Device and method used for drying materials

A drying and control device technology, applied in the direction of drying solid materials, heating devices, tobacco drying, etc.

Inactive Publication Date: 2013-08-21
EMERSON ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Heat pump process controls are usually only modifications of existing coal-fired process controllers

Method used

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  • Device and method used for drying materials
  • Device and method used for drying materials
  • Device and method used for drying materials

Examples

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Embodiment Construction

[0019] Exemplary embodiments will be described more fully with reference to the accompanying drawings.

[0020] In the present invention, various exemplary embodiments or examples relate to systems for drying materials including, but not limited to, tobacco and the like. The drying system comprises control means configured to be selected from a plurality of different kinds of heat sources, one or more of which are renewable, for example to help increase (or preferably optimize) the supply of heat to, for example, the drying chamber , and / or improve (or preferably maximize) energy savings. The choice of heat source is determined for example based on the temperature in the drying chamber and the temperature of the fluid in the heat storage. The fluid in the heat storage can be heated by one or more auxiliary heat sources, for example by solar installations, and / or by means of electrical current from wind and / or hydropower, and / or by energy obtained from a utility power station....

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Abstract

The invention discloses a device and a method used for drying materials, and provides a relevant controlling device. In an embodiment, the controlling device used for a material drying system is arranged to select one or more heat sources from a plurality of different kinds of heat sources to dry materials. The selection is executed based on inputs of one or more sensors. The selected heat sources are controlled by the controlling device to provide heat for drying the materials. In some arrangements, the material drying system is used as a typical heat pump to operate only when more cost-efficient auxiliary heating schemes cannot be provided to keep a drying temperature.

Description

technical field [0001] The invention relates to an apparatus and method for drying materials. Background technique [0002] This section provides background information that is not necessarily prior art to which this disclosure relates. [0003] In the tobacco industry, a key process of tobacco production is the drying of tobacco leaves. Among the many types of drying rooms are two main types. One type uses coal as a heating source and the other uses a heat pump as a heating source. Coal-fired tobacco drying can generate a lot of pollution, which is why heat pumps are considered as an alternative heat source for tobacco leaf processing. [0004] Although heat pumps for drying rooms are basically zero-pollution, there is a price to consider for heat. Usually, for the filling of 3500 kg of fresh tobacco leaves, about 750 kWh of energy is required to dry the tobacco leaves. [0005] Another problem with drying with heat pumps is the typical control system used for heat pum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B25/22A24B3/04
CPCA24B3/18F26B9/06F26B23/00F26B2200/22
Inventor 单平过炜华
Owner EMERSON ELECTRIC CO
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