. This arena regularly hosts large events such as concerts, conferences, theatre plays, exhibitions, live music and other conventions – so the site must have an energy efficient and carbon-reducing hot water system to achieve NetZero. 

Says Rinnai’s Sean Ehlen, “The results of this case study show that converting to a HP only option can reduce the carbon emissions over 5 years by 81%, or by 389,296kg of CO2. Furthermore, by opting for a high temperature commercial air source heat pump system the total annual energy usage required is 175,557kWh of electricity as opposed to the 478,129kWh of natural gas.”

The current system used by the arena is 2 x 116kW traditional gas-fired water heaters. Daily hot water demand of the indoor space is 4,377 litres. 

For the arena to decarbonize daily operations whilst meeting water demand, Rinnai has drawn up plans for 6 x 50kW R290 commercial Heat Pumps with an additional 800 litres of storage. Installing Rinnai’s High Temperature R290 commercial air source Heat Pumps at the indoor arena has enabled a huge reduction of 81% in carbon emissions when compared to the current system.  Below is a graph that illustrates the difference in carbon outputs over 5 years. The current system is highlighted in blue, and the Rinnai R290 commercial heat pump system is identified in purple.                                                                                  

Says Rinnai’s Sean Ehlen, “The results of this case study show that converting to a HP only option can reduce the carbon emissions over 5 years by 81%, or by 389,296kg of CO2. Furthermore, by opting for a high temperature commercial air source heat pump system the total annual energy usage required is 175,557kWh of electricity as opposed to the 478,129kWh of natural gas.” 

“However, as electricity is approximately 3x that of natural gas, the total operating cost of a high temperature commercial heat pump system will be 30% more than a gas system based on government projections. “ 

All Rinnai commercial heat pumps will continue to increase carbon reducing performance once the UK electrical grid undergoes modifications that allow the accepting and distribution of further renewable energies. 

Alongside the High Temperature R290 commercial air source Heat Pump, Rinnai have adapted their product offering to encourage commercial and domestic decarbonization. Rinnai’s H3 array of clean energy products include commercial heat pumps, hybrid solar and hydrogen ready heating and hot water systems.  

Along with the expansion of low-carbon products Rinnai offers design support services that consider the nuances of the building type. The customer facing design team will calculate the capital expenditure, operational expenditure and carbon of the range of heating systems on offer and support the end user in selecting the system that is practically, economically and technically feasible. To take advantage of this service contact Rinnai today via there interactive customer support services https://www.rinnai-uk.co.uk/contact-us/help-me-choose-product

Rinnai is sensitive to the change in UK energy market customer demands and is keen to offer products and ancillaries that best compliment the customer’s request. Rinnai aims to encourage clean energy usage across the UK by supplying, cost effective and robust efficiently performing products across a variety of existing and clean energies.   

25 July 2024

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