Abstract: A heat wrap control for a preheater in a paperboard corrugator adjusts the amount of wrap of a moving web about a heated drum as a linear function of web speed to effect uniform heat transfer to the web.

Abstract: As shown in an embodiment of the invention as depicted, the heat exchanger comprises a cylindrical chamber into which, and from which heated fluid, such as the combustion gas product from a furnace, is conducted. The chamber confines therewithin a plurality of axially-extending tubes, and ducting admits ambient air to and from the tubes. Accordingly, the heated fluid and the ambient air are indirectly heat-exchanged. The chamber is fixed within an enclosure or housing, except that an axially-extending portion of the chamber is left exposed, in order that the heated-fluid input and discharge can be effected directly to and from the chamber. The housing forms a compartment alongside of the chamber, and to a given side thereof, which compartment causes the ambient air to cycle or pump through the tubes and compartment, prior to any substantial air-discharge, to generate an improved draft or current flow in the heat exchanger.

Abstract: This disclosure is directed to maintaining a blanket of secondary vapor intermediate a hot primary vapor and the atmosphere, in a condensation heating facility, to prevent losses of the primary vapor to the atmosphere. A secondary liquid is transported through the secondary vapor into the hot primary vapors where the secondary liquid is vaporized to supplement the secondary vapor.

Abstract: The present invention provides a heat exchanging apparatus with a silencing means comprising:A generally upright cylindrical body, connected to the outlet of a radiant tube and made of multiple cylinders;An outermost narrow cylindrical passage of air to be heated, being defined by a pair of parallel cylinder walls leading the air upwards therethrough;A downward air passage, communicating with the upward cylindrical passage of air, disposed concentrically therewith on the inner side thereof;A passage for high temperature exhaust gas formed inside the upward passage of air concentrically therewith in order to completely enclose combustion noise; andAt least one resonator for absorbing the noise disposed inside the upward air passage.

Abstract: Enclosed temperatures are modulated by water heated by solar energy and cooled to ambient air. Control means include moving exterior insulation, enclosing or exposing the water, using forced air, and providing special means for heat storage and transfer. Water ponds horizontally disposed atop the enclosure, or in floor plenums and frequently in direct thermal exchange with underlying space, or water circulating in walls by thermosiphon action may be used separately or in combinations with the control means.

Abstract: A heat exchanger or boiler has a bypass between the inlet and the outlet. The outlet includes a chamber having a partition with a thermostatically controlled valve, which controls flow of heating medium from the heat exchanger to the outlet connection. The thermostat maintains the temperature at the chamber. The bypass is from an inlet chamber to the space beyond the thermostat. The thermostatic valve, itself, is of a typical known construction consisting of a valve member actuated relative to a port in a plate by means of a thermostatic element axially positioned relative to the valve member. The plate forms part of a partition formed in a header member which forms a chamber at the outlet of the heat exchanger from which the heating medium flows through the thermostatic valve, to the outlet conduit. The bypass is controlled by a plate partially obstructing a passageway and it may be flexible to respond to flow of medium to have a throttling effect.

Abstract: A heat transfer assembly is provided having heat transfer elements which contact end portions of a pressure roller of a fuser assembly. A heat transfer fluid is caused to pass over the elements in response to a signal to remove heat therefrom thereby cooling such portions of the pressure roller in contact with the elements.

Abstract: Disclosed is apparatus and a system thereof for reclaiming heat through the transfer of heat from normally waste hot gases to a liquid medium, usually water, and redistributing the heat by way of the liquid medium to spatially distant heat exchangers. The heat exchangers employed for initial heat reclamation are of a design uniquely adapted to avoid plugging under freezing conditions.

Abstract: A flow stabilizer for maintaining parallel channel flow through a multiple tube vaporizer wherein different mass flow rates may occur in the flow of the liquid to be vaporized through the different tubes. The stabilizer includes a plurality of inlet tubes in thermally isolated relationship to the vaporizer and having inner ends extending into the entrance end portions of the vaporizer heat exchanger tubes so as to discharge the incoming liquid to be vaporized inwardly of the entrance end of the exchanger tubes. A flow passage is provided for conducting vaporized liquids from the supply chamber into the heat exchanger tube entrance end portions to prevent choking of the system.