🌡️ ASHRAE TC 9.9 (A1 to A4 Envelopes, Recommended 64.4°F-80.6°F Inlet, Free Cooling Hours)

ASHRAE TC 9.9 Server Inlet Calculator

Evaluate data center IT equipment supply air temperatures under ASHRAE TC 9.9 Thermal Guidelines: calculate economizer free-cooling hours unlocked by expanding server inlet setpoints from legacy 68 deg F up to the recommended envelope (64.4 deg F to 80.6 deg F / A1 to A4 allowable classes), calculate PUE reductions, and energy consulting yields.

1. Project & Operating Inputs

Data Center IT Load (Megawatts - MW e.g. 5.0 MW Enterprise Facility)

Chilled Water Supply Reset (deg F e.g. 55.0 deg F Elevated Supply Temp)

Annual Chiller & Economizer Energy Bill Savings ($ / Yr e.g. $285,000)

Turnkey Rack Sensor Mesh, BMS Optimization Software & Commissioning ($)

2. Financial Breakdown & Yield

ASHRAE TC 9.9 THERMAL GUIDELINES

Annual Data Center Free-Cooling Energy Profit

PUE Optimization Consulting Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Direct Cost