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35results about How to "Waste heat" patented technology

High-efficiency fuel cell power system with power generating expander

A hydrogen fuel cell power system having improved efficiency comprises a fuel cell, a source of hydrogen gas, a compressor for creating a pressurized air stream, and a liquid supply which is heated by waste heat form the power system and evaporates into the pressurized air stream to produce a pressurized air and steam mixture. The pressurized air / steam mixture, which is preferably used as the oxidant in the fuel cell, is combusted with fuel in a burner to produce a high-temperature steam-laden exhaust stream. The high-temperature steam-laden exhaust stream drives an expander to produce a power output, and a power take-off from the expander uses the expander power to, for instance, drive an electrical generator, or drive other system components. The evaporation of liquid can take place external to the fuel cell, or can take place directly within the fuel cell, preferably using a cooling liquid that is directly injected into the fuel cell. The fuel cell power system advantageously uses the low-temperature waste heat of the fuel cell to evaporate liquid into the pressurized air, resulting in a steam / air mixture having a relatively large expansion potential.The systems and related methods of the invention are applicable to a wide range of fuel cell power systems, including a “pure” or “non-hybrid” fuel cell power system, powered by hydrogen from either an external source, such as a hydrogen storage tank, or from “direct” reforming of a fuel at the anode. The invention is also applicable to integrated or “hybridized” fuel cell power systems which contain a local fuel reformer. In these systems, the fuel cell is powered by hydrogen-containing reformate generated by the reformer.
Owner:NUVERA FUEL CELLS

Cogeneration apparatus

A cogeneration apparatus having a ventilation-introducing channel communicating an electrical-equipment compartment with a ventilation fan is disclosed. Driving the ventilation fan causes air to be led from an exterior of a cogeneration case through the electrical-equipment compartment to the interior of the ventilation-introducing channel. The air led to the interior of the ventilation-introducing channel is led to an electrical generator. The air led to the electrical generator is exhausted through a power-generation compartment to the exterior of the cogeneration case.
Owner:HONDA MOTOR CO LTD

Fan unit

A fan unit (1), in particular for an air conditioning system of a motor vehicle, comprising an electric motor (2) for driving a fan wheel (3), an electronic device (7) which generates waste heat and provides electrical current to the electric motor (2) and a fan housing (6), wherein the fan wheel (3) is disposed together with said electric motor (2) in an air guiding region (5) delimited by the fan housing (6). Provision is thereby made for the electronic device (7) to be fastened to the side of the fan housing (6) which faces away from the air guiding region (5) in a heat transferring manner so that a heat transfer connection is formed between said electronic device (7) and said air guiding region (5).
Owner:ROBERT BOSCH GMBH

High-power LED package

A high-power LED package includes a thermal conductive substrate, a circuit layer formed on the top wall of the thermal conductive substrate, a LED chip mounted on the top wall of the thermal conductive substrate, lead wires electrically connected between the LED chip and the circuit layer, and a packaging layer covering the LED chip, the lead wires and the connection areas between the lead wires and the circuit layer outside the bottom wall of the thermal conductive substrate for enabling waste heat to be directly transferred from the LED chip to the thermal conductive substrate and then rapidly dissipated into the outside open air by the thermal conductive substrate during operation of the LED chip.
Owner:H&T ELECTRONICS

Pre-coated sand regeneration system energy recovery method

The invention discloses a pre-coated sand regeneration system energy recovery method, which comprises the following steps of: afterheat energy recovery of off gas after fuel is combusted in a roasting furnace, wherein hot off gas generated after fuel is combusted in a combustion chamber of the roasting furnace is subjected to heat exchange at the tail of the roasting furnace through a mounted heat exchange device to generate hot air, then the hot air is delivered to the combustion chamber of the roasting furnace and an air distribution port at the bottom of the roasting furnace respectively so as to supply the hot air to a soaking zone of the roasting furnace; hot gas energy recovery in a boiling cooling bed, wherein a heat exchange device is mounted in an appropriate position of the boiling cooling bed, high-temperature hot gas in the boiling cooling bed is delivered into a cold sand hopper in a mixed sand hopper, and cold sand is pre-heated; energy recovery of regenerated heat pre-coated sand cooled by the boiling cooling bed, wherein the regenerated heat pre-coated sand cooled by the boiling cooling bed is delivered to a sand rolling bucket through a hot sand hopper, and is fully rolled, stirred, and mixed with pre-heated cold sand from the cold sand hopper to achieve heat exchange. The pre-coated sand regeneration system energy recovery method can achieve the comprehensive energy recovery rate of above 70%, and realize a remarkable progress in improving the thermal efficiency and reducing the production cost.
Owner:QINGDAO TIANHENG MACHINERY

Defrosting control device, air conditioner and defrosting control method therefor

Provided are a defrosting control device, an air conditioner and a defrosting control method therefor. The device includes an airbag device, wherein the airbag device includes a mounting support (1), an airbag (2) and an inflation mechanism. When an air conditioner to be controlled enters a defrosting mode, the inflation mechanism inflates the airbag (2) such that same forms an airbag layer to isolate an outdoor heat exchanger of the air conditioner to be controlled from flowing air outside the outdoor heat exchanger. The defrosting control device can achieve the beneficial effects of a small defrosting heat loss, a good defrosting effect and a good user experience.
Owner:GREE ELECTRIC APPLIANCES WUHAN +1
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