200 Rue Montcalm Gatineau, Quebec, Canada
A pilot of EndoTherm was run by Multivesco at 200 Rue Montcalm in Gatineau after recommendation from WSP’s team in Ottawa. This modern, glass fronted Class A office is heated and cooled by a two-pipe heat pump system. This means EndoTherm will provide improvements in heat transfer throughout the heating and cooling season. The product was installed into Tower 1 which takes up 60% of total electrical consumption of the site.
The site is not sub-metered and thus the total consumption includes other electrical loads such as lighting / computers. This baseload (none-HVAC consumption) will be identified as part of the analysis. 60L of EndoTherm was installed into the system in January 2019.
The measurement & verification is based on the ‘International Protocol for the Measurement & Verification of Performance (IPMVP).’ Historical data was supplied by WSP/Multivesco over the past 2 years. This did include some estimated data which was eliminated from consideration. The consumption data was normalized using Heating & Cooling Degree Data from the nearby weather station at Gatineau Airport at a baseload of 18.5°C.
The billing data for April/May and May/June was estimated data. Thus the meter reading taken on the 31st July 2019 suggests that this estimate was on the low end as the value for June – July was higher. If you average these three months there is a saving compared to similar months in previous years.
The final time monthly period runs from the 23rd June – 31st July runs for 38 days. This is seven days more than the rest of the monthly periods and thus the non-electrical baseload will be increased. To reflect this the baseload will be increased from 293,403kWh to 359,655kWh.
The predicted consumption is calculated by inputting the combined HDD+CDD into the line of best fit equation y= 317.7x + 293,403. This is compared with the predicted consumption to calculate the saving during the time period.
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Over the 6-month pilot period the actual consumption was 259,668kWh lower than the predicted consumption. This is a 9.7% reduction in consumption. It is worth noting that the baseload (293,403kWh) for each month is roughly 50% of the total consumption thus cooling accounts for only 50% of total consumption. This would make the HVAC saving 19.4%. As EndoTherm was only installed into Tower 1 (60%) the saving is therefore 11.64%
This is higher than the average saving achieved by EndoTherm over the past 5 years and can most likely be accounted for by variance in other electrical consumption on site. At 4.5c/kWh this is a saving of $7,011. This also confirms that the product investment has a typical ROI within 1 year.
Each kWh saving is also a reduction of CO2e. The total saving is equivalent to 110,400kg (110.4 metric tonnes) of CO2e.