Field simple determination method for necessary quantity of residential building natural ventilation

Abstract

The invention relates to a field determination method for necessary quantity of residential building natural ventilation. The determination process is as follows: a certain window area at the lower part of the residential building is opened, which leads outdoor air to naturally enter the rooms; and the outdoor air entering the rooms rises owning to indoor heat source dissipation and temperature-rising of air due to heat-adsorption; one window is set and a certain area of the window is opened as an air outlet, an air-quantity-measuring simple cover is arranged at the air outlet position, then, the air quantity passing through an air measuring duct is measured by utilizing an air quantity tester, and the measured value is the necessary quantity of residential building natural ventilation. The method is simple, the field measuring precision is improved, the inaccuracy owning to instability, low quantity and random is improved for the measuring result of the natural ventilation. The air-quantity-measuring simple cover is convenient for manufacturing and installing, the measuring cost is low, and the method is suitable for field test of the necessary quantity of residential building natural ventilation.

Description

technical field [0001] The invention relates to a technology for measuring the necessary amount of natural ventilation of residential buildings by using a simple cover for measuring air volume, which is used for measuring the necessary amount of natural ventilation of residential buildings, facilitates the evaluation of natural ventilation of residential buildings, and changes the current lack of natural ventilation of residential buildings Current status of field testing methods. Background technique [0002] Natural ventilation is a recognized ecological technology that can remove excess heat in buildings, reduce energy consumption for air conditioning, and improve indoor air quality. The natural ventilation of buildings, especially the natural ventilation of residential buildings, the natural ventilation potential of the building itself has always been the focus of attention of people and the industry, and it is also one of the important factors to evaluate building energ...

AI Technical Summary

Problems solved by technology

Due to the accidental, random, and fluctuating characteristics of natural ventilation, the actual natural ventilation of residential buildings is currently difficult to measure directly and quantitatively on site.

[0003] At present, the conventional on-site natural ventilation measurement methods include: 1) Calculating the natural ventilation through temperature measurement and the measurement of the upper and lower openings of the building, using the thermal compression method. The position is difficult to reflect the thermal environment state of the whole room

2) Measure the velocity directly at the opening and calculate the geometric dimensions of the upper and lower openings of the building to obtain the natural ventilation. The defect of this method is that it is difficult to obtain the actual natural ventilation of the building due to factors such as small and unstable wind speed and instrument accuracy. quantity

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