Speaker: Zahid Ayub, Ph.D., P.E.

President
Isotherm, Inc.
817.472.9922 office
817.472.5878 fax
7401 Commercial Blvd.East
Arlington, Texas 76001
Isotherm, Inc. is a manufacturer of heat transfer equipment
- Ph.D. in mechanical engineering from Iowa State University
- Designed and fabricated several thousand heat exchangers/pressure vessels installed globally
- Recognized as one of the pioneers in the field of Ammonia Enhanced Heat Transfer
- Author of over seventy International Journal and Conference papers
- Holds six United States patents and several in process
- Recipient of Michigan New Product Award – 1989
- ASHRAE Distinguished Service Award – 1999
- ASHRAE Research Service Award – 2007
- ASHRAE Fellow 2008
- ASME Fellow – 1998
- Member, Scientific Council – International Center for Heat and Mass Transfer representing United States
- Registered Professional Engineer in the States of Michigan and Texas
- Active member of ASME, ASHRAE, IIAR, AIChE, IoR (UK), IIR, RETA, Eurammon
- Served on ASHRAE RAC, Refrigeration Committee (Chair)
- Currently serves on RAP, TC1.3 and TC8.5
- Adjunct Professor – University of Texas-Arlington
- Member – International Advisory Board, GIK Institute, Pakistan
- Founder and Director, Natural Fluids Refrigeration Center, GIKI, Pakistan
- Past Technology Editor for the International Journal of Enhanced Heat Transfer
- Currently Executive Editor of the Journal of Heat Transfer Engineering
- Reviewer to several Heat Transfer Journals
Program: Natural Refrigerants
Executive Summary:
Driven by international agreements such as the Montreal and Kyoto protocols (UNEP
1999 and United Nations 1998) as well as a desire for a higher degree of sustainability,
there is a renewed interest in increasing the application of natural refrigerants. The class
of refrigerants commonly referred to as “natural refrigerants” offers the potential to
improve the environmental performance of refrigeration systems. Because of its
alignment with sustainability initiatives, ASHRAE supports research, assessment, and
strategic growth in the use of natural refrigerants such as ammonia, carbon dioxide,
hydrocarbons, air and water in refrigeration systems and technologies.
Taking a leadership role means ASHRAE and its members will continue to extend the
scope of refrigeration and air conditioning technology by conducting research,
disseminating knowledge, developing standards and guidelines, and promoting the
responsible use of sustainable refrigerants. Several technical committees within
ASHRAE are committed to achieve this goal. Limited research has been undertaken
within a few ASHRAE technical committees during the past decade with most efforts
focused on ammonia and carbon dioxide.
In light of the current global scenario, ASHRAE’s response to the demand for
environmental sustainability is to promote the development of systems which use natural
refrigerants safely, economically and efficiently.



