Experimental device for simulating smoke prevention system of heating and ventilation equipment of high-rise building

Abstract

The invention relates to an experimental device for simulating a smoke prevention system of heating and ventilation equipment of a high-rise building. The experimental device comprises a head brine tank, a head clear water tank, a water storage tank and a high-rise building model, wherein the bottom of the head clear water tank is connected with a clear water discharge pipe, the bottom of the head brine tank is connected with a brine discharge pipe, the water storage tank consists of an inner water tank and an outer water, and the high-rise building model is positioned in the inner water tank; and a storey area and a vertical shaft area are distributed on the left side and the right side of the high-rise building model, wherein each storey of the storey area is communicated with the clear water discharge pipe, each storey of the storey layer and the vertical shaft area are communicated through a gap of an simulated elevator door, the top of the high-rise building model is communicated with the brine discharge pipe through a brine buffer, the top of the vertical shaft area is provided with a top opening, the bottom of the vertical shaft area is provided with a bottom opening, and the bottom opening is communicated with the outer water tank. The experimental device disclosed by the invention has the capabilities of predicting a temperature field in a prototype building by a building model experiment, intuitively demonstrating the generation and development process of smoke and providing important experiment data for achieving a scheme for elevating a neutral plane to be above the total height of the building.

Description

technical field [0001] The invention relates to an experimental device, in particular to an experimental device for simulating the smoke prevention system of the HVAC equipment of a high-rise building. Background technique [0002] The smoke prevention and exhaust system of high-rise buildings is a very important content in the fire protection design of buildings. Compared with ordinary multi-storey buildings, high-rise buildings have the characteristics of high floors and long evacuation distances, and the design of smoke prevention and exhaust systems for high-rise buildings is more complicated. According to statistics, more than 70% of casualties in high-rise building fires are caused by suffocation by fire smoke, so smoke control in high-rise building fire conditions is very important. There are three main methods to study the flow law of smoke in building fires, namely full-scale fire experiments, small-scale model experiments and computer numerical simulations. The f...

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Problems solved by technology

The full-scale fire experiment is the most ideal and reliable research, but it requires a lot of financial resources, and the randomness and repeatability of the experiment are poor; computer numerical simulation is currently a popular method for studying the law of smoke flow. Basic, it can simulate many working conditions, the randomness and repeatability of fire are good, and it is the main means of fire research in the future; the salt water experiment is a small-scale model test, which uses the flow of a certain concentration of salt water in clear water to simulate fire The flow law of the flue gas, the process is intuitive, the repeatability is good, and the experimental cost is low, and it has gradually attracted people's attention

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