The unit is competent of generating R290, R600a
and R600 with a least purity of 99.
The minibar is fitted with cyclopentane insulation and climate-friendly refrigerant R600a
, making it up to 60% more efficient in terms of energy savings compared to standard minibars.
As we can see, the heat capacity depends on mass flow capacity of refrigerant R600a
Os ensaios realizados com R600a
apresentam os menores valores para o coeficiente de atrito enquanto que os ensaios conduzidos ao ar induzem os maiores valores (234% maiores).
More recently there has been a switch to a refrigerant called R600a
, which doesn't affect the ozone, nor is it a significant greenhouse gas.
Yang Mianmian and colleagues from the Hater Group in Qingdao, China, devoted a paper to the servicing of R600a
(isobutane) refrigerators, which it has produced since 1995 for the Chinese market.
to use the R600A
refrigerant, which has a lower global warming impact than commonly used refrigerants today.
Source - CIBSE [k] Refrigerant Global Warming Potential 100 Year Time Horizon (GWP100) R11 (CFC-11) 4000 R12 (CFC-12) 8500 R22 (HCFC-22) 1700 R123 (HCFC-123) 93 R134a (HFC-134a) 1300 R404A (HFC-404A) 3800 R407C (HFC-407C) 1600 R410A (HFC-417A) 1900 R417A (HFC417A) 1950 R290 (propane) 3 R600a
(isobutane) 3 R717 (ammonia) 0 R744 (Carbon 1 Dioxide)
2 gives indicated diagram obtained for analysed compressor working with R600a
at ASHRAE test conditions.