Rinnai Low-GWP 55kW Heat Pump, bespoke thermal stores, Plate Heat Exchangers, and 10 cascaded I2HY20 Hydrogen-ready continuous flow water heaters have been specified for a new development in the heart of the Farringdon district of London.

On this site, Rinnai’s Hybrid H2 array of Low-GWP 55kW heat pump plus bespoke hot water stores, with optimized coil transfer to maximize heat pump performance, have been combined with ten cascaded Hydrogen blends ready (I2HY20 certified) continuous flow water heaters. The systems were delivered in one complete consignment, ready for installation at a new multi-million-pound development in the Farringdon district near the City of London. The expansive complex will comprise a new luxury hotel, prestigious & contemporary office space, plus affordable housing units.

The multi-purpose use of the site meant that only a fit-for-purpose design would satisfy the practicalities and nuances of space, demand, and energy usage in ensuring hot water requirements are met and exceeded 24/7. The site was originally a Victorian-era schoolhouse for poor children. It was a ‘Ragged School’ - the term 'ragged school' was used by the London City Mission as early as 1840 to describe the establishment of schools, ‘formed exclusively for children raggedly clothed'. From around 1845 until 1881, the London ‘Ragged’ schools gave rudimentary education to about 300,000 children who were the poorest of the poor - orphans, waifs, and strays.

The expansive retrofit site will pay respect to this heritage with many of the original features retained in the 150+ bedroom luxury hotel, almost 20,000 sq ft of opulent capital city office space, and nine new-build affordable residential units. The hotel group already has one other unit in London with two others planned.

Comments Darren Woodward for Rinnai, “The site is very complex and still has many original features from the Victorian era – meaning that a full and comprehensive site survey with capital expenditure, operational expenditure, and carbon modelling was conducted. We paid special attention to the practical requirements of the site which included 150 luxury bedrooms that needed constant hot water on demand, but we also needed to meet the site’s decarbonisation credentials. The overall system design meant that a truly hybrid system employing a heat pump, plate heat exchangers, bespoke thermal stores plus Hydrogen-ready hot water heating units was supplied in one complete consignment.

“We believe that a solution like this is the way forward on the bigger retrofit sites in London and all other UK cities. Once we had the data for capital expenditure, operational expenditure, and carbon modelling we were able to demonstrate to the clients a value proposition of a delivered-to-site-in-one-package. This site has proven that Hybrids can create a practical, economic, and technically feasible solution whereby all technologies and appliances work efficiently in terms of operational costs and lowering the carbon footprint without impacting overall system performance."

"Hybrids can create a practical, economic, and technically feasible solution whereby all technologies and appliances work efficiently in terms of operational costs and lowering the carbon footprint without impacting overall system performance."

Darren Woodward, Head of Sales (Southern Region) at Rinnai UK

The integration of Hydrogen blends ready 20% water heaters and Hybrid heating solutions is a significant step forward in sustainable building practices. By incorporating Hydrogen blends ready 20% water heaters, the development ensures a future-proof solution that aligns with the UK's decarbonisation goals. The Hybrid heating solutions, combining the efficiency of heat pumps with the reliability of continuous flow water heaters, provide a robust and adaptable system. This approach not only meets the immediate hot water demands but also supports long-term sustainability by reducing carbon emissions and operational costs.

Benefits of hybrid hot water and heating solutions

In conclusion, the use of Hydrogen blends ready 20% water heaters and Hybrid heating solutions at this Farringdon development exemplifies a forward-thinking approach to modern building requirements. The combination of advanced technologies and respect for historical heritage creates a unique and efficient solution that sets a benchmark for future projects. The successful implementation of these systems demonstrates the viability and benefits of integrating Hydrogen blends ready 20% water heaters and Hybrid heating solutions in large-scale developments.