Example Measurement & Verification Plan for a Super espc project

6.1 
Example M&V Plan 
The following figure will help illustrate the savings verification process: 
Figure 5-1 
Chiller Performance and Savings 
400 
kW New 
kW Baseline 
ASHRAE model for 
baseline chiller 
kW measured 
2. Estimate baseline chiller 
300 
1. Measure chiller load and 
operating conditions. 
demand at standard conditions. 
Manufacturer's model for 
new chiller 
4. Calculate kW reduction as 
difference between baseline 
and measured values. 
200 
kW 
3. Measure the new chiller
demand.
100 
0
0 
100 
200 
300 
400
Tons 
1. Measure the chiller load (tons) from the chilled water supply and return temperatures 
and flow rates. 
2. Estimate the baseline kW demand from the model of the old chiller at current 
operating conditions (actual chilled water temperature, tons). The baseline condenser 
water temperature will be held 85ºF since that was the steady-state case in the 
baseline due to the old chiller’s operating limitations).
3. Measure the new chiller demand under actual operating conditions.
4. Calculate the demand savings for each 15-minute interval as the difference between 
the baseline model and the measured value.
5. If the chiller is off, demand reduction is treated as 0 kW.
6. Annual energy savings will be calculated as the sum of the 15-minute savings. This 
savings calculation assumes a minimum number of ton-hours of cooling per year. In 
the event that the measured ton-hours are less than a specified minimum, savings 
based on measured chiller performance may be adjusted upwards to reflect what 
would have occurred had the minimum number of ton-hours been provided.
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