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Solar dryer

A solar collector and dryer technology, applied in solar collectors, solar thermal energy, solar thermal power generation, etc., can solve the problems of low thermal conductivity of hot air, underutilized heat, and reduced thermal efficiency.

Inactive Publication Date: 2013-01-23
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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Experimental program
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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 bend 6 absorbs heat and vaporizes, flows in at high speed from the upper layer of the heat release pipe 8 along the pipe, and releases heat to liquefy, and the liquefied material flows back to the serpentine form from the lower layer of the heat release pipe 8 Elbow 6. The blower fan 12 starts, and the air is sucked into the front chamber 13 of the heat collector from the air inlet pipe 3, passes through the porous heat absorbing plate 5 to absorb heat, becomes hot air, and then enters the drying chamber through the air outlet pipe 2 and the air inlet pipe 10. The dried objects are stacked on the perforated plate 9, and the heat release pipe 8 is covered to absorb heat from the heat release pipe 8. The hot air passes through the perforated plate...

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Abstract

The invention discloses a solar dryer. The dryer comprises a solar collector, a medium pipeline, a ventilating pipeline and a drying cabin, wherein a heat absorber of the collector is formed by a porous heat absorbing plate with a snake bend welded on the back; the snake bend is filled with heat-conducting media with boiling points at about 30 DEG C; a heat release pipeline divided into a plurality of layers is designed on the upper layer of the drying cabin; and the heat release pipeline and the heat absorber are connected by a pipeline. The dryer has the beneficial effects that the heat-conducting media circularly flow between the heat absorbers and the heat release pipeline and transmit heat to the dried objects quickly, thus reducing the heat loss and increasing the drying speed; and the air passes through the porous heat absorbing plate, absorbs heat and becomes hot air, the hot air is sent into the drying cabin and takes away moisture, and the hot air can be recycled after being dried by the dryer.

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. There is a heating pipe inside, and a dryer is attached behind the air outlet of the drying chamber, so that the hot air can be recycled. 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 reason...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B21/00F24J2/32F24S10/95
CPCY02E10/44
Inventor 王金平徐少凡樊小平
Owner JIANGSU QIZHENG NEW ENERGY
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