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Accession number;07A0043223
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| Title;The Study of Saturated Vapor Pressures for HCs. |
| Author;
YADA NAOYUKI
(Kanagawa Inst. Technol., JPN)
NOBORITATE CHIHO
(Odawarajohokukoko)
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Journal Title;Thermophys Prop
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Journal Code:X0031A
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ISSN:0911-1743
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VOL.27th;NO.;PAGE.63-65(2006)
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| Figure&Table&Reference;FIG.5, REF.3 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;CFCs (Chloro-fluoro Carboms) have been stopped for manufacturing and using in 1999. HFCs (Hydro-Chloro-fluoro Carboms) have been used for alternative refrigerant instead of them. But in Kyoto Protocol, HFCs were designated for global warning gas similarly CO2 and CH4 and so on. So that, now the new alternative refrigerants are going to develop and to use inductively as soon as possible. Though HCs (Hydro-Carbons) are seemed danger for the flammability, on developing for seal technology, they are antinational for the new alternative refrigerants. HC-12a, those vapor pressure-curve beehive mean by CFC12 has a possibility for the alternative of HFCs 134a. The vapor pressure-curve of HC-12a has been cleared by Constant volume method in the Temperature ranges from 253K to Critical Temperature. A vapor pressure correlation of HC-12a was developed based on our measurements and Critical Point. The vapor pressure correlation can represent most of the based data within .+-.8%. The uncertainties of measurements for Temperature within .+-.9mK, for Pressure within .+-.10kPa, respectably. (author abst.) |
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