BOC 2002

Optimizing HVAC Controls for Energy Efficiency

Credits:  1
Lecture:  3 hrs
Test & Project:  4 hrs
Group Exercises:  3 hrs
Total:  10 hrs

Prerequisites: BOC 2001 or equivalent

Class Description: In this one-day class, participants will learn about strategies for controlling the operation of HVAC systems to improve building comfort and energy efficiency. Topics include optimization strategies, reviewing and writing sequences of operation (SoO) for HVAC system components, procedures for functionally testing the control system, and future trends in building controls. A combination of lecture, class discussion, and small group activities will prepare operators to write a SoO for an HVAC system in their building and to develop a procedure for testing the control system. One day.

Project Assignment: Select an HVAC component in your building (RTU, AHU, Boiler, chiller) and write the Sequence of Operation in all operating modes. Write a functional test procedure to verify the equipment is operating per the Sequence of Operation. Test Procedure

Texts:

BOC 2002 Student Handbook
BOC Level II Project Workbook

Learning Objectives:

  • Describe control strategies for optimizing system performance
  • Write the sequence of operation (SOO) for typical HVAC system components
  • Describe the procedure for functionally testing the control system
  • Identify future trends in building control systems
  • Prepare to complete the 2002 project assignment

Outline:

Introduction, warm up activity & agenda

Control System Review – components, control actions, and system documents

  • Activity 1 – Identify and list the sensors, controllers, and controlled devices for an Air Handling Unit

Control System Optimization – Equipment scheduling, Setpoints, Reset strategies, Ventilation & economizer, Distribution systems (fans & pumps)

  • Activity 2 – Using the SOO for a sample package rooftop unit (provided) identify energy saving optimization strategies.

Control Sequence of Operation – Definitions, Modes of Operation, Applicable systems and components

  • Class Discussion Activity: Sample SoO for restroom exhaust fan
  • Activity 3 – Sequence of Operation – Identify and list the possible operating modes, Write the sequence of operation for two systems during each operating mode.

Troubleshooting & Testing Controls – Functional Test Procedures, Trend logs, Data loggers, Diagnostic tools, Control system maintenance

  • Activity 4 – In groups write the functional test procedure for single zone, constant volume system
  • Classroom activity: Using the example package unit SOO what type of fault diagnostics would be useful to maintain peak system operating efficiency

The Future of Building Control Systems – Fault diagnostics & continuous commissioning, Machine based learning/self-tuning, Autonomous operations “The Autonomous Driving Building”, Internet of Things

  • Activity 5 – What does the future mean for you and your building?

BOC 2002 Project Assignment Review

BOC 2002 Test