🌡️ ASHRAE TC 9.9 (A1-A4 Envelopes, 18°-27°C Inlet, Server Delta-T 12°-18°C)

Server Rack ASHRAE TC 9.9 Thermal Envelope Calculator

Model server rack front-inlet environmental parameters against ASHRAE TC 9.9 Recommended Class A1 to A4 Thermal Envelopes ($18^circ ext{C to }27^circ ext{C}$ dry bulb, 5.5°C DP): calculate server airflow temperature rise ($Delta T = 12^circ ext{C to }18^circ ext{C}$), optimize CRAC economizer setpoints, and hyperscale cooling power yields.

1. Project & Operating Inputs

Total IT Server Load (MW e.g. 5.0 MW High-Density Data Hall)

Inlet Air Temp Setpoint (°C e.g. 24.0°C Elevated Economizer Setpoint)

Annual Customer Chiller Power Savings ($ / Yr e.g. $185,000 / Yr)

Turnkey Containment Curtains, Blanking Panels, Thermal Sensor Array ($)

2. Financial Breakdown & Yield

ASHRAE TC 9.9 ENVELOPE

Annual Data Center Cooling Energy Savings Profit

Data Center Thermal Efficiency Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Direct Cost