Page 107 - GRIHA Manual Volume IV - Introduction to National Rating System
P. 107
98 Griha Manual: Volume 4
Trichlorofluoromethane (R11) is used as reference for measuring the ODP (Ozone Depleting
Potential) of a substance. The ODP of some commonly used substances in refrigerating and air-
conditioning equipment are listed in Table 1.
Table 1 Technology options for phase out in refrigeration and air-conditioning sector
Sub-sector ODS used presently Preferred alternatives/substitutes
Domestic refrigerators Refrigerant-CFC-12 HFC-134a, Isobutane, HC blend Drop-in
HFC/HCFC, HC blends(for servicing)
Foam blowing-CFC-11 Cyclopentane, HCFC-141b, HFC-245fa,
methyl formate, methylal
Refrigerated cabinets (deep freezer, ice- Refrigerant-CFC 12 HFC-134a, Blends of HC-290 and HC-
cream cabinets, bottle coolers, visi coolers) 600a
Foam blowing-CFC 11 HCFC-141b, cyclopentane, HFC-245fa,
methyl formate, methylal
Water coolers CFC-12 HFC-134a, Blends of HC-290 and HC-
600a
HCFC-22 (for bigger capacity) HC-290, R-407C, R-410A
Central AC plants CFC-11, CFC-12 HFC-134a, HCFC-123, HCFC-124, HC-60a
HCFC-22 Ammonia, R-410A, R-407C, HC-290
Room AC HFCF-22, CFC-12 R-410A, HC-290
Packaged AC HCFC-22 R-410A, R-407C, HC-290
Source 2009. The Montreal Protocol: India’s success story. Ozone Cell, Ministry of Environment and Forests, Government of India.
Table 2 Technology options for phase out in foam sector
Sub-sector ODS used at present Preferred alternatives/ Long-term technology
substitutes
Flexible PUF slabstock CFC-11
Methylene chloride Water-based
Flexible moulded PUF Water blown technology
Rigid PUF (general insulation HCFC-141b, cyclopentane, Hydrocarbons, water, methyl
other than refrigeration) methyl formate, Methylal formate, and methylal
HCFC-free systems (water
Thermoware HCFC-141b blown), methyl formate,
methylal
Integral skin PUF HCFC-141b Hydrocarbons, water, methyl
formate, and methylal
Foams
-EPE/EPPN foams
-EPS foams CO 2 -
Phenolic Foams Hydrocarbons Hydrocarbons, methyl formate,
and Methylal
Thermoplastic Hydrocarbons Hydrocarbons, methyl formate,
and Methylal
Source 2009. The Montreal Protocol: India’s success story, Ozone Cell, Ministry of Environment and Forests, Government of India.
Trichlorofluoromethane (R11) is used as reference for measuring the ODP (Ozone Depleting
Potential) of a substance. The ODP of some commonly used substances in refrigerating and air-
conditioning equipment are listed in Table 1.
Table 1 Technology options for phase out in refrigeration and air-conditioning sector
Sub-sector ODS used presently Preferred alternatives/substitutes
Domestic refrigerators Refrigerant-CFC-12 HFC-134a, Isobutane, HC blend Drop-in
HFC/HCFC, HC blends(for servicing)
Foam blowing-CFC-11 Cyclopentane, HCFC-141b, HFC-245fa,
methyl formate, methylal
Refrigerated cabinets (deep freezer, ice- Refrigerant-CFC 12 HFC-134a, Blends of HC-290 and HC-
cream cabinets, bottle coolers, visi coolers) 600a
Foam blowing-CFC 11 HCFC-141b, cyclopentane, HFC-245fa,
methyl formate, methylal
Water coolers CFC-12 HFC-134a, Blends of HC-290 and HC-
600a
HCFC-22 (for bigger capacity) HC-290, R-407C, R-410A
Central AC plants CFC-11, CFC-12 HFC-134a, HCFC-123, HCFC-124, HC-60a
HCFC-22 Ammonia, R-410A, R-407C, HC-290
Room AC HFCF-22, CFC-12 R-410A, HC-290
Packaged AC HCFC-22 R-410A, R-407C, HC-290
Source 2009. The Montreal Protocol: India’s success story. Ozone Cell, Ministry of Environment and Forests, Government of India.
Table 2 Technology options for phase out in foam sector
Sub-sector ODS used at present Preferred alternatives/ Long-term technology
substitutes
Flexible PUF slabstock CFC-11
Methylene chloride Water-based
Flexible moulded PUF Water blown technology
Rigid PUF (general insulation HCFC-141b, cyclopentane, Hydrocarbons, water, methyl
other than refrigeration) methyl formate, Methylal formate, and methylal
HCFC-free systems (water
Thermoware HCFC-141b blown), methyl formate,
methylal
Integral skin PUF HCFC-141b Hydrocarbons, water, methyl
formate, and methylal
Foams
-EPE/EPPN foams
-EPS foams CO 2 -
Phenolic Foams Hydrocarbons Hydrocarbons, methyl formate,
and Methylal
Thermoplastic Hydrocarbons Hydrocarbons, methyl formate,
and Methylal
Source 2009. The Montreal Protocol: India’s success story, Ozone Cell, Ministry of Environment and Forests, Government of India.
