CN109297156A - A kind of air conditioner system control method - Google Patents
A kind of air conditioner system control method Download PDFInfo
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- CN109297156A CN109297156A CN201811493328.6A CN201811493328A CN109297156A CN 109297156 A CN109297156 A CN 109297156A CN 201811493328 A CN201811493328 A CN 201811493328A CN 109297156 A CN109297156 A CN 109297156A
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- enthalpy
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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
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of air conditioner system control methods, are related to air conditioner technical field.This method participates in the calculating and regulation of compressor refrigerating capacity using fresh air enthalpy and dew point enthalpy, since enthalpy participates in the calculating of compressor refrigerating capacity, the insulation amount in air is fully considered, it compensates for PID adjusting and is in the shortcoming of certain critical states in compressor input amount, play the role of further improving to the stability of air-conditioning system, solve the problems, such as air-conditioner set in current China coast launching site because compressor input amount is excessive or too early caused by frosting, achieved the purpose that air conditioner system energy saving again while guaranteeing air-conditioning system precision and stability.
Description
Technical field
The present invention relates to air conditioner technical field more particularly to a kind of air conditioner system control methods.
Background technique
Currently, the control of air-conditioning system, generally all temperature or dew point come by way of controlling compressor refrigerating capacity come real
It is existing, as shown in Figure 1, this control mode, when calculating compressor refrigerating capacity, due to the considerations of lacking insulation amount in air, institute
With often calculated refrigerating capacity is bigger than normal or makes the premature investment of compressor, although can satisfy the control of most of air-conditioning systems
System requires, but in high temperature and humidity, and under the big environment of day and night temperature, is easy to keep compressor input amount too early or excessive, in turn
Unit frosting is caused even to freeze, to influence the normal operation of air-conditioning system.
Summary of the invention
The purpose of the present invention is to provide a kind of air conditioner system control methods, to solve existing in the prior art aforementioned
Problem.
To achieve the goals above, The technical solution adopted by the invention is as follows:
A kind of air conditioner system control method, includes the following steps:
S1, obtain air-conditioning system new air temperature and new wind moisture；
S2, according to the calculation method of enthalpy, calculates separately to obtain fresh air enthalpy using the new air temperature and new wind moisture
With dew point enthalpy；
Using the fresh air enthalpy and dew point enthalpy according to the following formula, compressor refrigerating capacity is calculated in S3:
S4 controls air-conditioning system according to compressor refrigerating capacity.
Preferably, in S2, the calculation method of the enthalpy includes the following steps:
S201 obtains dry-bulb temperature, relative humidity and atmospheric pressure；
S202 calculates saturation moisture using dry-bulb temperature；
S203 utilizes saturation moisture and relative humidity calculation steam partial pressure；
S204 calculates water capacity using steam partial pressure and atmospheric pressure；
S205 calculates enthalpy using water capacity and dry-bulb temperature.
Preferably, in S202, the saturation moisture is calculated according to following formula:
INT (1000* (133.322*POWER (10, (156+8.12* dry-bulb temperature)/(236+ dry-bulb temperature)))+0.5)/
1000。
Preferably, in S203, the steam partial pressure is calculated according to following formula: INT (1000* relative humidity/
100* saturation moisture+0.5)/1000.
Preferably, in S204, the water capacity is calculated according to following formula: 622* steam partial pressure/(atmospheric pressure
Power-steam partial pressure).
Preferably, in S205, the enthalpy is calculated according to following formula: 1.005* dry-bulb temperature+0.001* is containing wet
It measures * (2500+1.84* dry-bulb temperature).
Preferably, S2 is carried out as follows implementation: the calculation method of enthalpy being encapsulated as a functional block, is being used
In the process, the functional block is called in the calculating of fresh air enthalpy and the calculating of dew point enthalpy respectively, respectively obtains fresh air enthalpy and dew point
Enthalpy.
Preferably, S3 is carried out as follows implementation: packaged enthalpy calculation block is called, by new air temperature
Functional block is brought into new wind moisture calculates fresh air enthalpy；The enthalpy calculation block encapsulated is called, brings dew point value into meter
It calculates dew point enthalpy and then according to the following formula, compressor refrigerating capacity is calculated:
The beneficial effects of the present invention are: a kind of air conditioner system control method provided by the invention, utilizes fresh air enthalpy and dew
Point enthalpy participates in the calculating and regulation of compressor refrigerating capacity, since enthalpy participates in the calculating of compressor refrigerating capacity, fully considers
Insulation amount in air compensates for PID adjusting in compressor input amount and is in the shortcoming of certain critical states, to air-conditioning system
The stability of system plays the role of further improving, and solves the air-conditioner set in current China coast launching site because of compressor
Frosting problem caused by input amount is excessive or too early, has reached air-conditioning system while guaranteeing air-conditioning system precision and stability again
It unites energy-efficient purpose.
Detailed description of the invention
Fig. 1 is the calculating process flow diagram of compressor refrigerating capacity in the prior art；
Fig. 2 is the calculating process flow diagram of compressor refrigerating capacity in the present invention；
Fig. 3 is enthalpy calculating process flow diagram in the present invention；
Fig. 4 is the process flow schematic diagram for calculating compressor refrigerating capacity in the present invention using enthalpy functional block；
Fig. 5 is enthalpy calculation block structural schematic diagram in the present invention；
Fig. 6 is the schematic diagram for calculating fresh air enthalpy in the present invention using enthalpy calculation block；
Fig. 7 is the schematic diagram for calculating dew point enthalpy in the present invention using enthalpy calculation block.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing, to the present invention into
Row is further described.It should be appreciated that the specific embodiments described herein are only used to explain the present invention, it is not used to
Limit the present invention.
Commonly called enthalpy refers to the total amount of heat contained in air, usually on the basis of the unit mass of dry air, claims
Make specific enthalpy, enthalpy is referred to as in engineering, refers to the summation of the enthalpy of a kg dry air and the enthalpy of vapor corresponding with it.
It in engineering, can be according to the variation of the air of certain mass specific enthalpy during processing, to determine that air is
It has arrived heat and has still lost heat.The specific enthalpy of air, which increases, indicates to have obtained heat in air, and the specific enthalpy of air reduces then table
Show and loses heat in air.
As shown in Fig. 2, including the following steps: the embodiment of the invention provides a kind of air conditioner system control method
S1, obtain air-conditioning system new air temperature and new wind moisture；
S2, according to the calculation method of enthalpy, calculates separately to obtain fresh air enthalpy using the new air temperature and new wind moisture
With dew point enthalpy；
Using the fresh air enthalpy and dew point enthalpy according to the following formula, compressor refrigerating capacity is calculated in S3:
S4 controls air-conditioning system according to compressor refrigerating capacity.
In the control method of above-mentioned air-conditioning system, the calculating of compressor refrigerating capacity is participated in using fresh air enthalpy and dew point enthalpy
And regulation, enthalpy participate in the calculating of compressor refrigerating capacity, have fully considered the insulation amount in air, compensate for PID adjusting and are pressing
Contracting machine input amount is in the shortcoming of certain critical states, plays further improve to the stability of air-conditioning system and makees
With.Solve air-conditioner set in current China coast launching site because compressor input amount is excessive or too early caused by frosting ask
Topic, has achieved the purpose that air conditioner system energy saving while guaranteeing air-conditioning system precision and stability again.
As shown in figure 3, in one embodiment, in S2, the calculation method of the enthalpy includes the following steps:
S201 obtains dry-bulb temperature, relative humidity and atmospheric pressure；
S202 calculates saturation moisture using dry-bulb temperature；
S203 utilizes saturation moisture and relative humidity calculation steam partial pressure；
S204 calculates water capacity using steam partial pressure and atmospheric pressure；
S205 calculates enthalpy using water capacity and dry-bulb temperature.
Wherein, in S202, the saturation moisture is calculated according to following formula:
INT (1000* (133.322*POWER (10, (156+8.12* dry-bulb temperature)/(236+ dry-bulb temperature)))+0.5)/
1000。
In above-mentioned formula, INT is the bracket function in database in common mathematical function, and the function of POWER function is to return to number
The calculated result of word power.
In S203, the steam partial pressure is calculated according to following formula: (1000* relative humidity/100* is full by INT
With moisture+0.5)/1000.
In above-mentioned formula, INT is the bracket function in database in common mathematical function.
In S204, the water capacity is calculated according to following formula: 622* steam partial pressure/(atmospheric pressure-water steams
Gas partial pressure).
In S205, the enthalpy is calculated according to following formula: 1.005* dry-bulb temperature+0.001* water capacity * (2500
+ 1.84* dry-bulb temperature).
As shown in figure 4, S2 can be carried out as follows implementation in a preferred embodiment of the present invention: by enthalpy
Calculation method be encapsulated as a functional block, in use, the calculating of fresh air enthalpy and the calculating of dew point enthalpy are adjusted respectively
With the functional block, fresh air enthalpy and dew point enthalpy are respectively obtained.
According to the above method, enthalpy calculating process is packaged into enthalpy functional block as shown in Figure 5.
It wherein, can be as shown in Figure 6 using the process that enthalpy functional block calculates fresh air enthalpy.
It can be as shown in Figure 7 using the process that enthalpy functional block calculates dew point enthalpy.
S3 can be carried out as follows implementation: by calling packaged enthalpy calculation block to calculate separately out newly
Then according to the following formula, compressor refrigerating capacity is calculated in wind enthalpy and dew point enthalpy:
By using above-mentioned technical proposal disclosed by the invention, following beneficial effect has been obtained: provided by the invention one
Kind air conditioner system control method participates in the calculating and regulation of compressor refrigerating capacity using fresh air enthalpy and dew point enthalpy, due to enthalpy
Value participates in the calculating of compressor refrigerating capacity, has fully considered the insulation amount in air, compensates for PID and adjusts in compressor input amount
Shortcoming in certain critical states plays the role of further improving, solves mesh to the stability of air-conditioning system
Air-conditioner set in preceding China coast launching site because compressor input amount is excessive or too early caused by frosting problem, guaranteeing air-conditioning
Air conditioner system energy saving is achieved the purpose that again while system accuracy and stability.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
Depending on protection scope of the present invention.
Claims (8)
1. a kind of air conditioner system control method, which comprises the steps of:
S1, obtain air-conditioning system new air temperature and new wind moisture；
S2, according to the calculation method of enthalpy, calculates separately to obtain fresh air enthalpy and dew using the new air temperature and new wind moisture
Point enthalpy；
Using the fresh air enthalpy and dew point enthalpy according to the following formula, compressor refrigerating capacity is calculated in S3:
S4 controls air-conditioning system according to compressor refrigerating capacity.
2. air conditioner system control method according to claim 1, which is characterized in that in S2, the calculation method packet of the enthalpy
Include following steps:
S201 obtains dry-bulb temperature, relative humidity and atmospheric pressure；
S202 calculates saturation moisture using dry-bulb temperature；
S203 utilizes saturation moisture and relative humidity calculation steam partial pressure；
S204 calculates water capacity using steam partial pressure and atmospheric pressure；
S205 calculates enthalpy using water capacity and dry-bulb temperature.
3. air conditioner system control method according to claim 2, which is characterized in that in S202, the saturation moisture is according to such as
Lower formula is calculated:
INT (1000* (133.322*POWER (10, (156+8.12* dry-bulb temperature)/(236+ dry-bulb temperature)))+0.5)/
1000。
4. air conditioner system control method according to claim 3, which is characterized in that in S203, the steam partial pressure is pressed
It is calculated according to following formula: INT (1000* relative humidity/100* saturation moisture+0.5)/1000.
5. air conditioner system control method according to claim 4, which is characterized in that in S204, the water capacity is according to as follows
Formula is calculated: 622* steam partial pressure/(atmospheric pressure-steam partial pressure).
6. air conditioner system control method according to claim 5, which is characterized in that in S205, the enthalpy is according to following public affairs
Formula is calculated: 1.005* dry-bulb temperature+0.001* water capacity * (2500+1.84* dry-bulb temperature).
7. air conditioner system control method according to claim 1, which is characterized in that S2 is carried out as follows implementation: will
The calculation method of enthalpy is encapsulated as a functional block, in use, the calculating of fresh air enthalpy and the calculating point of dew point enthalpy
The functional block is not called, respectively obtains fresh air enthalpy and dew point enthalpy.
8. air conditioner system control method according to claim 7, which is characterized in that S3 is carried out as follows implementation: adjusting
With packaged enthalpy calculation block, brings new air temperature and new wind moisture into functional block and calculate fresh air enthalpy；It calls
The enthalpy calculation block encapsulated brings dew point value into functional block and calculates dew point enthalpy, then, according to the following formula, meter
Calculation obtains compressor refrigerating capacity:
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111895585A (en) * | 2020-08-14 | 2020-11-06 | 珠海格力电器股份有限公司 | Air conditioning system control method |
| CN111895587A (en) * | 2020-08-14 | 2020-11-06 | 珠海格力电器股份有限公司 | Air conditioning system control method |
| CN113639980A (en) * | 2021-08-06 | 2021-11-12 | 华北电力科学研究院有限责任公司 | Method and device for evaluating water lifting performance of flue gas water lifting device |
| CN114265442A (en) * | 2021-11-19 | 2022-04-01 | 青岛海尔空调电子有限公司 | Method for determining outdoor wet bulb temperature, fan control method and electronic equipment |
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| CN114265442B (en) * | 2021-11-19 | 2023-02-24 | 青岛海尔空调电子有限公司 | Method for determining outdoor wet bulb temperature, fan control method and electronic equipment |
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