Enwave was looking for a solution to serve as a “thermal well” filled with 8.5 million litres of Lake Ontario water to heat and cool downtown buildings. To employ low-carbon heating/cooling system to provide energy to buildings. Enwave wanted a solution to control the temperature of a large tank that is fed by the deep lake water cooling (DLWC) to store energy at night to ease stain on the electricity grid and reduce cost.

Siemens Service experts supplied, installed and commissioned the following equipment:    

• SIMATIC PCS 7 V9.0 SP2
• SIMATIC IPC hardware for standalone Operator station
• CPU 410E with PA network to connect the instrumentation and actuators
• Modbus RTU interface connected to the chiller units
• BAcNET interface connected with the BT system
• S7-1200 PLC to transmit data to the Customer’s iFIX SCADA System
• Instrumentation for Flow, Pressure, Temperature and level connect on the Profibus PA network using AFD
• SITRANS TO500 - multipoint temperature transmitter for measuring temperatures and temperature profiles with fiber-optic multipoint measuring lances for the Thermal energy storage tank
• HMI screen for local operation and monitoring

Enwave is the leading core-competency district energy operator in North America. The Well is a visionary mixed-use development featuring more than 3 million square feet of office and residential space. As part of the development, Enwave invested in an innovative thermal battery that creates and stores energy at night, leveraging off-peak costs. The green and clean technology expands the Deep Lake Water Cooling system to support growth in Toronto’s west end. It also supplies a high-efficiency hot water network to deliver efficient, resilient heating and cooling to The Well and nearby communities.