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Method for controlling the superheat temperature of the refrigerant in an evaporator arrangement of a refrigeration system or heatpump system, and a device for implementing the method
Method for controlling the superheat temperature of the refrigerant in an evaporator arrangement of a refrigeration system or heatpump system, and a device for implementing the method
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机译:用于控制制冷系统或热泵系统的蒸发器装置中的制冷剂的过热温度的方法以及用于实施该方法的装置
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PCT No. PCT/DK96/00073 Sec. 371 Date May 8, 1998 Sec. 102(e) Date May 8, 1998 PCT Filed Feb. 19, 1996 PCT Pub. No. WO96/26399 PCT Pub. Date Aug. 29, 1996In a method for controlling the superheat temperature (T+E,uml u+EE ) of the refrigerant in an evaporator arrangement (1) of a refrigeration system or heat pump system (1-4), the evaporator arrangement (1), a compressor arrangement (2), a condenser and a controllable expansion valve (4) are arranged in succession in a closed circuit. The superheat temperature (T+E,uml u+EE ) is controlled in dependence on a comparison between desired and actual values. The desired value (W2) of the superheat temperature (T+E,uml u+EE is varied automatically in dependence on the difference (d) from a reference value (W1) of a periodically determined function (S) of a number of sampled values of a temperature (T1; T2) of the refrigerant with the aim of a stable control of the superheat temperature (T+E,uml u+EE ). To achieve optimum filling and to optimize the superheating in such systems, provision is made for the said function (S) to characterize the variability of a number of sampled values of the temperature (T2) of the refrigerant at the output of the evaporator arrangement (4) about a mean value of the sampled values.
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