BOC 1006

Credits: .7
Lecture: 6 hrs
Group Exercises: 1 hour
Total: 7 hrs

Prerequisites: None

Class Description: Participants will learn typical areas and problems with different system types and equipment and the relevant diagnostic tools and techniques to identify common opportunities that offer the greatest energy savings potential.

PROJECT: None

Learning Objectives:
At the completion of Common Opportunities for Low-Cost Operational Improvement a participant will be able to:

  1. Develop a building systems operations map.
  2. Schedule building systems and equipment, and implement operational strategies to limit equipment on-time.
  3. Identify critical control sensors in a building and recognize symptoms of sensor error.
  4. Identify control strategies and equipment faults that lead to excessive reheat and recool.
  5. Recognize common symptoms of simultaneous heating and cooling.
  6. Recognize symptoms of poor outside air control and look for typical problems.
  7. Understand concepts of common HVAC systems and how the design makes them prone to certain problems causing excessive energy use.
  8. Recall how loggers are used for energy profiling, estimating savings potential, and troubleshooting.
  9. Identify applications for loggers and analyze logger data for operating hours, temperatures, loading, and other parameters.
  10. Recall how logger data is used to estimate savings potential.

Textbook:
BOC 1006 – Common Opportunities for Low-Cost Operational Improvement Handbook, NEEC

Special Equipment for Instructors:

  • HOBO U12 Temp & RH data logger – @ $115 per logger
  • USB A-to-mini-B cable – @ $2-$10 per cable
  • HOBOware Pro software @$100 per license
  • 1 computer per student (optional).

Evaluation:
Test 100%

Class Outline

1. Introduction and overview

2. Three Key Practices

2.1. Developing a building system operations map
2.2. Using Energy Use Index (EUI) and benchmarking
2.3. Targeting HVAC systems and equipment

3. Equipment Scheduling

3.1. Lighting and plug loads
3.2. Fans and pumps
3.3. Chillers and boilers
3.4. Packaged equipment

4. Sensor Error

4.1. Types of error
4.2. Critical control sensors
4.3. Sensor issues in disguise

5. Simultaneous Heating and Cooling

5.1. Reheat and recool
5.2. Operational errors
5.3. Symptoms of simultaneous heating and cooling

6. Outside Air Usage

6.1. Review of code requirements for ventilation
6.2. Economizers
6.3. Demand controlled ventilation
6.4. Envelope issues
6.5. Symptoms of poor outside air control

7. HVAC Systems and Major Equipment

7.1. VAV with reheat
7.2. Constant Volume with Reheat
7.3. Dual duct
7.4. Multizone fan
7.5. Central AC with perimeter heating

8. Introduction to Data Loggers

8.1. Types of loggers
8.2. Applications

8.2.1. Cross-application with BAS
8.2.2. Trending
8.2.3. Troubleshooting
8.2.4. EUIs for end-use equipment

8.3. How to use data loggers

8.3.1. Software setting parameters and initiating the logger
8.3.2. Deployment and recording measurements
8.3.3. Graphing and analyzing measurements

8.3.3.1. Graphing tools
8.3.3.2. Exporting data to spreadsheets

8.4. Application Examples

8.4.1. Safety Guidelines
8.4.2. Night setback
8.4.3. Peak demand
8.4.4. Economizer operation