Where to start

Executive summary

Results since optimisation started, Green Mark standing, comfort and items that need attention. Built for presenting.

Results

Energy & savings, system efficiency and carbon — the evidence behind the summary.

Operations

Live AI setpoints for the chiller plant and air-handling units, indoor air quality, and faults. Built for the operations team.

Insights

Comparisons beyond the Green Mark figures: occupancy against fan speed and energy, unit against unit, air-handling units against the chiller plant, and efficiency against weather.

Present

Hides navigation and download buttons. Use ← and → to move between pages and Esc to exit.

Colours

Green

Within target or limit.

Amber

Needs watching or planning.

Red

Action needed now.

Coloured dots

Green Mark section the card supports: Energy Effectiveness, Intelligence, Health & Wellbeing, Maintainability, Resilience, Whole Life Carbon.

Terms

kW/RT

Electricity used per refrigeration tonne of cooling. Lower is better.

Total system efficiency

Chiller plant efficiency + air distribution efficiency, in kW/RT, from annual energy over annual cooling. Compared against Green Mark limits.

EE50 · EE55 · SLE60 · SLE70

Green Mark energy tiers: EE50 = GoldPLUS, EE55 = Platinum, SLE60 and SLE70 = Super Low Energy. Each has an EUI and a total system efficiency limit for the building type.

Minimum (kW/RT)

Green Mark's highest allowed total system efficiency for an existing building, 0.90 kW/RT. The tiers need lower values.

ACMV

Air-conditioning and mechanical ventilation: the chiller plant plus air distribution.

Chiller plant

Chillers, chilled-water (CHW) and condenser-water (CDW) pumps, and cooling towers (CT).

Air distribution

Air-handling units (AHU), pre-cooled air units (PAU) and fan coil units (FCU).

RT / RTh

Refrigeration tonne (cooling rate) / refrigeration tonne-hour (cooling delivered).

Adjusted baseline

Energy the system would have used without optimisation, adjusted for weather and load.

EUI

Energy use intensity — building energy per m² of floor area per year.

Outdoor air (OA)

Fresh air supplied for ventilation, compared with the code minimum.

ΔP

Pressure drop across a filter. Rising ΔP means the filter is loading up.

MTBF / MTTR

Mean time between failures / mean time to repair.

Heat balance

Check that the plant's measured cooling, heat rejected and power add up — confirms the meters are accurate.