CN113624918A - Indoor air quality evaluation method - Google Patents
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Abstract
An indoor air quality evaluation method scores five indoor air parameters of temperature, humidity, PM2.5, T-VOC and CO2 according to the characteristics of different parameters to obtain a temperature parameter score, a humidity parameter score and CO2Concentration parameter score, PM2.5 parameter score and T-VOC parameter score, wherein the temperature parameter score is calculated by adopting different standards in winter and summer, and the humidity score is calculated and divided into a dehumidifying season and a humidifying season according to the difference between winter and summer; according to different seasons and human comfort levels, a weight system and a unified standard of five indoor air parameters are formulated, a total score of indoor air quality is calculated according to the weight and a piecewise function, and the air quality is evaluated by comparing the numerical value of the total score with the unified standard; the invention calculates the air quality total score by adopting a mode of weighted average of five parameters and calculates the air quality total score by the total scoreIndoor air quality is measured.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of environmental evaluation, in particular to an indoor air quality evaluation method.
[ background of the invention ]
Along with the improvement of the living level of people and the demand for the comfort of living environment, the demand and the attention of people on the indoor environment are higher and higher, the demand on the indoor air is gradually changed into the attention on air multidimensional parameters from the attention on only a single temperature index, and the air multidimensional parameters mainly comprise humidity, pollutant content (T-VOC, PM2.5), CO2 concentration and the like.
At present, the evaluation of indoor air multidimensional parameter indexes has the following problems:
1. the same space is described by adopting mutually independent parameter indexes, so that a uniform evaluation standard is difficult to form; on one hand, different parameters have a mutual influence relationship, for example, the human body feels cold and hot in a specific environment as a result of the combined action of a plurality of parameters including temperature and humidity, and on the other hand, if one or more of the plurality of indexes is abnormal, the air quality of the current environment cannot be evaluated.
2. Some parameter indexes are closely related to other influence factors and need to be considered when evaluating the air quality, for example, the comfortable temperature definition in summer and winter is different, and the clothes worn indoors in winter are thicker than the clothes worn indoors in summer, so the comfortable temperature in winter is lower than that in summer.
3. The human body feels continuous to the parameter index change, but the parameter of the index is often a specific value, such as the index of T-VOC, the specification requires that the indoor temperature does not exceed 0.5mg/m3, if the index is 0.3mg/m3 and 0.4mg/m3 respectively, only the air with the index of 0.3mg/m3 is better than 0.4mg/m3 air, but the specific quality is much better, and no quantitative evaluation standard exists; for another example, the temperature range is desirably 24 to 26 ℃ but when the room temperature is 27 ℃, the evaluation criterion is lacking.
Therefore, the problem to be solved in the art is to provide an indoor air quality evaluation method capable of integrating multiple parameters.
[ summary of the invention ]
In order to solve the problems, the invention provides an indoor air quality evaluation method, which is used for scoring five indoor air parameters of temperature, humidity, PM2.5, T-VOC and CO2 according to the characteristics of different parameters so as to obtain a temperature parameter score, a humidity parameter score and a CO parameter score2Concentration parameter score, PM2.5 parameter score, and T-VOC parameter score, wherein the temperature parameter score is calculated during winterAdopting different standards in summer, and dividing the calculation of the value of the humidity into a dehumidifying season and a humidifying season according to the difference between winter and summer; according to different seasons and human comfort levels, a weight system and a unified standard of five indoor air parameters are formulated, a total score of the indoor air quality is calculated according to the weight and a piecewise function, and the air quality is evaluated by comparing the numerical value of the total score with the unified standard.
Further, the temperature parameter scores are calculated according to summer and winter respectively, value1 is the difference value between the indoor temperature and the recognized comfortable temperature of 26 ℃, score1 is the temperature parameter score, and score1 is calculated by adopting a piecewise function.
Further, the humidity parameter score is calculated according to the divided wetting season and the divided dehumidifying season in winter and summer, value2 is a percentage value of indoor relative humidity, score2 is the humidity parameter score, and score2 is calculated according to a piecewise function.
Further, said CO2Concentration parameters are calculated according to a unified calculation standard all seasons, two index values of 700ppm and 1000ppm are used as important bases for classification, and value3 is used as indoor CO2Concentration, score3 is CO2And (4) scoring the concentration parameter.
Further, the PM2.5 parameter score and the T-VOC parameter score are calculated according to a unified calculation standard all seasons, and score4 is the indoor PM2.5 content, score5 is the indoor T-VOC content, value4 is the PM2.5 parameter score, and value5 is the T-VOC parameter score.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the difference value with standard value (including specification requirement and recognized comfort index) and according to different functions, five parameters for measuring indoor air quality are calculated respectively.
2. For the two parameters of temperature and humidity, different calculation methods are respectively adopted according to the human body requirements in different seasons and the operation conditions of the house and the air processing equipment, namely, when the temperature or the humidity is the same, scores can be different in different seasons.
3. The air quality total score is calculated by adopting a mode of weighted average of five parameters, and the indoor air quality is measured through the total score.
[ description of the drawings ]
FIG. 1 is a hierarchical table and functional image of summer temperature parameters in the present invention.
Fig. 2 is a hierarchical table and functional image of winter temperature parameters in accordance with the present invention.
FIG. 3 is a hierarchical table and functional image of humidity parameters during the dehumidification season of the present invention.
FIG. 4 is a hierarchical table and functional image of humidity parameters during the humidification season of the present invention.
FIG. 5 shows CO in the present invention2Grading table of concentration parameters.
FIG. 6 is a hierarchical table and functional image of the PM2.5 parameter of the present invention.
FIG. 7 is a table and functional image of the T-VOC parameter of the present invention.
[ detailed description ] embodiments
The directional terms of the present invention, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", etc., are only directions in the drawings, and are only used to explain and illustrate the present invention, but not to limit the scope of the present invention.
The method scores five indoor air parameters of temperature, humidity, PM2.5, T-VOC and CO2 according to the characteristics of different parameters, wherein the value calculation of the temperature adopts different standards in winter and summer, and the value calculation of the humidity is divided into a dehumidifying season and a humidifying season according to the difference between winter and summer; according to different seasons and human comfort levels, a weight system and a unified standard of five indoor air parameters are formulated, the total score of the indoor air quality is calculated according to the weight, and the air quality is evaluated by comparing the numerical value of the total score with the unified standard.
Firstly, calculating the temperature parameter score:
according to the values calculated in summer and winter respectively, the value1 is the difference value between the indoor temperature and the recognized comfortable temperature, and score1 is the temperature parameter score, and the unit is; in summer, heat is transferred from the outdoor to the indoor, the room temperature tends to rise, an air conditioning system operates in a refrigeration mode, and the influence of high temperature on the comfort level of people is large. Although the body feeling is influenced when the temperature is too low, the air conditioning system cannot actively reduce the set temperature unless a lower room temperature is set artificially, and the indoor temperature is usually above a human body feeling comfortable interval, so that the evaluation method mainly inspects the condition that the temperature is higher than the upper part of the acknowledged comfortable interval in summer; also, during winter, mainly temperature higher than below the recognized comfort zone is considered.
As shown in FIG. 1, value1 is calculated in summer, when the value1 is more than or equal to 4, the indoor temperature exceeds 30 ℃, the human body obviously feels that the temperature is too high to cause great discomfort, and therefore score1 is made to be 0; when 2 is more than or equal to value1<4, the indoor temperature is higher, the human body feels slightly uncomfortable, and the score is 0-60 calculated by score 1-90- (value1-1) × 30; when the value1 is more than or equal to 1 and less than 2, the chamber is closer to 26 ℃, the human body has no obvious feeling, and the score1 is between 60 and 90; when-1 is not more than value1<1, the difference between the room temperature and the comfortable temperature is less than 1 ℃, the human body feels cool and comfortable, and the score is between 90 and 100 by score 1-100-value 1-1; when-4 is not less than value < -1, the human body feels cold, and the score is 75-90 calculated by score1 (90 + (value +1) × 5; when value1< -4, the human body feels cold, score1 ═ 75; similarly, the value1 is calculated in winter as shown in FIG. 2.
Secondly, calculating the humidity parameter score:
the humidity is calculated according to the humidification season and the dehumidification season respectively, and because most areas of China mainland have climatic characteristics of rain and heat in the same period, the dehumidification season mainly comprises spring end and summer, and the humidification season mainly comprises winter and early spring. The scores calculated for the humid season and the dehumidified season, respectively, where value2 is the percentage (%) value of the indoor relative humidity; in the dehumidification season, the moisture content of outdoor air is high, and meanwhile, the indoor temperature is obviously lower than that of the outdoor when an air conditioning system is used, so that the indoor humidity tends to rise, the influence of high humidity on the comfort level of people is large, and the body feeling is influenced when the humidity is too low, but the indoor humidity is difficult to be treated to a low place by the prior art, and is usually above a body feeling comfortable interval, so that the evaluation method mainly inspects the condition that the humidity is higher than the upper part of the acknowledged comfortable interval in the dehumidification season; similarly, in winter, the situation that the humidity is higher than the lower part of the recognized comfort zone is mainly considered.
The relationship between dehumidification quaternary humidity score2 and humidity value2 is shown in fig. 3, and the relationship between humidification quaternary humidity score2 and humidity value2 is shown in fig. 4.
III, CO2And (3) calculating the concentration parameter score:
CO2the concentration has no obvious correlation with seasons and time, and can be calculated according to a unified calculation standard in all seasons; urban outdoor CO2The concentration is about 400-500ppm, and CO is generated in areas with rich vegetation such as forests2The concentration can be as low as below 400; indoor CO2The concentration is preferably controlled below 700ppm, and when indoor CO is generated2When the concentration exceeds 1000ppm, the health of human bodies is affected; thus CO2The concentration parameter score takes the two index values as important bases for grading, and the score value score3 and CO are2The relationship of the concentration value3 is shown in FIG. 5, where value3 is in ppm.
Fourthly, calculating the PM2.5 parameter score:
the PM2.5 content index in unit volume of air has no direct correlation with seasons, and all seasons can be calculated according to a unified calculation standard; the relationship between the PM2.5 parameter score value score4 and the PM2.5 content value4 is shown in FIG. 6, wherein value4 is expressed in μ g/m 3.
Fifthly, calculating the score of the T-VOC parameter:
the index of the T-VOC content (hereinafter referred to as T-VOC content) in unit volume of air has no direct correlation with seasons, and can be calculated according to a unified calculation standard all seasons. The T-VOC parameter score, score5, is related to the T-VOC content value5 in FIG. 7, wherein value5 is in mg/m 3.
Sixthly, calculating the total score
After the scores of the five air parameters are obtained through calculation, the total air quality score needs to be calculated in a weighted average mode according to the weight of each parameter, and the determination of the weight of each parameter needs to consider the following factors:
1. the degree of influence of numerical abnormality on the human body includes two aspects of health and comfort;
2. the sensitivity of the human body to parameter changes;
3. the purpose of introducing the evaluation method is to evaluate the processing capacity of the air processing equipment to the indoor air according to the grade of the processed air quality, and the main contradiction to be solved when a client uses the air processing equipment;
4. since the scores of the temperature and humidity parameters are related to seasons among the five parameters, the total score is calculated according to five seasonal modes of spring end (humidification, ventilation), summer (refrigeration, dehumidification, ventilation), winter (heating, humidification, ventilation), early spring (humidification, ventilation) and others, and is calculated according to different weighting systems.
Based on the above factors, the weight of each of the five air parameters in different seasons is as follows.
According to the weight, the total score of the indoor air quality can be calculated through weighted average, and the air quality can be further evaluated according to the total score.
| Total score | Comfort rating |
| score≥90.0 | (Comfort) |
| 80.0≤score<90.0 | Is more comfortable |
| 60.0≤score<80.0 | In general |
| 0≤score<60.0 | Discomfort |
In particular, if a certain parameter of the five parameters scores less than 60 points, the overall score is ranked as not immediately comfortable.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. The indoor air quality evaluation method is characterized in that five indoor air parameters of temperature, humidity, PM2.5, T-VOC and CO2 are scored according to the characteristics of different parameters so as to obtain a temperature parameter score, a humidity parameter score and a CO parameter score2Concentration parameter score, PM2.5 parameter score and T-VOC parameter score, wherein the temperature parameter score is calculated by adopting different standards in winter and summer, and the humidity score is calculated and divided into a dehumidifying season and a humidifying season according to the difference between winter and summer; according to different seasons and human comfort levels, a weight system and a unified standard of five indoor air parameters are formulated, a total score of the indoor air quality is calculated according to the weight and a piecewise function, and the air quality is evaluated by comparing the numerical value of the total score with the unified standard.
2. The indoor air quality evaluation method as claimed in claim 1, wherein the temperature parameter score is calculated in summer and winter, respectively, and score1 is calculated by using a piecewise function with value1 being a difference between an indoor temperature and a recognized comfortable temperature of 26 ℃ and score1 being a temperature parameter score.
3. The indoor air quality evaluation method as claimed in claim 1, wherein the humidity parameter score is calculated according to the winter and summer seasons for humidification and dehumidification, respectively, and score2 is calculated according to a piecewise function with value2 being a percentage value of indoor relative humidity and score2 being a humidity parameter score.
4. The indoor air quality evaluation method according to claim 1, wherein the CO is2Concentration parameters are calculated according to a unified calculation standard all seasons, two index values of 700ppm and 1000ppm are used as important bases for classification, and value3 is used as indoor CO2Concentration, score3 is CO2And (4) scoring the concentration parameter.
5. The indoor air quality evaluation method according to claim 1, wherein the PM2.5 parameter score and the T-VOC parameter score are calculated according to a unified calculation standard all seasons, and score4 is indoor PM2.5 content, score5 is indoor T-VOC content, value4 is PM2.5 parameter score, and value5 is T-VOC parameter score, respectively.
6. An indoor air quality evaluation method according to claim 1, wherein the total score is calculated in such a way that if one of the five parameters is less than 60 points, the total score is directly ranked as uncomfortable.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106018682A (en) * | 2016-05-10 | 2016-10-12 | 深圳星普森信息技术有限公司 | Method for computing and grading indoor air quality index |
| CN106021858A (en) * | 2016-05-06 | 2016-10-12 | 中科同德（北京）生态科技有限公司 | A calculating method for index evaluation data representing indoor air environment quality |
| CN106645573A (en) * | 2016-12-13 | 2017-05-10 | 上海市建工设计研究院有限公司 | Expression method of index for comprehensively evaluating indoor air quality |
| RU2636807C1 (en) * | 2016-06-29 | 2017-11-28 | федеральное государственное бюджетное образовательное учреждение высшего образования "Ивановский государственный энергетический университет имени В.И. Ленина" (ИГЭУ) | Estimation method of microclimate comfort in premises of habitable, public and office buildings |
| CN112903028A (en) * | 2021-03-03 | 2021-06-04 | 中国建筑股份有限公司 | Indoor environment personnel satisfaction evaluation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106021858A (en) * | 2016-05-06 | 2016-10-12 | 中科同德（北京）生态科技有限公司 | A calculating method for index evaluation data representing indoor air environment quality |
| CN106018682A (en) * | 2016-05-10 | 2016-10-12 | 深圳星普森信息技术有限公司 | Method for computing and grading indoor air quality index |
| RU2636807C1 (en) * | 2016-06-29 | 2017-11-28 | федеральное государственное бюджетное образовательное учреждение высшего образования "Ивановский государственный энергетический университет имени В.И. Ленина" (ИГЭУ) | Estimation method of microclimate comfort in premises of habitable, public and office buildings |
| CN106645573A (en) * | 2016-12-13 | 2017-05-10 | 上海市建工设计研究院有限公司 | Expression method of index for comprehensively evaluating indoor air quality |
| CN112903028A (en) * | 2021-03-03 | 2021-06-04 | 中国建筑股份有限公司 | Indoor environment personnel satisfaction evaluation method |
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