Abstract: Energy Efficiency and Direct Digital Control

EMCS User Interface

The overall impact of a DDC system upon the energy efficiency of a research laboratory is considerable and includes a broad range of positive benefits. Some impacts have a direct energy influence, e.g., precise temperature control, while others have indirect energy consequences, e.g., consumption reporting. While the structure/architecture of the DDC system is very important, the energy engineer should give greater consideration to the operator interface, called the Person/Machine Interface (PMI). There are particular advantages that the distributed DDC system has over a pneumatic system and individual controllers. The building of a comprehensive sequence of operations is the first step in the implementation of the laboratory Energy Monitoring and Control System (EMCS). Depending upon budget and scope constraints, a DDC system can provide the core of a growing, flexible system that can provide Total Laboratory Energy Management (TLEM) which is further described in Section 4.4, below. A highlighting of DDC advantages and benefits follows:

·Centralized User Interface

·Dynamic, Precise Facility Control

·Coordination of Facility Systems Operation

·Speed and Reliability from Computational Power

·Optimizing Facility Diversity

·Durability and Flexibility

·Troubleshooting/Easing of maintenance

·Trending and History Data Logging

·Customized Energy Reporting

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