Heat exchanger for condensing vapor containing non-condensable g

Details Heat exchanger for condensing vapor containing non-condensable g Heat exchanger for condensing vapor containing non-condensable g

1988-03-14

1989-03-28

Ostrager, Allen M.

Power plants

Motive fluid energized by externally applied heat

Process of power production or system operation

60671, 60692, 165111, F01K 2508

Patent

active

048152960

ABSTRACT:
A heat exchanger for condensing a vapor containing non-condensable gases comprises an inlet header for receiving said vapor and non-condensable gases, and a plurality of heat exchanger tubes arranged in a plurality of vertically spaced banks. One end of each tube is connected to the inlet header for receiving the vapor and the non-condensable gases in parallel; and the other end of each tube in a bank is connected to a separate header associated with each bank. Each separate header is vented for venting non-condensable gases therein to the atmosphere. The provision of separate headers for each bank of tubes prevents equalization of pressure between the banks thereby preventing back-flow and the creation of pockets of non-condensable gases in the tubes of a bank. Where the banks of tubes are inclined to the horizontal, and the separate headers are elevated above the inlet header, the non-condensable gases in a bank, flow rapidly upwardly into the separate header with which the bank is associated, particularly when the gases are lighter than the vapor. This permits the non-condensable gases to be vented easily as the condensate flows downwardly into the inlet header.

REFERENCES:
patent: 3556204 (1979-01-01), Dehne
patent: 4177859 (1979-12-01), Gatti et al.
patent: 4190102 (1980-02-01), Gerz
patent: 4471621 (1984-09-01), Anir et al.

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