What experts say about Regenerative Dual DuctTM/SM technology and Lentz Engineering:
'…uses far less active cooling resources than the traditional VAV system under all of the cases investigated, with VAV systems requiring up to 2.3 times the active cooling resource…' Dr. Stanley Mumma, Ph. D., PE, Fellow ASHRAE
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President Mark Lentz

Mark LentzMARK S. LENTZ, P.E., CDT

President of Lentz Engineering Associates, Inc.

EDUCATION

1978 University of Wisconsin - Madison Bachelor of Science, Mechanical Engineering (BSME)

LICENSES AND CERTIFICATIONS

Registered Professional Engineer (PE): Alaska (ME-7400), Massachusetts (33765), Michigan (41736), Minnesota (16713), New Jersey (GE-33274), Wisconsin (E-20272).

Certified Arctic Designer: Authorized to practice in arctic regions by the State of Alaska, Depart­ment of Commerce and Economic Development, Division of Occupational Licensing, Board of Architects, Engineers and Land Surveyors.

Certified Construction Documents Technologist (CDT): Certified by examination by the Construction Specifications Institute.

AREA OF SPECIALTY

Primary: Heating, Ventilation and Air Conditioning. Special emphasis has been placed on systems analysis, control theory and application, air-side processes, mechanical refrigeration and primary heat generation, energy conserving processes, and indoor air quality.

Secondary: Fire Protection and Plumbing.

EXPERIENCE

Professional work experience has been in the areas of mechanical engineering design for industrial, institutional and commercial facilities. Project types have included educational facilities, medical facilities, office buildings, laboratory facilities, industrial and manufacturing facilities, wastewater and water treatment facilities, material handling applications, hazardous material handling and disposal facilities, ice arenas, co-generation facilities, data processing and secure electronic environments.

Project responsibilities have varied from graphical preparation to systems conceptualization, life cycle cost analysis, computer simulation, equipment selection, preparation of technical specifications, preparation of contract documents, quality control, and construction supervision.

Administrative responsibilities have included acting as design team leader supervising subordinate engineering and graphics personnel on a project specific basis, and project management.

Corporate responsibilities have included performance troubleshooting, technical quality

control, standards development, and master specification development.

Expertise in multiple subject areas is recognized at the Society level by the American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. (ASHRAE) through active participation on multiple engineering technical committees and task groups, and through the Society Honors and Awards Program.

PROFESSIONAL SOCIETY MEMBERSHIPS

American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc.

Member Number: 0430872

National Fire Protection Association (NFPA)

Member Number: 000217000

National Association of Professional Engineers (NSPE)

Member Number: 104037048

PROFESSIONAL ACTIVITIES

AMERICAN SOCIETY OF HEATING, REFRIGERATING, AND AIR-CONDITIONING ENGINEERS, INC. (ASHRAE)

Positions Held and Responsibilities (Terms):

ASHRAE Program Committee (Society Standing Committee), Past Member, Presidential Appointee, (1989-1992):

* Liaison to Section 9 - Engineering Applications

* Member, Policy Subcommittee

* Member, SPO 4.3 Subcommittee

ASHRAE Technical Committee TC 5.7 - Evaporative Cooling.

* Current Status: Member (1992-present)

* Vice Chairman (2000-2002, 2002-2004)

* Corresponding Member, (1990-1992, 1996-1997, 2001-2002)

ASHRAE Task Group TG 9.MMB - Moisture Management in Buildings

* Current Status: Member (2001-Present)

ASHRAE Technical Committee TC 9.1 - Large Building Air-Conditioning Systems.

* Corresponding Member, (2006-Present)

ASHRAE Technical Committee TC 9.2 - Industrial Air-Conditioning

* Member, (1986-1990), (1992-1996),(1998-Present)

* Corresponding Member, (1990-1992)(1997-1998)

* Subcommittee Chairman for Standards, (1987-1989)

* Revisor, Chapter 14, Laboratories, 1991 ASHRAE Handbook, HVAC Systems and Applications.

* Revisor, Chapter 17, Data Processing, 1995 and1999 ASHRAE Handbook, HVAC Systems and Applications.

* Primary Author, Water, Waste Water, and Hazardous Materials Handling Facilities, 2003 ASHRAE Handbook, HVAC Systems and Applications.

* Member of Laboratory Systems Subcommittee until upgraded to Task Group status.

ASHRAE Technical Committee TC 9.7 - Educational Facilities.

* Member (Founding), (2005-Present)

ASHRAE Technical Committee TC 9.8 - Large Building Air-Conditioning Applications.

* Chairman, (1994-1997)

* Member, (1985-1989, 1993-1997, 2003-Present)

* Corresponding Member, (1989-1992, 1997- 2003)

* Revisor, Chapter 20, Places of Assembly, 1987 ASHRAE Handbook, HVAC Systems and Applications.

* Revisor, Chapter 4, Places of Assembly, 1991 ASHRAE Handbook, HVAC Systems and Applications.

* Coordinator and Revisor, Chapter 6, Educational Facilities, 1991 and 1999 ASHRAE Handbook, HVAC Systems and Applications.

* Liaison to SSPC 62.

ASHRAE Task Group TG-LS - Laboratory Systems.

* Member, (1993-1997)

ASHRAE Technical Committee TC 9.10 - Laboratory Systems.

* Member (Founding), (1993-1997)

* Corresponding Member, (1992-1993), (1998- Present)

ASHRAE SSPC 90.1 - Standard 90 Committee.

* Consultant, (1991-1993)

ASHRAE SSPC 62 - Standard 62 Committee.

* Member, Editorial Changes Subcommittee.

* Liaison from ASHRAE TC-9.8

Seminar Chairman, "Dynamics of Laboratory HVAC Systems," 1988, ASHRAE Winter Meeting, Dallas, Texas.

Seminar Chairman, "Trends in Laboratory HVAC Systems," 1987 ASHRAE Winter Meeting, New York, New York.

PRESENTATIONS, PUBLICATIONS, AND AWARDS

Presentations: "What Constitutes a "Green" HVAC System," 1999 ASHRAE Annual Meeting, Seattle, WA.

"Green Cooling System Design," 1999 ASHRAE Annual Meeting, Seattle, WA.

"Anatomy of a Green HVAC System Design," 1999 ASHRAE Annual Meeting, Seattle, WA.

"Reducing Energy Use in High Wet-Bulb Climates with Indirect Evaporative Cooling," 1998 ASHRAE Annual Meeting, Toronto, Ontario, Canada

"Energy Conservation in Humidified, 100% Outside Air Systems," 1998 ASHRAE Winter Meeting, San Francisco, CA.

"Choices to Make in Engineering Requirements for ASHRAE 62-1989 and IAQ Requirements," 1995 ASHRAE Winter Meeting, Chicago, IL

"Adiabatic Saturation and VAV: A Prescription For Comfort and Close Environmental Control," 1991 ASHRAE Winter Meeting, New York, New York.

"The Problems of Practical Application of Variable Volume Systems to Laboratories," November 16, 1990, Iowa State University Professional Development Seminar, Ames, Iowa.

"Understanding VAV in Laboratories," Wisconsin Environmental Balancing Bureau Recertification Seminar, December 2, 1988.

"A Procedure for Modeling Diversity in Laboratory VAV Systems," 1988 ASHRAE Winter Meeting, Dallas, Texas.

"Performance Characteristics of a Working Facility," 1987, ASHRAE Winter Meeting, New York, New York.

Publications: "A Procedure for Modeling Diversity in Laboratory VAV Systems," ASHRAE Transactions, Vol. 95, Part 1, 1989.

"Adiabatic Saturation and VAV: A Prescription For Comfort and Close Environmental Control," ASHRAE Transactions, Vol. 97, Part 1, 1991.

"Reducing Energy Usage in Laboratory HVAC," Specifying Engineer, Vol. 56, No. 3, September 1986.

Honors: Listed as a Significant Contributor to Chapter 20, 1987 ASHRAE Handbook, HVAC Systems and Applications.

Listed as a Significant Contributor to Chapter 6, Educational Facilities, and Chapter 14, Laboratories, 1991 ASHRAE Handbook, HVAC Systems and Applications.

Listed as a Significant Contributor to Chapter 4, Places of Assembly, Chapter 16, Data Processing, and Chapter 50, Evaporative Cooling, 1999 ASHRAE Handbook, HVAC Systems and Applications.

Marquis Who's Who Publications Board Listing:

* Who's Who in Science and Engineering.

* Who's Who in America.

Awards: ASHRAE Distinguished Service Award, 2001.

ASHRAE Symposium Paper of the Year, 1991.

ASHRAE Energy Awards Competition (Society), 2nd Place Energy Award, Category V, Alternative and/or Renewable Energy Resources, 1988.

ASHRAE Energy Awards Competition (Region VI), 1st Place Energy Award, Category V, Alternative and/or Renewable Energy Resources, 1987.

ASHRAE Energy Awards Competition (Wisconsin Chapter), 1st Place Energy Award, Category V, Alternative and/or Renewable Energy Resources, 1987.

ASHRAE Energy Awards Competition (Region VI), 2nd Place Energy Award, Category I, New Commercial, Institutional or Public Assembly Buildings, 1986.

ASHRAE Energy Awards Competition (Wisconsin Chapter), 2nd Place Energy Award, Category I, New Commercial, Institutional or Public Assembly Buildings, 1986.

Construction Specification Institute, Honorable Mention, Category G, Warehouses, Garages, etc., 1987.

Consulting Specifying Engineer Magazine, 2005 ARC (Advancing, Reinvigorating and Cultivating Excellence in Engineering) Award for HVAC Design, Wausau East High School.

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