Conference Program

The IIAR 2022 Natural Refrigeration Conference & Expo will take place March 6th - 9th, 2022 in Savannah, GA. More information will be made available concerning content and speaker for each topic once all technical paper peer reviews have been completed beginning in January 2022. Each technical session will earn attendees PDH credits related to the session topic, with a maximum of 29.0 PDH points available. The points will be awarded when you enter a code into the PDH Manager upon completion of the program. 

Topics to be presented

Sunday Education Program

Fundamentals and Future of Refrigeration Controls

In modern refrigeration settings, controls are more powerful than they’ve ever been. This four-hour course will examine how controls are more and more becoming part of strategic operations, and why refrigeration professionals need to understand the architecture and capabilities of currently available control systems. We’ll look at the fundamentals of automated controls; the needs of end users when it comes to controls; opportunities in cloud-based controls and the accompanying security issues; and value-added benefits provided by automated controls.

PRESENTERS: Jeff Henness (VaCom Technologies), David Jametsky (Danfoss), Roberto Mendoza (Logix)
Date: Sunday, March 6, 2022, 1:00 PM - 5:00 PM   

Technical papers

Downloads will be available for Technical Papers via the IIAR app and this website

Paul JasczynskiProper Installation Practices for Variable Frequency Drives (VFDs)

This session will examine proper installation of variable frequency drives on industrial motors, with a focus on selecting line and load reactors; proper installation of shielded cable; high-speed fuses for protecting the VFD; environmental considerations when installing a VFD (temperature, dust, dirt , water, sunlight, vibration, etc.); and the importance of VFD duty rated motors. In addition, the speaker will offer practical suggestions for VFD maintenance and discuss why it’s a good idea to engage key suppliers and ask for their guidance in addressing installation concerns and practices.
Presenter: Paul Jasczynski, Logic Technologies
Dates: Monday, March 7, 2022, 1:45 PM - 2:35 PM  |  Tuesday, March 8, 2022, 3:25 PM - 4:15 PM

James MajsakManaging Your Energy Costs - It Can Be Done!

How do you successfully initiate and manage an energy management program for your facility? This presentation provides an overview that can be applied to machine room equipment, cold storage distribution systems, and other significant loads commonly found in the refrigeration industry. We’ll also discuss the nuances of decoding your utility bills and justifying sub-metering projects to management.
Presenter: James Majsak and Benny Phillips, CrossnoKaye
Date: Monday, March 7, 2022, 2:40 PM - 3:30 PM  |  Tuesday, March 8, 2022, 1:10 PM - 2:00 PM

Giacomo PisanoTranscritical CO2 Compressors: Technical Challenges in Industrial Refrigeration Applications

Carbon dioxide (CO2) has become the refrigerant of choice for many applications, often granting better COP levels than technologies based on other refrigerants. CO2 refrigeration has allowed several industrial sectors to reduce their usage of high-GWP refrigerants and pursue sensible energy cost reductions. However, specific components and appropriate system design are mandatory when approaching CO2 technology due to the unique thermodynamic characteristics of this refrigerant. This session will describe the challenges of developing compressors for industrial CO2 transcritical operation with displacement up to 4,412.00 cfh and 180 hp.
Presenter: Giacomo Pisano, Dorin
Date: Monday, March 7, 2022, 4:00 PM - 4:50 PM  |  Tuesday, March 8, 2022, 2:05 PM - 2:55 PM

Don't Curse the Purger

An issue that presents itself at various times in various installations is liquid ammonia discharging through the autopurger's bubbler. Two newly installed autopurgers experienced this phenomenon at different locations in the same city. The presence of ammonia liquid in the purger discharge water resulted in repeated shut down and evacuation of the facilities. The users took the unit out of service. Management became interested in the wasteful cost of compressing non-condensable gasses within the system and was dismayed to realize the "easy" decision to moth-ball the autopurgers had unwanted financial consequences. 
Presenter: Don Tragethon, Western Precooling
Date: Monday, March 7, 2022, 4:00 PM - 4:50 PM  |  Tuesday, March 8, 2022, 3:25 PM - 4:15 PM

Como Conducir un Análisis PHA

El Análisis de Peligros del Proceso (PHA) es uno de los principales elementos del Process Safety Management (PSM) regulado por Occupational Safety and Health Administration (OSHA), para ayudar a garantizar lugares de trabajo seguros donde se utilizan sustancias químicas altamente peligrosas (29 CFR 1910.119). Este papel técnico provee de una guía para elaborar los análisis de riesgo para sistemas de refrigeración por amoniaco.
Presentador: Juan Zeledon, Cargill Nicaragua
Fecha: martes 8 de marzo, 2022, 2:05 PM - 2:55 PM

Liquid Overfeed Ammonia Refrigerating Plant and Energy Efficiency

Multiple factors are combining to elevate the ranking of system energy efficiencies in business decisions. This session will look at efforts to quantify energy performance penalties associated with liquid overfeed through comparisons of near identical practical installations where the only significant difference is the presence or not of liquefied refrigerant in the suction lines. Finally, we’ll present a small selection of business cases that demonstrate the economic viability of design interventions that target energy efficiency maximization.
Presenter: Stefan Jensen, Scantec Refrigeration Technologies
Date: Monday, March 7, 2022, 4:00 PM - 4:50 PM

Simple Equations for Determining Mass Flow in Ammonia Refrigeration Systems

Modern industrial refrigeration systems often employ multiple temperature and pressure levels to maintain a variety of conditions in processing and storage facilities. Performing mass balance determinations is the only way to accurately size equipment, and it offers a chance to reveal strategies for saving energy and first cost. This presentation will describe a methodology to develop simple equations for determining mass flows in industrial refrigeration systems, which can help to quantify mass flows that are unknown or difficult to calculate using other methods.
Presenter: Don Faust, Johnson Controls
Date: Monday, March 7, 2022, 4:55 PM - 5:45 PM  |  Tuesday, March 8, 2022, 1:10 PM - 2:00 PM

Oil Management Design Considerations for Industrial Transcritical CO2 Systems

Carbon dioxide as a refrigerant is becoming increasingly more popular on a global scale. The industrial refrigeration market is now finding applications where transcritical CO2 systems are a sought-after design. But unlike in ammonia systems, oil in CO2 systems is miscible, which creates challenges in its management. This presentation will explore a comparison to commercial systems as a baseline for tried-and-true oil management. We’ll then explain some of the unique challenges and offer potential solutions in how to solve these challenges, including, including sizing component selection. 
Presenters: Alessandro Silva and Joe Sanchez, Bitzer US
Date: Monday, March 7, 2022, 4:55 PM - 5:45 PM  |  Tuesday, March 8, 2022, 4:20 PM - 5:10 PM

Absorption Applications for Residential/Light Commercial Space Conditioning and Water Heating

With a coefficient of performance (COP) ranging from 1.4 to 2.0 for space and water heating, ammonia-water absorption heat pumps have potential to provide significant CO2 emission reductions for residential and light commercial applications, which are historically very difficult to decarbonize. This presentation will examine methods of applying gas-fired absorption heat pumps to heating applications normally served by furnaces, boilers, or commercial water heaters. We will also review the potential energy and CO2 emissions reductions compared to both conventional and electric vapor compression appliances.
Presenter: Mike Garrabrant, Stone Mountain Technologies
Date: Monday, March 7, 2022, 4:55 PM - 5:45 PM  |  Tuesday, March 8, 2022, 3:25 PM - 4:15 PM

CFD Modelling of Condensate Induced Hydraulic Shock Events

Condensation induced hydraulic shock (CIHS) is a safety issue requiring accurate prediction of the risk of pipe rupture due to formation of a hydraulic shock. This session will describe a computerized fluid dynamics (CFD) that has been validated against experimental data. Its application to a real accident scenario produced accurate predictions and demonstrated capability to address safety and design issues in industrial scale refrigeration systems. We’ll also discuss the potential benefits of CFD analysis of generic valve group designs in locations where hydraulic shock most frequently occurs.
Presenter: Chidambaram (Chidu) Narayanan, AFRY Switzerland
Date: Tuesday, March 8, 2022, 1:45 PM - 2:35 PM  |  Monday, March 7, 2022, 1:45 PM - 2:35 PM

Benefit of Ammonia Heat Pump Implementation in the Industry and in District Heating

Over the last 15 years the market for high temperature ammonia heat pumps been growing in Europe and now it also starts to take of in North America. Many lessons have been learned over that period in Europe as higher pressure and temperature gives new challenges in the refrigerant design. This paper presents the key points, where heat pump installation differs from refrigeration installation through three case stories of installation in Europe.
Presenters: Kenneth Hoffman, David Blankley, and Larry Bradley, GEA
Dates: Monday, March 7, 2022, 4:00 PM - 4:50 PM  |  Tuesday, March 8, 2022, 4:20 PM - 5:10 PM


Review of Newly Published Release Calculation Guideline

This research project update will discuss the recently published IIAR guideline for estimating refrigerant releases. It is tailored to the industrial refrigeration industry and will be using “state of the art” methods and equations. Due to the complexity of the methods and equations, detailed examples and MS Excel templates will be provided. The Excel templates can be used as stand-alone tools or embedded into other spreadsheets. 
Presenter: Bent Wiencke, Nestle (retired)
Date: Tuesday, March 8, 2022, 2:05 PM - 2:55 PM

Refrigeration Pump Applications

This session will undertake an analysis of the factors that can affect optimal operation of pumps. We’ll look at cavitation, vapor entrainment, as well as the components that are used to optimize the efficiency and operation of pumps in a refrigeration system.
Presenter: Ernesto Rodriguez, Hermetic-Pumpen
Date (English): Monday, March 7, 2022, 2:40 PM - 3:30 PM    |  (Spanish) Tuesday, March 8, 2022, 3:25 PM - 4:15 PM

Global Natural Refrigerant Market Data - Latest Trends and Expected Impact

This presentation will share results from the ATMOsphere (formerly shecco) 2021 data collection from original equipment manufacturers (OEMs) and end users, highlighting growing trends in commercial and industrial refrigeration applications. The presentation will focus on ammonia, CO2, and hydrocarbons, sharing the latest installation numbers and market trends, and discussing how these trends are driving (or in some cases, impeding) the adoption of natural refrigerants in key regions. What are the key drivers and barriers for the adoption of natural refrigerants and how is the market evolving?  

Presenter: Marc Chasserot, Shecco
Date: Tuesday, March 8, 2022, 4:20 PM - 5:10 PM


Closing Forum: Review of IIAR Guidelines
Date: Wednesday, March 9, 2022, 11:00 AM - 12:30 PM

Code and Regulatory Panel
Presenters: Jeff Shapiro and Lowell Randel
Date: Tuesday, March 8, 2022, 1:10 PM - 2:55 PM

Research Panel
Presenters: Wayne Wehber, Vilter Manufacturing; Scott Davis, PhD, Gexcon; Bent Wiencke, Nestle (ret.); Chidu Narayanan, AFRY Switzerland , Bill Greulich, Kensington Consulting
Date: Monday, March 7, 2022, 

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