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Title:
HEAT EXCHANGER EVALUATING DEVICE, HEAT EXCHANGER EVALUATING METHOD, HEAT EXCHANGER MANUFACTURING METHOD, AND HEAT EXCHANGER DESIGNING METHOD
Document Type and Number:
WIPO Patent Application WO/2017/159515
Kind Code:
A1
Abstract:
The present invention prevents a refrigerant from accumulating in a refrigerant flow path in a heat exchanger as much as possible. This evaluating device is for a heat exchanger including: a heat exchanging unit which causes a refrigerant to circulate through a plurality of multistage refrigerant flow paths arranged in the vertical direction, and performs heat exchange between the refrigerant and air; a refrigerant header through which a gas phase refrigerant circulates and to which one end side of each of the plurality of refrigerant flow paths is connected; a plurality of capillary tubes which are connected to the respective other end sides of the plurality of refrigerant flow paths; and a distributor which joins the plurality of capillary tubes at a joining position. The evaluating device is provided with a determining unit that determines, for each of the refrigerant flow paths, whether or not the refrigerant accumulates in the heat exchanging unit on the basis of the relationship among the vertical height of the refrigerant flow path at an outlet of the heat exchanging unit, a first pressure loss (Pri) of the refrigerant in the refrigerant flow path of the heat exchanging unit, a second pressure loss (Pci) of the refrigerant in the corresponding capillary tube, and a vertical height (hi) from the lower end of the heat exchanging unit to the vertically lowermost refrigerant flow path.

Inventors:
KURACHI MASAYA (JP)
OMURA MINEMASA (JP)
ISOZUMI SHINICHI (JP)
MITOMA KEISUKE (JP)
Application Number:
JP2017/009351
Publication Date:
September 21, 2017
Filing Date:
March 09, 2017
Export Citation:
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Assignee:
MITSUBISHI HEAVY IND THERMAL SYSTEMS LTD (JP)
International Classes:
F25B39/00; F25B41/00; F25B49/02; F28D1/04
Domestic Patent References:
WO2014080496A12014-05-30
WO2014132650A12014-09-04
Foreign References:
JP2014025673A2014-02-06
JP2015214945A2015-12-03
JP3985831B22007-10-03
Other References:
See also references of EP 3431904A4
Attorney, Agent or Firm:
FUJITA, TAKAHARU (JP)
Takaharu Fujita (JP)
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