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Commercial building audits (Energy applications (Processes (refrigerators,…
Commercial building audits
Objectives
Provide best audit practices
Provide standarized base for auditors
Assist in choosing audit type
Contribute to give audits an energy management approach (what is required before and after audits)
Energy applications
Processes (refrigerators, laundries, kitchens)
Hot water (water services)
Transportation (escalators, lifts)
Controlling factors affecting environment inside building
Lighting
HVAC systems
Electronic equipments
Definitions
Accuracy
Broad estimates (based in energy consumption data and similar projects
Medium: based in data and operations. Capital is estimated as a result of what is required for implementing energy savings
High: energy analysis as audit type 3, using additional data, capital costs related to detailed quotations of equipments
Audit objet
Processes
Building
Site
Equipments
Transport or services
Benchmarking
Compare data to similar processes in the same building
Engineering calculation or modeling
Comparing to manufacturer´s manuals
Comparing to best available technology
Published studies
Boundaries (physical or by processes)
When to perform audits
Change in regulations
Change in energy costs
Change in processes
Site refurbishments
Change in fuels
Change in technologies
Change in energy performance indicators
Requirement
Accuracy
Consistent with boundaries, scope and objectives
Traceability of methos used
Provide energy performance improvements