Week 6 The Energy Walk Through

Possible elements of a walk through Understand on-site information collection and listing of essential data for collection Conduct interview of building owners and users regarding their procedures, concerns and needs, including maintenance schedules and problems, building uses, renovation plans and age of equipment Visit all areas of building necessary for audit including mechanical rooms, primary heating and cooling sources, and lighting systems Obtain specifications for all equipment including chillers, boilers, pumps and control system balance settings, along with lighting fixture counts and types Become familiar with clients’ electronic energy management systems Review of safety procedures appropriate to an energy audit in a commercial or industrial building Obtain specifications for all equipment including chillers, boilers, pumps and control system balance settings, along with lighting fixture counts and types Become familiar with clients’ energy management systems Review of safety procedures appropriate to an energy audit in a commercial or industrial building

CATEGORIES OF ENERGY AUDIT AND ENGINEERING ANALYSIS As result of various needs of building owner, the levels of analysis are organized into the following categories: 1.Preliminary Energy Use Analysis 2.Level I Analysis – Walk-Through Analysis 3.Level II Analysis – Energy Survey and Analysis 4.Level III Analysis – Detailed Analysis of Capital Intensive Modifications

LEVEL I ANALYSIS – WALK THROUGH SERVICE -DETAILS 1. Complete steps of a Preliminary Audit. 2. Potential Owner Interface and Information Facility Managers - Compare drawing to actual facility conditions, ask about equipment replacement plans, maintenance procedures, effectiveness of previous energy conservation projects, operation and schedule of equipment and facilities.

LEVEL I ANALYSIS – WALK THROUGH SERVICE -DETAILS 3. Existing Building Survey Information - Review drawings and documentation Envelope components (Wall Roof, Floor, Windows, Doors, Skylights, etc.) HVAC Systems equipment components and control strategies Lighting fixture types and controls Other energy usage systems Occupancy information

LEVEL I ANALYSIS – WALK THROUGH SERVICE -DETAILS 4. Identify savings and cost analysis for low cost/no cost measures Lighting retrofits having fastest payback Better controls systems or strategies Obvious energy wasting operation (i.e. malfunctioning equipment, simultaneous heating and cooling) Include utility rebates in cost analysis

LEVEL I ANALYSIS – WALK THROUGH SERVICE -DETAILS 5. Provide a list of potential capital improvement measures (further analysis required) Building envelope feature (i.e. tinting or insulated windows, better roof insulation) HVAC retrofits including higher efficiency equipment, VFD for fans and pumps, improved building automation controls) Lighting retrofit requiring significant investment such as LED light sources, high bay and light poles.

LEVEL I ANALYSIS – WALK THROUGH SERVICE - REPORT 1. Provide description of facility, occupancy, usage and floor area. 2. Present Summary Table / Graph of Utility Bills Annual totals per fuel, average cost ($/unit) and cost per sq. ft. floor area 3. Quantify savings potential of changing eligible alternate fuel rate structures. 4. Present results of Energy Star Target Finder

LEVEL I ANALYSIS – WALK THROUGH SERVICE - REPORT 5. Summary of special problems or needs identified for operational or maintenance procedures. 6. Preliminary end use energy breakdown estimate of major energy using components of the building.

LEVEL I ANALYSIS – WALK THROUGH SERVICE - REPORT 7. List of low cost/no cost savings estimate of energy savings. 8. List of potential capital improvement projects with initial estimate of energy savings and installation costs.