4526013 Environmental protection system

New Patents

4524759 PROCESS FOR THE REVERSIBLE TRANSFER OF THERMAL ENERGY AND HEAT TRANSFER SYSTEM USEFUL THEREIN

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non-volatile inorganic salt) facilitates prolonged, etticient operation of the sequential thermal charging and discharge operations.

4526009 METHOD OF OPERATING A BIMODAL HEAT PUMP, AS WELL AS BIMODAL HEAT PUMP FOR USING SAID METHOD

Robert F Butler

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A process for reversibly transferring heat between a plurality of zones maintained at different temperature levels, and a heat transfer system useful therein. The technique involves maintaining a solution of a volatile material, e.g., a solution of a non-volatile inorganic salt in ammonia, in a solution tank, feeding the solution into an evaporator to evaporate the ammonia (or other volatile material), and feeding the ammonia vapor thus formed into a separate receiver which is in heat exchange relationship with a low temperature thermal sink, while recycling the solution having a decreased ammonia content to the solution tank. Heat is thus transferred to a low temperature thermal sink, and the procedure is continued to store any desired quantity of thermal energy therein. When it is desired to withdraw heat from the system, the salt/ammonia solution, containing a decreased concentration of the ammonia, is fed into a condenser wherein ammonia vapor is absorbed and additional vapor is introduced by vaporization of ammonia in the receiver, thereby transferring heat from the low temperature thermal sink to the useful temperature level of the condenser. Thermal energy, which may be provided by solar insolation or other low grade heat sources, is thus transferred from the evaporator, stored in a low temperature thermal sink, and recovered from the condenser at useful temperatures. Use of a separate solution tank and receiver facilitates independent control of the instantaneous heat input and output in the evaporator and condenser, and the total thermal storage capacity in the receiver and thermal sink. Use of a working fluid incorporating a first, volatile material such as ammonia, and a second, relatively non-volatile material compatible therewith (such as sodium thiocyanate or other

Sluys Willem L N van der, Mathias L Hermans, Eindhoven, Netherlands assigned to U S Philips Corporation t"

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There is provided a method of operating a bimodal heat pump which in a first mode operates as an absorption heat pump and in a second mode operates as an evaporation-condensation device at a comparatively low ambient temperature. When switching from the first mode to the second mode, the evaporator and the absorber are uncoupled from the generator and the condenser. The generator and the condenser are operated in the second mode as an evaporationcondensation device, an extra quantity of working medium being present. The passage from the condenser to the evaporator is positioned at a level that provides the extra quantity of the working medium when starting the second mode.

4526013 ENVIRONMENTAL PROTECTION SYSTEM John R Joy assigned to Williams International Corporation The disclosure relates to an environmental protection system comprising a Rankine cycle power loop wherein a working fluid is heated by either the combustion of a fuel or by heat exchange from internal combustion engine exhaust. A high frequency turboalternator is

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New Patents

Republic Of Germany assigned to Hoechst CeramTec Ag C~'.., "'~ ....

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driven by the power loop working fluid for the production of high frequency alternating current. An electrically driven Rankine cycle cooling loop uses a second working fluid to effect cooling of a desired media.

4526112 HEAT EXCHANGER METHOD AND APPARATUS Donald F Warner assigned to Heat Exchanger Industries Inc art

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Exhaust gas treatment method and apparatus extract heat from an exhaust gas by operating in a water-condensing mode which allows more heat to be recovered, removes particulate matter and condensed acid from the exhaust gas, and washes heat exchange surfaces to keep them clean and wet to improve heat transfer. Systems for heating water, air, and both water and air are disclosed. Methods of constructing and assembling improved heat exchangers are disclosed.

Process and apparatus for manufacturing heat exchangers from ceramic sheets, wherein different flow channels are stamped from or pressed into the sheets, and the formed sheets are joined together with a laminating agent. The stacking of the individual sheets is effected using apparatus in which the sheets are transported to the forming means, applicator means and laminating means by horizontally and vertically displaceable, rotatable and pivotable suction plates. The organic component of the ceramic sheets is expelled from the heat exchanger block obtained in two heating steps with an intermediate forming operation to bring the heat exchanger block to its final dimensions, and the block then fired between 1,200 degrees to 1,700 degrees C. The actual sintering temperature depends on the particular ceramic used, which may comprise Si3N4, SiC, cordierite and/or semiconductive barium titanate compounds.

4526759 FLUIDIZED BED.REACTOR UTILIZLNG I N - i g D HEAT EXCHANGER TUI$1gS WHICH REGISTER WITH WATER WALL TUBES Robert Stewart assigned to Foster Wheeler Energy Corporation

4526635 PROCESS FOR MANUFACTURING HEAT EXCHANGERS F R O M C E R A M I C

SHEETS Juergen Heinrich, Heinrich Schelter, Stefan Schindler, Axel Krauth, Schocnwald, Federal

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