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Solar air heating device for enhancing air ventilation of underground space

An air heating device and underground space technology, which is applied to solar thermal devices, heating devices, ventilation of mines/tunnels, etc., can solve the problems such as the specific structure and research and discussion of the solar thermal conversion structure that have not been proposed, and improve the penetration rate. , long service life, the effect of promoting air circulation

Pending Publication Date: 2017-10-20
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The application number is 2015105667196, and the patent name is an invention patent for a solar wind pump complementary tunnel natural ventilation system and method. It proposes a ventilation device for underground spaces such as tunnels by using solar energy, but the device does not propose a suitable solar ventilation system. The specific structure of the light-to-heat conversion structure has not been studied, and whether the device can be realized efficiently depends on factors such as the conversion efficiency and cost performance of the light-to-heat conversion structure

Method used

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  • Solar air heating device for enhancing air ventilation of underground space
  • Solar air heating device for enhancing air ventilation of underground space
  • Solar air heating device for enhancing air ventilation of underground space

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0040] It is used in the ventilation structure of a tunnel at the bottom of a mountain. A certain tunnel at the bottom of the mountain is 7 kilometers long. The entrance of the ventilation shaft of the tunnel is set in the middle of the tunnel, and the exit is halfway up on the sunny side of the mountain. The light-to-heat conversion structure 1 is arranged along the upward mountain at the ventilation outlet, and the turbine wind generator 16 is installed on the air communication pipe 6 between the air outlet of the ventilation shaft and the light-to-heat conversion structure 1 . The photothermal conversion structure 1 is composed of 20 (rows)*15 (columns) solar photothermal conversion units 4 with a total of 300 module units, and the total area of ​​sunlight heating air is 20*2*15*1=600 square meters, where The size of each of the 15 air channels is uniformly 40*1*0.16 cubic meters. And the entrance of the light-to-heat conversion structure 1 communicates with the air channe...

Embodiment 2

[0044] It is used for the ventilation structure of the 2nd floor space in a shopping mall. The basement 1st floor of a shopping mall is a supermarket and garage, and the 2nd basement floor is a garage. Ventilation vents for the underground space of the mall are set on the top floor of the mall building. An inclined photothermal conversion structure 1 is arranged outside the vent, and the photothermal conversion structure 1 is composed of 6*3 solar photothermal conversion units 4, and the vent communicates with the air channel 24 through the communication structure 2, and the photothermal conversion structure 1 The lower part is an inclined plane, and then the light-to-heat conversion structure 1 is laid on the concrete; the highest point of the light-to-heat conversion structure 1 communicates with the overflow outlet 3 through the communication structure 2 .

[0045] The present embodiment also includes devices such as a stand 18 for maintenance; and the air channel 24 and th...

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Abstract

The invention discloses a solar air heating device for enhancing air ventilation of an underground space. The solar air heating device comprises a photothermal conversion structure communicating with a ventilation opening of the underground space. The photothermal conversion structure is formed by arraying a plurality of solar photothermal conversion units which communicating with one another. The solar photothermal conversion units are rectangular and are arrayed in a rectangular array mode. Each solar photothermal conversion unit is composed of a light transmitting thermal insulation layer and a photothermal conversion diaphragm plate arranged below the light transmitting thermal insulation layer. The lower side of each photothermal conversion diaphragm plate is fixedly connected with the corresponding thermal insulation layer, and air channels are formed between the photothermal conversion diaphragm plates and the corresponding light transmitting thermal insulation layers. Antireflection films are attached to the light transmitting thermal insulation layers. The surface of each photothermal conversion diaphragm plate is provided with a black metal plate. Inlets of the air channels communicate with a ventilating outlet of the underground space, and outlets of the air channels communicate with a chimney. The solar air heating device is high in photothermal conversion efficiency. Moreover, by the adoption of modular design, the structure is simple, and using, installation and maintenance are made convenient. Meanwhile, the solar air heating device is long in service life and high in cost performance.

Description

technical field [0001] The invention belongs to the technical field of solar energy utilization; it also relates to the technical field of air circulation in underground spaces; in particular, it relates to a solar air heating device for enhancing air flow in underground spaces. Background technique [0002] In recent years, the energy problem has become increasingly prominent, and a variety of energy-saving means have emerged in the ventilation field of tunnels and other underground spaces. In 1991, Japan adopted a combined ventilation scheme of two shafts with a diameter of 9.7m and multiple electrostatic precipitators in the 10km-long Kan-Etsu Tunnel. The Lerdo Tunnel in Norway, which opened to traffic at the end of 2000, adopted the longitudinal ventilation method of "single inclined shaft + soot and nitrogen oxide purifier + jet fan". The air purifier can remove soot particles and NO in the air. 2 harmful gas. For long highway tunnels, longitudinal segmented ventilati...

Claims

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Application Information

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IPC IPC(8): F24J2/00F24J2/46E21F1/00
CPCE21F1/003
Inventor 宁铎杨杰黄建兵刘嫣
Owner SHAANXI UNIV OF SCI & TECH