Process and device for utilizing waste heat
OwnerRalf Richard Hildebrandtinventor
Life of this patent
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Abstract
A process, device and system are provided for utilizing waste heat from a waste heat source, especially from an internal combustion engine, by a coolant being heated and by this heat being used to drive a turbine. The device utilizes waste heat with a waste heat source (10, 20) cooled by a coolant, with a turbine (11) and with an evaporating device (16) for the coolant. To increase the efficiency of such a process and such a device and system, and to reduce the design effort and the maintenance effort, the coolant is evaporated after it leaves the waste heat source (10, 20) and the evaporating means is provided after the waste heat source (10, 20) when viewed in the direction of flow of the coolant.
Claims13
A process for utilizing waste heat from a waste heat source such as from an internal combustion engine, the process comprising:
- heating a coolant by the waste heat source at a preset pressure to a first temperature below the boiling point of the coolant at the preset pressure;
- after the coolant leaves the waste heat source in liquid form, evaporating the coolant by heating the coolant to a second temperature above the boiling point and/or expanding the coolant to below the vapor pressure;
- sending the evaporated coolant directly to a turbine after evaporation.
A device for utilizing waste heat with a waste heat source, the device comprising:
- a coolant, the waste heat source being cooled by a coolant and in which the coolant is heated by said waste heat source at a preset pressure to a first temperature below the boiling point of the coolant at a pressure;
- an evaporating means, in which the coolant is evaporated by heating the coolant to a second temperature above the boiling point and/or by expanding the coolant to below the vapor pressure;
- and
- a turbine, said evaporating means being provided directly in front of said turbine when viewed in the direction of flow of the coolant to feed evaporated coolant directly from said evaporating means to said turbine.
A waste heat system, comprising:
- an internal combustion engine providing a waste heat source;
- a coolant, the waste heat source being cooled by a coolant and in which the coolant is heated by said waste heat source at a preset pressure to a first temperature below the boiling point of the coolant at a pressure;
- an evaporating means, in which the coolant is evaporated by heating the coolant to a second temperature above the boiling point and/or by expanding the coolant to below the vapor pressure;
- a liquid conduit from said heat source to said evaporating means, the coolant being transported from the waste heat source to said evaporating means in a liquid state;
- and
- a turbine, said evaporating means being provided directly upstream of said turbine with respect to a direction of flow of the coolant to feed evaporated coolant directly from said evaporating means to said turbine.
Dependencies are inferred from the claim text.