Patent ID: 11867436
Assignee: THE CHEMOURS COMPANY FC, LLC
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A vapor compression heat transfer system, comprising:
a. a closed circulation loop containing a fluoroolefin working fluid composition for circulation therein, said loop at least comprising, in fluid communication, a dual-row evaporator, a compressor, a dual row condenser, and an intermediate heat exchanger (IHX),
(i) said dual-row evaporator comprising, a front row and a back row,
(a) said front and back rows respectively having a first and a second set of discrete, serially connected tanks arranged to provide countercurrent flow along a first axis, a first tank of said first set has a feed end with an inlet, and a second tank of said second set has a discharge end with an outlet, and
(b) a collector arranged along a fourth axis orthogonal to said first axis and fluidly connecting a second tank of said first set with a first tank of said second tank to convey fluoroolefin working fluid from said front to said back row;

(ii) said dual-row condenser having:
(a) a back row having a first manifold for receiving and distributing the fluoroolefin working fluid to a plurality of channels for conveying the fluoroolefin working fluid to a downstream second manifold in only a first direction along a third axis, and
(b) a front row comprising first, second and third sections connected for serial flow, a first one said sections located at an upper portion of said front row providing flow only in a second direction opposite to said first direction, an intermediate section providing flow in only a third counter-current direction, and a distal subcooling section located at a lower portion of said front row providing flow in only said second direction and having an outlet for discharging subcooled fluoroolefin working fluid, wherein each section of said front row comprises a plurality of tubes; and

b) said IHX comprising:
i. a first tube having an inlet connected to said outlet of said subcooling section of said condenser, and an outlet connected to and in flow communication with said feed end inlet of said first tank, and
ii. a second tube having an inlet connected to said outlet at said discharge end, and an outlet connected to said compressor inlet, wherein said first and second tubes of said IHX are in thermal contact with one another.