DENBIGHSHIRE COUNTY COUNCIL SLASHES FUELS costs
by OVER 70% WITH RINNAI continuous flow water heaters
Denbighshire is one of the most picturesque counties in the whole of the UK with the Vale of Clywd a designated Area of Outstanding Natural Beauty and St Asaph cathedral, which is acknowledged to be the oldest of its kind in Wales with its origins dating back 1400 years.
With this background of pedigree and culture the county council has embraced NetZero and strives to utilse all technologies to make as many of its properties as fuel efficient as possible.
The Denbighshire Energy Team are continuing work to drive down energy usage and costs across its expansive and nuanced estate. The Team has managed projects across Council buildings, including schools and care homes to improve building energy efficiency and reduce emissions and usage costs over the longer term.
At the Council owned and operated Cysgod Y Gaer Residential Home for 30 occupants the fuel consumption for the hot water heating system has been slashed from 750kWh to just 200kWh per day – with the support of Rinnai products and design support services.
“This is a care home where we recently removed two hot water cylinders that were heated by the main heating boilers. We replaced them with high efficiency Rinnai water heaters that only heat water on demand. We can see the gas consumption has decreased from an average daily consumption of 750kWh down to 200kWh per day’ said a manager from the Denbighshire Energy Team.
Figure 1: care home gas consumption (AMR data). Reduction from c750kWh/day down to ~200kWh/day post installation of Rinnai units.
The Rinnai units installed are models from the N Series range. The Rinnai N Series continuous flow hot water heater range offers a more compact, enhanced combustion design that allows for easier installation, superior operational performance as well as ease of serviceability all points that have assisted in reducing overall cost to the council.
The Rinnai N Series is the first continuous flow hot water heating unit manufactured with stainless steel heat exchangers – this gives a greatly extended working life at optimum performance to each of the four models in the range.
The four models are:
The four models are: - the N1600i giving 954 litres per hour (at 50 degrees)
- the N1600e (external) also giving 954 litres per hour (at 50 degrees).
- the N1300i giving 775 litres per hour and
- the N1300e also giving 775 litres per hours of temperature controlled hot water at 50 degrees. The two 1600s have load profiles of XXL and are water efficiency class A rated, while the 1300s are load profile XL and are also water efficiency class A rated.
All the range is also low-NOx (Less than 26ppm meaning they gain additional points under BREEAM) and the futureproofed continuous flow water heater utilises Rinnai’s patented advanced burner technology with a 13-1 turn down ratio – the largest on the market combined with 96% efficiency rating. Integral controls on the units enable the water heater to achieve high efficiencies because of advanced burner control and high modulation ranges. These features ensure that the system optimises gas usage meaning that the council can squeeze every ounce of energy out of the water heating process and reduce energy usage by 73%.
This wide range of modulation means that energy usage is completely optimised as the water heater through smart inbuilt controls will only heat the water to the temperature required thus preserving energy.
Rinnai is a true global player in the manufacture of domestic and commercial appliances and operates in almost 50 countries. Rinnai’s mission is to “create a healthier way of living” through advanced combustion technologies and water control technologies. Therefore, Rinnai has created its H3 initiative. This consists for hydrogen ready and BioLPG ready water heaters and boilers, Hybrid solar thermal and heat pump solutions and LOW-GWP heat pumps.
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RINNAI’S H3 DECARBONISATION OFFERS PATHWAYS & CUSTOMER COST REDUCTIONS
FOR COMMERCIAL, DOMESTIC AND OFF-GRID HEATING & HOT WATER DELIVERY
www.rinnai-uk.co.uk/about us/H3
Rinnai’s H3 range of decarbonising products include hydrogen / BioLPG ready technology, hybrid systems, and a wide range of LOW GWP heat pumps and solar thermal. Also, within Rinnai’s H3 range is Infinity hydrogen blend ready and BioLPG ready continuous flow water heaters which are stacked with a multitude of features that ensure long life, robust & durable use, customer satisfaction and product efficiency.
Rinnai’s range of decarbonising products – H1/H2/H3 – consists of heat pump, solar, hydrogen in any configuration, hybrid formats for either residential or commercial applications. Rinnai’s H3 range of products offer contractors, consultants and end users a range of efficient, robust and affordable decarbonising appliances which create practical, economic and technically feasible solutions. The range covers all forms of fuels and appliances currently available – electric, gas, hydrogen, BioLPG, DME solar thermal, low GWP heat pumps and electric water heaters.
Rinnai H1 continuous water heaters and boilers offer practical and economic decarbonization delivered through technological innovation in hydrogen and renewable liquid gas ready technology.
Rinnai’s H1 option is centred on hydrogen, as it is anticipated that clean hydrogen fuels will become internationally energy market-relevant in the future; Rinnai water heaters are hydrogen 20% blends ready and include the world’s first 100% hydrogen-ready hot water heating technology.
Rinnai H2 – Decarbonization simplified with renewable gas-ready units, Solar Thermal and Heat Pump Hybrids. Rinnai H2 is designed to introduce a practical and low-cost option which may suit specific sites and enable multiple decarbonisation pathways with the addition of high performance.
Rinnai H3 – Low-GWP heat pump technology made easy – Rinnai heat pumps are available for domestic and commercial usage with an extensive range of 4 – 115kW appliances.
Rinnai’s H3 heat pumps utilise R32 refrigerant and have favourable COP and SCOP.
Rinnai is a world leading manufacturer of hot water heaters and produces over two million units a year, operating on each of the five continents. The brand has gained an established reputation for producing products that offer high performance, cost efficiency and extended working lives.
Rinnai’s commercial and domestic continuous flow water heaters offer a limitless supply of instantaneous temperature controlled hot water and all units are designed to align with present and future energy sources. Rinnai condensing water heaters accept either existing fuel or hydrogen gas blends. Rinnai units are also suited for off-grid customers who require LPG and BioLPG or DME.
Rinnai products are UKCA certified, A-rated water efficiency, accessed through multiple fuel options and are available for purchase 24/7, 365 days a year. Any unit can be delivered to any UK site within 24 hours. Rinnai offer carbon and cost comparison services that will calculate financial and carbon savings made when investing in a Rinnai system. Rinnai also provide a system design service that will suggest an appropriate system for the property in question. Rinnai offer comprehensive training courses and technical support in all aspects of the water heating industry including detailed CPD’s.
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