Using Benchmarking to Identify Energy Efficiency Opportunity in Cleanrooms: The Labs21 Approach

William Tschudi, Lawrence Berkeley National Laboratory

Objectives:

The objective is to show how energy benchmarking can identify better practices and more efficient system designs in cleanrooms. This will cover retrofit improvements as well as new construction using benchmarks to set operational targets. Individual systems performance will be used to identify better performing systems and their attributes. The concept of using measured performance to aid in establishing design and operational goals will be suggested.

Findings:

I will present benchmark results for at least fourteen cleanrooms and discuss use of the data to identify best practices for selected systems and operating metrics. This will include air systems, chilled water systems, air change rates, etc.

To improve the performance of new systems, minimum energy performance targets are suggested that are based upon attainable, measured performance in existing cleanrooms. The results will show that metrics can be utilized to compare the performance of various system configurations used to support a variety of manufacturing or research processes.

Labs21 Connection:

The benchmark results presented here reflect a number of Labs 21 approach items. These include:

• Setting voluntary goals - based upon benchmark guidance.
• Assessing buildings from a "whole buildings" approach.
• Providing operational data to assist in more accurate life-cycle cost evaluations.
• Identifying a range of energy efficiency strategies.
• Measuring energy consumption.
• Promoting energy efficiency efforts.

Biography:

William Tschudi is a Principal Investigator for the Applications Team in the Environmental Energy Technologies Division at Lawrence Berkeley National Laboratory. The applications team is tasked with bridging researchers and real world application of emerging technology. Mr. Tschudi is a licensed mechanical engineer with over 30 years of experience in design of high tech facilities, and industrial and power plants. Prior to joining LBNL, Mr. Tschudi managed multi-disciplined engineering offices for leading firms in design of clean room facilities and was a project manager for cleanroom design projects. Prior experience includes engineering management for industrial and power projects. Mr. Tschudi currently leads LBNL's cleanroom and data center energy efficiency projects and is a member of the ASHRAE TC 9.11 technical committee on clean spaces.