RU94045229A - Working medium being safety in respect to ozone
- Google Patents
Working medium being safety in respect to ozone
Info
Publication number
RU94045229A
RU94045229ARU94045229/04ARU94045229ARU94045229ARU 94045229 ARU94045229 ARU 94045229ARU 94045229/04 ARU94045229/04 ARU 94045229/04ARU 94045229 ARU94045229 ARU 94045229ARU 94045229 ARU94045229 ARU 94045229A
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
FIELD: working agent for refrigerating systems and heat pumps. SUBSTANCE: proposed working azeotropic mixture contains 1,1,2,2-tetrafluoroethane and carbohydrate. Pure butane or pentane or binary mixture of n-butane and isobutane or of n-pentane and isopentane are used as said carbohydrate, its quantity being 5-80 mol %. EFFECT: improves efficiency, decreases boiling point of working agent at gage pressure.
Claims (1)
Озонобезопасная азеотропная смесь, которая может использоваться в качестве рабочего тела рефрижераторных систем (РС) и тепловых насосов (ТН). Рабочая смесь включает 1,1,1,2-тетрафторэтан (R134а) и углеводород. В качестве углеводорода выбраны либо чистые вещества бутан или пентан, либо бинарные смеси н-бутана и изобутана или н-пентана и изопентана при содержании углеводорода в составе рабочей смеси 5 - 80 мол.%. Применение этой рабочей смеси позволяет увеличить удельную объемную производительность при неизменном эксергетическом КПД и перепаде давлений в РС или ТН. Вместе с тем, использование такого рабочего тела позволяет понизить температуру кипения при избыточном давлении, например, в рефрижераторных системах ниже 250 К.Ozone-safe azeotropic mixture that can be used as a working fluid of refrigeration systems (RS) and heat pumps (VT). The working mixture includes 1,1,1,2-tetrafluoroethane (R134a) and a hydrocarbon. As the hydrocarbon, either pure butane or pentane or binary mixtures of n-butane and isobutane or n-pentane and isopentane were selected with a hydrocarbon content of 5 to 80 mol%. The use of this working mixture allows to increase the specific volumetric productivity with a constant exergy efficiency and pressure drop in the PC or VT. At the same time, the use of such a working fluid makes it possible to lower the boiling point at excess pressure, for example, in refrigerated systems below 250 K.
RU94045229A1994-12-261994-12-26Ozone-safe working fluid
RU2072382C1
(en)
Mixtures of 1,1,1-trifluoroethane, perfluoropropane and propane, and their applications as refrigerant fluids, as aerosol propellants or as blowing agents for plastic foams
Improvement to mixture of refrigerant gases based on hydrocarbons in order to obtain greater efficiency in air conditioning and refrigeration compression systems