The Future of Refrigerants:
Where Do We Go From
Here?
Mike Thompson
Director of Environmental Affairs
Trane Commercial Systems
Trane 2009 ©
Options For HVAC Refrigerants
Fluorocarbons
Ozone Depleters
(Montreal Protocol)
Class 1
High ODP
CFC’s
GWP
ODP
GWP
ODP
GWP
ODP
GWP
ODP
ODP
GWP
R-11
R-12
R113
R-500
Non- Ozone Depleters
(Kyoto Protocol)
Class 2
Low ODP
HCFC’s
GWP
ODP
ODP
“Natural” Refrigerants
R-22
R-123
-ODP Concerns
-GWP Concerns
- Flammable
Higher GWP
R-134a
GWP
R-410A
GWP
R-407C
GWP
Lower GWP
R-32
R-152a
Propane
Butane
CO2
Ammonia
-Toxicity Concerns
-Efficiency Concerns
-Cost Concerns
Trane 2009 ©
Timeline of Refrigerant Usage
Montreal Protocol Signed
All CFC production
Stopped (R-11,R-12) in
developed countries
1990
2000
Kyoto Protocol Signed
No new R-22 for service
No new equipment with R-123
in developed countries
No new R-123 for service
in developed countries, no
HCFC’s in new equipment
in developing countries
No CFC’s for
developing
countries
2010
2020
No automotive use of
R-134a in Europe
Today
No new equipment
with R-22
2030
No HCFC production in
developing countries
2040
2050
Continued use of recycled R-22,
R-123 for developing countries
Continued use of recycled R-123
Continued use of recycled R-22
Continued use of recycled CFC’s
Note: Included in the use of “recycled” refrigerants is also the use of stockpiled supplies of the refrigerant produced before
the phase out date. In addition, there is no restriction on the importation of recycled and recovered supplies of refrigerants.
Trane 2009 ©
Kyoto Protocol
Greenhouse Gas Coverage


Six (6) Gases

Carbon Dioxide -- CO2

Methane -- CH4

Nitrous Oxide -- N2O

Hydrofluorocarbons -- HFCs

Perfluorocarbons -- PFCs

Sulfur hexafluoride -- SF6
Base Period

1990 for CO2 , CH4 , and N2O

1990 or 1995 for HFCs, PFCs, and SF6
Trane 2009 ©
European HFC Restrictions

Denmark



Austria


HFC ban on HVAC equipment, appliances and cars in 2008, except if factory charge is
<20kg of refrigerant
Switzerland




General HFC ban in 2006
HFC ban on HVAC equipment in 2007, except if the factory refrigerant charge is <10kg
for cooling applications or <50 kg for heat pump applications
Domestic Refrigeration HFC Ban - 2003
Air Conditioners HFC Ban - 2005
Mobile Air Conditioning HFC Ban – 2008
F-Gases Directive on car air conditioning


No new vehicles containing F-gases, with a GWP greater than 150, in 2011
Prohibit sale of vehicles containing F-gases, with a GWP greater than 150, in 2017
Trane 2009 ©
Country GHG Cap & Trade Legislation

Japan




New Zealand Cap & Trade (Legislation in process)



Six gases including HFCs
All sectors
Australia Cap & Trade (Legislation in process)




GHG emissions reduction target of 60-80% by 2050
Will start trial cap & trade program fall of 2008
Govt pressure on GHGs, including HFCs, against industries desires
Five gases
Separate HFC regulation (25% below 2000 levels by 2020)
HFC regulations begin in 2011
European Union (27 countries) - 2008


CO2 only cap and trade, utilities & large industrials
HFCs under regulatory pressure
Trane 2009 ©
US Legislative Efforts


American Clean Energy and Security Act of 2009 (aka:
Waxman-Markey Bill)

Uses the average of 2004, 2005, 2006 production as a baseline for HFC production
(weighted HCFC and HFC volumes)

10% below average in 2012

33% below average in 2020

75% below average in 2030

85% below average in 2033
US State Department Proposal to UNEP

Reduce to 2005 levels by 2012

10% reduction by 2015

25% reduction by 2020

50% reduction by 2030

85% reduction by 2039

Developing countries to follow developed countries by 10 years
Trane 2009 ©
Trane 2009 ©
Full Load Vs Part Load


Both full and part load efficiency are important

Full Load- Demand/Building new power plants

Part Load- Total kWh consumption
Trane technology optimizes for both

Multiple stage chiller gives great part load performance

VFD’s have great part load for the right application

Focus on the efficiency of the system
Trane 2009 ©
Environmental Impact of Refrigerants
Ozone Depletion Potential (ODP)
Global Warming Potential (GWP)
1
0.9
12000
10000
0.7
GWP (CO2= 1.0)
ODP(R-11=1.0)
0.8
0.6
0.5
0.4
0.3
0.2
8000
6000
4000
2000
0.1
0
0
CFC11
CFC- HCFC- HCFC- HFC12
22
123
134a
HFC410A
HFC407C
HFC245fa
CFC11
Energy Efficiency (COP)
CFC12
HCFC- HCFC22
123
HFC134a
HFC410A
HFC407C
HFC245fa
Atmospheric Life (years)
80
Years
COP
100
6.8
6.6
6.4
6.2
6
5.8
5.6
5.4
60
40
20
CFC11
CFC- HCFC- HCFC- HFC12
22
123
134a
HFC410A
HFC407C
HFC245fa
0
CFC11
CFC- HCFC- HCFC- HFC12
22
123
134a
HFC410A
HFC-
HFC-
407C 2009
245fa
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©
ODP versus GWP
CFC-11
12
113
114
115
HCFC-22
123
124
141b
142b
HFC-32
125
134a
143a
152a
227ea
236fa
245fa
1.0
0.8
0.6
0.4
0.2
ODP (relative to R-11)
0.0
2000 4000 6000 8000 10000
GWP (relative to CO2)
J. M. Calm and G. C. Hourahan, “Refrigerant Data Summary,” Engineered Systems,
18(11):74-88, November 2001 (based on 1998 WMO and 2001 IPCC assessments)
© JMC 2001
Trane 2009 ©
Chiller Operating Pressure
310.0
Condenser (100°F)
Operating Pressure (psig)
270.0
230.0
Off Line (72°F)
Evaporator (38°F)
190.0
150.0
110.0
70.0
30.0
-10.0
R-11
R-123
R-12
R-134a
R-22
R-410A
Trane 2009 ©
What Is Important Over
the Life of a Chiller?
Cost of Energy (94.5%)
First Cost of Chiller (5.18%)
Cost of Initial Charge
Of Refrigerant (0.25%)
Refrigerant Added
Over 30 years (0.04%)
Trane 2009 ©
Trane 2009 ©