FluxTwin CFD

🏭 Facility Specifications

Overview of the currently loaded digital twin model.

⚡ Total IT Load

170.4 kW (20 Racks, average 8.52 kW/rack)

❄️ Total Cooling Capacity

4 perimeter CRAC units supply 20°C air at 9 m³/s per unit. Return air drawn from hot aisle/upper zone, distributed via underfloor plenum to cold aisles.

🧊 Cooling Method

Air-cooling (Underfloor Supply via Perforated Tiles)

📐 Physical Layout

Total Floor Area: 79.56 m² (10.2 m × 7.8 m)
Total Room Height: 4.5 m
Raised Floor (Plenum): 0.64 m
Net Ceiling Height: 3.86 m

🏗️ Raised Floor System

Tile Porosity: 50% (perforated tiles in cold aisles)
Plenum Purpose: Cold air distribution

📊 Compare Scenarios

Compare operating parameters between scenarios.

Parameter	Scenario 1	Scenario 2
Total IT Load (kW)	170.4	170.4

ACU-1 Supply Flow (m³/s)	9.0	8.1
ACU-2 Supply Flow (m³/s)	9.0	8.1
ACU-3 Supply Flow (m³/s)	9.0	8.1
ACU-4 Supply Flow (m³/s)	9.0	8.1

ACU-1 Supply Temp (°C)	20	18
ACU-2 Supply Temp (°C)	20	21
ACU-3 Supply Temp (°C)	20	21
ACU-4 Supply Temp (°C)	20	18

🌿 Sustainability Impact

Thermal limit analysis & carbon optimisation

⚡ OPTIMIZATION MODE

System operating below ASHRAE limit

🌡️ Thermal Analysis

Max Inlet Temperature —

ASHRAE Limit (T_limit) 32.0 °C

Thermal Margin / Exceedance —

Safety Margin —

Buffer zone kept below the ASHRAE limit to avoid operating too close to the thermal boundary.

Usable / Required ΔT —

💡 RECOMMENDED ACTION

—

⚙️ Parameters

Safety MarginBuffer below/above limit

°C

CO₂ FactorGrid emission intensity

kgCO₂/kWh

COPCooling coefficient of performance

—

⚡ Power Breakdown

IT Load — kW

Cooling Power (current) — kW

Cooling Power (optimised) — kW

Total (current) — kW

Total (optimised) — kW

📊 Key Metrics

PUE (current)

—

Power Usage Effectiveness

PUE (optimised)

—

Power Usage Effectiveness

CO₂ Emissions (current) — kgCO₂/h

CO₂ Emissions (optimised) — kgCO₂/h

Annual CO₂ Saving Potential —

🔧 Retrofit Recommendations

Note: Retrofit analysis is based on CFD airflow observations. CO₂ savings for retrofit measures cannot be quantified without additional simulation data.

📊 Scenario Summary

Performance metrics and KPI assessment for the active scenario.

🔥

Max Inlet Temp

💨

Avg Airflow

KPI Performance Indicators

KPI	Value	Assessment
RCI_HI	--	🔥 Hot-air recirculation
RCI_LO	--	❄️ Cold-air bypass
RTI	--	⚠️ Overcooling
RHI	--	🔥 Moderate hot-air recirculation
RI	--	🔥 Hot-air recirculation
CCI	--	⚠️ Overcooling and inefficient airflow