Method and device for calculating comprehensive index of natural ventilation performance quality of residential buildings

Abstract

The present invention discloses a method and device for calculating a comprehensive index of natural ventilation performance quality of a residential building. The calculation formula of the comprehensive index W of natural ventilation performance of a residential building is: W=k1·W X +k2·W Y ; Where k1 is the working day coefficient; k2 is the non-working day coefficient; W X W is the comprehensive index of indoor natural ventilation performance of residential buildings on weekdays; Y It is a comprehensive index of indoor natural ventilation performance of residential buildings on non-working days. The present invention takes into account the differences in indoor occupancy of residents at different times and in different building spaces, improves the comprehensiveness of indoor natural ventilation performance evaluation of residential buildings, facilitates the rational design of building plans based on natural ventilation performance data, and improves the adaptability of building design to different groups of people.

Description

Technical Field

[0001] The invention relates to the field of building technology, in particular to a method and a device for calculating a comprehensive index of natural ventilation performance quality of a residential building. Background Art

[0002] The design of residential buildings should fully consider the performance of natural ventilation. The indoor environment of buildings is largely regulated by natural ventilation. In addition to regulating the temperature and humidity of the air, it can also improve the indoor air quality, reduce energy consumption and improve the indoor environment. In the field of architectural design, if the natural ventilation performance data can be effectively used and the building plan can be reasonably designed, the living comfort of residents can be improved.

[0003] The ventilation design of residential buildings needs to consider the impact of the possibility of indoor occupants. The possibility of different members of a residential building being indoors at any given time varies greatly, which will cause different types of people to have different indoor thermal environment perceptions of the same building, which in turn leads to obvious differences in indoor occupancy for different household compositions and at different times. During time periods with a high probability of indoor occupants, if the room has good natural ventilation, the probability of indoor occupants feeling thermal comfort is greater. Therefore, the quality of indoor ventilation performance during time periods with a high probability of indoor occupants is the focus of building ventilation design.

[0004] At present, the evaluation of indoor natural ventilation mostly uses parameters such as air changes, average wind speed or air age under a single working condition as indicators. Most of the existing natural ventilation performance evaluations ignore the indoor differences of residents in buildings, including population differences, spatial differences and temporal differences. Because the existing evaluation indicators ignore the above differences, they lack comprehensiveness when evaluating the natural ventilation performance of residential buildings, and it is difficult to provide more targeted references for building design. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a method and device for calculating a comprehensive index of the natural ventilation performance quality of a residential building. By calculating the comprehensive index of indoor natural ventilation performance of a residential building, a more comprehensive reference opinion with higher adaptability to the population can be provided for the comprehensive evaluation of the natural ventilation performance of the building.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a method for calculating the comprehensive index of natural ventilation performance quality of residential buildings, and the calculation formula of the comprehensive index W of indoor natural ventilation performance of residential buildings is:

[0007] W=k1·W X +k2·W Y

[0008] Among them, k1 is the working day coefficient, that is, the ratio of the number of working days in the calculation period to the total number of days; k2 is the non-working day coefficient, that is, the ratio of the number of non-working days in the calculation period to the total number of days; W X is the comprehensive index of indoor natural ventilation performance of residential buildings on weekdays, W Y It is the comprehensive index of indoor natural ventilation performance of residential buildings on non-working days.

[0009] Considering that the possibility of people being indoors is significantly different between working days and non-working days, the present invention calculates the comprehensive index of natural ventilation performance according to the two time periods of working days and non-working days, and divides it into the comprehensive index of indoor natural ventilation performance on working days W and the comprehensive index of indoor natural ventilation performance on working days W. X and the comprehensive index of indoor natural ventilation performance on non-working days W Y Two indicators, W X The calculation formula is:

[0010]

[0011] Among them, N ij is the natural ventilation index of room i in the jth hour (1≤j≤24) on a standard day (the standard day is a day that is representative in terms of ventilation), P Xij is the probability of a resident being in room i at the jth hour on a weekday, that is, the probability of a resident appearing in room i at the jth hour on a weekday, S i For S i is the proportion of room i in the total indoor room area.

[0012] W Y The calculation formula is:

[0013]

[0014] Among them, P Yij is the probability of a resident being in room i at the jth hour on a non-working day, that is, the probability of a resident appearing in room i at the jth hour on a non-working day.

[0015] The advantage of the calculation process of the present invention is that, in the process of calculating the comprehensive index W of natural ventilation performance, various hourly data are obtained, including the hourly natural ventilation index of the standard day and the hourly possibility of the residents being indoors, and the difference in the proportion of working days and non-working days and the possibility of the residents being indoors during the calculation period are considered, and weighted integration calculation is performed to finally obtain the comprehensive index of natural ventilation of residential buildings. The temporal and spatial differences of the possibility of the residents being indoors in the building are comprehensively considered in the calculation process of the index, and the calculation results can be used for natural ventilation evaluation, and are more consistent with the rules of indoor behavior of the residents, so that the natural ventilation performance of residential buildings can be more comprehensively reflected, and a reference for the natural ventilation design of buildings can be provided in a more targeted manner.

[0016] In the present invention, the relevant parameters have the following value requirements:

[0017] 1) Standard daily ventilation index N ij , which is one of the three parameters: ventilation frequency, air age or average wind speed;

[0018] 2) Probability of being indoors on weekdays P Xij and non-working days in the room possibility P Yij The value range of is 0 to 1;

[0019] 3)Room area ratio S i The value range is: 0~1, and S1+S2+…+S i +…+S n =1;

[0020] 4) The value range of the working day coefficient k1 in the calculation period is: 0.6~1, the value range of the non-working day coefficient k2 in the calculation period is: 0~0.4, and k1+k2=1.

[0021] As an inventive concept, the present invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory; the processor executes the computer program to implement the steps of the method of the present invention.

[0022] As an inventive concept, the present invention also provides a computer program product, including a computer program / instruction; when the computer program / instruction is executed by a processor, the steps of the method of the present invention are implemented.

[0023] As an inventive concept, the present invention also provides a computer-readable storage medium having a computer program / instruction stored thereon; the computer program / instruction, when executed by a processor, implements the steps of the method of the present invention.

[0024] Compared with the prior art, the advantages of the present invention are as follows: the present invention takes into account the temporal and spatial differences in the possibility of residents staying indoors in the building, improves the comprehensiveness, comprehensiveness and pertinence of the calculation of the indoor natural ventilation performance index of residential buildings, and can reasonably design the building plan according to the natural ventilation performance data in the subsequent steps of the building design to improve the ventilation comfort of the residential building. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a floor plan of a residential unit in an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The embodiment of the present invention provides a method and device for calculating a comprehensive index of natural ventilation performance quality of a residential building, comprising the following steps:

[0027] (1) Figure 1 is a floor plan of a residential unit, in which the number of rooms in the house is divided into 7, denoted as 1, 2, ..., i, ..., 7 respectively; the proportion of room i in the total indoor area is denoted as S i The proportion of the total indoor area occupied by different rooms is recorded as S1, S2, S3, S4, S5, S6, and S7, as shown in Table 1.

[0028] Table 1i The proportion of room to total indoor area S i

[0029]

[0030] (2) Divide the standard day into 24 hours, with each hour denoted as j. Obtain the number of ventilation changes in room i in the jth hour of the standard day, denoted as N ij ; As shown in Table 2.

[0031] Table 2 Number of ventilation changes N in room i at the jth hour on a standard day ij (Second-rate)

[0032]

[0033]

[0034] (3) Obtain the probability of room i being in the room at the jth hour on a weekday, denoted as P Xij , as shown in Table 3.

[0035] Table 3 Probability P of being in room i at the jth hour during the working day Xij

[0036]

[0037]

[0038] (4) Obtain the probability of room i being occupied at the jth hour on a non-working day, denoted as P Yij , as shown in Table 4:

[0039] Table 4 The probability P of room i being in the room at the jth hour on a non-working day Yij

[0040]

[0041] (5)W X is the comprehensive index of indoor natural ventilation performance of residential buildings on working days, calculated by formula 1:

[0042]

[0043] W is calculated by formula 1 X=13.7 (times).

[0044] (6)W Y is the comprehensive index of indoor natural ventilation performance of residential buildings on non-working days, calculated by Formula 2:

[0045]

[0046] W is calculated by formula 2 Y =22.1 (times).

[0047] (7) The comprehensive index of indoor natural ventilation performance of residential buildings, W, is calculated by formula 3:

[0048] W=k1·W X +k2·W Y Formula 3

[0049] Taking the working day coefficient k1 as 0.7 and the non-working day coefficient k2 as 0.3, the value of the comprehensive index W of indoor natural ventilation performance of residential buildings calculated by Formula 3 is 16.2 (times).

[0050] It can be seen from the calculation process that the comprehensive index of indoor natural ventilation performance of residential buildings obtained by the present invention, in addition to the conventional ventilation frequency index, also more comprehensively considers the temporal and spatial differences in the possibility of residents staying indoors in the building, and can calculate the natural ventilation performance of residential buildings in a more targeted and comprehensive manner.

Claims

1. A method for calculating a comprehensive index of natural ventilation performance quality of residential buildings, characterized in that: The calculation formula for the comprehensive index W of indoor natural ventilation performance of residential buildings is: W=k1·W X +k2 W Y ; Among them, k1 is the working day coefficient, that is, the ratio of the number of working days in the calculation period to the total number of days; k2 is the non-working day coefficient, that is, the ratio of the number of non-working days in the calculation period to the total number of days; W X is the comprehensive index of indoor natural ventilation performance of residential buildings on weekdays, W Y It is the comprehensive index of indoor natural ventilation performance of residential buildings on non-working days; Comprehensive index of indoor natural ventilation performance of residential buildings on weekdays W X The calculation formula is: Among them, N ij is the natural ventilation index of room i at the jth hour of the standard day, P Xij is the probability of being in room i at the jth hour on a weekday, that is, the probability of a resident appearing in room i at the jth hour on a weekday, S i is the proportion of room i in the total indoor room area; the comprehensive index of indoor natural ventilation performance of residential buildings on non-working days W Y The calculation formula is: Among them, N ij is the natural ventilation index of room i at the jth hour of the standard day, P Yij is the probability of being in room i at the jth hour on a non-working day, that is, the probability of a resident appearing in room i at the jth hour on a non-working day, S i is the proportion of room i in the total indoor room area.

2. The method for calculating the comprehensive index of natural ventilation performance quality of residential buildings according to claim 1 is characterized in that: The value range of the working day coefficient k1 is: 0.6~1, the value range of the non-working day coefficient k2 is: 0~0.4, and k1+k2=1.

3. The method for calculating the comprehensive index of natural ventilation performance quality of residential buildings according to claim 1, characterized in that: Area ratio of each room S i The value range is: 0~1, and S1+S2+…+S n =1.

4. The method for calculating the comprehensive index of natural ventilation performance quality of residential buildings according to claim 1, characterized in that: Natural ventilation index N ij It is one of the three indicators of ventilation rate, air age or average wind speed in room i at hour j on the standard day.

5. The method for calculating the comprehensive index of natural ventilation performance quality of residential buildings according to claim 1, characterized in that: Possibility of working in the room Xij and non-working days in the room possibility P Yij The value range is: 0~1.

6. A computer device comprising a memory, a processor and a computer program stored in the memory; characterized in that: The processor executes the computer program to implement the steps of the method according to any one of claims 1 to 5.

7. A computer program product comprising a computer program / instructions; characterized in that When the computer program / instructions are executed by a processor, the steps of the method according to any one of claims 1 to 5 are implemented.

8. A computer-readable storage medium having a computer program / instruction stored thereon; characterized in that: When the computer program / instructions are executed by a processor, the steps of the method according to any one of claims 1 to 5 are implemented.

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