Is my Ice Cream Going to Melt? How a New Global Policy Will Change Cold Food Transportation
With this new policy, significant action is now being taken to phase out HFC refrigerants which are found in many areas of our daily life. How will companies that transport cold foods adapt to these new regulations?
The ability to refrigerate your food and cool your home is something that is second nature in our lives; however, the details of how this refrigeration occurs are not usually in the forefront of our minds. Less than a month ago though, this whole landscape of refrigeration and cooling changed. On October 15th, the Kigali Amendment to the Montreal Protocol was agreed upon. This amendment set an aggressive timeline and goal to completely phase out the use of common refrigerant chemicals called hydrofluorocarbons (HFCs) to eliminate this greenhouse gas鈥� effect on global warming [1]. Many variations of HFC refrigerants exist, but to highlight one place where they can be found we鈥檒l zoom in on the transportation of cold or frozen food across the US.
One of the largest players in this industry is Sysco, with a fleet of over 9,500 trucks transporting 鈥渇rozen or perishable鈥� food in North America [2]. According to Sysco鈥檚 2014 Sustainability Report (the most recent one available), the fuel used in these trucks is Sysco鈥檚 focus when it comes to reducing emissions. An effort has been made to expand and supplement the fleet with more fuel-efficient trucks running on clean diesel and liquid natural gas (LNG) [3]. In addition to the truck itself, the trailers are equipped with refrigeration units. These refrigeration units have two impacts on the environment. The units require a portable power source which could be diesel, gasoline, or other generator fuels. This is the area where Sysco appears to be focusing on by participating in a research project testing out fuel cell powered refrigeration units [3].
Now with the Kigali amendment, the aspect of these units that is more pressing is the refrigerant chemical used to cool the air circulating in the unit. 聽As found in a spec sheet for a typical unit, the refrigerant used is called R-404A [4]. This refrigerant is a blend of three HFC refrigerants and is considered 鈥渘on-ozone depleting鈥� per its manufacturer [5]. This may be where the blind spot comes from in this area; despite the environmentally friendly label of 鈥渘on-ozone depleting鈥� this refrigerant still has high 鈥済lobal warming potential [5]鈥� and falls under the HFC phase out umbrella. It is up to the producers of these refrigerants, refrigeration units, and Sysco themselves to actively address the HFC phase out.
Adaptation for Sysco and others affected by the HFC ban will need to come in the form of alternative refrigeration chemicals. This presents new opportunities for chemical companies to create effective, truly environmentally safe refrigerants [6]. While the refrigeration industries wait for the latest breakthroughs, the phase out deadline is fast approaching. There are existing alternatives that many industries have been using for years or have recently adopted like ammonia and hydrocarbons (HC鈥檚 not HFC鈥檚) [6]. In the stationary commercial refrigeration area, hydrocarbon refrigerants have been a popular replacement substance with companies like Ben & Jerry鈥檚 even advertising to the consumer their environmentally friendly freezers [7].
Unfortunately, hydrocarbon refrigerants present some flammability risks that were not present in HFC鈥檚 and they do still have some global warming potential (about 1/1000th of HFC) [6]. This leads to a slightly tarnished reputation where the general public may have a perception that hydrocarbon鈥檚 being used as refrigerants is dangerous. While the flammability increase is there, it is not enough to cause any rational concern. One of Sysco鈥檚 trucks travelling down the highway already contains large amounts of hydrocarbons as normal truck fuel and fuel for the refrigeration units. As long as the retrofit from HFC refrigerant to hydrocarbon refrigerant is planned with all the normal safeguards around hydrocarbons in place, Sysco should be able to lead the way with a successful transition.
A successful transition from HFC refrigerants should become priority for all companies that use HFC鈥檚 due to the impending timeline and the ability to capitalize on the positive publicity related to this change. For the United States, the growth of HFC use will be capped and is expected to have also been reduced by 10% as of 2019. As seen in the graph above the incremental effect of this HFC ban is measurable in the future temperature change of the globe [1]. It is essential for Sysco and other food transporters to plan and determine the best solutions around this HFC refrigerant ban 鈥� sooner rather than later.
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[1] Institute for Governance & Sustainable Development. 鈥淣ations Agree to Kigali Amendment: Largest Near-Term Temperature Reduction from Single Agreement鈥�. . Accessed November 2016.
[2] Sysco Corporation. 鈥淎 Fresh Perspective 2015 Annual Report鈥�. 聽 . Accessed November 2016.
[3] Sysco Corporation. 鈥�2014 Sustainability Report鈥�. . Accessed November 2016.
[4] Carrier United Technologies. 鈥淧erformance Specifications X4 7300鈥�. 聽 . Accessed November 2016.
[5] Forane by Arkema. 鈥淔orane庐 404A鈥�. . Accessed November 2016.
[6] European Commission. 鈥淐limate-friendly alternatives to HFCs and HCFCs鈥�. 聽 . Accessed November 2016.
[7] Martens, Cari. 鈥淏en & Jerry鈥檚 Testing New Greener Freezers.鈥� 聽 . Accessed November 2016.
Cover Photo:
Other Photos: [1], [7]
Interesting topic! When we think about transportation and GHG emissions, it is common to think about fuel consumption, but it’s not common to find refrigerants related to climate change.
I would recommend Sysco to get more involved in the topic, looking for partnerships with Universities or Labs to develop new chemicals or technologies. Innovations in this field can help Sysco create a competitive advantage in the supply chain for restaurants and retailers, becoming an important part of the strategy of the firm.
Thank you for sharing your perspective on such an interesting topic. Thanks to the Kigali Amendment, perhaps logistics companies and perishable goods manufacturers will be incentivized to partner with researchers on developing greener refrigerants. This article made me curious about the use of refrigerants worldwide and which use cases require the most volume. Is it trucking / land shipping? Air freight (e.g. shipping perishable imports/exports, medicines)? And what about the refrigerants in grocery stores and homes around the world? This technology is something we take hugely for granted, and despite its little-known impact on GHG emissions, I’m pleased to learn that action is being taken to regulate this.
Thanks for posting MIM. I would love to see these major companies start making some of these changes earlier (i.e., when it becomes known that products they use have negative effects on the environment), as we all know the government is often a few years behind on policy. I started researching refrigeration technology and found that Carrier, a leader in heating, air-conditioning and refrigeration solutions, was one of the first providers to utilize CO2 as a refrigerant . I wonder if Sysco has considered such technologies and if it is an economically feasible replacement for them.