The Radisson Blu at East Midlands airport is no ordinary 218 bedroom hotel. At the time of its launch in 2011, it achieved the highest ever BREEAM rating for a UK hotel, giving it a claim on being the UK's greenest hotel. Officially graded as 'Excellent', the hotel's status is down to a 285kW bio-oil Combined Heat and Power (CHP) system. It uses waste bio-oil generates enough electricity to support the hotel, including swimming, conference and leisure facilities. In turn, waste heat from this process is captured as a primary source of heating and cooling for the property. There was just one problem. When the Azure Group, the hotel's operator, took over the building, the utility costs didn't reflect the savings they expected from the UK's greenest hotel. It's not unexpected for short-term issues to occur with new, groundbreaking technologies. But when the hotel wasn't operating as expected after 2 years, they sought an expert partner to find out how to maximise their efficiency.
Finding the baseline
Optimised Buildings were commissioned for two purposes: identifying the cause of the issue, and ensuring better performance for the future.
A common issue presents when a building uses pioneering technology: a lack of historical data. Before we could optimise performance, we needed a baseline.
We began with extensive monitoring of the hotel's systems, and their consumption:
Using connected metering, consumption data was pushed to our intelligent, cloud-based monitoring and analysis platforms: "Optimised Energy" and "Optimised Analytics".
These bespoke solutions allow us to not only create baseline data and identify anomalies in performance, but accurately measure the impact that our changes made.
We then began the optimisation. As efficient as the technologies in the hotel were independently, they didn't work together well. This led to increased wastage and operating cost.
As a result, we specifically tuned the CHP system to work alongside the Absorption Chiller, BeMS, boilers, and electric chillers.
To ensure the performance was maintained and maximised going forward, we implemented a remote managed service. Using this, we can monitor and commission systems as needed to ensure that consumption is as efficient as possible.
A return to Excellence
Our hands-on optimisations, in tandem with our managed optimisation strategy, have brought significant savings to the hotel. Notably an overall reduction of 30% kWh consumption across electricity and gas, and a 17% reduction in electricity consumption.