Portland Engineer Breakfast: – Compressors and Refrigerants for Chillers & The VRF Market

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Date(s) - 10/04/2017
7:30 am - 12:00 pm

Downtown Portland Hilton


Compressors and Refrigerants for Chillers

7:45 am – 9:45 am

Presented by Ryan Geister

The latest Montreal Protocol agreement signed October 16th, 2016 focuses on phase-down of HFCs. What refrigerant is in, what’s out, and what’s coming? At the same time, the market has been demanding equipment, design strategies and control methods that result in the highest levels of efficiency.

  • Will the new fluids hinder or enhance that efficiency?
  • Do they challenge the industry’s expectations for safety and flammability?
  • Will those refrigerants affect oil-free compressor choices?

Oil-free centrifugal chillers have been on the market for more than a decade. Some chilled water plants have these chillers installed alongside other conventional, oil-lubricated centrifugal chillers, while other installations use only oil-free. During that time, manufacturers, owners and operators have accumulated knowledge and experience leading people to ask questions about performance, reliability, service, maintenance, and delivered efficiency.  It includes a discussion of compressor technology aimed to compare and contrast design, operating and maintenance issues of conventional versus oil-free centrifugal chillers in a real-world perspective.

The VRF Market

10:00 am – 12:00 pm

Presented by Shawn Green

Variable Refrigerant Flow Systems can keep energy costs low while delivering different occupant-selected temperatures to multiple zones. The demand for this technology is increasing in the local market and you need to be in the know.  Do you know what separates Trane from other manufacturers? We will details how we can assist with start-up, configuration, troubleshooting, commissioning and operation of these systems.  We will also drill down on the right controls to use for optimal incorporation of additional equipment to the system.

You will also learn technical subtleties, such as:

  • How an MCU works
  • What is happening in the CU and three refrigerant pipes
  • How ambient temperatures affect and derates one CU and multiple CU’s
  • The effect on performance of line length and risers

Event Schedule

7:30 am –  Doors Open & Breakfast is Served
7:45 am – Compressors and Refrigerants for Chillers
9:45 am – Break
10:00 am – The VRF Market


Ryan Geister is the Applications Engineering leader for the Intelligent Systems team at Trane, a brand of Ingersoll-Rand. During his 21-year tenure, Ryan has held various roles supporting the Trane portfolio of chillers with increasing responsibilities. As the Intelligent Systems leader, he is focused on advancing a strategy to drive system solutions for customers. This includes developing tools and improving the effectiveness of the Trane selling organization by expanding systems knowledge and capabilities to influence consulting engineers and technical decision makers. Ryan serves on the Ingersoll Rand Refrigerant Strategy Committee.

Ryan is the out-going chairman of the AHRI (Air-Conditioning, Heating & Refrigeration Institute) Chiller Section Committee and is currently a member of the AHRI Systems Steering Committee. Ryan has been a member of ASHRAE for 20 years and is a published ASHRAE Journal author. He earned a bachelor’s degree in engineering from the University of Illinois, Champaign-Urbana in 1995 and a master’s degree in business administration from the University of Wisconsin, La Crosse in 2000.

Shawn Green is the Ductless Split Systems Product Manager responsible for leading Trane Commercial Mini-Split products within the $1 billion dollar North American Market. During his 20 years in the HVAC industry, Shawn has served in several sales leadership roles with focus on the commercial ductless business the past 3 years Shawn started with Trane in 2006 as a NSS Account Manager and transitioned to the Trane ProSpace Ductless team in 2014 as a Product Sales Manager. Prior to joining Trane Shawn worked as a Mechanical Contractor and a journeymen pipefitter.

Shawn has had a positive impact within the Trane organization by consistently educating account managers and advising the field in regards to ductless application and has successfully assisted in converting business to Trane ProSpace Ductless in vertical markets. Shawn has been the guest speaker at many seminars and conferences including ASHRAE, USGBC and American Institute of Architects. Topics have included ASHRAE-15, VRF application and commissioning, VRF controls and applying VRF in historic buildings. He is a member of ASHRAE, USGBC and a LEED AP.Shawn is a graduate of Central Michigan University and currently lives in Macomb, Michigan with his wife Kristin and their three children.