Showing posts with label GWP. Show all posts
Showing posts with label GWP. Show all posts

Tuesday, April 16, 2013

The Future of HFCs in Montreal Protocol


My Peter Powell

April 8, 2013
The Montreal Protocol is having a positive effect on reducing the size of the hole in the ozone layer.
It’s easy to argue that no single development has impacted the HVACR industry as much as the Montreal Protocol. The international treaty, which was signed 25 years ago, ultimately phased out CFC and HCFC production; introduced refrigerant recovery, recycling, and reclamation; and, essentially, enveloped the HVACR industry under the power of the U.S. Environmental Protection Agency (EPA), which now dictates certifications and penalties related to the use and handling of refrigerants.

More than two decades later, the worldwide contract is still strongly impacting many sectors of the HVACR industry, including the decisions of contractors and service technicians. Ongoing discussions are currently underway, examining ways to incorporate HFCs into the protocol in order to phase down their use due to relatively high global warming potential (GWP). And while no changes are expected in the foreseeable future, these continuing conversations, and the potential developments pending, have surely caught the attention of those across the industry.

Good News

But first, the good news: The protocol was designed to protect the ozone layer by phasing out the production of substances found to be responsible for ozone depletion, those having ozone depleting potential (ODP).
And, it appears to be working.

“The Montreal Protocol is widely recognized for being very effective in reducing ozone depleting substances including CFCs and HCFCs,” said Robert Wilkins, vice president of public affairs, Danfoss. “Although we do not expect atmospheric chlorine to return to pre-1980 levels until about 2050, it has peaked and has been trending downward for several years.”

The Emergence of HFCs

With the HVACR industry forced to turn away from CFCs and HCFCs, it has moved on to HFCs, which include no ODP. However, many HFCs carried a high GWP due to their abilities to trap infrared radiations in the atmosphere, which does contribute to the greenhouse effect.

The latest efforts to revise the Montreal Protocol include rating gases based on GWP, as well as ODP.
Rajan Rajendran, vice president of engineering services and sustainability for Emerson Climate Technologies, noted, “The U.S., Canada, and Mexico have proposed an amendment to the Montreal Protocol to address global warming with a phase down of HFCs. This effort has been in place for a few years now. While there are 107 other countries supporting it, there are other, more developing countries like India, China, and Brazil who oppose. One barrier that is often mentioned is that the Montreal Protocol has historically had a very clear mission of addressing ozone depletion, but climate change is outside of its charter.”

Danfoss’ Wilkins added, “The EPA and the Department of State jointly held a stakeholders meeting in Washington on Feb. 5 with American industry leaders and others to discuss possible steps forward. With industry representatives expressing support for a well-planned orderly global HFC phase down on a GWP-weighted basis, it is likely the North American proposal will be resubmitted in 2013 for consideration at this year’s annual meeting.”

But what happens after that is uncertain, although many expect minimal action for a few subsequent years.
Mack McFarland, environmental fellow, DuPont Chemicals & Fluoroproducts, said, “The proposed amendment to the Montreal Protocol has not yet been endorsed by all of the developing countries. Amendments are adopted by consensus. Discussions continue with more and more countries voicing their support each year. I think the industry views the predictable process under the Montreal Protocol as preferable to country-by-country command and control regimes.”

Rajendran agreed. “While there are efforts to make some changes in the protocol, I don’t believe we’ll see any changes in the next few years.”

Europe and the US

European leaders are conversationally discussing HFC regulations based on GWP.

According to the website R-744.com, “The debate did advance, with countries discussing HFC amendment proposals in an informal setting, as well as requesting more information on the availability of environmentally sound alternatives to ozone depleting substances.”

R-744.com noted that this debate has spanned four years, without resolution. In his second inaugural address President Barack Obama said, “We will respond to the threat of climate change, knowing that the failure to do so would betray our children and future generations.” He did not specify any specific proposals during this speech.

A Feb. 12 report from the White House, titled, “The President’s Plan for a Strong Middle Class and a Strong America,” revived calls for more reliance on solar and wind energy generation. The only reference to climate change was the statement, “The president has directed his cabinet to identify executive actions from across the administration to help reduce pollution, prepare our cities and nation for the worsening effects of climate change, and accelerate the transition to more sustainable sources of energy.”

But most do not see this as an omen for unilateral action. For one, a divided Congress seems unlikely to act on potentially costly initiatives. And many in the industry see the EPA wanting to work in the framework of a global consensus.

At the same time, Rajendran did suggest, “The HVACR industry in the U.S. should be watching the emerging U.S. state government regulations out of the West and Northeast as well as potential U.S. government actions and regulations on greenhouse gasses.”

DuPont’s McFarland said, “There are a broad range of global activities under way to address greenhouse gas emissions, such as the U.S. CAFE standard for lightweight motor vehicles, renewable fuels, electricity programs in various countries, and cap-and-trade pilots in China. We anticipate that absent of a global agreement such as the Montreal Protocol, the U.S. government will seek ways to reduce HFC emissions under its current authority.”

But, in the context of a global perspective, Wilkins said progress may occur slowly. “Any changes to the Montreal Protocol would take a few years to enact. If India and China could be persuaded to support an HFC phase down, leading to a global consensus, the Montreal Protocol would then undergo negotiations to finalize the amendment and provide specific targets and timetables for phasing down HFCs globally. The amendment would then need to be ratified country by country. In the U.S., that would likely require action by the Senate. Once approved, each country could begin its own process for phasing down HFCs — similar to the phase down of CFCs and HCFCs.”

SIDEBAR: A No-Go for Kyoto

If changes to the Montreal Protocol are slow starters in regards to any additional impact on HVACR contractors, the Kyoto Protocol is a non-starter. Kyoto was to be the document to obligate countries, starting in 2005, to reduce greenhouse gas emissions (GHG). Many countries signed and ratified it. The U.S. signed it, but failed to ratify it and Canada withdrew from it in 2011.

Even then, many ratifiers had problems reducing GHG emissions to promised levels. However, more than 100 nations have pledged support behind the regulation of GHG emissions through the Montreal Protocol, and a growing number of countries are ready to join on, if a draft is ever presented.

Mack McFarland, environmental fellow, DuPont Chemicals & Fluoroproducts, said, “While there are no discussions under the Kyoto Protocol specific to the HVACR industry, there are active discussions under the Montreal Protocol.”

Robert Wilkins, vice president of public affairs, Danfoss, acknowledged that climate change is emerging as an important issue for the Obama administration. “Since the U.S. never ratified the Kyoto Protocol, and nothing has developed regarding refrigerants, there isn’t likely to be any impact on the HVACR industry.”
Rajan Rajendran, vice president of engineering services and sustainability for Emerson Climate Technologies, said climate-change regulations could still surface in the U.S.

“From the Kyoto Protocol point of view, which is focused on climate change, the HVACR industry in the U.S. should be watching the emerging U.S. state government regulations on greenhouse gases.”

Publication date: 4/8/2013
Peter Powell is Refrigeration Editor. E-mail him at peterpowell@achrnews.com.

Monday, March 18, 2013

Beyond Familiar HFCs

DALLAS — While much of the buzz at the AHR Expo was on dwindling supplies of new HCFC-22, reclamation of that refrigerant, and use of alternative HFCs in retrofits, a number of conversations centered on alternatives beyond familiar HFCs. Even with the regulatory landscape unclear, the high global warming potential (GWP) of some HFCs was causing a stir on the show floor.

Low-GWP HFCs


While HFC-410A was firmly encamped as the refrigerant of choice for air conditioning in a large number of applications, its high GWP was turning attention in Dallas to use of HFC-32 as a stand-alone refrigerant. HFC-410A, which was introduced to the industry more than a decade ago as an alternative to R-22 in new equipment, carries a high GWP. R-32 has a much lower GWP (675 vs. 2088). This is a topic that has been in the industry for a number of years, since it first surfaced as a high-profile topic in 2010 at industry conferences hosted by Purdue University.

Danfoss furthered this notion at its AHR Expo booth, where it displayed its SG scroll compressor with the signage: “Get ready for Green Solutions with R-32.”

HFOs on Display


HFO refrigerants are widely recognized as the next generation of refrigerants. The alternative garnered its fair share of attention at the expo as well.

On the show floor, Honeywell was issuing a statement about its HFO refrigerant 1234ze which it markets as Solstice L-41. The manufacturer compared its refrigerant, stating that their refrigerant offers “significant advantages over another (R-410A) alternative, R-32, which has a higher GWP and limitations related to high-discharge temperatures, which can affect performance and durability in hot climates, and may also require new lubricants.”

Honeywell boasted that Solstice L-41 offers a 75 percent reduction in GWP compared to R-410A and is intended to replace R-410A in residential and light commercial air conditioning and heat pump applications. In addition to its lower GWP, Solstice L-41 offers excellent energy efficiency, is cost effective, and can be used in existing equipment designs with minimal changes.

“Honeywell has been working closely with leading equipment manufacturers to optimize Solstice L-41 to meet the demanding requirements of both stationary air conditioning and heat pump applications across a broad range of operating conditions,” said Tom Morris, director of commercial development for Honeywell Fluorine Products. “Solstice L-41 will allow these manufacturers to offer more environmentally friendly air conditioning and heat pump systems to help address climate change.”

Solstice L-41 is based on Honeywell’s HFO-1234ze technology, which was “first introduced in 2008 and has since been proven and commercialized for chillers, insulating-foam, and aerosol applications. A new HFO-1234ze manufacturing plant is currently under construction to meet the needs of equipment manufacturers.”

Even with its involvement with R-32 in some applications, Danfoss was waving the HFO flag. The company used a press conference to announce its involvement with HFO-1234ze in its Turbocor line and the commercialization of TG310 compressors, which were released as a developmental prototype in early 2012. The company said the compressors “utilize the ultra-low GWP, zero ozone depletion potential (ODP) refrigerant HFO-1234ze.”

Safety First


As the HFO sector evolves it is becoming clear that there are HFOs with A1 (nonflammable) safety ratings and those that have A2L (slightly flammable) safety ratings. A1s generally carry higher GWPs than A2Ls. This means the sector will have to sort itself out. If regulations set especially low GWP maximums, only A2Ls would be allowed to establish a beachhead; which would require UL certification, as well as building code modifications, for the installation of such equipment in certain portions of the country.

One HFO topic that appears to be sorting itself out is in the automotive sector. After automaker Daimler expressed some safety concerns over the use of HFO-1234yf in vehicle air conditioners last fall, General Motors issued a statement at the time of the expo pledging to move ahead with the use of that HFO in its vehicles — saying that in all its testing, the refrigerant proved safe and effective.

HCs and CO2


A number of manufacturers showed equipment for natural refrigerants such as HCs and especially CO2 at the expo.

During a Danfoss press briefing, Scott Martin, director of sustainable technologies, Hill Phoenix, spoke about CO2 developments that his company has been doing in conjunction with Danfoss. He said that his company’s systems that utilize CO2 technology offer several distinct advantages over traditional DX-refrigeration systems. “These CO2 sub-critical systems deliver superior refrigeration performance with enhanced sustainability, reduced refrigerant-charge requirements, and greatly reduced refrigerant-leak rates. Simply, they are the most energy-efficient and environmentally friendly refrigeration systems available in the industry today.”

He also noted advances in CO2 in transcritical-application use of which are growing in North America. That was reinforced on the show floor at the Bitzer booth where a transcritical-CO2 compressor was displayed.

The editors of the European-based online publication R744.com also walked the floor at AHR and provided a viewpoint for its global readership regarding the future direction of CO2 use in the United States.

“The pure number of booths displaying CO2 refrigerant components and systems has not significantly increased from last year’s trade show. However, the showcase of breakthrough innovations, prototypes, and optimized product lines in R-744 (CO2) compressors, heat pumps, or air conditioners, as well as commercialization announcements expected for the next 12 months are all solid indicators that the U.S. market is getting serious about R-744.”

Thursday, August 9, 2012

Global Expansion Continues With US Deal

The Bristol Post
Michael Ribbeck
August 8 2012

A-Gas buys disposal specialist

A company based in Portishead which specializes in supplying gases used in refrigeration has just completed its fourth takeover this year.

A-Gas has gone on its acquisition spree as part of a strategy to expand into international markets.

The firm is already one of the world's largest suppliers of refrigerated gases, environmental services and specialty gases and chemicals.

The company, which also has offices in Bristol, has bough United States based RemTec International in its latest deal. The firm specializes in disposing of harmful gases.

The value of the deal was not made public but it took place with support from private equity specialist LDC, which invested in the firm in April 2011.

RemTec was set up in 1986 and provides products and services inolved in managing Ozone Depleting Substances (ODS) and substances high in Global Warming Potential (GWP) across the world. 

As part of the expansion plan A-Gas has now got a presence in the Middle East, China, Australia and India as well as Latin America.

RemTec has contracts with organizations all over the world to remove, recycle and remarket halocarbons.

The acquisition of RemTec follows on from similar acquisitions of Australian-based Technochem in March and SA Rural in May, and UK based A-Zone Technologies in April.

John Rutley, chairman of A-Gas International, said, "The acquisition of RemTec is another great example of our ambition to grow the business on a global scale."

"RemTec brings a market leadership position in Halons and a strong platform for growth in refrigerants; we believe that there is real scope to build further upon RemTec's success to date in North America, whilst also driving value across the enlarged group."

Ian Podmore of LDC added: "2012 has been an exceptionally busy year to date for A-Gas. RemTec is the fourth strategic acquisition completed by the business this year and not only strengthens their existing position in the global refrigerant market but also gives the business real scale within the USA."

"The transaction brings many strategic benefits to A-Gas and is part of an agreed strategy to rapidly expand and build the business both through organic investment and bolt-on acquisitions. We will continue to work closely with the team to drive their amitious growth plans."

Yann Souillard, managing director of LDC South Region, added: "LDC's South team has worked in close conjunction with the management team to support their ambitious 'buy and build' growth strategy. As part of our investment commitment, LDC works closely with our investment portfolio to provide expertise and follow-on funding when the right target companies become available."

West Gas Firm Expands With Buying Spree

Western Daily Press
9 August 2012

A company based in Portishead which specializes in supplying gases used in refrigeration has just completed its fourth takeover this year.

A-Gas has gone on its acquisition spree as part of a strategy to expand into international markets.

The firm is already one of the world's largest suppliers of refrigerated gases, environmental services and specialty gases and chemicals.

The company, which also has offices in Bristol, has bough United States based RemTec International in its latest deal. The firm specializes in disposing of harmful gases.

The value of the deal was not made public but it took place with support from private equity specialist LDC, which invested in the firm in April 2011.

RemTec was set up in 1986 and provides products and services inolved in managing Ozone Depleting Substances (ODS) and substances high in Global Warming Potential (GWP) across the world. 

As part of the expansion plan A-Gas has now got a presence in the Middle East, China, Australia and India as well as Latin America.

RemTec has contracts with organizations all over the world to remove, recycle and remarket halocarbons.

The acquisition of RemTec follows on from similar acquisitions of Australian-based Technochem in March and SA Rural in May, and UK based A-Zone Technologies in April.

John Rutley, chairman of A-Gas International, said, "The acquisition of RemTec is another great example of our ambition to grow the business on a global scale."