A method for analyzing and evaluating energy consumption of public buildings

Abstract

The invention discloses a method for analyzing and evaluating energy consumption of a public building, and belongs to the technical field of building energy consumption analysis; the method comprises the following steps: S1, classifying the energy consumption of a building into heating energy consumption and non-heating energy consumption; S2, querying a database to obtain a rated heating energy consumption assessment index; S3, correcting the rated heating energy consumption assessment index by degree-days to obtain an actual heating energy consumption assessment index; S4, searching a database to obtain a rated non-heating energy consumption assessment index, and calculating an actual non-heating energy consumption assessment index; S5, calculating the actual heating energy consumption and non-heating energy consumption of the building, and S6, comparing the actual building energy consumption with the assessment index, and assessing it with a strip ruler; the invention effectively solves the problem that the calculation method of the assessment index does not consider the heat source and pipe network loss and is inconsistent with the actual situation; and strengthens the quantitative management of building energy consumption through an overall analysis and evaluation system.

Description

Technical Field

[0001] The present invention relates to the technical field of building energy consumption analysis, and more specifically, to a method for analyzing and evaluating energy consumption of public buildings. Background Art

[0002] Implementing total energy consumption control is an important strategy in my country. In order to implement the national goals of energy conservation, environmental protection, and sustainable development, strengthen scientific and effective management, effectively improve the effectiveness of energy conservation and emission reduction, and standardize the total amount and intensity of energy use in public buildings, an objective and scientific building energy measurement method and evaluation system is needed.

[0003] my country has a vast territory, a large latitude span, and complex climatic conditions, covering multiple climate zones. In the north, winter heating energy consumption is the main part of building energy consumption. Heating energy consumption not only depends on the thermal performance of the building itself, but is also closely related to the heat source, pipeline network, and system operation. It is necessary to consider the impact of factors such as climate characteristics, building envelope performance, heating equipment energy efficiency, and energy type on building heating energy consumption. In previous cases of calculating heating energy consumption, the conversion coefficient was usually directly multiplied on the basis of the heat consumption assessment index. The assessment index directly calculated did not take into account the loss of heat source and pipeline network, which was inconsistent with the actual situation.

[0004] Building energy consumption is closely related to the energy-saving degree of building design and construction, and is also closely related to people's energy-saving behavior and management methods. In the past, there was a lack of a method to rate the actual energy consumption, and it was not possible to intuitively feel the amount of energy consumption of public buildings. Only by evaluating the actual energy consumption of various types of buildings and then limiting it within a certain range can we truly implement an effective way to save energy and reduce consumption in buildings. Summary of the invention

[0005] 1. Technical problems to be solved

[0006] The purpose of the present invention is to provide a method for analyzing and evaluating energy consumption of public buildings to solve the problems raised in the above background technology:

[0007] The traditional method of calculating assessment indicators does not take into account heat sources and pipeline network losses, which is inconsistent with the actual situation.

[0008] The present invention systematically calculates, analyzes and evaluates various types of energy consumption in buildings, can achieve quantitative management of building energy consumption, promote the advancement of energy-saving technologies and industrial upgrading, and contribute to emission reduction and carbon reduction. The use of strip-shaped marking rulers to assess building energy consumption facilitates the comparison of actual energy consumption with various constraint indicators and the division of energy-saving levels, making the energy-saving situation clear at a glance and easy to understand.

[0009] 2. Technical solution

[0010] A method for analyzing and evaluating energy consumption of public buildings comprises the following steps:

[0011] S1. Collect building information and classify building energy consumption into heating energy consumption and non-heating energy consumption;

[0012] S2. For buildings using conventional heating, query the database to obtain the rated heating energy consumption assessment index based on the building location, building type and boiler type;

[0013] S3. For buildings that use direct electricity supply, the actual heating energy consumption assessment index can be obtained by querying the direct electricity supply database;

[0014] S4. Correct the rated heating energy consumption assessment index by degree days to obtain the actual heating energy consumption assessment index;

[0015] S5. Search the database according to the building type of the building to obtain the rated non-heating power consumption assessment index, and calculate the actual non-heating power consumption assessment index in combination with the air conditioning correction coefficient;

[0016] S6, collect the actual heating energy consumption assessment indicators and the actual non-heating electricity consumption assessment indicators obtained in S2-S5 to establish an evaluation system;

[0017] S7. The heating energy consumption is divided into conventional heating and direct electricity supply, and the actual heating energy consumption is obtained;

[0018] S8. Non-heating energy consumption is divided into non-heating electricity consumption and other energy consumption, and the actual non-heating energy consumption is calculated separately;

[0019] S9. Integrate the actual heating energy consumption and the actual non-heating energy consumption, and then input them into the evaluation system for evaluation to obtain the final evaluation result.

[0020] Preferably, S4 comprises the following steps:

[0021] S4.1. The calculation formula of degree-day correction coefficient is shown in formula (1).

[0022]

[0023] Where β is the correction factor for heating degree days; HDD X HDD is the number of heating degree days (℃·d) during the heating period in each region based on 20℃. 20 is the number of heating degree days in the heating period of each place in a standard meteorological year based on 20℃ (℃·d);

[0024] S4.2. The rated heating energy consumption assessment index is corrected to obtain the actual heating energy consumption assessment index

[0025] e1=e 1s β (2)

[0026] Among them, e1 is the actual heating energy consumption assessment index, e 1s It is the assessment indicator for rated heating energy consumption.

[0027] For buildings using conventional heating, inquiries are made based on whether a heat meter is installed. If a heat meter is not installed, the database is queried based on the building location, building type, and boiler type to obtain the rated heating energy consumption assessment index e 1s If a heat meter is installed, directly query the database to obtain the rated heating energy consumption assessment index e 1s ;

[0028] For buildings that use direct electricity supply, query the direct electricity supply database to obtain the rated heating energy consumption assessment index e 1s ;

[0029] Preferably, S5 comprises the following steps:

[0030] S5.1. Query the database according to the building type to be evaluated to obtain the rated non-heating power consumption assessment index e 21 ;

[0031] S5.2. Determine whether the building has air-conditioning electricity consumption and calculate the actual non-heating electricity consumption assessment indicators separately

[0032] e2=e 21 (3)

[0033] e2=e 21 *(1+0.03*γ) (4)

[0034] Among them, formula (3) is the calculation formula for the non-heating power consumption assessment index of buildings without air conditioning, e2 is the actual non-heating power consumption assessment index, formula (4) is the calculation formula for the actual non-heating power consumption assessment index of buildings with air conditioning electricity, and γ is the ratio of the local air-conditioning degree-days to the air-conditioning degree-days at the experimental site in the non-heating power consumption air-conditioning correction coefficient;

[0035] S5.3 Query the database according to the building type of the building to be evaluated to obtain the non-heating other energy consumption assessment index e3 of the building;

[0036] S5.4. Calculate the actual non-heating energy consumption assessment index e f

[0037] e f =e2+e3 (5)

[0038] Preferably, the S7 comprises the following steps:

[0039] S7.1. For buildings using conventional heating, heating energy consumption is calculated separately based on whether a heat meter is installed.

[0040]

[0041]

[0042] Among them, formula (6) is the calculation formula for heating energy consumption without heat meter, q1 is the actual heating energy consumption, Q 11 is the heat supply of the boiler room heat meter, η is the pipe network efficiency, ε is the boiler efficiency, A 11 The total heating area of ​​the pipeline network in the boiler room;

[0043] Formula (7) is the calculation formula for heating energy consumption with heat meter, Q 12 is the reading of the building heat meter, A1 is the heating area of ​​the building;

[0044] S7.2 For buildings that use direct electricity supply for heating, the heating energy consumption is calculated using formula (8):

[0045]

[0046] In the formula, Q 13 Take meter readings for electric heating.

[0047] Preferably, the S8 comprises the following steps:

[0048] S8.1. For non-heating electricity consumption, use formula (9) to calculate

[0049]

[0050] Among them, q2 is the actual non-heating electricity consumption, Q2 is the total meter reading, and A2 is the building area covered by the meter;

[0051] S8.2. For other energy consumption, use formula (10) to calculate according to the energy consumption type and energy usage.

[0052]

[0053] q3 is other non-heating energy consumption per unit area, e Q is the energy consumption, ψ is the energy conversion coefficient, and A is the building area;

[0054] S8.3. Add the actual non-heating electricity consumption to other non-heating energy consumption per unit area to get the actual non-heating energy consumption.

[0055] q f =q2+q3 (11)

[0056] Among them, q f is the actual non-heating energy consumption.

[0057] 3. Beneficial effects

[0058] Compared with the prior art, the advantages of the present invention are:

[0059] 1. The present invention adopts a research method that combines theoretical simulation with field research. First, the energy consumption of public buildings in different climate zones and different energy-saving levels in the typical meteorological year heating period is simulated, and then the actual energy consumption data is investigated and collected for comparative verification, so as to obtain relatively scientific energy consumption data that takes into account both theory and practice.

[0060] 2. The present invention takes into account the heat source and pipe network loss when calculating the heating energy consumption without a heat meter, which is more practical;

[0061] 3. The present invention can evaluate the heating energy consumption level, non-heating energy consumption level and overall evaluation results separately, and use energy consumption identification scale to classify the energy consumption, so that the energy saving effect of public buildings can be intuitively felt; by using the strip identification scale for the first time to assess the building energy consumption, it is convenient to classify the actual energy consumption, and output the evaluation results quickly and intuitively. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 It is a flow chart for calculating the actual energy consumption assessment index of buildings;

[0063] Figure 2 It is a flow chart for calculating the actual energy consumption per unit area of ​​the building;

[0064] Figure 3 It is a bar graph for energy consumption level evaluation. DETAILED DESCRIPTION

[0065] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0066] In the description of the present invention, “plurality” means two or more than two, unless otherwise clearly and specifically defined.

[0067] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] Embodiment 1:

[0069] Analysis of heating assessment indicators in Xinjiang shows that Xinjiang has a vast territory, a wide latitude span, and complex climatic conditions, covering five climate zones (severe cold zones A, B, and C, cold zones A and B). Rated heating energy consumption assessment indicators are divided into constraint values, benchmark values, guide values, and pioneer values ​​from high to low.

[0070] The method for evaluating heating energy consumption levels taking degree-day correction into account is:

[0071] Step 1: Collect building information;

[0072] Step 2: For buildings using conventional heating, query the database to obtain the rated heating energy consumption assessment index based on the building location, building type and boiler type;

[0073] The database in Table 1 is used to evaluate buildings with conventional heating temperature and no building heat meter installed. The rated heating energy consumption assessment indicators are screened out according to the building location, building organization type and boiler type selected by the user.

[0074]

[0075]

[0076] Table 1

[0077] Step 3: For buildings that use direct electricity supply, querying the direct electricity supply database can obtain the actual heating energy consumption assessment index;

[0078] The database in Table 2 can be used to evaluate buildings with building heat meters installed in direct electricity or conventional heating. The rated heating energy consumption assessment indicators are screened out according to the building location and building organization type selected by the user.

[0079]

[0080] Table 2

[0081] Step 4: Correct the rated heating energy consumption assessment index by degree days to obtain the actual heating energy consumption assessment index;

[0082] Step 4.1: The degree-day correction factor calculation formula is shown in formula (1):

[0083]

[0084] Where β is the correction factor for heating degree days; HDD X HDD is the number of heating degree days (℃·d) during the heating period in each region based on 20℃. 20 is the number of heating degree days in the heating period of each place in a standard meteorological year based on 20℃ (℃·d);

[0085] Step 4.2: After the rated heating energy consumption assessment index is corrected, the actual heating energy consumption assessment index is obtained

[0086] e1=e 1s β (2)

[0087] Among them, e1 is the actual heating energy consumption assessment index, e 1s It is the assessment indicator for rated heating energy consumption.

[0088] Step 5: The heating energy consumption is divided into conventional heating and direct electricity supply, and the actual heating energy consumption is calculated respectively;

[0089] Step 5.1: For buildings using conventional heating, heating energy consumption is calculated separately based on whether a heat meter is installed.

[0090]

[0091]

[0092] Among them, formula (6) is the calculation formula for heating energy consumption without heat meter, q1 is the actual heating energy consumption, Q 11 is the heat supply of the boiler room heat meter, η is the pipe network efficiency, ε is the boiler efficiency, A 11 The total heating area of ​​the pipeline network in the boiler room;

[0093] Formula (7) is the calculation formula for heating energy consumption with heat meter, Q 12 is the reading of the building heat meter, A1 is the heating area of ​​the building;

[0094] Step 5.2: For buildings that use direct electricity supply for heating, the heating energy consumption is calculated using formula (8):

[0095]

[0096] In the formula, Q 13 Take meter readings for electric heating.

[0097] Step 6. According to the constraint value, reference value, guide value and pioneer value of the rated heating energy consumption assessment index in Table 1 or Table 2 corresponding to the building location, building type and heating method, the above four values ​​are corrected by the number of heating period days to obtain the actual heating energy consumption assessment index; the evaluation system uses a bar ruler to display, calculates the heating energy consumption according to the actual heating method and the presence or absence of a heat meter, compares the calculated q1 with the actual assessment index, and obtains the building heating energy consumption level evaluation, and intuitively displays the evaluation results through a bar ruler.

[0098] Embodiment 2:

[0099] The method for evaluating the heating energy consumption level considering the degree-day correction and indoor temperature correction is as follows:

[0100] Step 1: Collect building information;

[0101] Step 2: For buildings that use conventional heating and are not equipped with building heat meters, query the database in Table 1 to obtain the rated heating energy consumption assessment index based on the building location, building type, and boiler type;

[0102] Step 3: For buildings that use direct electricity supply and buildings that install building heat meters in conventional heating, the rated heating energy consumption assessment index can be obtained by querying the direct electricity supply database in Table 2;

[0103] Step 4: Correct the rated heating energy consumption assessment index by degree days and indoor temperature to obtain the actual heating energy consumption assessment index;

[0104] Step 4.1: The degree-day correction factor calculation formula is shown in formula (1):

[0105]

[0106] Where β is the correction factor for heating degree days; HDD X HDD is the number of heating degree days (℃·d) during the heating period in each region based on 20℃. 20 is the number of heating degree days in the heating period of each place in a standard meteorological year based on 20℃ (℃·d);

[0107] Step 4.2: The indoor temperature correction coefficient calculation formula is shown in formula (12):

[0108]

[0109] Where, α is the indoor temperature correction coefficient; t w,pj is the average outdoor temperature during the local heating period of the year (℃); t n,spj The actual average indoor temperature of the building in that year (℃)

[0110] Step 3.3: After the rated heating energy consumption assessment index is corrected, the actual heating energy consumption assessment index is obtained

[0111] e1=e 1s ·α·β (13)

[0112] Among them, e1 is the actual heating energy consumption assessment index, e 1s It is the assessment indicator for rated heating energy consumption.

[0113] Step 5: The heating energy consumption is divided into conventional heating and direct electricity supply, and the actual heating energy consumption is calculated respectively;

[0114] Step 5.1: For buildings using conventional heating, heating energy consumption is calculated separately based on whether a heat meter is installed.

[0115]

[0116]

[0117] Among them, formula (6) is the calculation formula for heating energy consumption without heat meter, q1 is the actual heating energy consumption, Q 11 is the heat supply of the boiler room heat meter, η is the pipe network efficiency, ε is the boiler efficiency, A 11 The total heating area of ​​the pipeline network in the boiler room;

[0118] Formula (7) is the calculation formula for heating energy consumption with heat meter, Q 12 is the reading of the building heat meter, A1 is the heating area of ​​the building;

[0119] Step 5.2: For buildings that use direct electricity supply for heating, the heating energy consumption is calculated using formula (8):

[0120]

[0121] In the formula, Q 13 Take meter readings for electric heating.

[0122] Step 6. According to the heating mode and whether there is a meter, q1 is respectively brought into the revised Table 1 or Table 2. The corresponding climate zone can be matched according to the building location, and the specific assessment value can be matched according to the building type. The evaluation system uses a bar ruler to display the building heating energy consumption level evaluation, and the evaluation result is intuitively displayed through the bar ruler.

[0123] Embodiment 3:

[0124] The evaluation method for non-heating energy consumption level is:

[0125] Step 1: Collect building information;

[0126] Step 2: Search the database according to the building type of the building to obtain the rated non-heating power consumption assessment index, and calculate the actual non-heating power consumption assessment index in combination with the air conditioning correction coefficient;

[0127] Step 2.1: Query the database according to the building type of the building to be evaluated to obtain the rated non-heating power consumption assessment index e 21 ;

[0128] Table 3 The database can filter out the assessment indicators of non-heating electricity consumption according to the building type selected by the user. 21 .

[0129]

[0130] Table 3

[0131] Step 2.2: Determine whether the building has air conditioning electricity consumption, and calculate the actual non-heating electricity consumption assessment indicators separately

[0132] e2=e 21 (3)

[0133] e2=e 21 *(1+0.03*γ) (4)

[0134] Among them, formula (3) is the calculation formula for the non-heating power consumption assessment index of buildings without air conditioning, e2 is the actual non-heating power consumption assessment index, formula (4) is the calculation formula for the actual non-heating power consumption assessment index of buildings with air conditioning electricity, and γ is the ratio of the local air-conditioning degree-days to the air-conditioning degree-days at the experimental site in the non-heating power consumption air-conditioning correction coefficient;

[0135] The calculation method of the air conditioning correction coefficient is as follows: select a certain test point, for example, Urumqi (severe cold zone C) as the test site. In public buildings in Urumqi that use air conditioning, air conditioning power consumption accounts for 3% of the total power consumption. Therefore, public buildings in severe cold areas can make corrections to the air conditioning power consumption on this basis. For various public buildings in other climate zones, if institutions install air conditioning, then on the basis of the assessment indicators in Table 3, the corresponding assessment indicators are multiplied by the correction coefficient of (1+3%*local CDD26 / Urumqi CDD26) to obtain the non-heating energy consumption assessment indicator value per unit building area in the region. For example, Turpan's CDD26 is 579, and Urumqi's CDD26 is 36. Turpan's non-heating power consumption is multiplied by (1+3%*579 / 36), and the correction coefficient is 1.48.

[0136] Step 2.3 If the building has other non-heating energy consumption, query the database according to the building type of the building to be evaluated to obtain the other non-heating energy consumption assessment index e3 of the building;

[0137] Step 2.4: Calculate the actual non-heating energy consumption assessment index ef

[0138] e f =e2+e3 (5)

[0139] Step 3: If the building has no other energy consumption other than heating, then the non-heating electricity consumption assessment index e2 is the actual non-heating energy consumption assessment index e f ; If the building has other energy consumption other than heating, the actual non-heating energy consumption assessment index e f It is the sum of the non-heating electricity consumption assessment index e2 and the non-heating other energy consumption assessment index e3;

[0140] Step 3.1: For the non-heating electricity consumption of the building, use formula (9) to calculate

[0141]

[0142] Among them, q2 is the actual non-heating electricity consumption, Q2 is the total meter reading, and A2 is the building area covered by the meter;

[0143] Step 3.2: If the building has other energy consumption other than heating, then for other energy consumption, use formula (10) to calculate according to the energy consumption type and energy consumption

[0144]

[0145] q3 is other non-heating energy consumption per unit area, E Q is the energy consumption, ψ is the energy conversion coefficient, and A is the building area; the database in Table 4 is used to calculate the conversion coefficients of different energy types into electricity consumption in other non-heating energy consumption.

[0146] Table 4

[0147] Step 3.3: Add the actual non-heating electricity consumption to other non-heating energy consumption per unit area to get the actual non-heating energy consumption.

[0148] q f =q2+q3 (11)

[0149] Among them, q f is the actual non-heating energy consumption.

[0150] Step 4: Substitute the actual non-heating energy consumption into the calculated actual non-heating energy consumption assessment index table, and obtain the non-heating energy consumption level evaluation of the building to be evaluated corresponding to the specific assessment value.

[0151] Embodiment 4:

[0152] See also Figure 3, heating energy consumption level evaluation, non-heating energy consumption level evaluation, and overall evaluation results can be based on Figure 3 The evaluation system automatically obtains the corresponding energy consumption assessment index based on the building location, building type, building energy use mode, etc. and displays it in brackets. The actual energy consumption is calculated according to the calculation steps and output at the upper horizontal line. Then the system automatically corresponds to the rating area where the actual energy consumption is located.

[0153] Taking the heating energy consumption of Urumqi government offices as an example, Urumqi is a severe cold zone C, and the rated assessment index value of severe cold zone C government offices is: constraint value 150kWh / (m 2 ), the base value is 101kWh / (m 2 ), the guide value is 91kWh / (m 2 ), pioneer value 52kWh / (m 2 ). Through actual testing and calculation, the heating energy consumption of a certain administrative building during a heating period is 122kWh / (m 2 ), when the assessment indicators and actual energy consumption values ​​are embedded, they can be displayed on a bar chart.

[0154] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for analyzing and evaluating energy consumption of public buildings. It is characterized in that The following steps are involved: S1. Collect building information and classify building energy consumption into heating energy consumption and non-heating energy consumption. Heating energy consumption is divided into conventional heating and direct electricity supply; S2. For buildings using conventional heating, query the database to obtain the rated heating energy consumption assessment index based on the building location, building type and boiler type; S3. For buildings that use direct electricity supply, query the direct electricity supply database to obtain the rated heating energy consumption assessment index; S4. Correct the rated heating energy consumption assessment index by degree-days to obtain the actual heating energy consumption assessment index; S5. Search the database according to the building type of the building to obtain the rated non-heating power consumption assessment index, and calculate the actual non-heating power consumption assessment index by combining the air conditioning correction coefficient; query the database according to the building type of the building to obtain the actual non-heating other energy consumption assessment index; and comprehensively obtain the actual non-heating energy consumption assessment index; S5.

1. Query the database according to the building type to be evaluated to obtain the rated non-heating power consumption assessment index e 21 ; S5.

2. Determine whether the building has air-conditioning electricity consumption and calculate the actual non-heating electricity consumption assessment indicators separately （3） （4） Wherein, formula (3) is the calculation formula for the non-heating power consumption assessment index of buildings without air conditioning, e 2 is the actual non-heating electricity consumption assessment index, formula (4) is the calculation formula for the actual non-heating electricity consumption assessment index of buildings including air-conditioning electricity consumption, γ is the ratio of the local air-conditioning degree-days to the air-conditioning degree-days at the experimental site in the non-heating electricity consumption air-conditioning correction coefficient; S5.3 Query the database according to the building type to be evaluated, and obtain the non-heating energy consumption assessment index of the building. 3 ; S5.

4. Calculate the actual non-heating energy consumption assessment index e f （5）； S6, collect the actual heating energy consumption assessment indicators and the actual non-heating energy consumption assessment indicators obtained in S2-S5 to establish an evaluation system; S7. The heating energy consumption is divided into conventional heating and direct electricity supply and calculated separately to obtain the actual heating energy consumption; S7.

1. For buildings using conventional heating, heating energy consumption is calculated separately based on whether a heat meter is installed. （6） （7） Among them, formula (6) is the calculation formula for heating energy consumption without heat meter, q 1 Actual heating energy consumption, Q 11 is the heat supply of the boiler room heat meter, η is the pipe network efficiency, ε is the boiler efficiency, A 11 The total heating area of ​​the pipeline network in the boiler room; Formula (7) is the calculation formula for heating energy consumption with heat meter, Q 12 is the building heat meter reading; A 1 Heating area of ​​the building; S7.

2. For buildings that use direct electricity supply for heating, the heating energy consumption is calculated using formula (8): （8） In the formula, Q 13 Read the electric heating meter; S8. Non-heating energy consumption is divided into non-heating electricity consumption and other energy consumption, and the calculation is performed separately to obtain the actual non-heating energy consumption; S8.

1. For non-heating electricity consumption, use formula (9) to calculate （9） Among them, q 2 is the actual non-heating electricity consumption, Q 2 is the total meter reading, A 2 The building area covered by the meter; S8.

2. For other energy consumption, use formula (10) to calculate according to the energy consumption type and energy usage. （10） q 3 is other non-heating energy consumption per unit area, e Q is the energy usage, ψ is the energy conversion coefficient, and A is the building area; S8.

3. Add the actual non-heating electricity consumption to other non-heating energy consumption per unit area to get the actual non-heating energy consumption. （11） Among them, q f is the actual non-heating energy consumption; S9. Integrate the actual heating energy consumption and the actual non-heating energy consumption, and then input them into the evaluation system for evaluation to obtain the final evaluation result.

2. A method for analyzing and evaluating energy consumption of public buildings according to claim 1, It is characterized in that The S4 comprises the following steps: S4.

1. The calculation formula of degree-day correction coefficient is shown in formula (1). （1） Where β is the correction factor for heating degree days; HDD Ｘ The heating degree days in each region during the heating period of the year are based on 20℃, in ℃•d; HDD 20 The number of heating degree days in the heating period of each place in a standard meteorological year based on 20℃, in ℃•d; S4.

2. The rated heating energy consumption assessment index is corrected to obtain the actual heating energy consumption assessment index （2） Among them, e 1 is the actual heating energy consumption assessment indicator, e 1s It is the assessment indicator for rated heating energy consumption.

3. A method for analyzing and evaluating energy consumption of public buildings according to claim 1, It is characterized in that The evaluation system in S9 uses a bar ruler to display the evaluation process and the final evaluation result.

Images