HEAT EXCHANGER Russian patent published in 2008 - IPC F28D9/00 C10K3/00 

FIELD: heating.

SUBSTANCE: inventions are intended for heat exchange process and may be used in industry including systems based on heating elements. Method of recuperative heat exchanger operation includes the following operations: flowing of fluid 1 in passage 1 of flow channel 1; flowing of fluid 2 in passage 2 of flow channel 2. Passage 2 of flow channel 2 is adjacent to passage 1 of flow channel 1. Fluid 1 and 2 temperatures approach to each other or achieve common value at passages outlets at maximum operating mass flow rate. Flowing of fluid 1 in passage 2 of flow channel 1 or recuperative heat exchanger after fluid 1 flowing in passage 1 of flow channel 1 and fluid 2 flowing in passage 1 of flow channel 2 of recuperative heat exchanger before fluid 2 flows in passage 2 of flow channel 2. Fuel processing system with proton-exchanging membrane contains automatic thermal reforming plant, reactor for water gas conversion, recuperative heat exchanger including flow channels 1 and 2. Besides, flow channel 1 is connected with the system before automatic thermal reforming plant whereas flow channel 2 is connected with the system after automatic thermal reforming plant but before reactor for water gas conversion. Fuel processing plant operation method includes the following operations: air and fuel mixture flowing in channel 1 of recuperative heat exchanger into automatic thermal reforming plant, reforming product flowing from automatic thermal reforming plant into channel 2 of recuperative heat exchanger, supply of fuel and air mixture from flow channel 1 into automatic thermal reforming plant, supply of reforming product from flow channel 2 into reactor for water gas conversion. Combined unit for fuel processing system contains recuperative heat exchanger and automatic thermal reforming plant.

EFFECT: simplification of heat exchanger design, reduction of costs, and improvement of reliability.

10 cl, 12 dwg