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Heat exchanger system having adjustable heat transfer capacity
New Patents
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denses over the surfaces of the inner tubes to transfer heat to the heated fluid flowing through the inner tubes. Each evaporating space is partitioned into many sections by baffle plates to enhance the heat flux in the evaporating space. The evaporating spaces are connected to manifold plenums and the manifold plenums are connected to damage detecting systems and heat transfer medium maintenance systems.
4887436 DEFROSTING SYSTEM FOR A HEAT EXCHANGER Toshihiko Enomoto, Yasuo Nakashima, Takashi Watanabe, Takao Komai, Tatsuya Mochizuki, Shizuoka, Japan assigned to Mitsubishi Denki Kabushiki Kaisha
A heat exchanger for a turbine generator power plant includes a plurality of heat transfer tubes for transferring heat from a primary fluid cooling system to a secondary water cooling system subject to variations in inlet temperature and the presence of emulsified particles. Upon a reduction in flow rate in the secondary system, as when accommodating a reduced inlet temperature, a reusable plug assembly comprising compression-actuated cap and plug members is installed on the ends of a selected portion of the heat transfer tubes to increase flow through the remaining heat transfer tubes and thereby reduce the tendency toward sedimentation of the impurities in the tubes. An alternative construction of the plug assembly allows the assembly to be installed with access to only one end of the heat transfer tubes.
4889O58 HEAT RECOVERY B O I L E R
A defrosting system for a heat exchanger includes a temperature detector arranged adjacent to the exchanger, a temperature memory for storing temperature data detected by the detector, and a central processing unit, wherein when a second temperature which is detected by the temperature detector after normal operation requested by a user has restarted and after a predetermined minimum defrosting prohibitive time has passed, drops by a predetermined difference in temperature from a first temperature which is detected by the temperature detector after the normal operation has restarted and after a predetermined defrosting prohibitive time has passed, and the second temperature is a predetermined temperature or below; the central processing unit carries out the defrosting operation. As a result, when the amount of frost has rapidly increased during the defrosting prohibitive time, the defrosting operation is carried out even if the defrosting prohibitive time has not passed, thereby deteriorating the capability of the exchanger and preventing the frost from remaining after the defrosting operation has been completed.
Wen-Ching Yang, Suh Y Lee, Bozorg Ettehadieh assigned to Westinghouse Electric Corp An improved waste heat boiler having a front, back and two side walls that cooperate to form a flue with a rotary combustor for burning municipal solid waste extending through the front wall and an asymmetrical bull nose protuherance disposed on the back wall above the rotary combustor and a plurality of nozzles disposed in the side walls or the front wall aligned with the tip of the protuberance to direct jets of air inwardly ,and downwardly into the flue to reduce the CO'content of the exhaust gases from the waste heat boiler.
4890667 METHOD AND APPARATUS FOR IMPROVING ~ T TRAN~SFFAI IN A FLUIDIZED BED Delbert L Lessor, Robert J Rohertus as~gned to Battelle Memorial Institute
4887664 HEAT EXCI-I_ANGER SYSTEM HAVING ~ S T , t~ ~ T TRANSFER CAPACITY Joseph A Nehrbauer assigned to Westinghouse Electric Corp
An apparatus contains a fluidized bed that includes particles of different ~ ~ I types, each particle type acquiring an oppos~ ~ t y upon contact. The contact may occur between particles of the two types or between particles of etiher type and structure or fluid present in the apparatus. A fluidizing gas flow is through the particles to produce the fluidized
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denses over the surfaces of the inner tubes to transfer heat to the heated fluid flowing through the inner tubes. Each evaporating space is partitioned into many sections by baffle plates to enhance the heat flux in the evaporating space. The evaporating spaces are connected to manifold plenums and the manifold plenums are connected to damage detecting systems and heat transfer medium maintenance systems.
4887436 DEFROSTING SYSTEM FOR A HEAT EXCHANGER Toshihiko Enomoto, Yasuo Nakashima, Takashi Watanabe, Takao Komai, Tatsuya Mochizuki, Shizuoka, Japan assigned to Mitsubishi Denki Kabushiki Kaisha
A heat exchanger for a turbine generator power plant includes a plurality of heat transfer tubes for transferring heat from a primary fluid cooling system to a secondary water cooling system subject to variations in inlet temperature and the presence of emulsified particles. Upon a reduction in flow rate in the secondary system, as when accommodating a reduced inlet temperature, a reusable plug assembly comprising compression-actuated cap and plug members is installed on the ends of a selected portion of the heat transfer tubes to increase flow through the remaining heat transfer tubes and thereby reduce the tendency toward sedimentation of the impurities in the tubes. An alternative construction of the plug assembly allows the assembly to be installed with access to only one end of the heat transfer tubes.
4889O58 HEAT RECOVERY B O I L E R
A defrosting system for a heat exchanger includes a temperature detector arranged adjacent to the exchanger, a temperature memory for storing temperature data detected by the detector, and a central processing unit, wherein when a second temperature which is detected by the temperature detector after normal operation requested by a user has restarted and after a predetermined minimum defrosting prohibitive time has passed, drops by a predetermined difference in temperature from a first temperature which is detected by the temperature detector after the normal operation has restarted and after a predetermined defrosting prohibitive time has passed, and the second temperature is a predetermined temperature or below; the central processing unit carries out the defrosting operation. As a result, when the amount of frost has rapidly increased during the defrosting prohibitive time, the defrosting operation is carried out even if the defrosting prohibitive time has not passed, thereby deteriorating the capability of the exchanger and preventing the frost from remaining after the defrosting operation has been completed.
Wen-Ching Yang, Suh Y Lee, Bozorg Ettehadieh assigned to Westinghouse Electric Corp An improved waste heat boiler having a front, back and two side walls that cooperate to form a flue with a rotary combustor for burning municipal solid waste extending through the front wall and an asymmetrical bull nose protuherance disposed on the back wall above the rotary combustor and a plurality of nozzles disposed in the side walls or the front wall aligned with the tip of the protuberance to direct jets of air inwardly ,and downwardly into the flue to reduce the CO'content of the exhaust gases from the waste heat boiler.
4890667 METHOD AND APPARATUS FOR IMPROVING ~ T TRAN~SFFAI IN A FLUIDIZED BED Delbert L Lessor, Robert J Rohertus as~gned to Battelle Memorial Institute
4887664 HEAT EXCI-I_ANGER SYSTEM HAVING ~ S T , t~ ~ T TRANSFER CAPACITY Joseph A Nehrbauer assigned to Westinghouse Electric Corp
An apparatus contains a fluidized bed that includes particles of different ~ ~ I types, each particle type acquiring an oppos~ ~ t y upon contact. The contact may occur between particles of the two types or between particles of etiher type and structure or fluid present in the apparatus. A fluidizing gas flow is through the particles to produce the fluidized