Heat exchange – Regenerator – Checker brick structure
Patent
1992-08-17
1994-06-07
Ford, John K.
Heat exchange
Regenerator
Checker brick structure
165 22, 165 16, 165 50, 165 53, 454266, 454269, 236 13, 236 493, F25B 2900, F24F 1304, F24F 308
Patent
active
053180992
ABSTRACT:
A method and apparatus for emulating a perimeter induction unit, in which the perimeter induction unit is replaced by an emulation unit carried in a plenum above the space to be heated or cooled. A temperature sensor is mounted within the space, and a computer provides programmed control, either centrally or locally. The emulation unit is connected to the primary air ducts and secondary liquid source formerly used for the perimeter induction unit. It includes a primary air inlet for accepting and regulating a flow of ventilated, preconditioned primary air from the primary air ducts, and a secondary air inlet for accepting a flow of return air from the space as well as filtering the return air and passing it over a heat exchanger carrying secondary cooling liquid at a preselected temperature. Primary and secondary air is mixed within a mixing chamber and delivered to the space by a blower at a preselected combined air volumetric flow rate. A computerized controller implements a control method that allows the system to maintain the space at a selected temperature during summer or intermediate/winter load patterns.
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Ashrae 1984 Systems Handbook, Chapter 4 "Air-and -Water Systems" pp. 4.1-4.8 (1984), Ashrae Atlanta, Georgia.
Ford John K.
Johnson Service Company
Levine E. L.
Root III Joseph E.
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