CN115509276A - Method for calculating heating or cooling power of equipment based on spatial gridding and monitoring device - Google Patents
Method for calculating heating or cooling power of equipment based on spatial gridding and monitoring device Download PDFInfo
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- CN115509276A CN115509276A CN202211233705.9A CN202211233705A CN115509276A CN 115509276 A CN115509276 A CN 115509276A CN 202211233705 A CN202211233705 A CN 202211233705A CN 115509276 A CN115509276 A CN 115509276A
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- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
Abstract
The invention discloses a method for calculating the heating or cooling power of equipment based on spatial gridding and a monitoring device, wherein the calculating method comprises the following steps: acquiring the range of a monitoring area through artificial measurement, and forming a plurality of unit space grid areas through artificial division of the range; at least one temperature acquisition unit is respectively configured corresponding to each unit space grid area to acquire temperature change in each unit space grid area; each temperature acquisition unit acquires the temperature difference value in a first period every other artificially set first period; calculating the heat absorbed or dissipated by each unit space grid region by the product of the obtained temperature difference and the specific heat capacity of the air, the air density and the volume of the unit space grid region; calculating the heating or cooling power of the equipment according to the sum of the absorbed or dissipated heat of each unit space grid region; the calculating method and the monitoring device provided by the invention solve the problem of poor energy-saving effect caused by inaccurate monitoring data and calculating results in the prior art.
Description
Technical Field
The invention relates to the field of cabinet manufacturing, in particular to a method for calculating heating or refrigerating power of equipment based on spatial gridding and a monitoring device.
Background
Nowadays, the idea of "energy saving" is very popular and is embodied from various aspects of life, but some aspects are still insufficient because the power consumption or the usage state cannot be monitored or calculated more accurately, which in turn leads to energy consumption, for example: (1) In a large mall, a central air conditioner is adopted for refrigerating, various energy waste situations occur under different situations due to large market place, multiple areas and constant refrigerating power of the central air conditioner, for example, in the morning or at night, when customers are few, and various devices generating heat are in shops, under the same temperature, customers or workers feel that the ambient temperature is too low, and in the noon, holidays, more customers or areas generating more heat (dining areas), the mall is too hot at the same temperature, so that the mall is cooled and controlled, some areas generating less customers or less heat are too cold, further discomfort is generated, the central air conditioner in the mall is difficult to monitor or detect the temperature change of the corresponding area, the refrigeration or heating is always performed at the maximum power, the energy can not be saved, and the power consumption is large; (2) A machine room, for example, a machine room with 10 square meters, is normally equipped with a 1.5-piece air conditioner for cooling or heating to maintain the ambient temperature of the machine room, so as to dissipate heat generated by heat generating devices (such as computers, control cabinets and the like) in the machine room; however, in the space with the same square number, the effect brought by the different number of the internal heating devices is different, the heat emitted by 3 heating devices installed in 10 square meters is completely different from the heat emitted by 10 heating devices, and the current method only adjusts the air conditioner to reduce the temperature by the maximum power adjustment, cannot adjust the temperature after calculation, leads to the great increase of the power consumption and does not have the energy-saving effect;
in summary, a method capable of accurately calculating power is urgently needed as a basis for configuring the cooling capacity or the heating capacity of the cooling or heating equipment to reduce power consumption.
Disclosure of Invention
The invention aims to overcome the defects or problems in the background art, and provides a method and a device for calculating the heating or cooling power of equipment based on spatial gridding, which solve the problem of poor energy-saving effect caused by inaccurate monitoring data and calculation results in the prior art;
in order to achieve the purpose, the invention adopts the following technical scheme:
a method for calculating heating or cooling power of equipment based on spatial gridding comprises the following steps:
acquiring the range of a monitoring area through artificial measurement, and forming a plurality of unit space grid areas through artificial division of the range;
at least one temperature acquisition unit is respectively configured corresponding to each unit space grid area so as to acquire temperature change in each unit space grid area;
each temperature acquisition unit acquires, stores and compares temperature values every other first period set manually to acquire a temperature difference value in the first period; calculating the heat absorbed or dissipated by each unit space grid region according to the product of the obtained temperature difference and the specific heat capacity of the air, the air density and the volume of the unit space grid region;
calculating the heating or cooling power of the equipment through the sum of the heat absorbed or dissipated by each unit space grid region, namely:
wherein the content of the first and second substances,
p is power, C Air (a) Is the specific heat capacity of air, rho Air (a) Is air density, V i The volume of each unit space grid region, Δ T is a first period, and Δ ti is a temperature difference value.
Further, in a first period set manually, each temperature acquisition unit respectively acquires a difference between a temperature value of the last time point and a temperature value of the initial time point, that is, a temperature difference value is:
Δ t = t end-t initial
Wherein, the t end is the temperature value collected at the time point of the first period end, and the t initial is the temperature value collected at the time point of the first period initial.
Further, the calculation formula of the heat absorbed or dissipated by any unit space grid region is as follows:
Q＝C air (a) ·ρ Air (a) ·V Air (a) ·Δt
Wherein: q is the absorbed or dissipated heat, C Air (W) Is the specific heat capacity of air, rho Air (a) Is the density of air, V Air (a) The volume Δ t for each unit space grid region is the temperature difference value.
Further, the calculation formula of the total absorbed or dissipated heat in the monitoring area range is as follows:
wherein Q is General (1) The total heat absorbed or dissipated for the area to be monitored.
Further, the power of the device heating or cooling during the first period is calculated by monitoring the total absorbed or dissipated heat of the area, i.e.:
wherein, P is the heating or cooling power of the equipment.
A monitoring device based on heating or refrigerating power of space gridding equipment comprises a plurality of temperature acquisition units, a data acquisition module, a data storage module, a data processing module and a power data output module, wherein the data processing module acquires power data through the calculation method; the temperature acquisition modules are used for acquiring the temperature in the corresponding unit space grid area, sending the temperature to the data storage module for storage through the data acquisition modules, calculating the absorbed or dissipated heat through the data processing module, converting the heat into corresponding power, and outputting the power to the execution device of the equipment through the power data output module.
As can be seen from the above description of the present invention, the present invention has the following advantages over the prior art:
the invention provides a method and a device for calculating heating or cooling power of equipment based on spatial gridding, which solve the problem of poor energy-saving effect caused by inaccurate monitoring data and calculation results in the prior art; according to the calculation method, a monitoring area is divided in a spatial gridding mode to form a plurality of unit small spaces, a temperature acquisition unit is arranged in each unit small space, the temperature of each unit small space is accurately acquired, a temperature difference value is acquired in a first period set by people, if the temperature difference value is a positive number, temperature rise (absorbed heat) is performed, and if the temperature difference value is a negative number, temperature fall (dissipated heat) is performed, the sum of the heat of each unit small space is acquired in a summing mode, the success rate is finally converted, a temperature fall or rise instruction is executed for equipment, and the equipment can be driven to operate or work with corresponding power according to the acquired power value without operating at maximum power; for example, the following steps are carried out: for example, kilovolt-ampere transformers are arranged in a cell, and are arranged in rooms, cabinets or machine rooms, and the transformers generate different heat in working due to different electricity utilization states of residents, such as the residents are at home at night, the electricity consumption is large, the load rate of the transformers is as high as 80-95%, and the generated heat is large; if the resident works outside in the daytime of a working day, the household electricity consumption is low, the load factor of the transformer is low and only reaches about 20%, the generated heat is small, the heating situation cannot be accurately monitored even if the existing mode can not calculate, generally, the transformer in a cabinet or an indoor is cooled or heated at the maximum constant power, and the corresponding power cannot be adjusted according to the actual heating or cooling capacity, so that the transformer is excessively or excessively configured, and the energy-saving effect cannot be achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of a monitoring device according to the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are presently preferred embodiments of the invention and are not to be taken as an exclusion of other embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the claims, the specification and the drawings of the present invention, unless otherwise specifically limited, the terms "first", "second" or "third", etc. are used for distinguishing between different objects and not for describing a particular order.
In the claims, the description and the drawings of the present invention, unless otherwise expressly limited, directional terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise" etc. are used for indicating positional or orientational relationships based on the positional and orientational relationships shown in the drawings and are used for convenience in describing the present invention and for simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention.
In the claims, the specification and the drawings of the present invention, unless otherwise specifically limited, the terms "fixedly connected" or "fixedly connected" should be interpreted broadly, that is, any connection mode in which there is no displacement relationship or relative rotation relationship between the two, that is, non-detachably fixed connection, integrally connected, and fixedly connected by other devices or elements.
In the claims, specification and drawings of the present invention, the terms "including", "having" and variations thereof, if used, are intended to be inclusive.
Referring to fig. 1, the monitoring device for heating or cooling power based on spatial gridding equipment according to the present invention includes a plurality of temperature acquisition units 1, a data acquisition module 2, a data storage module 3, a data processing module 4, and a power data output module 5;
the temperature acquisition units 1 are used for acquiring the temperature of the spatial grid area of the units and transmitting the temperature to the data storage module 3 for storage through the data acquisition module 2;
the data processing module 4 processes and calculates the acquired temperature values and converts the temperature values into power data;
the power data output module 5 outputs the power data to an execution device 6 of the equipment, and the air conditioner is driven to refrigerate or heat with corresponding power according to the calculated power by taking the air conditioner as the execution device 6;
it should be noted that the data processing module 4 outputs power data by a calculation method for the heating or cooling power of the device based on spatial gridding, and the specific calculation method includes:
(1) Acquiring the range of a monitoring area A through artificial measurement, and forming a plurality of unit space grid areas A1 through artificial division of the range;
(2) At least one temperature acquisition unit 1 (exemplified by a temperature sensor in the invention) is respectively configured corresponding to each unit space grid area A1, so as to acquire the temperature change in each unit space grid area A1; the method specifically comprises the following steps:
each temperature acquisition unit 1 acquires, stores and compares temperature values at intervals of a first period delta T set manually to acquire a temperature difference value of the delta T at the first period; namely: in the artificially set first period Δ T, each temperature acquisition unit 1 respectively acquires the difference between the temperature value of the last time point and the temperature value of the initial time point, that is, the temperature difference value is:
Δ t = t end-t initial
The temperature value collected at the time point of the end of the first period delta T is at the end of T, and the temperature value collected at the time point of the initial delta T is at the beginning of T.
Each temperature acquisition unit 1 obtains Δ t1, Δ t2, Δ t3, Δ t4... Δ ti;
it should be noted that if Δ t is a positive value, the reaction temperature is increasing, i.e., increasing temperature, and if Δ t1 is a negative value, the reaction temperature is decreasing, i.e., decreasing temperature;
(3) Then calculating the heat absorbed or dissipated by each unit space grid area A1, namely calculating the temperature difference delta t and the specific heat capacity C of air Air (a) Air density ρ Air (a) Volume V of grid region of unit space Air (a) The heat absorbed or dissipated by each unit space grid area A1 is calculated by the product of the following formula:
Q＝C air (a) ·ρ Air (a) ·V Air (a) ·Δt
Wherein: q is the absorbed or dissipated heat, C Air (a) Is the specific heat capacity of air, C Air (a) Is the density of air, V Air (W) The volume Δ t of the mesh area A1 for each unit space is a temperature difference value.
In this way, the heat Q1, Q2, Q3... Qn of each unit grid area can be obtained;
then deducing that the heat absorbed (dissipated) by the air in the monitoring area A in the artificially set first period delta T time period is Q General assembly ，
Q General assembly ＝Q1+Q2+Q3+…+Qn
Namely: q General (1) ＝C Air (a) ·ρ Air (a) ·V 1 ·Δt1+C Air (a) ·ρ Air (a) ·V 2 ·Δt2+……C Air (a) ·ρ Air (W) ·V n ·Δtn
Note: v1, V2, V3... Vn is the volume of each unit space grid area A1, and Δ T1, Δ T2, Δ t3... Δ tn is the temperature difference value of each unit space grid area A1 in a Δ T time period;
(4) Converting the heating (cooling) power required by the equipment in the artificially set first period delta T time period: namely, the power of heating or cooling of the equipment in the first period delta T is calculated by monitoring the total absorbed or dissipated heat in the range of the area A, and the calculation formula is as follows:
wherein, P is the heating or refrigerating power of the equipment;
combined with the total heat quantity Q of the monitoring area General assembly The formula (A) is derived to calculate the heating or cooling power of the equipment by calculating the sum of the heat absorbed or dissipated by each unit space grid area A1, namely:
wherein the content of the first and second substances,
p is power, C Air (a) Is the specific heat capacity of air, rho Air (W) Is the density of air, V i Δ T is the volume of each unit space grid region A1, and Δ T and Δ ti are temperature difference values in the first period Δ T and Δ ti.
The temperature value is acquired by acquiring the temperature acquisition unit 1, the heating power or the refrigerating power can be acquired by combining the artificially set first period delta T (the first period delta T is set according to actual requirements, such as 5 seconds, 5 minutes and the like) and the formula, and then the heating power or the refrigerating power is transmitted to the execution device 6 (air conditioner) through the power data output module 5, and the air conditioner can allocate corresponding power (wattage) to cool or heat according to the monitored acquired power, so that the waste of energy caused by continuous operation with the maximum power is avoided.
The invention provides a method and a device for calculating heating or cooling power of equipment based on spatial gridding, which solve the problem of poor energy-saving effect caused by inaccurate monitoring data and calculation results in the prior art; the calculation method of the invention forms a plurality of unit small spaces by carrying out space gridding division on a monitoring area, and arranges a temperature acquisition unit in each unit small space to more accurately acquire the temperature of each unit small space, and acquires a temperature difference value in a first period set by people, if the temperature difference value is a positive number, the temperature is increased (absorbed heat), otherwise, the temperature is decreased (dissipated heat), the heat sum of each unit small space is acquired in a summing mode, the success rate is finally converted, a temperature decrease or increase instruction is executed to equipment, and the equipment can be driven to operate or work with corresponding power according to the acquired power value without operating with maximum power.
The description of the above specification and examples is intended to be illustrative of the scope of the present invention and is not intended to be limiting.
Claims (6)
1. A method for calculating heating or cooling power of equipment based on spatial gridding is characterized by comprising the following steps:
acquiring the range of a monitoring area through artificial measurement, and forming a plurality of unit space grid areas through artificial division of the range;
at least one temperature acquisition unit is respectively configured corresponding to each unit space grid region to acquire temperature change in each unit space grid region;
each temperature acquisition unit acquires, stores and compares temperature values every other first period set manually to acquire a temperature difference value in the first period; calculating the heat absorbed or dissipated by each unit space grid region according to the product of the obtained temperature difference and the specific heat capacity of the air, the air density and the volume of the unit space grid region;
calculating the heating or cooling power of the equipment through the sum of the heat absorbed or dissipated by each unit space grid region, namely:
wherein the content of the first and second substances,
p is power, C Air (a) Is the specific heat capacity of air, rho Air (a) Is air density, V i The volume of each unit space grid region, Δ T is a first period, and Δ ti is a temperature difference value.
2. The method for calculating the heating or cooling power of the equipment based on the spatial gridding as claimed in claim 1, wherein the method comprises the following steps: in a first period set manually, each temperature acquisition unit respectively acquires the difference between the temperature value of the last time point and the temperature value of the initial time point, namely the temperature difference value:
Δ t = t end-t initial
Wherein, the t end is the temperature value collected at the time point of the first period end, and the t initial is the temperature value collected at the time point of the first period initial.
3. The method for calculating the heating or cooling power of the equipment based on the spatial gridding as claimed in claim 2, wherein: the calculation formula of the heat absorbed or dissipated by any unit space grid region is as follows:
Q＝C air (a) ·ρ Air (a) ·V Air (a) ·Δt
Wherein: q is the absorbed or dissipated heat, C Air (a) Specific heat capacity of air, ρ Air (W) Is the density of air, V Air (a) The volume Δ t for each unit space grid region is the temperature difference value.
4. The method for calculating the heating or cooling power of the equipment based on the spatial gridding as claimed in claim 3, wherein: the calculation formula of the total absorbed or dissipated heat in the monitoring area range is as follows:
wherein Q is General (1) The total heat absorbed or dissipated for the area to be monitored.
5. The method for calculating the heating or cooling power of the equipment based on the spatial gridding as claimed in claim 4, wherein the method comprises the following steps: calculating the power of the equipment for heating or cooling in the first period by monitoring the total absorbed or dissipated heat of the area range, namely:
wherein, P is the heating or cooling power of the equipment.
6. The utility model provides a monitoring devices based on space grid ization equipment generates heat or refrigerating power which characterized in that: the monitoring device comprises a plurality of temperature acquisition units, a data acquisition module, a data storage module, a data processing module and a power data output module, wherein the data processing module acquires power data by the calculation method of claims 1 to 5; the temperature acquisition modules are used for acquiring the temperature in the corresponding unit space grid area, sending the temperature to the data storage module for storage through the data acquisition modules, calculating the absorbed or dissipated heat through the data processing module, converting the heat into corresponding power, and outputting the power to the execution device of the equipment through the power data output module.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116774748A (en) * | 2023-08-22 | 2023-09-19 | 山东创脂生物科技有限公司 | Temperature control method and system in edible animal fat refining process |
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