CN101788311A - Field simple determination method for necessary quantity of residential building natural ventilation - Google Patents
Field simple determination method for necessary quantity of residential building natural ventilation Download PDFInfo
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- CN101788311A CN101788311A CN200910200460A CN200910200460A CN101788311A CN 101788311 A CN101788311 A CN 101788311A CN 200910200460 A CN200910200460 A CN 200910200460A CN 200910200460 A CN200910200460 A CN 200910200460A CN 101788311 A CN101788311 A CN 101788311A
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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
The present invention relates to a kind of technology of utilizing the air measuring simple cover to measure necessary quantity of residential building natural ventilation, be used for measurement to necessary quantity of residential building natural ventilation, be convenient to the evaluation of residential building natural ventilation amount, change the present situation that present residential housing does not have natural ventilation rate on-the-spot test method.
Background technology
Natural ventilation is a kind of generally acknowledged unnecessary heat of architecture indoor of both can getting rid of, and can reduce air conditioning energy consumption again, also can improve the ecological technique of indoor air quality simultaneously.The natural ventilation rate of building natural ventilation rate, particularly residential housing, its natural ventilation potentiality of building that this body structure possesses are the focuses that people and industry are paid close attention to always, also are one of key factors of estimating building energy conservation.Because natural ventilation is accidental, at random, the feature of fluctuation, the actual natural ventilation rate of residential housing also is difficult to the on-the-spot measurement of direct quantitative more exactly at present.
At present conventional on-the-spot natural ventilation measuring method has: the 1) tolerance by temperature survey and architectural under shed physical dimension, utilize hot-press method to calculate natural ventilation rate, the defective of this method be the indoor and outdoor temperature measuring point count arrange limited, locating is difficult to reflect whole indoor thermal environment state.2) metric calculation of directly carrying out velocity survey and architectural under shed physical dimension at opening part obtains natural ventilation rate, and the defective of this method is because of wind speed is small and unstable, the factor of accuracy of instrument etc. also is difficult to acquisition and builds the practical natural ventilation.3) tracer gas technique is according to the trace gas concentration measure of the change result who discharges in a period of time, calculate a kind of air measuring method that obtains, for under the bigger situation of tested room volume, the tracer gas that consumes in the tracer gas technique, surveying instrument are comparatively expensive, and test condition is difficult to accomplish that tracer gas technique generally is used for laboratory study for this reason.
Therefore, in the present actual residential housing, need badly a kind ofly be simple and easy to implement, cost is suitable, test result satisfies the natural ventilation evaluating characteristics of building needs own building natural ventilation weight testing method.
Summary of the invention
The present invention proposes a kind of field simple determination method, utilize the air measuring simple cover, can measure its natural ventilation necessary amount residential housing with upper opening and lower openings at necessary quantity of residential building natural ventilation.Because estimating the size of building natural ventilation rate should be foundation with the inhabitation people and the required necessary resh air requirement that decontaminates in the satisfied building at first, the present invention proposes a kind of need to building the measuring technology that necessary ventilation is measured for this reason, it can open the opening of certain area as ventilating opening in chamber personnel's the custom of windowing according to this building, be defined on the limited air-out area by the servostabilization section and measure natural ventilation rate, analyze the size of the natural ventilation necessary amount that this building had with this.The power that orders about natural ventilation generally has two kinds of blast and hot pressing, because that blast is influenced by out door climatic parameter is bigger, cuts in and out, and it is considered herein that the necessary ventilation that building is had should be the basic ventilation of building, should measure under calm press strip spare.
The present invention is used for the on-site measurement method of necessary quantity of residential building natural ventilation, the mensuration process is as follows: open the certain aperture area of residential housing bottom air inlet, make in the outdoor air nature inlet chamber, outdoor air in the inlet chamber rises because of the heat absorption of indoor thermal source heat radiation air heats up, by open the air measuring simple cover of installing on the mouth in the top air-out, utilize conventional wind quantity test Instrument measuring by measuring the air mass flow in air channel, measured is necessary quantity of residential building natural ventilation.
Further, the residential housing of being surveyed has significantly and outdoor bottom air inlet that communicates and top air inlet, measuring the top air outlet adopted and lower air outlet at least can be by indoor a kind of passage UNICOM, should open all room inside doors of being appraised and decided in the building during mensuration, have the people or the thermal source heat radiations such as equipment or illumination that are equivalent to the design load amount in the residential housing.
Further, the bottom air intake that residential housing is opened is opened open area, form, should meet the common setting of residential housing, and the general inhabitation that meets people is accustomed to and the behavioural habits of windowing, the bottom air intake is opened open area and is no more than all air inlets of bottom and opens the 15%-30% of open area, and to be defined in the natural ventilation rate that records under this state be the natural ventilation necessary amount.
Select in the air outlet of residential housing top one to open mouthful, and open mouthful indoor in this top air-out an air measuring simple cover is installed as the top air-out.
Selected bottom air intake unlatching mouth and top air-out unlatching mouth can be avoided the influence of outside wind pressure, or can take certain measure to avoid the influence of outside wind pressure in the outside of bottom air intake unlatching mouth and top air-out unlatching mouth.
The air measuring simple cover that the natural ventilation rate measurement is adopted is formed by measurement air channel and opening seal pad, and the measured hole on the measurement air channel should meet the requirement of national relevant air measuring standard, and measurement air channel length should be 3-4 times of the long limit of duct cross-section.
Open the opening seal pad of the air measuring simple cover of installing on the mouth at the top air intake and must open mouth greater than the air-out of selected top, should cover the top air intake during installation fully and open mouthful, make the room air can only be by outside the measurement air channel delivery chamber on the air measuring simple cover.
Open a mouthful air measuring simple cover of installing at the top air intake, it measures air channel and seamless tight connection of opening seal pad, and the air measuring simple cover should be selected on-deformable material.
A kind of field simple determination method for necessary quantity of residential building natural ventilation that the present invention proposes, avoided utilizing and measured temperature or speed or trace gas concentration by calculating the defective that the natural ventilation rate that obtains is difficult to reflect more exactly building natural ventilation rate size, proposed a kind ofly to open that limited bottom air intake is opened mouthful and the notion of the natural ventilation necessary amount of top air-out when opening mouth, utilize the measurement air channel on the air measuring simple cover, amorphous natural ventilation is organized as orderly natural ventilation, increased the air wind speed of measuring in the air channel greatly by limited measurement air channel area, improved measuring accuracy, improved natural ventilation because of instability, measure little, at random to the inaccuracy of measurement result.
A kind of field simple determination method for necessary quantity of residential building natural ventilation that the present invention proposes is simple, the air measuring simple cover is made and is easy for installation, adopt conventional pibtot's tub or anemoscope just can realize air measuring, measure with low costly, be fit to in-site measurement necessary quantity of residential building natural ventilation.
Description of drawings
Fig. 1 is a natural ventilation necessary amount in-site measurement front schematic view of the present invention.
Fig. 2 is a natural ventilation necessary amount in-site measurement side schematic view of the present invention.
Fig. 3 is a natural ventilation necessary amount in-site measurement schematic diagram of the present invention.
1. residential housing, 2. indoor thermal source, 3. bottom air inlet, 4. bottom air intake unlatching mouth, 5. top air outlet, 6. top air-out unlatching mouth, 7. air measuring simple cover, 8. measurement air channel, 9. opening seal pad.
Embodiment
The present invention is described in detail below in conjunction with drawings and Examples, but present embodiment is not limited to the present invention, and every employing similarity method of the present invention and similar variation thereof all should be listed protection scope of the present invention in.
Present embodiment is a kind of field simple determination method for necessary quantity of residential building natural ventilation, and its principle as shown in Figure 1, 2, 3.Top and the bottom opening to residential housing 1 is analyzed, by highly different bottom air inlet 3 and the top air outlets 5 of dividing.Before measuring the indoor natural ventilating necessary amount, at first open the certain air-admitting surface in bottom, promptly keep the bottom air intake to open that mouthfuls 4 open area is not more than all bottom air-admitting surfaces and the bottom air intake is opened the 15%-30% of open area, select in the top air outlet 5 one to open mouthfuls 6 then as the top air-out.Air measuring simple cover 7 is close to the top air-out opens mouthful 6 inboards, make indoor air flows flow to outdoor by air measuring simple cover 7.Should open all room inside doors of being appraised and decided in the building during mensuration, indoor have the people or the thermals source such as equipment or illumination that are equivalent to the design load amount and dispel the heat.
After outdoor air was opened in mouthful 4 inlet chambers by limited bottom air intake, under the effect that indoor thermal source 2 dispels the heat, the air heat absorption heated up and rises, and upwards flows to the top air-out along indoor channel and opens mouth 6, flows to outdoor by air measuring simple cover 7.
It measured air channel and seamless tight connection of opening seal pad when the air measuring simple cover was made, and the air measuring simple cover should be selected on-deformable material.At first on the measurement air channel 8 on the air measuring simple cover 7, stamp measured hole before the measurement by the relevant air measuring standard of country, utilize conventional must trustship measuring instrument or measuring wind speed instrument, measure by measuring the air mass flow in the air channel by national standard apoplexy measuring method, measured air quantity is the natural ventilation necessary amount of this residential housing.
Air measuring simple cover 7 can be according to the air outlet characteristics field fabrication of on-the-spot top, measurement air channel length on the air measuring simple cover must be greater than the 3-4 that measures the long limit of duct cross-section doubly, opening seal pad 9 should be opened the area of mouth 6 greater than the air-out of selected top, when air measuring simple cover 7 is installed, opening seal pad 9 can adopt certain method to be close to the top air-out and open mouth 6, makes room air flow to outdoor by air measuring simple cover 7.
The selected bottom of measurement natural ventilation necessary amount air intake unlatching mouth 4 and top air-out unlatching mouth 6 should be avoided the influence of outside wind pressure, or can take certain measure to avoid the influence of outside wind pressure in the outside of bottom air intake unlatching mouth and top air-out unlatching mouth.
Claims (9)
1. field simple determination method for necessary quantity of residential building natural ventilation, it is characterized in that: open the certain window areas in residential housing bottom, make in the outdoor air nature inlet chamber, outdoor air in the inlet chamber rises because of indoor thermal source heat radiation heat-absorption air heats up, a fan window of setting in the air outlet of top is opened mouth as the top air-out, open mouthful indoor in this top air-out the air measuring simple cover is installed, utilize the wind quantity test Instrument measuring by measuring the air quantity in air channel, measured air quantity is a necessary quantity of residential building natural ventilation.
2. assay method according to claim 1, it is characterized in that: the residential housing of being surveyed has and outdoor bottom air inlet that communicates and top air inlet, measuring the top air outlet adopted and lower air outlet at least can be by indoor a kind of passage UNICOM, should open all room inside doors of being appraised and decided in the building during mensuration, residential housing is indoor to have thermal source to dispel the heat.
3. assay method according to claim 1 and 2 is characterized in that: a kind of in described indoor thermal source behaviour, equipment or the illumination or some kinds, its heat dissipation capacity should stipulate to be not less than design load during measurement.
4. assay method according to claim 1 and 2 is characterized in that: when measuring the natural ventilation necessary amount, the bottom air intake is opened open area and is no more than all air inlets of bottom and opens the 15%-30% of open area.
5. assay method according to claim 1 and 2, it is characterized in that: in the air outlet of residential housing top, the window of the convenient test that selection one fan can be opened is opened mouth as the top air-out, and opens mouthful indoor in this top air-out an air measuring simple cover is installed.
6. assay method according to claim 1 and 2, it is characterized in that: selected bottom air intake unlatching mouth and top air-out unlatching mouth can be avoided the influence of outside wind pressure, or can take certain measure to avoid the influence of outside wind pressure in the outside of bottom air intake unlatching mouth and top air-out unlatching mouth.
7. assay method according to claim 1 and 2, it is characterized in that: the air-out of selected top is opened mouthful air measuring simple cover that goes up installation and is formed by measuring air channel and opening seal pad, measured hole position, quantity, size on the measurement air channel should meet the requirement of national relevant air measuring standard, measures air channel length and should be 3-4 times that measures duct cross-section length limit.
8. assay method according to claim 7, it is characterized in that: the opening seal pad of opening the air measuring simple cover of installing on the mouth at the top air intake must be opened mouth greater than the air-out of selected top, should cover the top air intake during installation fully and open mouthful, make the room air can only be by outside the measurement air channel delivery chamber on the air measuring simple cover.
9. assay method according to claim 7 is characterized in that: open a mouthful air measuring simple cover of installing at the top air intake, it measures air channel and seamless tight connection of opening seal pad, and the air measuring simple cover should be selected on-deformable material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200910200460A CN101788311A (en) | 2009-12-22 | 2009-12-22 | Field simple determination method for necessary quantity of residential building natural ventilation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910200460A CN101788311A (en) | 2009-12-22 | 2009-12-22 | Field simple determination method for necessary quantity of residential building natural ventilation |
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| CN101788311A true CN101788311A (en) | 2010-07-28 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928244A (en) * | 2012-10-23 | 2013-02-13 | 重庆海润节能研究院 | Device and method for testing micro-pressure ventilation performance |
| CN106649942A (en) * | 2016-09-29 | 2017-05-10 | 上海理工大学 | Method for correcting natural ventilation rates of buildings by utilizing structure coefficients of buildings |
| CN108593247A (en) * | 2018-04-08 | 2018-09-28 | 上海理工大学 | The method of available ventilation amount between four series connection rooms of measurement |
| CN108956046A (en) * | 2018-07-09 | 2018-12-07 | 尚廷东 | A kind of building element testing machine and its building element test cover |
| CN109708231A (en) * | 2018-12-27 | 2019-05-03 | 湖南大学 | A kind of gravity-flow ventilation control method based on minimum fresh air requirmente and wind pressure hot pressing distribution |
| CN110095245A (en) * | 2019-05-27 | 2019-08-06 | 陕西助智信息技术有限公司 | A kind of buildings model natural indoor ventilation tester convenient for safeguarding |
-
2009
- 2009-12-22 CN CN200910200460A patent/CN101788311A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928244A (en) * | 2012-10-23 | 2013-02-13 | 重庆海润节能研究院 | Device and method for testing micro-pressure ventilation performance |
| CN106649942A (en) * | 2016-09-29 | 2017-05-10 | 上海理工大学 | Method for correcting natural ventilation rates of buildings by utilizing structure coefficients of buildings |
| CN106649942B (en) * | 2016-09-29 | 2020-03-20 | 上海理工大学 | Method for correcting building natural ventilation quantity by using building structure coefficient |
| CN108593247A (en) * | 2018-04-08 | 2018-09-28 | 上海理工大学 | The method of available ventilation amount between four series connection rooms of measurement |
| CN108956046A (en) * | 2018-07-09 | 2018-12-07 | 尚廷东 | A kind of building element testing machine and its building element test cover |
| CN108956046B (en) * | 2018-07-09 | 2024-06-07 | 广元建工集团有限公司 | Building element testing machine and building element testing cover thereof |
| CN109708231A (en) * | 2018-12-27 | 2019-05-03 | 湖南大学 | A kind of gravity-flow ventilation control method based on minimum fresh air requirmente and wind pressure hot pressing distribution |
| CN110095245A (en) * | 2019-05-27 | 2019-08-06 | 陕西助智信息技术有限公司 | A kind of buildings model natural indoor ventilation tester convenient for safeguarding |
| CN110095245B (en) * | 2019-05-27 | 2020-12-25 | 博兴兴博城建投资集团有限公司 | Building model indoor natural ventilation testing arrangement convenient to maintain |
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Open date: 20100728 |