Indoor ventilation testing device for building model and application method thereof

Abstract

The invention discloses an indoor ventilation testing device for a building model, which comprises a cabinet body and a pipe distribution box, and is characterized in that the cabinet body is internally provided with a base, the temperature regulating bottom plate is equipped with a building indoor model, the internal part of the base is equipped with a continuous S-shaped bending temperature regulating pipe, the top of the cabinet body is equipped with a camera, the pipe distribution box is connected with an air outlet of a fan through a pipeline, the pipe distribution box is connected with agas tank through a pipelines, the side surface of the pipe distribution box is equipped with a plurality of gas pipe joints, each gas pipe joint is connected with an expanded joint through a hose, and each expanded joint includes a shell with the cross section being rectangular. The indoor ventilation testing device is abutted with a window of the building indoor model by using the expanded joints, the air flow is dispersed when passing through circular holes on a partition plate, the air flow passing through the partition plate is blown to blades, and the air is uniformly stirred by the blades, so that the air flow coming out of circular pipes is uniform in velocity, and natural external air intake can be simulated more closely.

Description

technical field [0001] The invention belongs to the technical field of building indoor ventilation testing, and in particular relates to a building model indoor ventilation testing device and a using method thereof. Background technique [0002] At present, the evaluation of indoor natural ventilation in buildings mainly adopts numerical simulation methods, that is, fluid calculation software is used to select typical floors and apartment types at different heights of buildings for computer numerical simulation analysis of indoor flow fields. Due to the complexity of the fluid, the calculation simulation often needs to use assumptions, and the calculation model is not yet fully supported by the theory. Therefore, there are still many unknown factors in the evaluation of the natural ventilation of buildings by computer simulation, and it is not intuitive enough. [0003] For example, the Chinese patent with the application number CN200920295869.8 discloses a natural ventilati...

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Problems solved by technology

[0005] 1. Using a trumpet-shaped cross-section amplifier to supply air to the indoor model of the building will inevitably result in a higher wind speed in the middle and a lower wind speed around it, which cannot simulate the ventilation conditions in the natural state

[0006] 2. There are two conditions for the formation of indoor natural ventilation. One is that the external wind pressure enters the room from the window, causing air convection in the room; The solution cannot simulate the indoor airflow caused by the temperature difference, which is insufficient

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