Refrigeration – Processes – Gas and liquid contact
Patent
1998-09-17
1999-04-06
Bennett, Henry
Refrigeration
Processes
Gas and liquid contact
62171, 110345, 236 78D, F28C 100
Patent
active
058903690
ABSTRACT:
Method and apparatus for controlling an evaporative gas conditioning system utilizes a controller for controlling the rate at which liquid is introduced into a conditioning chamber, thereby closely controlling the rate at which temperature within the conditioning chamber is adjusted to a desired temperature. Nozzle characteristics of a plurality of different nozzle types are stored in a memory associated with the controller, so that when existing nozzles are replaced with a different nozzle type, an operator can select the new nozzle type, and data stored in memory will be retrieved to permit efficient control of the system without the necessity for manual reconfiguration. Additionally, spray nozzles for spraying water into the conditioning chamber of the system are organized into banks of nozzles, and the banks of nozzles are controlled to maintain optimum water flow through each nozzle, and to evenly distribute the water into the conditioning chamber. Additionally, steady state or stable operation of the system is monitored and data indicative of operating conditions during stable operation, for various conditions, are stored in memory. Upon a change in conditions, such as from a mill on to a mill off condition, data indicative of stable operation with respect to said operating condition retrieved, and utilized in controlling system 10, particularly, in controlling the volume of liquid introduced into the conditioning chamber, to thereby drastically reduce the transition time associated with a change in mill on/mill off condition.
REFERENCES:
patent: 3672182 (1972-06-01), Stowasser et al.
patent: 5074226 (1991-12-01), Lynch
patent: 5676071 (1997-10-01), Horler et al.
Hummell Robert
Johnston David F.
Mahableshwarkar Anand
Mahler Michael M.
Bennett Henry
BHA Group Holdings, Inc.
Tinker Susanne C.
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