The following case study will be of interest to anyone tasked with driving down costs and improving sustainability in a healthcare setting…
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 the stunning St Asaph cathedral, which is acknowledged to be the oldest of its kind in Wales, with 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 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.
For cost effective energy and carbon savings and FREE design support with Rinnai, contact a Rinnai expert today to find out more https://www.rinnai-uk.co.uk/contact-us/request-callback
Rinnai offers clear pathways to lower carbon and decarbonisation, plus customer cost reductions for commercial, domestic and off-grid heating and hot water delivery
Rinnai’s range of decarbonising products – H1/H2/H3 – consists of hot water heating units in gas/BioLPG/DME, hydrogen ready units, electric instantaneous hot water heaters, electric storage cylinders and buffer vessels, a comprehensive range of heat pumps, solar, hydrogen-ready or natural gas in any configuration of hybrid formats for either residential or commercial applications. Rinnai’s H1/2/3 range of products and systems offer contractors, consultants and end users a range of efficient, robust and affordable low carbon/decarbonising appliances which create practical, economic and technically feasible solutions.
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 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 CPDs.
The Rinnai 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.
More information can be found on Rinnai’s website and its “Help Me Choose” webpage.
Rinnai full product availability 24/7 for next day delivery of all hot water heating unit models including 48-58kw units, offering savings of:
20% REDUCTION of opex cost
30% REDUCTION of initial cost
15% REDUCTION in carbon
75% REDUCTION of space
Visit www.rinnai-uk.co.uk or email [email protected] for further information.
