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Vortex ventilation system and method applied to high space building

A technology for tall spaces and ventilation systems, applied in ventilation systems, space heating and ventilation, space heating and ventilation details, etc., can solve problems such as unsatisfactory ventilation effects and large ventilation volumes, and reduce system ventilation volume and system The effect of running time, reducing air age, and improving ventilation efficiency

Pending Publication Date: 2018-12-18
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a vortex ventilation system and method suitable for tall and large space buildings, so as to solve the problems in the prior art that most of the ventilation methods face the entire high and large space, resulting in huge ventilation volume and unsatisfactory ventilation effect.

Method used

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  • Vortex ventilation system and method applied to high space building
  • Vortex ventilation system and method applied to high space building
  • Vortex ventilation system and method applied to high space building

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Embodiment 1

[0041] The vortex airflow in the present invention is a kind of rotating and converging, converging and rising airflow movement form. When it is the working area inside the tall and large space building, that is, the area to be ventilated is ventilated from the airflow that is arranged on the wall of the high and large space building. The air supply airflow entering the tuyere, after passing through the deflector function, makes the air flow sent out flow in the same clockwise direction, forming a circulation in the lower part of the tall and large space building, which provides angular momentum air supply, and at the same time cooperates with the top exhaust The exhaust air flow of the air outlet forms a columnar air vortex between the air outlet on the top of the work area and the lower space, and gathers, entrains and discharges the pollutants in the lower space to the outside.

[0042] Because the vortex air flow, especially the columnar air vortex, has obvious entrainment ...

Embodiment 2

[0067] The invention also discloses a vortex ventilation method suitable for tall and large space buildings. The method adopts the vortex ventilation system suitable for high and large space buildings described in the first embodiment to ventilate the working area.

[0068] This method is used to ventilate the working area inside the tall and large space building. Specifically, this method guides the wind entering the air inlet to the same airflow rotation direction through the deflector, so that the incoming wind flows in a vortex manner. Diffusion flows to the work area and exits through the exhaust vents.

[0069] The vortex flow in the present invention is a rotating, converging and rising airflow movement form. When it is a working area inside a tall and large space building, that is, the air supply airflow entering from the air inlet when the ventilation area is to be ventilated passes through the deflector After the diversion effect, the air sent out will flow in the sa...

Embodiment 3

[0074]In order to verify the vortex ventilation method provided by the present invention and the system's indoor ventilation effect on tall and large space buildings and the control effect on indoor pollutants in high and large space buildings, a numerical model was established according to actual usage conditions, and the length, width and height of the model were respectively 20m × 10m×6m, the size of the angular momentum air supply device is 2m×1m, and the size of the exhaust device is 2m×2m. During the verification, the air exhaust velocity on the roof is 2m / s. The ventilation effect of the present invention is judged by studying the movement law of pollutants released from pollution sources in the middle of the model ground.

[0075] The gas flow involved in this verification is a low-speed flow with a Mach number less than 0.3, so the air is regarded as an ideal incompressible gas. The turbulent flow model is calculated using the Reynolds Stress Model (RSM), and the con...

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Abstract

The invention discloses a vortex ventilation method and system applied to a high space building. According to the vortex ventilation method, air entering an air inlet in a wall of the high space building passes through a guide plate at an outlet of the air inlet and is guided to flow to the same clockwise direction, then diffuses and flows to a working area in the form of vortex air flow, and thenis discharged through an air outlet in the top of the working area; since a columnar air vortex has obvious entrainment force, high-density pollutants accumulated on the lower portion of a room can be sucked into a roof exhaust device in an entrainment mode and discharged out of the room by using smaller ventilation volume, so that the air volume is effectively reduced, and the ventilation efficiency is improved; and through the convergence effect of vortex ventilation in a lower ventilation control area, the pollutants are limited to diffuse to an area outside the ventilation control area, and thus the overall indoor environment is effectively improved.

Description

technical field [0001] The invention relates to the field of heating, ventilating and air conditioning, in particular to a vortex ventilation system and method suitable for tall and large space buildings. Background technique [0002] In architectural design, the ventilation method of tall and large space buildings has always been the focus and difficulty of design attention. Tall space buildings generally refer to spaces with a height greater than 5m and a volume greater than 10,000m 3 In terms of public and civil buildings, it mainly refers to theaters, concert halls, great halls, gymnasiums, exhibition halls and other buildings. In addition, such large workshops and factories also exist in industrial buildings. Due to the high ceiling and large volume of the tall space, the heat generated in the room rises upwards and accumulates a large amount of heat under the ceiling, resulting in a large vertical temperature gradient in the entire space, and temperature stratificati...

Claims

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Application Information

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IPC IPC(8): F24F7/007F24F13/15F24F13/10
CPCF24F7/007F24F13/10F24F13/1413F24F13/15
Inventor 王怡曹智翔翟超王萌黄艳秋孟晓静
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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