Xi’an Commercial Energy Audit

Sector: Commercial Year: 2023 City: Xi’an, Shaanxi Province, China Gross Floor Area (GFA): 143,700 sqm Scope: Energy Audit Level 2 (ASHRAE)

This ASHRAE Level 2 audit of a large commercial facility in Xi’an provided a phased roadmap for energy efficiency upgrades. The strategy focuses on securing immediate operational savings in Phase I, deploying deeper retrofits in Phase II, and planning long-term plant redesign measures in Phase III.

Phase I — Quick Wins

Chiller Setting Adaptation
Filter Replacement
Occupancy Sensors
Lighting Timers
Faucet Aerators

Phase II — Advanced ECMs

Window Film for South Glazed Façade
Window Film for Skylight
Flue Gas Condenser
VFDs for Pumps
Optispeed Drive for Chillers
BMS Upgrade
VFD for Cooling Tower Fans

Phase III — Major Redesign

Rooftop Solar PV
Free Cooling System
Heat Pump Heat Generator

Estimated Savings: 11% energy savings Carbon Reduction: 19% site reduction Payback Period: 1.2 – 7.3 years