About this presentation

related to ATMOsphere America 2014
published on 18 June 2014
18 pages
1 MB

In a joint presentation Dan O-Brian from Zero Zone and Tom Wolgamot from DC Engineering present on the advantages of CO₂ systems versus HFC DX systems. They compare three similar sized Whole Foods stores, one with a CO2/R407A system, one with a DX LT/Glycol system, and one with a distributed system.

About the speaker(s)

Tom Wolgamot

 

Tom Wolgamot is a Principal of DC Engineering and works out of Missoula, Montana. He is a licensed PE in eighteen states, and has over 25 years of experience in facility engineering and project management. Tom has led a wide variety of design work from commercial HVAC to campus heating and cooling plants. Tom currently is active on two ASHRAE Refrigeration Technical Committees; 10.1 Custom Engineered Refrigeration Systems and 10.8 Refrigeration Load Calculations.

He really enjoys working in the supermarket refrigeration sector and is proud to be contributing to the industry with a focus on sustainable practices. The heightened interest in reducing carbon footprints through energy efficiency, commissioning, and alternative refrigerants has been especially rewarding. Prior to providing consulting services, Tom was the Director of Engineering for Albertsons, Inc. where he developed the appreciation and skills for balancing fiscal realities with on-going maintenance, energy, and environmental requirements.

Dan O'Brien

 

Dan has a B.S. in Mechanical Engineering from Michigan Technological University and an MBA from the University of Minnesota. Dan has worked for Zero Zone for almost 20 years and has held various positions within the company from engineering to operations and most recently sales management. Dan has a strong background in custom refrigeration systems for supermarkets, cold storage and processing plants. With his background in engineering, manufacturing and construction, Dan uses his knowledge to help customers in the supermarket industry in finding unique solutions to their refrigeration needs. Dan’s customer-focused attitude has helped many retailers deal with the complex issue of refrigerants. He has utilized his experience and engineering background to develop solutions to reduce refrigerant charge and to develop equipment that can support customers' sustainability goals.