CN110873360B - Energy saving amount determining method and device for heating energy saving reconstruction project - Google Patents
Energy saving amount determining method and device for heating energy saving reconstruction project Download PDFInfo
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Abstract
The application discloses an energy saving amount determining method and device for a heating energy-saving reconstruction project. According to the method and the device, the heating energy consumption before and after energy-saving modification is modified to be under the same ideal condition, and then the periodic energy saving amount is calculated according to the heating energy consumption modification value before and after modification, so that the problem of large error of the result of the periodic energy saving amount caused by different outdoor temperatures before and after energy-saving modification or substandard heating quality can be solved.
Description
Technical Field
The invention relates to heating energy conservation, in particular to an energy-saving determination method and device for a heating energy-saving reconstruction project.
Background
The climate compensation energy-saving technology is a heating energy-saving technology which utilizes an optimized adjusting technology to adjust the heating load in time according to the outdoor temperature change so as to ensure that the indoor temperature is kept at the standard temperature, avoids energy waste caused by the standard exceeding of the indoor heating temperature, has obvious energy-saving effect and larger popularization area. With the large-area implementation of the energy management mode of the contract, the energy saving of the accurate certification project becomes an urgent need of the market. Energy saving of the project is generally determined by total energy consumption reduction in heating seasons before and after modification at present, and the verification method mainly has the following problems:
(1) the problem of errors caused by climate parameter differences before and after transformation cannot be solved. The heating energy consumption is greatly influenced by the change of the outside climate, and the outside climate parameters before and after the transformation cannot be completely the same, so that the current project energy-saving verification method is inaccurate, and the phenomenon of dispute frequently occurs.
(2) The problem of errors caused by substandard heating quality after transformation cannot be solved. If after energy-saving transformation, an energy-saving company reduces indoor heating temperature, so that the heating temperature cannot reach the standard, the energy-saving quantity is increased, and the current energy-saving quantity verification method cannot make up the leak.
Disclosure of Invention
In view of this, the invention provides a method and a device for determining energy saving amount of a heating energy-saving reconstruction project, so as to accurately verify the energy saving amount after the project reconstruction.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for determining energy saving amount of a heating energy-saving reconstruction project comprises the following steps:
determining a first mathematical relational expression of an energy consumption accumulated value of the whole heating period and an indoor and outdoor temperature difference time number accumulated value before project modification;
determining a second mathematical relational expression of the energy consumption integrated value of the whole heating period and the indoor and outdoor temperature difference time number integrated value after project modification;
determining an ideal indoor and outdoor temperature difference time number accumulated value under an ideal condition in a heating period;
and calculating and determining the energy saving amount of the heating period according to the first mathematical relational expression, the second mathematical relational expression and the ideal indoor and outdoor temperature difference time number accumulated value.
Optionally, the determining a first mathematical relationship between the energy consumption integrated value of the whole heating cycle and the integrated value of the indoor and outdoor temperature difference time number before project modification includes:
determining a first mathematical relation Q of an energy consumption accumulated value of the whole heating period and an indoor and outdoor temperature difference time number accumulated value before project reconstruction by adopting a linear fitting method1＝k1X1+b1Wherein Q is1For cumulative values of energy consumption, X1Is an integrated value of time number of indoor and outdoor temperature difference, k1Is a coefficient of constant value, b1Is a fixed value coefficient;
the second mathematical relational expression for determining the energy consumption integrated value of the whole heating period after project transformation and the indoor and outdoor temperature difference time number integrated value comprises the following steps:
determining a second mathematical relation between the energy consumption integrated value of the whole heating period and the indoor and outdoor temperature difference time number integrated value after project modification by adopting a linear fitting method, Q2＝k2X2+b2Wherein Q2For cumulative values of energy consumption, X2Is an integrated value of time number of indoor and outdoor temperature difference, k2Is a coefficient of constant value, b2Is a fixed value coefficient.
Optionally, the determining an ideal integrated value of the indoor and outdoor temperature difference time numbers under an ideal condition in a heating cycle includes:
according to the formula
Calculating and determining an ideal indoor and outdoor temperature difference time number accumulated value under an ideal condition in a heating period, wherein XeIs an ideal indoor and outdoor temperature difference time number accumulated value, t, under the ideal condition in a heating period0For a specified standard temperature in the room to be heated, twi2The average outdoor temperature of each sampling time period in a heating period is N, and the total number of the heating sampling time periods in the heating period is N.
Optionally, the calculating and determining the energy saving amount of the heating cycle according to the first mathematical relation, the second mathematical relation and the accumulated value of the time number of the ideal indoor and outdoor temperature difference includes:
calculating and determining a modified energy consumption integrated value before modification of the whole heating period before the project modification according to the first mathematical relational expression and the ideal indoor and outdoor temperature difference time number integrated value;
calculating and determining a modified energy consumption integrated value correction value of the whole heating period after project modification according to the second mathematical relational expression and the ideal indoor and outdoor temperature difference time number integrated value;
and calculating and determining the energy saving amount of the heating cycle according to the difference value of the energy consumption accumulated value correction value before modification and the energy consumption accumulated value correction value after modification and the efficiency of a heating heat source.
Optionally, the determining an ideal integrated value of the indoor and outdoor temperature difference time numbers under an ideal condition in a heating cycle includes:
determining the ideal indoor and outdoor temperature difference time number accumulated value under the ideal condition in a heating period after project reconstruction
An energy-saving amount determining device for a heating energy-saving reconstruction project, comprising:
the first determination module is used for determining a first mathematical relational expression of an energy consumption accumulated value of the whole heating period and an indoor and outdoor temperature difference time number accumulated value before project reconstruction;
the second determination module is used for determining a second mathematical relational expression of the energy consumption accumulated value of the whole heating period and the indoor and outdoor temperature difference time number accumulated value after project modification;
the temperature difference determining module is used for determining an ideal indoor and outdoor temperature difference time number accumulated value under an ideal condition in a heating period;
and the energy saving amount determining module is used for calculating and determining the energy saving amount of the heating period according to the first mathematical relational expression, the second mathematical relational expression and the ideal indoor and outdoor temperature difference time number accumulated value.
Optionally, the first determining module is specifically configured to: determining a first mathematical relation Q of an energy consumption accumulated value of the whole heating period and an indoor and outdoor temperature difference time number accumulated value before project reconstruction by adopting a linear fitting method1＝k1X1+b1Wherein Q is1For cumulative values of energy consumption, X1Is an integrated value of the time number of the indoor and outdoor temperature difference, k1Is a coefficient of constant value, b1Is a fixed value coefficient;
the second determining moduleThe method is specifically used for: determining a second mathematical relation Q of the energy consumption integrated value of the whole heating period and the indoor and outdoor temperature difference time number integrated value after project reconstruction by adopting a linear fitting method2＝k2X2+b2Wherein Q is2For cumulative values of energy consumption, X2Is an integrated value of time number of indoor and outdoor temperature difference, k2Is a coefficient of constant value, b2Is a fixed value coefficient.
Optionally, the temperature difference determining module is specifically configured to: according to the formula
Calculating and determining an ideal indoor and outdoor temperature difference time number accumulated value under an ideal condition in a heating period, wherein XeIs an ideal indoor and outdoor temperature difference time number accumulated value, t, under the ideal condition in a heating period0For a specified standard temperature in the room to be heated, twi2The average outdoor temperature of each sampling time period in a heating period is N, and the total number of the heating sampling time periods in the heating period is N.
Optionally, the energy-saving amount determining module includes:
the first correction value determining module is used for calculating and determining a correction value of the integrated value of the energy consumption before modification of the whole heating cycle before the project modification according to the first mathematical relational expression and the integrated value of the time number of the ideal indoor and outdoor temperature difference;
the second correction value determining module is used for calculating and determining the corrected value of the modified energy consumption integrated value of the whole heating cycle after project modification according to the second mathematical relation and the ideal indoor and outdoor temperature difference time number integrated value;
and the energy saving amount determining submodule is used for calculating and determining the energy saving amount of the heating period according to the difference value of the energy consumption accumulated value correction value before modification and the energy consumption accumulated value correction value after modification and the efficiency of a heating heat source.
Optionally, the temperature difference determining module is specifically configured to:
and determining an ideal indoor and outdoor temperature difference time number accumulated value under an ideal condition in a heating period after project reconstruction.
According to the technical scheme, compared with the prior art, the energy saving amount determining method and device for the heating energy-saving reconstruction project are disclosed in the embodiment of the invention. According to the method and the device, the heating energy consumption before and after energy-saving modification is modified to be under the same ideal condition, and then the periodic energy saving amount is calculated according to the heating energy consumption modification value before and after modification, so that the problem of large error of the result of the periodic energy saving amount caused by different outdoor temperatures before and after energy-saving modification or substandard heating quality can be solved.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a flow chart of a method for determining energy saving amount of a heating energy-saving reconstruction project according to an embodiment of the present invention;
FIG. 2 is a flowchart for determining energy savings during a heating cycle, according to an embodiment of the present invention;
FIG. 3 is a schematic illustration of determining a modification value of an energy consumption integrated value according to an embodiment of the disclosure;
FIG. 4 is a schematic structural diagram of an energy-saving determination device for a heating energy-saving modification project, which is disclosed by an embodiment of the invention;
fig. 5 is a schematic structural diagram of a power saving amount determining module according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a flowchart of an energy saving amount determining method for a heating energy saving modification project according to an embodiment of the present invention, and referring to fig. 1, the energy saving amount determining method for the heating energy saving modification project may include:
step 101: and determining a first mathematical relational expression of the energy consumption integrated value of the whole heating period and the indoor and outdoor temperature difference time number integrated value before project reconstruction.
The cumulative value of the time numbers of the indoor and outdoor temperature differences is the cumulative sum of the average values of the indoor and outdoor temperature differences in each time period, for example, the time period is an hour, the current time is 15 points, the cumulative value is calculated from 12 points, the average value of the indoor and outdoor temperature differences from 12 points to 13 points is 12 degrees, the average value of the indoor and outdoor temperature differences from 13 points to 14 points is 11 degrees, the average value of the indoor and outdoor temperature differences from 14 points to 15 points is 12 degrees, and the cumulative value of the time numbers of the indoor and outdoor temperature differences from 12 points to 15 points is 35 degrees x hour. For another example, the time period is day, and the average value of the indoor and outdoor temperature differences for 12 th month 1 is 15 degrees, the average value of the indoor and outdoor temperature differences for 12 th month 2 is 16 degrees, and the average value of the indoor and outdoor temperature differences for 12 th month 3 is 17 degrees, and the cumulative value of the time numbers of the indoor and outdoor temperature differences from 1 st to 3 rd is 15+16+17 degrees to 48 degrees day. Of course, according to the actual situation, the time period of the statistical average temperature may be set arbitrarily, and the time period of the statistical average temperature is not limited in this embodiment.
Specifically, a linear fitting method can be adopted to determine a first mathematical relation Q between the energy consumption integrated value of the whole heating period and the integrated value of the indoor and outdoor temperature difference time number before project modification1＝k1X1+b1。
In one implementation, the average outdoor temperature t per hour/day for a complete heating season before the retrofit is countedwiIndoor average temperature tni1And systemHourly/daily heat supply Qi1Obtaining the energy consumption accumulated value Q by adopting a least square normal linear fitting method1Cumulative value X of time number of indoor and outdoor temperature difference1The relationship of (1):
Q1＝k1X1+b1 (1)
in the formula:
q1-energy consumption integrated value, unit is kilojoule, kJ;
k1 — fixed coefficient;
b 1-fixed coefficient;
x1-cumulative value of time number of indoor and outdoor temperature difference, wherein the unit is centigrade degree and DEG C time unit;
qi 1-the heat supply of the system per hour/day, with unit of kilojoule, kJ;
n-hours/days of heating in heating seasons.
By using the above formulas (1), (2) and (3) and the Q1 value and X1 value corresponding to different times, the values of the fixed coefficient k1 and the fixed coefficient b1 can be calculated.
Step 102: and determining a second mathematical relational expression of the energy consumption integrated value of the whole heating period and the indoor and outdoor temperature difference time number integrated value after project modification.
Specifically, a linear fitting method can be adopted to determine a second mathematical relation between the energy consumption integrated value of the whole heating period after project modification and the integrated value of the indoor and outdoor temperature difference time number, Q2＝k2X2+b2。
In a specific implementation, after statistical transformation, the outdoor average temperature twi2 and the indoor average temperature tni2 of a complete heating season per hour/day and the heat supply capacity Qi2 of the system per hour/day are obtained, and the relation between the accumulated heat supply capacity Q2 and the accumulated value of the temperature difference hours X2 is obtained by a least square normal fitting method:
Q2＝k2X2+b2 (4)
in the formula:
q2-energy consumption integrated value, unit is kilojoule, kJ;
k2 — fixed coefficient;
b 2-fixed coefficient;
x2-cumulative value of time number of indoor and outdoor temperature difference, wherein the unit is centigrade degree and DEG C time unit;
qi 2-the heat supply to the system per hour/day in kilojoules, kJ.
By using the above formulas (4), (5) and (6) and the Q1 value and X1 value corresponding to different times, the values of the fixed coefficient k1 and the fixed coefficient b1 can be calculated.
Step 103: and determining an ideal indoor and outdoor temperature difference time number accumulated value under an ideal condition in a heating period.
In this embodiment, it may be desirable that the indoor temperature before and after the modification is assumed to be a heating standard temperature (for example, 18 ℃), and the average outdoor hourly/daily temperature is the same as the average outdoor temperature in the heating season after the modification. Therefore, the determining an ideal accumulated value of the indoor and outdoor temperature difference time numbers under ideal conditions in a heating cycle may include: and determining an ideal indoor and outdoor temperature difference time number accumulated value under an ideal condition in a heating period after project reconstruction.
Specifically, the determining an ideal accumulated value of the indoor and outdoor temperature difference time numbers under an ideal condition in a heating cycle may include: according to the formula:
calculating and determining an ideal indoor and outdoor temperature difference time number accumulated value under an ideal condition in a heating period, wherein XeThe integrated value of the time number of the ideal indoor and outdoor temperature difference under the ideal condition in a heating period is represented by the unit of centigrade x time unit, if the time unit is hour, the unit is DEG C h, if the time unit is day, the unit is DEG C day, t0 is the standard temperature in the specified heating room, the unit is centigrade, DEG C, twi2The unit is the outdoor average temperature of each sampling time period in a heating period, and the unit is centigrade and DEG C, and N is the total number of heating sampling periods of one heating period.
Step 104: and calculating and determining the energy saving amount of the heating period according to the first mathematical relational expression, the second mathematical relational expression and the ideal indoor and outdoor temperature difference time number accumulated value.
Fig. 2 is a flowchart of determining energy saving for a heating cycle according to an embodiment of the present invention, and with reference to fig. 2, determining energy saving for a heating cycle may include:
step 201: and calculating and determining a modified value of the integrated value of the energy consumption before modification of the whole heating period before the project modification according to the first mathematical relational expression and the integrated value of the time number of the ideal indoor and outdoor temperature difference.
Determining the time number cumulative value X of the ideal indoor and outdoor temperature differenceeAnd then, directly substituting the energy consumption value into the formula 1, and calculating to obtain the corrected value of the energy consumption integrated value before the whole heating period is modified before the project is modified.
Step 202: and calculating and determining the modified energy consumption integrated value correction value of the whole heating period after the project modification according to the second mathematical relational expression and the ideal indoor and outdoor temperature difference time number integrated value.
Determining the time number cumulative value X of the ideal indoor and outdoor temperature differenceeAnd then, directly substituting the energy consumption value into a formula 2, and calculating to obtain the modified energy consumption integrated value correction value of the whole heating period after project modification.
Step 203: and calculating and determining the energy saving amount of the heating cycle according to the difference value of the energy consumption accumulated value correction value before modification and the energy consumption accumulated value correction value after modification and the efficiency of a heating heat source.
And dividing the difference value of the corrected value of the integrated energy consumption value before modification and the corrected value of the integrated energy consumption value after modification by the efficiency of the heating heat source to calculate the energy saving amount of the heating cycle.
Specifically, the energy saving amount of the heating cycle is calculated according to the formula:
and calculating to determine the energy saving amount of the heating cycle. In the formula (8), Q1'＝k1Xe+b1，Q2'＝k2Xe+b2. Wherein, delta Q is the energy saving of the heating cycle, Q1' correction of cumulative value of energy consumption before modification, Q2' is a modified energy consumption accumulated value correction value, and eta is the heating heat source efficiency. Because the heating equipment consumes certain heat and has a certain heating heat source efficiency value, the difference value of the energy consumption integrated value correction value before modification and the energy consumption integrated value correction value after modification is divided by the heating heat source efficiency, and the real heating period energy saving can be calculated.
Fig. 3 is a schematic illustration of determining a modified value of the integrated energy consumption value, where 1 is a fitting curve of the integrated energy consumption value before modification and the integrated value of the indoor and outdoor temperature difference time number, 2 is the modified value of the integrated energy consumption value before modification, 3 is the fitting curve of the integrated energy consumption value after modification and the integrated value of the indoor and outdoor temperature difference time number, and 4 is the modified value of the integrated energy consumption value. With reference to fig. 3 and the above description, the corrected value of the integrated value of the energy consumption before and after the project modification can be obtained by a least square linear fitting method, because the heating energy consumption and the integrated value of the time number of the indoor and outdoor temperature difference are in a stable linear relationship, the integrated value of the temperature difference value every hour/day indoor and outdoor before and after the project modification and the integrated value of the energy consumption value every hour/day can be respectively counted, then a mathematical relational expression between the integrated value of the energy consumption value before and after the project modification and the integrated value of the time number of the indoor and outdoor temperature difference, which are obtained by linear fitting, and the integrated value of the indoor and outdoor temperature difference under the same ideal condition, under Xe, can be respectively obtained by using the relational expression as the integrated value of the energy consumption, and the two corrected values are subtracted and then the heat source efficiency η to obtain the energy saving of the heating cycle of the project.
In this embodiment, the energy saving amount determining method for the heating energy saving reconstruction project corrects heating energy consumption before and after energy saving reconstruction to the same ideal condition, and then calculates the periodic energy saving amount according to the heating energy consumption correction value before and after reconstruction, so that the problem of large error of the result of the periodic energy saving amount due to different outdoor temperatures before and after energy saving reconstruction or substandard heating quality can be avoided.
While, for purposes of simplicity of explanation, the foregoing method embodiments have been described as a series of acts or combination of acts, it will be appreciated by those skilled in the art that the present invention is not limited by the illustrated ordering of acts, as some steps may occur in other orders or concurrently with other steps in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
The method is described in detail in the embodiments disclosed above, and the method of the present invention can be implemented by various types of apparatuses, so that the present invention also discloses an apparatus, and the following detailed description will be given of specific embodiments.
Fig. 4 is a schematic structural diagram of an energy saving determination device for a heating energy saving modification project according to an embodiment of the present invention, and as shown in fig. 4, the energy saving determination device 40 for a heating energy saving modification project may include:
the first determining module 401 is configured to determine a first mathematical relation between an energy consumption integrated value of the whole heating cycle and an integrated value of indoor and outdoor temperature difference time numbers before project modification.
The first determining module 401 may specifically be configured to: determining a first mathematical relation Q of an energy consumption accumulated value of the whole heating period and an indoor and outdoor temperature difference time number accumulated value before project reconstruction by adopting a linear fitting method1＝k1X1+b1. Wherein Q1For cumulative values of energy consumption, X1Is an integrated value of time number of indoor and outdoor temperature difference, k1Is a coefficient of constant value, b1Is a fixed value coefficient.
The second determining module 402 is configured to determine a second mathematical relationship between the energy consumption integrated value of the whole heating cycle after project modification and the integrated value of the indoor and outdoor temperature difference time numbers.
The second determining module 402 is specifically configured to: determining a second mathematical relation Q of the energy consumption integrated value of the whole heating period and the indoor and outdoor temperature difference time number integrated value after project reconstruction by adopting a linear fitting method2＝k2X2+b2Wherein Q is2For cumulative values of energy consumption, X2Is an integrated value of time number of indoor and outdoor temperature difference, k2Is a coefficient of constant value, b2Is a fixed value coefficient.
The temperature difference determining module 403 is configured to determine an ideal accumulated value of indoor and outdoor temperature difference time numbers under an ideal condition in a heating cycle.
In this embodiment, it may be desirable that the indoor temperature before and after the modification is assumed to be a heating standard temperature (for example, 18 ℃), and the average outdoor hourly/daily temperature is the same as the average outdoor temperature in the heating season after the modification. Thus, the temperature difference determination module 403 may be specifically configured to: and determining an ideal indoor and outdoor temperature difference time number accumulated value under an ideal condition in a heating period after project reconstruction.
Specifically, the temperature difference determination module 403 may be according to equation (7), i.e., equation
Calculating and determining an ideal indoor and outdoor temperature difference time number accumulated value under an ideal condition in a heating period, wherein XeIs an ideal indoor and outdoor temperature difference time number accumulated value, t, under the ideal condition in a heating period0For a specified standard temperature in the room to be heated, twi2The average outdoor temperature of each sampling time period in a heating period is N, and the total number of the heating sampling time periods in the heating period is N.
And the energy saving amount determining module 404 is configured to calculate and determine the energy saving amount of the heating cycle according to the first mathematical relation, the second mathematical relation and the accumulated value of the ideal indoor and outdoor temperature difference time numbers.
Fig. 5 is a schematic structural diagram of a power saving amount determining module according to an embodiment of the disclosure, and as shown in fig. 5, the power saving amount determining module 404 may include:
and the first correction value determining module 501 is configured to calculate and determine a correction value of the integrated value of energy consumption before modification of the whole heating cycle before modification of the project according to the first mathematical relation and the integrated value of the time number of the ideal indoor and outdoor temperature difference.
Determining the time number cumulative value X of the ideal indoor and outdoor temperature differenceeAnd then, directly substituting the energy consumption value into the formula 1, and calculating to obtain the corrected value of the energy consumption integrated value before the whole heating period is modified before the project is modified.
And a second correction value determining module 502, configured to calculate and determine a correction value of the integrated value of the post-modification energy consumption value of the whole heating cycle after the project modification according to the second mathematical relation and the integrated value of the ideal indoor and outdoor temperature difference time numbers.
Determining the time number cumulative value X of the ideal indoor and outdoor temperature differenceeAnd then, directly substituting the energy consumption value into a formula 2, and calculating to obtain the modified energy consumption integrated value correction value of the whole heating period after project modification.
And the energy saving amount determining submodule 503 is configured to calculate and determine an energy saving amount of a heating cycle according to a difference between the pre-modification energy consumption integrated value correction value and the post-modification energy consumption integrated value correction value and a heating heat source efficiency.
And dividing the difference value of the corrected value of the integrated energy consumption value before modification and the corrected value of the integrated energy consumption value after modification by the efficiency of the heating heat source to calculate the energy saving amount of the heating cycle.
In this embodiment, the energy saving amount determining apparatus for the heating energy saving reconstruction project corrects heating energy consumption before and after energy saving reconstruction to the same ideal condition, and then calculates the periodic energy saving amount according to the heating energy consumption correction value before and after reconstruction, so that the problem of large error of the result of the periodic energy saving amount due to different outdoor temperatures before and after energy saving reconstruction or substandard heating quality can be avoided.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A method for determining energy saving amount of a heating energy-saving reconstruction project is characterized by comprising the following steps:
determining a first mathematical relational expression of an energy consumption accumulated value of the whole heating period and an indoor and outdoor temperature difference time number accumulated value before project modification; the accumulated value of the indoor and outdoor temperature difference time numbers is the accumulated sum of the average values of the indoor and outdoor temperature differences in the heating period;
determining a second mathematical relational expression of the energy consumption integrated value of the whole heating period and the indoor and outdoor temperature difference time number integrated value after project modification;
determining an ideal indoor and outdoor temperature difference time number accumulated value under an ideal condition in a heating period; the cumulative value of the time number of the ideal indoor and outdoor temperature difference under the ideal condition is that the indoor temperature is the cumulative sum of the average values of the indoor and outdoor temperature differences within the heating period under the heating standard temperature condition;
calculating and determining the energy saving amount of the heating period according to the first mathematical relational expression, the second mathematical relational expression and the accumulated value of the ideal indoor and outdoor temperature difference time numbers;
wherein, the first mathematical relation formula for determining the energy consumption integrated value of the whole heating period and the indoor and outdoor temperature difference time number integrated value before project reconstruction comprises the following steps:
determining a first mathematical relation Q of an energy consumption accumulated value of the whole heating period and an indoor and outdoor temperature difference time number accumulated value before project reconstruction by adopting a linear fitting method1＝k1X1+b1Wherein Q is1For cumulative values of energy consumption, X1Is an integrated value of time number of indoor and outdoor temperature difference, k1Is a coefficient of constant value, b1Is a fixed value coefficient;
the second mathematical relational expression for determining the energy consumption integrated value of the whole heating period after project transformation and the indoor and outdoor temperature difference time number integrated value comprises the following steps:
method for determining whole heating after project reconstruction by adopting linear fittingSecond mathematical relation between the periodic energy consumption integrated value and the integrated value of indoor and outdoor temperature difference time number, Q2＝k2X2+b2Wherein Q2For cumulative values of energy consumption, X2Is an integrated value of time number of indoor and outdoor temperature difference, k2Is a coefficient of constant value, b2Is a fixed value coefficient.
2. The method for determining the energy saving amount of a heating energy saving reconstruction project according to claim 1, wherein the determining the cumulative value of the ideal indoor and outdoor temperature difference time numbers under the ideal condition in one heating cycle comprises:
according to the formula
Calculating and determining an ideal indoor and outdoor temperature difference time number accumulated value under an ideal condition in a heating period, wherein XeIs an ideal indoor and outdoor temperature difference time number accumulated value, t, under the ideal condition in a heating period0For a specified standard temperature in the room to be heated, twi2The average outdoor temperature of each sampling time period in a heating period is N, and the total number of the heating sampling time periods in the heating period is N.
3. The method for determining the energy saving amount of a heating energy saving modification project according to claim 1, wherein the calculating and determining the energy saving amount of the heating cycle based on the first mathematical relation, the second mathematical relation and the accumulated value of the ideal indoor and outdoor temperature difference time numbers comprises:
calculating and determining a modified energy consumption integrated value before modification of the whole heating period before the project modification according to the first mathematical relational expression and the ideal indoor and outdoor temperature difference time number integrated value;
calculating and determining a modified energy consumption integrated value correction value of the whole heating period after project modification according to the second mathematical relational expression and the ideal indoor and outdoor temperature difference time number integrated value;
and calculating and determining the energy saving amount of the heating cycle according to the difference value of the energy consumption accumulated value correction value before modification and the energy consumption accumulated value correction value after modification and the efficiency of a heating heat source.
4. The method for determining the energy saving amount of a heating energy saving reconstruction project according to claim 1, wherein the determining the cumulative value of the ideal indoor and outdoor temperature difference time numbers under the ideal condition in one heating cycle comprises:
and determining an ideal indoor and outdoor temperature difference time number accumulated value under an ideal condition in a heating period after project reconstruction.
5. An energy-saving amount determining device for a heating energy-saving reconstruction project, comprising:
the first determination module is used for determining a first mathematical relational expression of an energy consumption accumulated value of the whole heating period and an indoor and outdoor temperature difference time number accumulated value before project reconstruction; the accumulated value of the indoor and outdoor temperature difference time numbers is the accumulated sum of the average values of the indoor and outdoor temperature differences in the heating period;
the second determination module is used for determining a second mathematical relational expression of the energy consumption accumulated value of the whole heating period and the indoor and outdoor temperature difference time number accumulated value after project modification;
the temperature difference determining module is used for determining an ideal indoor and outdoor temperature difference time number accumulated value under an ideal condition in a heating period; the cumulative value of the time number of the ideal indoor and outdoor temperature difference under the ideal condition is that the indoor temperature is the cumulative sum of the average values of the indoor and outdoor temperature differences within the heating period under the heating standard temperature condition;
the energy saving amount determining module is used for calculating and determining the energy saving amount of the heating period according to the first mathematical relational expression, the second mathematical relational expression and the ideal indoor and outdoor temperature difference time number accumulated value;
wherein the first determining module is specifically configured to: determining a first mathematical relation Q of an energy consumption accumulated value of the whole heating period and an indoor and outdoor temperature difference time number accumulated value before project reconstruction by adopting a linear fitting method1＝k1X1+b1Wherein Q is1For cumulative values of energy consumption, X1Is an integrated value of indoor and outdoor temperature difference time numbers，k1Is a coefficient of constant value, b1Is a fixed value coefficient;
the second determining module is specifically configured to: determining a second mathematical relation Q of the energy consumption integrated value of the whole heating period and the indoor and outdoor temperature difference time number integrated value after project reconstruction by adopting a linear fitting method2＝k2X2+b2Wherein Q is2For cumulative values of energy consumption, X2Is an integrated value of time number of indoor and outdoor temperature difference, k2Is a coefficient of constant value, b2Is a fixed value coefficient.
6. The energy-saving determination device for a heating energy-saving reconstruction project according to claim 5, wherein the temperature difference determination module is specifically configured to: according to the formula
Calculating and determining an ideal indoor and outdoor temperature difference time number accumulated value under an ideal condition in a heating period, wherein XeIs an ideal indoor and outdoor temperature difference time number accumulated value, t, under the ideal condition in a heating period0For a specified standard temperature in the room to be heated, twi2The average outdoor temperature of each sampling time period in a heating period is N, and the total number of the heating sampling time periods in the heating period is N.
7. The energy-saving amount determination device for a heating energy-saving retrofit project according to claim 5, wherein the energy-saving amount determination module includes:
the first correction value determining module is used for calculating and determining a correction value of the integrated value of the energy consumption before modification of the whole heating cycle before the project modification according to the first mathematical relational expression and the integrated value of the time number of the ideal indoor and outdoor temperature difference;
the second correction value determining module is used for calculating and determining the corrected value of the modified energy consumption integrated value of the whole heating cycle after project modification according to the second mathematical relation and the ideal indoor and outdoor temperature difference time number integrated value;
and the energy saving amount determining submodule is used for calculating and determining the energy saving amount of the heating period according to the difference value of the energy consumption accumulated value correction value before modification and the energy consumption accumulated value correction value after modification and the efficiency of a heating heat source.
8. The energy-saving determination device for a heating energy-saving reconstruction project according to claim 5, wherein the temperature difference determination module is specifically configured to:
and determining an ideal indoor and outdoor temperature difference time number accumulated value under an ideal condition in a heating period after project reconstruction.
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