CN110657558A - Equivalent outdoor temperature prediction control method for thermal activation building system - Google Patents
Equivalent outdoor temperature prediction control method for thermal activation building system Download PDFInfo
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- CN110657558A CN110657558A CN201910837526.8A CN201910837526A CN110657558A CN 110657558 A CN110657558 A CN 110657558A CN 201910837526 A CN201910837526 A CN 201910837526A CN 110657558 A CN110657558 A CN 110657558A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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Abstract
The invention discloses an equivalent outdoor temperature prediction control method for a thermally activated building system, which comprises the following steps of: calculating the thermodynamic characteristics, energy consumption and comfort level of the building; measuring the indoor air temperature and the average radiation temperature; measuring the heat transfer capacity of the enclosure structure, the heat dissipation of indoor personnel, the heat dissipation of lamplight, the heat dissipation of indoor equipment and the air permeation heat; predicting the equivalent outdoor temperature according to the outdoor temperature value and the solar radiation value obtained through prediction; comprehensively predicting the water supply temperature of the thermally activated building system; adjusting the predicted water supply temperature according to the heat transfer delay time of the thermal activation building system; the method of the invention predicts the equivalent outdoor temperature by comprehensively considering the thermodynamic characteristics of the building envelope, integrating the calculation of a plurality of aspects, and considers the delay of the heat transfer of the thermal activation building system, takes the delay of the heat transfer of the thermal activation building system as the factor of the prediction control of the equivalent outdoor temperature, thereby improving the accuracy of the prediction control of the equivalent outdoor temperature.
Description
Technical Field
The invention relates to the field of constructional engineering, in particular to a prediction control method for equivalent outdoor temperature of a thermal activation building system.
Background
Due to the structural characteristics of the heat-activated building system, the physical structure of the pipeline embedded in the wall body enables heat to be transferred to the wall body firstly when heat is transferred to the interior of the building, and then the wall body exchanges heat with indoor air, so that the heat transfer time of the system is delayed, and the indoor comfort cannot be well maintained;
in the existing heating/cooling system, when the influence of solar radiation on an indoor environment is considered, the influence of the solar radiation on the indoor environment is considered from the perspective of converting the solar radiation into an indoor load, and as the requirement of people on comfort is higher, the indoor temperature change caused by the solar radiation needs to be considered in the whole operation planning of a building, so that the invention provides the equivalent outdoor temperature prediction control method of the thermal activation building system to solve the defects in the prior art.
Disclosure of Invention
Aiming at the problems, the invention provides an equivalent outdoor temperature prediction control method of a thermal activation building system, which can improve the indoor comfort and improve the accuracy of the equivalent outdoor temperature prediction control by comprehensively considering the thermodynamic characteristics of an envelope structure, integrating the calculation of multiple aspects to predict the equivalent outdoor temperature, adjusting the water supply temperature according to the distribution condition of the outdoor equivalent temperature and considering the heat transfer delay of the thermal activation building system, and taking the heat transfer delay of the thermal activation building system as the factor of the equivalent outdoor temperature prediction control.
The invention provides an equivalent outdoor temperature prediction control method for a thermally activated building system, which comprises the following steps:
the method comprises the following steps: respectively calculating the thermal dynamic characteristics, energy consumption and comfort level of the building in typical days in summer and winter by utilizing a building thermal dynamic simulation program in an interval mode;
step two: measuring the indoor air temperature and the average radiation temperature;
step three: measuring the heat transfer capacity of the enclosure structure, the heat dissipation of indoor personnel, the heat dissipation of lamplight, the heat dissipation of indoor equipment and the air permeation heat, and establishing an indoor air heat balance mode;
step four: predicting an outdoor temperature value and a solar radiation value, and predicting an equivalent outdoor temperature according to the predicted outdoor temperature value and the predicted solar radiation value;
step five: according to the distribution condition of the equivalent outdoor temperature, according to the thermodynamic characteristics, energy consumption and comfort level of the building calculated in the first step, according to the indoor air temperature and the average radiation temperature measured in the second step, and according to the heat transfer quantity of the building enclosure, the heat dissipation of indoor personnel, the light heat dissipation, the heat dissipation of indoor equipment and the air permeation heat measured in the third step, the water supply temperature of the heat-activated building system is comprehensively predicted;
step six: and adjusting the predicted water supply temperature according to the heat transfer delay time of the thermal activation building system to obtain the final water supply temperature of the thermal activation building system.
The further improvement lies in that: and in the third step, the air permeation heat is determined by adopting a gap method or an air exchange frequency method, and when the air permeation heat is determined by adopting the air exchange frequency method, the indoor air exchange frequency needs to be assumed first.
The further improvement lies in that: and when measuring the heat transfer quantity of the building envelope in the third step, measuring the heat transfer quantities of an inner wall body, an outer wall body, a ceiling, a bottom plate, a window and doors and windows of the building envelope.
The further improvement lies in that: the heat transfer capacity of the inner wall body, the outer wall body, the ceiling and the bottom plate is obtained after convection heat exchange is carried out between the inner surface and the air to influence the indoor air, the surface temperature of the inner wall body, the outer wall body, the ceiling and the bottom plate needs to be obtained firstly during calculation, and the surface temperature is calculated by adopting an unsteady state method.
The further improvement lies in that: the heat transfer capacity of the window and the door window comprises convection heat exchange capacity, absorbed radiant heat and projected radiant heat.
The further improvement lies in that: and in the third step, the light heat dissipation and the indoor personnel heat dissipation are both formed by convection heat exchange and radiation heat exchange.
The further improvement lies in that: and step four, predicting an outdoor temperature value and a solar radiation value, converting solar radiation absorbed by different building envelopes into outdoor temperature change based on the heat transfer quantity of the building envelopes measured in step three when predicting the equivalent outdoor temperature according to the outdoor temperature value and the solar radiation value obtained through prediction, and superposing the outdoor temperature change obtained through conversion and the outdoor temperature value obtained through prediction to obtain the equivalent outdoor temperature.
The invention has the beneficial effects that: the method of the invention predicts the equivalent outdoor temperature by comprehensively considering the thermodynamic characteristics of the building enclosure, integrating the calculation of a plurality of aspects, adjusts the water supply temperature according to the distribution condition of the outdoor equivalent temperature, considers the delay action of the heat transfer of the heat activated building system, takes the delay of the heat transfer of the heat activated building system as the factor of the prediction control of the equivalent outdoor temperature, can improve the indoor comfort and improve the accuracy of the prediction control of the equivalent outdoor temperature.
Detailed Description
In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
An equivalent outdoor temperature prediction control method for a thermal activation building system comprises the following steps:
the method comprises the following steps: respectively calculating the thermal dynamic characteristics, energy consumption and comfort level of the building in typical days in summer and winter by utilizing a building thermal dynamic simulation program in an interval mode;
step two: measuring the indoor air temperature and the average radiation temperature;
step three: measuring heat transfer capacity of an enclosure structure, heat dissipation of indoor personnel, light heat dissipation, heat dissipation of indoor equipment and air infiltration heat, establishing an indoor air heat balance mode, determining the air infiltration heat by adopting a gap method or a ventilation frequency method, and assuming indoor ventilation frequency when determining the air infiltration heat by adopting the ventilation frequency method; when the heat transfer quantity of the building enclosure is measured, the heat transfer quantities of an inner wall body, an outer wall body, a ceiling, a bottom plate, a window and a door and window of the building enclosure are measured, the heat transfer quantities of the inner wall body, the outer wall body, the ceiling and the bottom plate are obtained after convection heat exchange is carried out between the inner surface and air to influence indoor air, the surface temperatures of the inner wall body, the outer wall body, the ceiling and the bottom plate are obtained firstly during calculation, the surface temperatures are calculated by adopting an unsteady state method, and the heat transfer quantities of the window and the door and window comprise convection heat exchange quantity, absorbed radiation heat and projected radiation heat; the light heat dissipation and the indoor personnel heat dissipation are both formed by convection heat exchange and radiation heat exchange;
step four: predicting an outdoor temperature value and a solar radiation value, predicting an equivalent outdoor temperature according to the predicted outdoor temperature value and the predicted solar radiation value, converting solar radiation absorbed by different building envelopes into outdoor temperature change on the basis of the heat transfer quantity of the building envelopes measured in the third step, and superposing the outdoor temperature change obtained by conversion and the predicted outdoor temperature value to obtain the equivalent outdoor temperature;
step five: according to the distribution condition of the equivalent outdoor temperature, according to the thermodynamic characteristics, energy consumption and comfort level of the building calculated in the first step, according to the indoor air temperature and the average radiation temperature measured in the second step, and according to the heat transfer quantity of the building enclosure, the heat dissipation of indoor personnel, the light heat dissipation, the heat dissipation of indoor equipment and the air permeation heat measured in the third step, the water supply temperature of the heat-activated building system is comprehensively predicted;
step six: and adjusting the predicted water supply temperature according to the heat transfer delay time of the thermal activation building system to obtain the final water supply temperature of the thermal activation building system.
The method of the invention predicts the equivalent outdoor temperature by comprehensively considering the thermodynamic characteristics of the building enclosure, integrating the calculation of a plurality of aspects, adjusts the water supply temperature according to the distribution condition of the outdoor equivalent temperature, considers the delay action of the heat transfer of the heat activated building system, takes the delay of the heat transfer of the heat activated building system as the factor of the prediction control of the equivalent outdoor temperature, can improve the indoor comfort and improve the accuracy of the prediction control of the equivalent outdoor temperature.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A method for predicting and controlling the equivalent outdoor temperature of a heat activated building system is characterized by comprising the following steps:
the method comprises the following steps: respectively calculating the thermal dynamic characteristics, energy consumption and comfort level of the building in typical days in summer and winter by utilizing a building thermal dynamic simulation program in an interval mode;
step two: measuring the indoor air temperature and the average radiation temperature;
step three: measuring the heat transfer capacity of the enclosure structure, the heat dissipation of indoor personnel, the heat dissipation of lamplight, the heat dissipation of indoor equipment and the air permeation heat, and establishing an indoor air heat balance mode;
step four: predicting an outdoor temperature value and a solar radiation value, and predicting an equivalent outdoor temperature according to the predicted outdoor temperature value and the predicted solar radiation value;
step five: according to the distribution condition of the equivalent outdoor temperature, according to the thermodynamic characteristics, energy consumption and comfort level of the building calculated in the first step, according to the indoor air temperature and the average radiation temperature measured in the second step, and according to the heat transfer quantity of the building enclosure, the heat dissipation of indoor personnel, the light heat dissipation, the heat dissipation of indoor equipment and the air permeation heat measured in the third step, the water supply temperature of the heat-activated building system is comprehensively predicted;
step six: and adjusting the predicted water supply temperature according to the heat transfer delay time of the thermal activation building system to obtain the final water supply temperature of the thermal activation building system.
2. The method for predictive control of equivalent outdoor temperature of a thermally activated building system as claimed in claim 1, wherein: and in the third step, the air permeation heat is determined by adopting a gap method or an air exchange frequency method, and when the air permeation heat is determined by adopting the air exchange frequency method, the indoor air exchange frequency needs to be assumed first.
3. The method for predictive control of equivalent outdoor temperature of a thermally activated building system as claimed in claim 1, wherein: and when measuring the heat transfer quantity of the building envelope in the third step, measuring the heat transfer quantities of an inner wall body, an outer wall body, a ceiling, a bottom plate, a window and doors and windows of the building envelope.
4. A thermally activated building system equivalent outdoor temperature predictive control method as claimed in claim 3, wherein: the heat transfer capacity of the inner wall body, the outer wall body, the ceiling and the bottom plate is obtained after convection heat exchange is carried out between the inner surface and the air to influence the indoor air, the surface temperature of the inner wall body, the outer wall body, the ceiling and the bottom plate needs to be obtained firstly during calculation, and the surface temperature is calculated by adopting an unsteady state method.
5. A thermally activated building system equivalent outdoor temperature predictive control method as claimed in claim 3, wherein: the heat transfer capacity of the window and the door window comprises convection heat exchange capacity, absorbed radiant heat and projected radiant heat.
6. The method for predictive control of equivalent outdoor temperature of a thermally activated building system as claimed in claim 1, wherein: and in the third step, the light heat dissipation and the indoor personnel heat dissipation are both formed by convection heat exchange and radiation heat exchange.
7. The method for predictive control of equivalent outdoor temperature of a thermally activated building system as claimed in claim 1, wherein: and step four, predicting an outdoor temperature value and a solar radiation value, converting solar radiation absorbed by different building envelopes into outdoor temperature change based on the heat transfer quantity of the building envelopes measured in step three when predicting the equivalent outdoor temperature according to the outdoor temperature value and the solar radiation value obtained through prediction, and superposing the outdoor temperature change obtained through conversion and the outdoor temperature value obtained through prediction to obtain the equivalent outdoor temperature.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111832111A (en) * | 2020-07-20 | 2020-10-27 | 天津大学 | Thermal characteristic prediction method and influence factor identification method for thermal activation building system |
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| JP5951142B1 (en) * | 2015-04-01 | 2016-07-13 | 三菱電機株式会社 | Air conditioning system controller |
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| JP2001325555A (en) * | 2000-05-18 | 2001-11-22 | Shinryo Corp | Method for predicting temperature distribution by thermal environment analysis |
| CN102865623A (en) * | 2012-09-28 | 2013-01-09 | 季涛 | Centralized heating public building heat supply energy-saving control method |
| JP5951142B1 (en) * | 2015-04-01 | 2016-07-13 | 三菱電機株式会社 | Air conditioning system controller |
| CN104896660A (en) * | 2015-05-20 | 2015-09-09 | 中南大学 | Method for optimized setting of air conditioner temperature in office building |
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| CN111832111B (en) * | 2020-07-20 | 2022-04-22 | 天津大学 | Thermal characteristic prediction method and influence factor identification method for thermal activation building system |
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Address after: Room 502, 5 / F, building, Nanqiao Industrial Development Zone, Chuzhou City, Anhui Province Applicant after: Jinpeng assembly Construction Co., Ltd Address before: Room 502, 5 / F, building, Nanqiao Industrial Development Zone, Chuzhou City, Anhui Province Applicant before: Jinpeng Construction Industry Co., Ltd |
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