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Solar dryer

A solar collector and dryer technology, which is applied to solar collectors, solar thermal energy, solar thermal power generation, etc., can solve the problems of low thermal conductivity of hot air, reduced thermal efficiency, and insufficient utilization of heat.

Inactive Publication Date: 2013-01-30
JIANGSU QIZHENG NEW ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the relatively low thermal conductivity of the hot air itself, a large amount of heat is not fully utilized, which reduces the overall thermal efficiency.

Method used

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Embodiment Construction

[0020] The embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0021] In the case of sufficient sunlight, the low-boiling-point heat-conducting medium in the serpentine elbow 7 absorbs heat and vaporizes, and flows into the heat-dissipating pipe 15 at high speed along the pipe through the outlet nozzle 1 and the medium ascending pipe 9, and releases heat to liquefy. After liquefaction The medium flows back to the serpentine elbow 7 through the medium return pipe 10 and the liquid inlet nozzle 2. The blower fan 13 starts, and air is sucked into the front chamber 17 of the heat collector from the air inlet pipe 5, passes through the porous heat absorbing plate 8 to absorb heat, becomes hot air and enters the drying chamber through the air outlet pipe 4 and the air inlet pipe 11. The dried objects are stacked on the perforated plate 16 , and the heat release pipe 15 is covered to absorb heat from the heat release p...

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Abstract

The invention discloses a solar dryer. The solar dryer comprises a solar heat collector, a medium pipeline, a ventilating pipeline and a drying bin; a heat absorbing body of the heat collector is formed by a multi-pore heat absorbing plate which is provided with an S-shaped bend on the back surface; the S-shaped bend is filled by a heat-conducting medium with boiling point of about 30 DEG C; a heat releasing pipeline, which is divided into a plurality of layers, is arranged at the upper layer of the drying bin; and the heat releasing pipeline is integrally connected with the heat absorbing body through a pipeline. According to the solar dryer, the heat-conducting medium circularly flows between the heat absorbing body and the heat releasing pipeline, and the heat is quickly transmitted to a drying object, so that the heat loss is reduced, and the drying speed is raised; and the air absorbs heat during passing through the multi-pore heat absorbing plates, so that hot air can be generated, and the hot air is conveyed into the drying bin to remove the moisture.

Description

technical field [0001] The invention relates to solar heat utilization technology and crop drying technology, in particular to a solar dryer. The heat absorbing body of the solar collector of the dryer is composed of a serpentine tube and a porous plate, which can heat the heat-conducting medium and air. Internally designed with heating pipes. Background technique [0002] In the field of crop drying, most common drying heat sources are coal or oil heating, and the temperature of the hot air is around 200°C, which may easily lead to a decline in product quality. The conventional use temperature of solar collectors is about 50°C, which is just in line with the optimum temperature range for crop drying, and the solar energy has a wide range of sources and is cheap, which is suitable for drying crops. [0003] There are many patents about solar dryers at present, but due to reasons such as low utilization rate of solar energy and high cost, they still need to be popularized. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B9/06F26B23/10F24J2/05F24J2/24F24J2/46F24S10/40F24S10/70
CPCY02E10/44
Inventor 王金平徐少凡樊小平
Owner JIANGSU QIZHENG NEW ENERGY
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