Energy optimisation project

45,000 sq.ft. Grocery Store

Retail

The total cooling capacity of the Medium and Low Temperature System is approximately 1,000,000 BTU and historically consumed approximately 950,000 kWh of electricity per year prior to the enhanced recommissioning performed

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~16% energy saving

Reduced power consumption with 123,000kWh per year

Variable Capacity Compressor Upgrade M&V Report for a Refrigeration System at a 45,000 Sq.Ft Grocery Store in Southwestern Ontario

The following contains a complete Variable Capacity Compressor Upgrade Measurement and Verification Report including synopsis of the data obtained throughout the baseline and post implementation periods for the Project Phases for a Refrigeration System located at a 45,000 Sq.Ft Grocery Store in Southwestern Ontario. All information contained in this Report also meets the requirements of the saveONenergy Equipment Replacement Incentive Initiative (ERII) program for Refrigeration Systems in Ontario.

Background and work completed to date:

The analyzed Refrigeration System, which is over 20 years old, consists of a Medium and Low Temperature System (Total 164 HP) and operates with 10 Semi-Hermetic Copeland Compressors. The total cooling capacity of the Medium and Low Temperature System is approximately 1,000,000 BTU and historically consumed approximately 950,000 kWh of electricity per year prior to the enhanced recommissioning performed in February 2013. Through the enhanced recommissioning process a number of Energy Efficiency Measure (EEMs) have been implemented predominantly in the form of adjustments. These
adjustments were intended to improve the System’s stability while reducing energy use at the lowest possible cost within a short period of time. The implementation EEMs were considered to be no-cost/lowcost measures utilizing the existing Service and Maintenance Budget and produced an operational energy saving of approximately 173,000 kWh (approximately 18% energy savings). This reduced the annual operation to approximately 777,000 kWh of electricity per year. This operational condition formed the new optimized system baseline with which future capital based implementations would be measured.
These EEMs were covered under previous Ontario Power Authority (OPA) ERII Incentive Applications and approximately twenty thousand ($20,000.00) dollars of incentives have already been received by the Grocery Store for this work.

Goal of this Demonstration Project:

The goal of this Demonstration Project was to analyze the Medium and Low Temperature Racks (hereafter the “Refrigeration System” or “System”) at the Grocery Store in order to determine the impact of retrofitting each Rack by replacing one (1) 15 HP Semi-Hermetic Compressor with one (1) Semi-Hermetic
Variable Capacity Copeland Digital Discus Compressor.

With the installation of the Variable Capacity Copeland Digital Discus Compressors in place (hereafter referred to as the Post-Implementation Period), the Refrigeration System operation consumed significantly less power at all outdoor temperatures and significant preliminary energy savings were achieved. The estimated yearly energy consumption of the Refrigeration System is now approximately 654,000 kWh which represents an energy saving of approximately 123,000kWh per year (approximately 16% energy saving)

Full report and with more information.

Project details

Location: 45,000 sq.ft. Grocery Store Southwestern Ontario
System: The analyzed Refrigeration System, which is over 20 years old, consists of a Medium and Low Temperature System (Total 164 HP) and operates with 10 Semi-Hermetic Copeland Compressors.
Prepared by: Renteknik Group Inc.

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