The Natural Refrigeration Review is a quarterly publication that contains technical articles, regulatory and code updates, industry news and information about IIAR activities and publications. It is distributed by email to all IIAR Members and IIAR Contact lists.
SUMMER 2026 THE NATURAL REFRIGERATION REVIEW
The Natural Refrigeration Review issues are available as PDF downloads for both lIAR members and non-members, or as individual article posts below. Click the button to view the full issue, or scroll through all the individual issue articles below.
ARF News
The Ammonia Refrigeration Foundation, the research arm of the ammonia refrigeration industry, reported that it raised $400,000 in donations in 2014, bringing its endowment to more than $2 million.
Read MoreIIAR, Industry Partners Respond to Regulatory Information Requests
Last year’s fertilizer plant explosion in West, Texas, drew the attention of regulatory agencies to nearly every corner of the chemical industry
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Eurammon Forum Highlights the Status of Natural Refrigerants
The Natural Refrigerants Forum organized by Eurammon on Wednesday, October 15 at the Chillventa fair in Nuremburg, Germany provided an intriguing survey of the factors, both positive and negative, infl uencing the use of ammonia and other natural refrigerants around the world.
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Measuring Pipe Wall Thickness
The issue of when, and how, to measure wall thickness on a pipe has become a hot topic in recent months. Clearly, it’s important to maintain the mechanical integrity of refrigeration systems in order to avoid ammonia leaks. But there is debate in the industry over when pipes that display no visible damage should be examined.
Read MoreWater Contamination in an Ammonia Refrigeration System Leads to Higher Costs
In many closed-circuit ammonia refrigeration systems, water contamination can occur over a period of time and the effects of that contamination can easily go unnoticed. One thing water contamination can do is cause an aqueous ammonia solution to be formed, which then replaces anhydrous ammonia refrigerant.
Read MoreCO2 EVAPORATOR DESIGN
The process of selecting air cooling evaporators to operate in a CO2 refrigeration system is very similar to selecting evaporators for ammonia. Evaporator manufacturers typically require the same input data for both refrigerants and likewise display performance and selection data in the same way.
Read MoreChairman’s Message
The end of summer is here, and that means it’s time to refocus our attention on important projects and get ready for the whirlwind of activity coming our way this fall.
Read MorePresident’s Message by Dave Rule
Throughout this edition of the Condenser, you’ll see a common theme: Progress. I couldn’t be more excited about where IIAR – and the industry as a whole – are heading.
Read MoreSRV Calc
The five-year replacement interval for relief valves isn’t a practice that gets much scrutiny. It’s spelled out in IIAR Bulletin 110, and a provision establishing the need for a common interval appears in the Boiler and Pressure Vessel Code, making it a generally accepted “no-brainer” for much of the industrial refrigeration industry.
Read MoreIIAR Research Committee Completes Quantitative Risk Analysis Project
The International Institute of Ammonia Refrigeration recently completed a research study using quantitative risk analysis, or QRA, to evaluate the effectiveness of five methods for mitigating an ammonia release during an overpressure event.
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Presidential Working Group Recommends Policy Changes Impacting Chemical Facilities
In response to the tragic accident last year in West, Texas, President Obama issued Executive Order (EO) 13650, Improving Chemical Facility Safety and Security. The EO is intended to enhance the safety and security of chemical facilities and reduce risks associated with hazardous chemicals to facility workers and operators, communities, and responders.
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Avoiding That “Oh No” Moment
Having well thought out and properly used operating procedures is important, but having good plans and people in place in case something goes wrong can make a world of difference. Think back to your own past.
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Performing Mechanical Integrity Inspections of Air Coolers
Owners should perform periodic mechanical integrity inspections on air coolers to ensure the continued reliability of the unit and to minimize the risk of an accidental ammonia release. This article lists some of the more common issues to look for when performing mechanical integrity inspections of a typical air cooler.
Read MoreIIAR’S NINTH INDUSTRIAL REFRIGERATION SEMINAR HIGHLIGHTS GROWTH IN LATIN AMERICA
The International Institute of Ammonia Refrigeration held its ninth Industrial Refrigeration Seminar in Latin America in Chile last month, an event that marked the organization’s increasing involvement in education and safety advocacy in the region.
Read More2015 IIAR Conference to Feature Navy SEAL Keynote
As we move into the fall season, thoughts of IIAR’s annual conference in March seem almost premature but the IIAR staff is already putting the final touches on preparations for our 2015 conference in San Diego, and there are many exciting new features to announce.
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Small Leaks Lead to Big Costs
When it comes to energy efficiency, the dollars are in the details. And those details can be easily overlooked, especially when multiple small system leaks start to add up in a large facility.
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DHS Looks to Increased Collaboration with Ammonia Refrigeration Industry
Changes could be coming to the Chemical Facility Anti-Terrorism Standards, or CFATS, program run by the Department of Homeland Security, which could mean the agency will issue revised regulations and seek increased collaboration within the ammonia refrigeration industry.
Read MoreIIAR Takes on Optimum Pipe Sizing Research Project
A new research project, recently implemented by the International Institute of Ammonia Refrigeration, will revisit the economic sizing methodology the industry uses to determine optimum pipe sizing.
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Chile´s Ammonia Sector: Leading the Way on Regulation and Certifi cation in Latin America
In November 2012, this column discussed developments in Chile´s Ammonia Refrigeration sector including the publicprivate initiative to create a Best Practices Manual for the local Ammonia Refrigeration Industry and the potential for cooperation between IIAR and the Chilean Chamber of Refrigeration and Air Conditioning.
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Testing High Pressure Cutouts
The issue of how to test high pressure cutouts in a refrigeration system can be a contentious one. And although there is no simple solution, there are many guidelines that offer direction.
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