Patent ID: 11879687
Assignee: JGC CORPORATION
Field: Chemical engineering (Chemistry)
Classification: CPC F  G | IPC F

Claim 0:
1. A method of designing a heat exchanger group by a computer to obtain a designed heat exchanger group, wherein the designed heat exchanger group indicates an arrangement of the heat exchanger group to be installed in a processing plant, the processing plant is configured to process fluid to be processed and includes a plurality of air cooled heat exchangers (ACHEs), wherein the plurality of ACHEs are installed on a pipe rack according to the designed heat exchanger group, the method comprising:
a first step of selecting at least one design variable from a design variable group consisting of a design variable relating to a tube bundle to be provided to each of the ACHEs, a design variable relating to each of heat transfer tubes to be included in the tube bundle, and a design variable relating to a fan to be provided to each of the ACHEs as variable parameters, and selecting a number of installed ACHEs in the heat exchanger group as the variable parameters, and setting a variable range of each of the selected variable parameters;
a second step of setting design values of each of the ACHEs, which includes the design variables not selected as the variable parameters in the first step;
a third step of, after the setting of the design values, calculating Pareto solutions for at least two objective functions selected from an objective function group consisting of an installation length of the heat exchanger group when the plurality of ACHEs are arranged in one row, a total heat transfer area of the heat transfer tubes to be included in the heat exchanger group, and a total power consumption of the fans included in the heat exchanger group while changing the variable parameters within the variable range set in the first step; and
constructing the processing plant having the plurality of ACHEs installed on the pipe rack according to the Pareto solutions calculated by the computer for the at least two objective functions selected from the installation length of the heat exchanger group, the total heat transfer area of the heat transfer tubes, and the total power consumption of the fans.