18 December 2017

Disadvantage of natural refrigerants diminishing

Stephan Sicars of UNIDO talks about the market situation for plants using natural refrigerants in emerging and developing countries.

Stephen Sicars from the United Nations Industrial Development Organization (UNIDO).

Within the framework of the Kigali Amendment to the Montreal Protocol, 150 countries have commited to gradually dispense with using HFCs that impact on the climate.

The rate of implementing the phase-down process depends on the development status of each particular country. While industrial countries such as the USA want to implement a 85 percent decrease in HFCs by 2036, much longer periods apply for emerging and developing countries.

eurammon member, Stephan Sicars, from the United Nations Industrial Development Organization (UNIDO), looks at trends and tendencies covering all aspects of equipment with natural refrigerants in emerging and developing countries.

What role do industrial countries play when it comes to implementing the Montreal Protocol in emerging and developing countries?

Stephan Sicars: The industrial countries are currently providing about US $160 million each year for implementing the Montreal Protocol in the developing and emerging countries. But a lot has changed since the Montreal Protocol came into force more than 25 years ago. Back then, both the know-how and many products came from the industrial countries and were consumed in developing countries. Today, many developments come from the emerging countries. Frequently, they are just as good as or even better than solutions produced by the industrial countries when it comes to simplicity, value for money and robustness.

How is the market for natural refrigerants developing in the emerging and developing countries?

Stephan Sicars: Numerous more recent applications with natural refrigerants are currently doing well in the market, without any additional legal interference such as prohibitions, subsidies or taxation. Systems with natural refrigerants are said to be easy to implement, but only under certain conditions. CO2-based systems are preferably used in larger countries where refrigeration system installers have a network of technical representatives, with training and maintenance provided by the local dealerships. Ammonia is mainly used as a refrigerant in countries that already have many years of experience with ammonia. However, the ability to plan more complex ammonia systems including the safety aspects and to steer such systems through the corresponding approval processes is currently declining. This refers to both system installing firms and also to the authorities in some medium-sized countries.

Are there limits for applications with natural refrigerants?

Stephan Sicars: In technical terms, a large share of refrigerating tasks can be solved well or very well with equipment that uses natural refrigerants. However, development work is still necessary for systems in the medium capacity range between 5 and 100kW, particularly for commercial air-conditioning. Due to safety precautions the medium capacity range of typical direct evaporation air-conditioners would exceed the allowed charge limits for hydrocarbons. On the other hand this range has too low capacity for efficient water chilling units. Intensive work is currently in progress worldwide on corresponding solutions.

Which application areas have the greatest need for action?

Stephan Sicars: Refrigerants are responsible for about 1.5 percent of the anthropogenic greenhouse effect. Most of the global emissions come from small air-conditioning units (mini-splits) and car air-conditioning systems. It looks as if car air-conditioning systems at least are moving towards refrigerants with a low greenhouse effect. That cannot be said for split air-conditioning units. Although the developing countries have a number of manufacturers for split refrigeration systems with hydrocarbons as refrigerants, with most major manufacturers offering a capacity for producing several million units a year, it is almost impossible to sell the units at the moment for competitive reasons. Now that the units reach the same safety levels as the current standard units, the key remaining barrier posed by hydrocarbon systems consists of the higher installation costs. However, higher costs are difficult to compensate in the purely market economy environment prevailing in developing countries.

How can we get people to invest more in climate-friendly technologies?

Stephan Sicars: With a unit operating on natural refrigerants, the customer has to take on a very high share of the direct and indirect costs. With equipment operating on fluorinated hydrocarbons, these costs are paid by society at large because in the long term it is society at large that has to cover the consequences of the far higher environmental pollution. However, this competitive disadvantage would appear to be diminishing – not by sharing out the environment costs but by implementing stricter emission prevention requirements. With the costs resulting from the climate relevance of refrigerants increasingly being shared out between the equipment, and similarly with the requirements made by the governments in terms of operation and leakage scenarios getting stricter all the time, solutions with natural refrigerants will sell better on the market. On the other hand, it is, for example, also relatively probable that China will play a greater role in steering the market in future. That way, new technologies would become increasingly competitive on China's huge market and could then be exported to other countries.

First Montreal, then Kigali: can we expect even tighter regulations for refrigerants in future?

Stephan Sicars: I believe so. In my opinion, it is improbable that refrigerants with a GWP over about 100 will see broad use in the medium term. While apart from prohibiting refrigerants that impact on the climate, there are also other ways of mitigating climate change, for example by enhancing the energy efficiency of refrigerating systems. After all, the use of fossil energies is one of the main causes of CO2 emissions. But in global terms, for the individual states it is far cheaper and easier to enforce a refrigerant prohibition than to specify energy efficiency measures for plants and equipment. In other words, plants that run on refrigerants with a higher GWP will certainly have to meet far stricter requirements in terms of equipment tightness and monitoring in future. This makes the use of such refrigerants increasingly unattractive because of the expense involved, thus diminishing the competitive disadvantage for machines with natural refrigerants.


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