Remote HVAC Optimisation at
Twenty Chapel Street, Liverpool
Learn how myBEMS enabled Twenty Chapel Street to optimise their HVAC
systems, reducing energy consumption by >26%, carbon emissions by
>17%, and create a more comfortable working environment.
Live Energy Savings Tracker
of gas & electricity saved
carbon emissions saved
reduction in energy supply cost
* cumulative totals from 17/01/2022
Twenty Chapel Street is a Grade A multi-tenanted office building compromising 155,000 sq.ft. of accommodation set over fifteen floors.
It's contemporary design and large areas of uninterrupted glazing provides tenants with stunning views over the River Mersey and Liverpool's historic skyline.
The building operates as a fully air-conditioned mechanically ventilated structure, utilising a constant volume air handling unit (AHU) to provide tempered fresh air.
Temperature control is provided by 4-pipe fan coil units (FCU's) located throughout the office and lift lobby areas.
Cooling demand is served by two air cooled screw chillers that supply pumped chilled water (CHW) to the building cooling systems and AHU; and heating demand is delivered by two gas fired boilers which provide low temperature hot water (LTHW).
Step 1: Improving HVAC operation
The buildings' HVAC system operated to a traditional fixed setpoint model, using the originally installed building management system (BMS). Uncalibrated temperature sensors from the original base build, located on the fan coil units (FCU), were used to control the entire floor space.
Individual FCU setpoints were adjusted daily on a complaint driven basis leading to differing micro-climates within the floor space, with demands for both heating and cooling plant to run at the same time. Faulty AHU and cooling plant temperature and pressure switches were also causing the plant to run inefficiently, with rouge heating / cooling demands often keeping the plant running 24/7.
Our HVAC engineers replaced the faulty sensors and recalibrated the ventilation system enabling the AHU and main plant to operate at their originally designed state. We investigated FCU complaints discovering blocked hoses and faulty actuators, which once replaced improved occupant comfort and wellbeing.
Step 2: Remote HVAC optimisation
Using advanced machine learning and live data from IOT sensors installed throughout the building, myBEMS analyses and optimises the building's HVAC systems 24/7.
Backed by our remote technical specialists, we monitor the building's HVAC systems in real-time to ensure optimal performance, and provide remote technical support, fault detection and diagnostics.
The outcome is improved energy efficiency, occupant comfort, and reduced HVAC maintenance costs.
The results
after 1461 days of optimisation *
of gas & electricity saved
27%
carbon emissions saved
27%
reduction in energy supply cost
29%
Annualised forecast
of gas & electricity
saved
carbon emissions
saved
reduction in
energy supply cost
Improved indoor environment & occupant wellbeing **
553 ppm
<100 bq/m3
101 pp6
41%
23 degrees
1/10
* cumulative totals from 17/01/2022 ** average measurements from 17/01/2022