TEMPERATURE CONTROL SYSTEMS:

Why Don’t They Work ?

WHAT WENT WRONG?

WILLIAM J. COADCOAD ENGINEERING

Where We’ve Arrived:

• Digital control has replaced analog control with few exceptions

• In the very near future, the “exceptions” will have been removed

• Hardware is continually improving in reliability and capacity and decreasing in cost

Where We’ve Arrived:

• As a percentage of cost, software development, custom programming and commissioning have become much more significant than hardware

• Many companies have seriously underestimated the need for and the cost of custom programming and system commissioning. As a result, most systems have failed to perform to their capability.

Benefits of Digital Controls

1. They are information rich

2. They are infinitely flexible

3. They are expandable

The Solutions

Eric UttersonThe Role of the Consulting Engineer

Harry DemetruliasThe Role of the T. C. Contractor

Jim StueberFrom an Owner’s Perspective

Jay SantosControls Commissioning