BMS optimisation

Services provided

BMS and eSight Monitoring and Targeting System Optimisation

Benefits achieved

Substantial energy savings, more effective energy management with knowledge embedded in the team to apply learnings elsewhere.

Summary

University of Leeds was founded in 1904 and is one of the largest higher education institutions in the UK It has a sustainability strategy and ensures that sustainability is embedded in its decision making with social, environmental and economic impacts considered in its procurement process and all major developments and investment.

The University has one of the largest and most complex Building Management Systems (BMS) in the UK and wanted to ensure that it was minimising the consumption of energy and associated carbon emissions As an enabling measure, it also needed to improve the use of its eSight Energy Monitoring & Targeting System.

JRP was commissioned to carry out a BMS Health Check That is a forensic review of the graphical head-end terminal of the BMS to determine the overall efficiency of the system - including control strategy, set-points, time schedules, weather compensation, sensor accuracy, graphics accuracy and usability of the system, day to day operation and maintenance This led to the following work to capitalise on the potential energy savings revealed:

• Review effectiveness of eSight M&T system
• Identify buildings most in need of BMS optimisation
• BMS optimisation investigations of three such buildings

Results

The BMS Health Check covered the HVAC systems in 14 of the main campus buildings and identified opportunities for major energy cost savings. Problems identified include: • Thermal wheel heat recovery systems not working • Faulty or inaccurate temperature sensors • Heating and cooling systems fighting each other due to poor tuning of control loops • Heating and cooling control valves passing when in closed position

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