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 of 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).
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.
The faulty sensors were therefore replaced and the ventilation system recalibrated so the AHU and main plant were back operating at their originally designed state. FCU complaints were investigated and it was found that blocked hoses and faulty actuators where the cause, which were also replaced.
AI technology for commercial
HVAC systems. Building optimisation made simple
Using advance machine learning technology and live data from IOT sensors installed throughout the building, Evotech's myBEMS solution has been deployed at Twenty Chapel Street to analyse, manage and optimise the building's HVAC system.
The result is reduced energy wastage and improved occupant wellbeing.
The results
after 260 days of optimisation *
of gas & electricity
saved
carbon emissions saved
reduction in
energy supply cost
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