Update as of March 11: IIAR's Natural Refrigeration Conference & Heavy Equipment Show, an annual event that combines three days of exhibitions with a full conference program focused on natural refrigeration using ammonia and carbon dioxide, was cancelled on March 11 due to the worldwide pandemic, COVID-19. IIAR is currently working to address any future plans for the 2020 conference. Learn more at iiar.org.


Original article published February 21:
Engineers, end users, wholesalers, manufacturers and contractors will gather, learn and share at the annual meeting presented by the International Institute of Ammonia Refrigeration on March 15-18 in Orlando. The Natural Refrigeration Conference and Expo brings together those involved with natural refrigeration industry technologies, services and products at the Rosen Shingle Creek Resort.


Cool Air
Howden Roots
Mayakawa USA
Zero Zone

Opportunities to advance work related to natural refrigeration and for industrial refrigeration education abound. On Sunday, IIAR will present a half-day program on the application and design of secondary coolant systems. Session topics include:

  • Business case for using secondary refrigerants in combination with natural primary systems, some basic design principles and IIAR initiatives.
  • Various heat transfer fluids, their properties, and their pros and cons for applications.
  • Pumping, piping and variable flow control of secondary fluids.
  • CO2 volatile brine systems with case studies on successful projects.

Sunday’s half-day seminar will also cover pumping and piping system design techniques that can minimize energy costs. The use of CO2 as a “volatile brine” also will be addressed. Instructors will demonstrate engineering calculations, and case study examples of successful applications will be provided. The registration fee for the secondary coolants Sunday program is charged in addition to the regular conference program.

Also on Sunday, IIAR will host meetings for several of its committees: international, education, government relations, piping, research, standards, CO2 handbook and marketing.

At the core of the four-day program is the technical program. Beginning on Monday, March 16, and continuing through Wednesday, March 18, the technical conference agenda includes peer-reviewed technical paper presentations, experiential workshops and interactive panels. Presentation topics include:

  • OSHA 1910.146 and keeping confined-space entry safe.
  • A CFD simulation of ammonia release and detection in refrigerated spaces.
  • Energy efficiency and a cost comparison of transcritical CO2 and ammonia.
  • The proper installation and maintenance practices for VFDs.
  • Development of a mechanical insulation installation guideline for refrigeration applications.
  • Lessons learned and safety in ammonia refrigeration.
  • Methods for saving energy in cold storage warehouses.
  • An energy comparison of hot gas vs. electric defrost for refrigeration systems.
  • Permanent refrigeration plant performance optimization using continuous real-time analysis.
  • Technical and technological barriers for ammonia refrigeration thermal districts in Colombia.
  • Performing an effective HAZOP PHA.
  • Assessment of lubricants for hydrocarbon refrigeration systems.
  • Operating cost comparison between transcritical CO2 and ammonia recirculation systems in a cold storage warehouse.
  • Management of change as a key PSM element.
  • Review of accidents in the ammonia refrigeration industry.
  • Establishing an evaluation system for PSM.
  • Study of package chiller systems and a comparison of natural and HFC refrigerants.
  • Update on IIAR/ARF research projects.

Several presentations will be presented in English and Spanish.

Throughout the four-day event, the exhibition hall plays host to manufacturers displaying industrial refrigeration system products and services. Other events planned during the event include exhibitor-sponsored technomercial presentations and networking opportunities during hosted breakfasts, breaks, lunches and receptions. Exhibitors Baltimore Aircoil, Colmac Coil Manufacturing Inc., GEA, Zero Zone, Mayekawa Mycom, Heatcraft, Gamma Graphics Services, Evapco Inc., Güntner US LLC, Frick Industrial Refrigeration and Danfoss will present technomericals on the convention center floor. Also in the expo hall, attendees can see first-hand some of the industrial refrigeration technologies they’ve learned about elsewhere. Each booth will be staffed with engineers experienced with ammonia refrigeration to help attendees learn more about exhibitors’ capabilities.

For more information about the 2020 IIAR Natural Refrigeration Conference and Heavy Equipment Expo, visit www.iiar.org.

Ammonia Leak Detection


ATI designs and manufactures a complete line of ammonia gas detectors, both fixed and portable. Additionally, we produce gas detectors for 32 other toxic and combustible gases.

IIAR Booth 202
Analytical Technology Inc.
6 Iron Bride Drive
Collegeville, PA  19462

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Compressor Ammonia Compressor Pack


BITZER’s Ammonia Compressor Pack (ACP) promises high efficiency at full and part load operation with high reliability.  The modular design of the ACP combines two or three compressors, a common oil separator, and a frequency inverter to provide a broad range of operation in high, medium or low temp applications.

IIAR Booth 401

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Ammonia and Solest Lubricants


CAMCO is an industry leader in synthetic lubricants. In addition to our ammonia and Solest lubricants, CAMCO offers lubricants for any refrigeration application. CAMCO also offers a comprehensive range of Industrial Lubricants for process gas, hydrocarbon gas, air compressor, vacuum pumps, hydraulics, gears, chains, turbines, landfill gas, field gas and many NSF H1 and H2 food-grade applications.    

IIAR Booth 416
CAMCO Lubricants
1544 134th Ave NE
Ham Lake, MN 55304

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Ammonia Leak Detection


For more than 35 years, Cool Air has been manufacturing ammonia leak detectors for the industrial refrigeration industries such as food processing plants, cold storage facilities, fish processors, utilities and more, in the USA and around the world. Cool Air leak detectors are reliable, have the longest-lasting sensor, and are the easiest to maintain of any detector on the market today. We also offer technical phone support and custom solutions. Now offering long lasting Electrochemical sensor    

IIAR Booth 609
Cool Air

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Take control of your fire and gas detection universe.


Discover an easy way to reliably control the various gas and vapor monitors located throughout your facility. Suitable for fire and gas warning systems of different complexity and number of transmitters, the Dräger REGARD® 7000 is designed to meet your needs – both today and tomorrow.

IIAR Booth 1015
Draeger, Inc.

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Prevent White Rust


EVAPCO’s two-step passivation solution will minimize white rust for galvanized equipment requiring immediate heat load. Pass-Protect™ is a complete evaporative condenser and fluid cooler passivation solution. Our proven factory-assisted pretreatment, Passiv-Assist™, jumpstarts the passivation process to meet aggressive project schedules. Then our factory-authorized field passivation service completes the process to provide unparalleled equipment protection. 

IIAR Booth 509

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New Low Charge Central System


Our new low charge central system design creates greater safety and security for your employees, greater protection from inventory damage, and greater peace of mind knowing you have installed the highest standard of industrial refrigeration equipment. Discover the new world of industrial refrigeration. Specify Frick.

IIAR Booth 1111
Frick Industrial Refrigeration

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Introducing MAGNA Industrial Refrigeration


MAGNA Industrial Refrigeration is the latest addition of large-capacity cold storage equipment solutions for the industrial refrigeration market. From extreme blast freezers to sanitary food preparation applications, Heatcraft engineers products that give end-users greater choices to reduce energy costs, improve product integrity and to control their bottom line.    

IIAR Booth 535
Heatcraft Refrigeration Products

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Compressors for Process Cooling, Ammonia Applications

Howden Roots

Howden Roots offers a wide range of compressors for process cooling and ammonia applications. In our Plymouth Meeting office we keep a substantial stock of spare parts and compressors. In addition to our compressor rebuild offering, we have added re-installation, alignment, vibration analysis and replacement commissioning services.

IIAR Booth 408
Howden Roots LLC

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Compressor for Industrial Refrigeration


Mayekawa is an industry leader in the manufacturing of industrial refrigeration compressors and specialty equipment. Known globally for reliability and quality, MYCOM compressors deliver energy efficient, low maintenance and cost-effective solutions.

IIAR Booth 417
Mayekawa USA, Inc.

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A Leader in Industrial Refrigeration


Stellar offers the industry’s most comprehensive range of self-performed services. Our services include design of new industrial systems, ICE360 recreational systems, NH360 packaged solutions, compressor rebuilds, refrigeration parts and service, remote monitoring, PSM programs & management and NH360 PSM digital software.

IIAR Booth 907 & 909

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Packaged Cooling Solutions

Zero Zone

Zero Zone has the package industrial system to fit your application precisely. Whether it’s cold storage, food processing, pharmaceutical, or ice arenas, we deliver performance, reliability, and the most responsive customer service you’ll ever experience. Trust your next CO2, ammonia, or HFC chiller project to the professionals at Zero Zone.

IIAR Booth 808

Zero Zone Inc.