公开(公告)号：US12276991B2

公开(公告)日：2025-04-15

申请号：US17550444

申请日：2021-12-14

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Sami El Ferik ,  Mustafa Al-Nasser ,  Rached Ben Mansour ,  Mohammed Ahmed Mohammed Eltoum

IPC: F28D7/00 ,  G05B15/02 ,  G05D23/19 ,  G06F17/11 ,  G06F119/08 ,  G06N7/02

Abstract: This disclosure presents methods and systems of controlling a counter flow double pipe heat exchanger (DPHE) that includes a hot fluid pipe and a cold fluid pipe. In a method, a temperature error between a reference temperature and a temperature at an outlet of the hot fluid pipe of the counter flow DPHE is determined. A cold fluid mass flow rate is determined from an output of a proportional-integral-derivative (PID) controller based on the temperature error being input to the PID controller. The cold fluid mass flow rate is used for a cold fluid in the cold fluid pipe of the counter flow DPHE. The temperature error is controlled within a predefined range by utilizing parameters of the PID controller that are set by using a harmony search algorithm (HSA) to obtain a minimization of a cost function.