The scroll technology is more and more standard in the refrigeration,air conditioning and heat pump systems. The important role plays the choice of the refrigerant corresponding to the purpose of a cooling(heating) circuits.There are wide offer of different refrigerants on the market.The each one refrigerant has its own plus and minus aspects why to use it.The real working condition,temperatures and pressures play important roles beside the character of the work of a device.The scroll design has some typical characteristics influencing the performances of a system.To use the optimum choice means to use the corresponding refrigerant also.The comparison of different scroll types and different refrigerant is discussed.
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