CoolWise
Data Center Efficiency Assessment Platform
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HEATWISE
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EMPA
Zurich · Switzerland
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RISE
Lulea · Sweden
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Select Assessment Period
Start Time
End Time
Logging Interval (min)
1
2
5
10
15
30
60
📅
AAU data available:
12 Sep 2025 00:10 – 15 Sep 2025 00:00 | ⏱
Recommended logging interval:
10 min
📅 Data updated daily at 02:00 UTC — latest available:
📅 Data updated daily at 02:00 UTC — latest available:
📅
TOFAS data available:
10 Dec 2025 00:00 – 17 Dec 2025 23:59 | ⏱
Recommended logging interval:
1 min
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Loading real-time data and calculating KPIs
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EMPA · Direct to Chip Two-Phase Liquid Cooling
Start Time
End Time
Interval (min)
1
2
5
10
15
30
60
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FluxTwin™ CoolWise in your data centre
KPI Glossary
System Scheme
KPI Summary
← Dashboard
System Performance
▶
Energy
Waste Heat
Optimal Cooling Parameters
Valve Actual
—
%
Boiling Set Point
—
°C
Waste Heat Recovery
—
kW
Visualization Controls
▶
Temperature Scale
Min
Max
Apply
Rack Opacity
20%
Node Analytics
—
—
Inlet
—
Outlet
—
CPU
—
CPU %
—
Power
—
ASHRAE Inlet Compliance
15°C
18
27
32°C
Cooling Architecture
▶
Air Supply
—
Air Return
—
HRU Water Inlet
—
HRU Water Outlet
—
⏳
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KPI Trend
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Server Detail
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Heat Rejection Unit (HRU)
System Scheme
Data Centre Hydraulic & Cooling Scheme
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KPI Summary
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Assessment Report Ready
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KPI Descriptions
KPI
Full Name
Formula
Target Range
Ideal
PUE
Power Usage Effectiveness
PUE = E
DC
/ E
IT
1.0 ≤ PUE ≤ 2.0
1.0
CoP
Coefficient of Performance
CoP = 1 / (PUE − 1)
—
∞
ERF
Energy Reuse Factor
ERF = E
REUSE
/ E
IT
0.5 ≤ ERF ≤ 1.0
1.0
REF
Renewable Energy Factor
REF = E
RES-TOT
/ E
IT
0.6 ≤ REF ≤ 1.0
1.0
PES
Primary Energy Savings
PES = E
DC
− E
IT
—
0
WUE
Water Usage Effectiveness
WUE = W
site
/ E
IT
0 ≤ WUE ≤ 1.8
0
CUE
Carbon Usage Effectiveness
CUE = PUE × CF
grid
—
0
ITEUsv
IT Equipment Utilization for Servers
ITEUsv = Active CPU Utilization / Total Capacity
60–100%
100%
ITEEsc
IT Equipment Energy Efficiency for Servers
ITEEsc = ITEUsv / PUE
—
Max
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Interactive Node Analysis
Click on any server in the 3D rack to view detailed thermal metrics, power consumption and real-time ASHRAE compliance assessments.
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