US 12,066,232 B2
Automatic maintenance and flow control of heat exchanger
Zeljko Terzic, Toronto (CA); Redmond Hum, Toronto (CA); Marcelo Javier Acosta Gonzalez, Toronto (CA); and Ritesh Patel, Toronto (CA)
Assigned to S. A. Armstrong Limited, Toronto (CA)
Appl. No. 17/041,241
Filed by S. A. Armstrong Limited, Toronto (CA)
PCT Filed Dec. 5, 2018, PCT No. PCT/CA2018/051555
§ 371(c)(1), (2) Date Sep. 24, 2020,
PCT Pub. No. WO2020/069593, PCT Pub. Date Apr. 9, 2020.
Claims priority of provisional application 62/741,943, filed on Oct. 5, 2018.
Prior Publication US 2021/0140695 A1, May 13, 2021
Int. Cl. F25B 49/02 (2006.01); F25B 25/00 (2006.01); F28F 27/00 (2006.01)
CPC F25B 49/027 (2013.01) [F25B 25/005 (2013.01); F25B 2339/047 (2013.01); F25B 2400/06 (2013.01); F25B 2400/13 (2013.01); F25B 2600/0253 (2013.01); F25B 2700/21161 (2013.01); F25B 2700/21171 (2013.01); F28F 27/00 (2013.01)] 38 Claims
OG exemplary drawing
 
1. A heat transfer system for sourcing a variable load, comprising:
a heat exchanger that defines a first fluid circuit and a second fluid circuit;
a first variable control pump for providing variable flow of a first circulation medium through the first fluid circuit of the heat exchanger;
a second variable control pump for providing variable flow of a second circulation medium through the second fluid circuit of the heat exchanger;
at least one pressure sensor or at least one temperature sensor configured to detect measurement at the heat exchanger; and
at least one controller configured to:
receive data indicative of measurement from the at least one pressure sensor or the at least one temperature sensor,
control the first variable control pump to control the first circulation medium through the heat exchanger in order to source the variable load,
determine, based on the data from the at least one pressure sensor or the at least one temperature sensor from real-time operation measurement when sourcing the variable load, that the heat exchanger requires maintenance due to fouling of the heat exchanger, and
in response to said determining, control the first variable control pump, during real-time sourcing of the variable load, to a first flow amount of the first circulation medium in order to flush the fouling of the heat exchanger, wherein the first flow amount includes a maximum flow setting, and simultaneously control the second variable control pump to a decreased flow amount to account for the maximum flow setting of the first flow amount in order to source the variable load.