Chris Muller is Technical Director for Purafil, Inc. (Doraville, Georgia USA) with responsibilities for technical support services and various research and development functions. He also serves as their Global Mission Critical Technology Manager responsible for Purafil’s data center business development program. Prior to joining Purafil, he worked in the chemical process and pharmaceutical manufacturing industries in plant management and quality assurance/quality control.
He has written and spoken extensively on the subject of environmental air quality and the application and use of gas-phase air filtration, corrosion control and monitoring, electronic equipment reliability, and RoHS and counts over 125 articles and peer-reviewed papers, more than 100 seminars, and 8 handbooks to his credit. Mr. Muller has edited chapters in two handbooks on the application and use of gas-phase air filtration, wrote the chapter on contamination control in the ASHRAE Datacom Series Handbook – Particulate and Gaseous Contamination in Datacom Environments, wrote the chapter on gas-phase air filtration in the NAFA Air Filtration Handbook and the chapter on airborne molecular contamination in the Semiconductor Manufacturing Handbook published by McGraw-Hill.
He has testified before OSHA on a proposed Indoor Air Quality Standard and has consulted on the preparation of Dutch and Italian governmental standards for indoor environments and has worked closely with many state and national agencies in the U.S. and abroad to develop and implement indoor environmental control strategies for airborne contaminants.
He is one of only a handful of ASHRAE members named as a Distinguished Lecturer and is a frequent speaker at ASHRAE Chapter and Regional meetings both domestically and abroad. He has received ASHRAE’s Distinguished Service Award. He was a member of the International Scientific Committee for the ASHRAE IAQ Conference Malaysia 2010: Airborne Infection Control – Ventilation, IAQ & Energy. He also served on the Scientific Program Committee (SPC) of the Environmental Health 2013 Conference (Basel, Switzerland).
He is a voting member of ASHRAE’s Standing Standard Project Committee (SSPC) 62.1 – Ventilation for Acceptable Indoor Air Quality, serves on the Education subcommittee, and is a co-author of the Standard 62.1 User’s Manual. He is also a voting member of Technical Committee 2.3 – Gaseous Air Contaminants and Gas Contaminant Removal Equipment and a corresponding member for Technical Committee 9.9 – Mission Critical Facilities, Technology Spaces and Electronic Equipment. He is also a corresponding member of Technical Committee 9.11 – Clean Spaces. He is the former Chair of SSPC 145 which published the first industry standards for assessing the performance of media and equipment used in gas phase air filtration systems.
Muller is the chair of the International Society of Automation (ISA) 71 committee on Environmental Conditions for Process Measurement and Control Systems and was responsible for updating Standard 71.04 on Airborne Contaminants to account for the changes in electronic equipment and their reliability brought about by global “lead-free” manufacturing regulations.
He serves on the Yield Enhancement Technical Working Group and the Wafer Environment Contamination Control (WEEC) subgroup for the 2015 update to the International Technology Roadmap for Semiconductors (ITRS).
Other memberships include:
- Institute of Environmental Sciences (IEST) – Senior Member and a member of the Senior Faculty of the IEST Contamination Control Institute. Willis J. Whitfield Award for contributions on airborne molecular contamination (AMC) control. He is member of Working Groups CC 008 (Gas Phase Adsorber Cells), CC 012 (Cleanroom Environments), and CC 035 (Design Considerations for Airborne Molecular Contamination Filtration Systems).
- International Standards Organization (ISO) – Technical Committee 142: Working Group 8 on Gas-Phase Air Cleaning Devices for General Ventilation and Technical Committee 156: Corrosion of Metals and Alloys.
- American Institute for Conservation of Historic and Artistic Works (AIC) – Research and Technical Studies specialty group.
- American Society for Testing and Materials (ASTM) – Committee D22.05 on Indoor Air and Committee D.28.04 on Activated Carbon.
- Air & Waste Management Association (A&WMA) – Indoor Air Quality Committee.
- International Society of Indoor Air Quality and Climate (ISIAQ) – Task Force III on Indoor Air Quality in Museums.
- Surface Mount Technology Association (SMTA)
- Technical Association of the Pulp & Paper Industry (TAPPI)
He received his B.S. in Applied Biology with a minor in Chemistry from Georgia Tech and has done postgraduate work in Industrial Engineering.
This presentation will cover: Air quality standards for datacom environments, updates on ongoing environmental concerns, an overview of free cooling with respect to issues affecting electronic equipment reliability, and free cooling case studies with and without application of contamination assessment, control, and monitoring programs.
Fortunately, air cleaning technologies have evolved to the point that there are effective and economical options for providing a healthy, comfortable indoor environment. Further, ventilation standards, mechanical codes, and building rating systems have similarly evolved with an eye on indoor air quality and how best to achieve an acceptable indoor environment.
Enhanced air cleaning is being used to provide and maintain acceptable IAQ in commercial buildings for the control of particulate pollutants, and increasingly so for the control of gaseous pollutants given the many options now available. Employing enhanced air filtration systems as an integral part of an HVAC system can effectively reduce airborne contaminants to well below standard levels, but effective control of environmental pollutants requires the use of a filtration system optimized for both particulate and gaseous pollutant removal. Use in either recirculation or mixed recirculation and outdoor air systems is effective for controlling undesirable contaminants and has the potential for conserving energy.
The acceptance and use of these enhanced air cleaning technologies is being noticed by standards writing bodies inasmuch that there are requirements for enhanced air cleaning where outdoor ventilation does not meet national air quality standards. Further, the use of standard testing for the evaluation of gas-phase air filtration media and devices has become a requirement ASHRAE 62.1: Ventilation for Acceptable Air Quality. Similarly LEED pilot credit EQpc68: Indoor air quality procedure also requires these use of standard testing in its application.
This presentation will present an overview of ambient air quality standards, what contaminants are being measured, and what criteria are used to determine acceptability. Examples of local air quality data will be provided along with a discussion of suitable air cleaning technologies. This will include some of the more effective air cleaning options available today as well as some of the more promising emerging technologies. Cost considerations will be presented along with the potential energy savings possible allowed with existing ventilation standards.
An improved filter medium provides for improved control of nitrogen oxides (NOx). Application of this and other media types into a nonwoven fiber matrix provide higher removal efficiencies and lower pressure drops than traditional air cleaning systems and can also be produced with integral particulate filtration for more complete control of automobile and diesel exhaust emissions.
Revisions to Standard 62.1 have caused some confusion in its use and the application of energy conservation measures. This presentation will discuss the current status of the Indoor Air Quality Procedure, review the applicable provisions of the Standard, discuss indoor air quality models in use, and provide examples where the IAQ Procedure has been successfully employed as part of an energy conservation program. There will also be a discussion of current activities to make it easier to validate the IAQ Procedure and make it more useful to the engineering community when designing “net zero” energy buildings.
The results of a field study are presented to demonstrate to users of the ASHRAE Standard 62.1 Indoor Air Quality method that FAC treated air can meet or exceed the anticipated quality level of outdoor dilution air. These data will also a valuable information resource for standards writing bodies and code officials who are faced with the converging needs for assuring sustained or enhanced indoor environmental quality while reducing energy demand.