Building ventilation frequency testing method

A technology of the number of air changes and the test method, which is applied in the direction of measuring the acceleration and deceleration rate of the fluid, using the liquid/vacuum degree to measure the liquid tightness, etc., which can solve the problems of expensive equipment and high price, and achieve the effect of easy installation and operation.

Inactive Publication Date: 2019-03-29
TIANJIN UNIV
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Problems solved by technology

[0004] In order to overcome the deficiencies of the prior art and solve the problem of expensive and high-priced special-purpose building air-change air-tightness testing equipment, the present invention aims to provide a feasible method for simply testing the air-change times of buildings

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Embodiment Construction

[0019] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0020] The simple and practical test method for the number of air changes in buildings of the present invention is applied to the air tightness test of buildings. 8. Rubber tube (indoor) 9. Rubber tube (outdoor) 10. Differential pressure gauge 11, etc. Wherein, the air duct 5 and the rubber tube (indoor) 9 pass through the pre-drilled airtight material 3, the air volume regulating valve 6 and the air volume testing device 7 are installed on the outdoor section of the air duct 5, and the end is connected with the fan 8, and the rubber tube ( Indoor) 9 and rubber tube (outdoor) 10 are connected on the two ports of differential pressure gauge 11.

[0021] The simple and practical building ventilation frequency test method of the present ...

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Abstract

The invention relates to the field of buildings, and aims to solve the problems that special building ventilation tightness detection equipment is expensive and high in price. The invention provides afeasible method for simply and conveniently testing the ventilation frequency of a building. The method for testing the ventilation frequency of the building comprises the following steps: step 1, opening an entry door, and opening an air pipe hole in the closed material; step 2, enabling an air pipe to enter a room through the air pipe hole, installing an air volume adjusting valve and an air volume testing device on the outdoor air pipe, and connecting the air pipe with a fan; step 3, feeding a rubber pipe into the room along the air pipe hole, and connecting the outdoor part of the rubbertube with one end of a differential pressure meter, and connecting the other end of the differential pressure meter with another rubber pipe; step 4, measuring the indoor and outdoor pressure difference value by adopting the differential pressure meter, controlling the air volume adjusting valve according to the tested pressure difference value, and testing the air volume of the fan under the given pressure difference by adopting the air volume testing device. According to the invention, the method is mainly applied to the building ventilation frequency testing occasion.

Description

technical field [0001] The invention relates to the construction field, more specifically, relates to a test method for indoor ventilation times of buildings. Background technique [0002] At present, building energy-saving requirements are becoming more and more stringent. Building energy consumption is related to many factors. Among them, the airtightness of buildings directly affects the amount of indoor and outdoor air infiltration, and air infiltration refers to the direct penetration of outdoor air into the room through gaps such as doors and windows. Raise the indoor temperature and lower it in winter, wasting a lot of energy. For this reason, buildings with different energy-saving standards have different requirements for air infiltration, which is expressed by the number of air changes. Testing whether the number of air changes can meet the standard requirements is an important indicator to measure whether a building meets energy-saving requirements, and to calcula...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/26
Inventor 周志华张宇峰张吉
Owner TIANJIN UNIV
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