Natural ventilation salt-bath scaled model experimental device

Abstract

The invention relates to a natural ventilation salt-bath scaled model experimental device, which is characterized in that: the natural ventilation salt-bath scaled model experimental device is provided with a salt water storage tank, a clear water tank and a high order salt water tank; the high order salt water tank is connected with the salt water storage tank; a model building is arranged in a model building sink arranged in the clear water tank; a dispenser arranged above the model building is communicated with a salt water inlet corresponding to the model building through a brake valve on the dispenser, and is communicated with the high order salt water tank through a brake valve of a pipe, a flowmeter and a regulating valve; and a built-in submerged pump in a header tank is communicated with the clear water tank. The experimental device can simulate upward movement of hot air under buoyancy driving by using downward movement of salt water under gravity driving in a scale-model test, simulate a temperature field in an actual building by using the density difference generated by the salt water and clear water, and utilize the clear water to compare cold air of the ambient environment and the salt water to compare an internal heat source of a room. If the scaling of corresponding variables in the model building and the actual building is known, the temperature field and the ventilation quantity in the actual building can be predicted through model experiments, so that a simulated result is similar to an actual condition, and the cost is low.

Description

technical field [0001] The invention relates to the ventilation field, and relates to a natural ventilation salt water model experiment device. Background technique [0002] In the 21st century, people are increasingly pursuing a high-quality living environment. The use of air conditioners creates a comfortable indoor environment, but also causes huge energy consumption. According to authoritative data, the proportion of the total energy consumption of buildings in the total energy consumption of the country has risen from 10% in the late 1970s to about 28% in recent years, and it is expected to rise to 35% soon. %. If the indirect consumption of energy is added, the current proportion has exceeded 46%, and the energy consumption of air conditioners accounts for about 50% to 60% of building energy consumption. The energy crisis has become a key factor restricting the development of human society. In addition, air-conditioning has also formed a certain threat to people's h...

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Problems solved by technology

Natural ventilation has been widely concerned, but because it is greatly affected by the surrounding environment of the building, it is difficult to capture the law of natural ventilation in field tests. The existing technology generally uses computer numerical simulation and air experiment methods to study the characteristics of natural ventilation. It is difficult to display the temperature field in the room, there are too many errors between the simulation results and the actual situation, and the experimental research costs are high.

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