Hardwick Square energy and plant review
Heat pumps used — of the metered electricity and ran every hour of the week. — of it was used outside working hours (Mon–Fri 07:00–19:00).
Savings & carbon
What schedule and setpoint changes are worth in a year, using cautious assumptions and counting the heating season only. Example values from one measured week; plant faults still to investigate are kept out of the totals.
Opportunities, by carbon avoided
t CO₂e a year, with the cost saving alongside. The dashed bar is a plant fault to investigate; it is not costed or counted until the cause is confirmed.
Opportunity register
| Opportunity | Status | Action | kWh / week | MWh / year | € / year | t CO₂e / year |
|---|
Found but not yet quantified
Likely savings that need metering or a site visit before a figure can be put on them.
- Heat pump condenser lift. Units draw full power with almost no temperature rise across the condenser; heat output needs the heat meter mapping.
- FCU fans running around the clock. Every unit on one riser ran its fan for the whole week; fan power isn't metered separately.
- Low ΔT on the LPHW and CHW headers. Excess flow means wasted pump energy; pump power needs sub-metering.
- FCUs not delivering heat or cooling. Rooms off setpoint lead to compensating plant and complaints; fixing supply problems comes first.
The building, modelled
Every heat pump, header and fan coil from the audit, placed where it sits in the building and coloured by what the data shows. Hover a unit for its readings.
At a glance
The shape of the week in four splits.
Where the electricity goes
Share of the week's metered kWh.
When it is used
Working hours are Mon–Fri 07:00–19:00.
FCU results
49 fan coil units checked.
Logs you can trust
1,288 logs checked for change and gaps.
Electricity
Where the power goes, and whether it drops when the building is empty.
Demand by load group
Hourly kW, stacked. Shaded columns are working hours; the load barely changes outside them.
Daily consumption
kWh per full day, by load group.
Average demand by hour of week
kW. A healthy office goes dark at night and at weekends.
Share used out of hours, by load group
Out-of-hours kWh as a share of each group's week. Hours outside Mon–Fri 07:00–19:00 are 64% of the week.
Heat pumps
Six units drew power around the clock, with almost no temperature lift across their condensers.
Electrical demand per unit
Hourly kW. ASHP 03 draws about four times its sister units.
Unit summary
Condenser ΔT is leaving minus entering water. A unit delivering heat would normally show about 5 K.
| Unit | Block | Run hours | Avg kW | kWh | Avg condenser ΔT (K) |
|---|
Distribution headers
Flow and return at the LPHW and CHW headers. A working circuit holds a clear, steady gap between the two.
Fan coil units
Did each unit's valve actually change the air it supplies? One box per FCU, grouped by controller.
Data you can trust
Every figure above comes from logs that are changing and complete. This is how many are.
Findings register
What the investigation turned up, the evidence behind each item, and the trade responsible for the repair. Kidd Automation identifies and evidences the issues; repairs are carried out by the site’s mechanical, electrical or controls contractor.
| Priority | Area | Finding | Evidence | Repair by |
|---|
From finding to fix
- BriefEach finding goes to the responsible contractor with the trend evidence and a clear description of the fault.
- RepairThe mechanical, electrical or controls contractor carries out the work. Kidd Automation advises on the process and priorities.
- VerifyThe fix is checked in the trend data and the finding closed, with before-and-after figures for the client.