Heat exchange – Flow passages for two confined fluids – Interdigitated plural first and plural second fluid passages
Patent
1983-10-24
1985-12-03
Husar, Stephen F.
Heat exchange
Flow passages for two confined fluids
Interdigitated plural first and plural second fluid passages
165164, F28D 702
Patent
active
045561052
ABSTRACT:
A parallel plate air-to-air counterflow heat exchanger employs a parallel array of spaced plates of similar elongated hexagonal shape. A pair of inlet and outlet ducts is connected to each lengthwise pointed end of the array. Each duct communicates with alternate airways via rectangular openings staggered on opposite sides of the ends of the array. The ducts extend parallel to a lengthwise midline of the array to enable air flow through the heat exchanger and ducts with minimal change of momentum and turbulence. The plates each have parallel widthwise margins which are oppositely rolled to different, complementary radii and adjacent plates are mutual mirror images. The plate margins nest together to interconnect the plates and enclose one side of each airway. A housing around the array encloses the opposite side of each airway. Opposite margins of the pointed end portions of the plates are rolled oppositely to interlock the plates, to define the staggered rectangular openings of their respective adjoining plate margins, and smoothly to divide and recombine the airflows into and out of each airway. A standard plate size is used and the number of plates is varied to accommodate different total volumes of airflow.
REFERENCES:
patent: 1740145 (1929-12-01), Bates
patent: 2019351 (1935-10-01), Lathrop
patent: 2937856 (1960-05-01), Thomson
patent: 2959400 (1960-11-01), Simpelaar
patent: 3581649 (1971-06-01), Rauenhorst
patent: 4184538 (1980-01-01), Rauenhorst
patent: 4343355 (1982-08-01), Goloff et al.
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