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An evaporator for a refrigerant system having a heat exchanging section and a evaporating section of a total flow type having a bottom inlet tank for receiving a refrigerant from the heat exchanging section, a bottom outlet tank for a discharge of the refrigerant and a stack of flatten pipes, each d

An evaporator for a refrigerant system having a heat exchanging section and a evaporating section of a total flow type having a bottom inlet tank for receiving a refrigerant from the heat exchanging section, a bottom outlet tank for a discharge of the refrigerant and a stack of flatten pipes, each defining a refrigerant passageway of U-shape connecting the bottom inlet tank and bottom outlet tank. The heat exchanging section controls the degree of the dryness of the refrigerant in a range between 0.01 to 0.2. The flattened pipe has an inner thickness in a direction of the stack in a range between 2.0 to 3.0 mm.

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A refrigerating system comprising: a compressor for compressing a refrigerant; a condenser connected to the compressor for condensing the refrigerant from the compressor; a pressure reducer connected to the condenser for reducing a pressure of the condensed gas; an evaporator connected to the pressu

A refrigerating system comprising: a compressor for compressing a refrigerant; a condenser connected to the compressor for condensing the refrigerant from the compressor; a pressure reducer connected to the condenser for reducing a pressure of the condensed gas; an evaporator connected to the pressure reduced for evaporating the refrigerant from the pressure reducer, and; means arranged between the pressure reducer and the evaporator for controlling a degree of dryness of the refrigerant introduced into the evaporator; said evaporator comprising; a stack of flattened tubes defining therein vertically extending heat exchanging passageways; an inlet tank at a bottom of the stack for distributing, into all of said heat exchanging passageways, the refrigerant after having passed through the dryness control means; and an outlet tank at a bottom of the stack for discharging the refrigerant after having passed through the heat exchanging passageways; an arrangement of said dryness control means with respect to the evaporator being such that a value of the degree of the dryness at said inlet tank is in a range between 0.01 to 0.2; and a value of the thickness of each flattened tubes being in a range between 2.0 to 3.0 nm.