CN108241908A - A kind of new method of multi-online air-conditioning system outdoor unit type selecting - Google Patents
A kind of new method of multi-online air-conditioning system outdoor unit type selecting Download PDFInfo
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- CN108241908A CN108241908A CN201810045310.3A CN201810045310A CN108241908A CN 108241908 A CN108241908 A CN 108241908A CN 201810045310 A CN201810045310 A CN 201810045310A CN 108241908 A CN108241908 A CN 108241908A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 47
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- 238000005057 refrigeration Methods 0.000 claims abstract description 38
- 238000005265 energy consumption Methods 0.000 claims abstract description 16
- 238000000638 solvent extraction Methods 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims description 8
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Abstract
The present invention provides a kind of methods of multi-online air-conditioning system outdoor unit type selecting, include the following steps：Calculate by when the air-conditioning refrigeration duty value and refrigeration duty value at annual each moment, and determine system partitioning and annual refrigeration duty time statistical form；According to system total refrigeration duty value, alternative outdoor unit selecting type scheme is selected；Determine refrigerating capacity, wasted work rate and its efficiency of these outdoor units at part load；According to the efficiency of annual total sub-load publication situation and each outdoor unit at part load, each outdoor unit selecting type scheme operation reserve under annual part load conditions is determined；Each outdoor unit selecting type scheme is calculated in annual air conditioning energy consumption.Preferred plan of the selecting type scheme for selecting energy consumption minimum as design of air conditioning.The present invention proposes a kind of new method of multi-online air-conditioning system outdoor unit type selecting so that multi-online air-conditioning system is more energy efficient.
Description
Technical field
The present invention relates to computer aided calculation technical field, particularly a kind of multi-online air-conditioning system outdoor unit type selecting
New method.
Background technology
For many years multi-online air-conditioning system outdoor unit type selecting, never obtains the attention of designer, is all basis
The air-conditioning total refrigeration duty value of each function division and the device parameter of each producer, directly go type selecting, as long as the refrigeration on device parameter
Amount is more than or equal to total refrigeration duty.
Since the efficiency of the outdoor unit of various amount of capacity is different, particularly in the case of sub-load, often
The selection method of rule does not account for this difference, so the multi-online air-conditioning system designed, most of is not most energy saving
's.
Invention content
The present invention is the defects of for the above-mentioned prior art, it is proposed that following technical solution.
A kind of method of multi-online air-conditioning system outdoor unit type selecting, which is characterized in that include the following steps：
S1, calculate by when the air-conditioning refrigeration duty value and refrigeration duty value at annual each moment, and determine that system partitioning and whole year are cold
Duration of load application statistical form and system total refrigeration duty value；
Further and according to the determining systems such as room functions, owner's ownership, length of pipe, outdoor unit placement condition point
Area and the total refrigeration duty value of system, while count annual total sub-load time statistical form；
S2, alternative outdoor unit selecting type scheme is selected according to the system total refrigeration duty value that S1 is counted；
S3, the outdoor unit of selection is determined in sub-load, i.e., respectively in the case that 0,25%, 50%, 75%, 100%
Refrigerating capacity, wasted work rate and its Energy Efficiency Ratio, and fit refrigerating capacity-power characteristic formula Y=Ax3+Bx2+ Cx+D, wherein Y are
Power；X is refrigerating capacity；A, B, C, D are power and the relevant constant of refrigerating capacity；
S4, according to each outdoor unit of the S1 annual refrigeration duty time statistical forms counted and S3 at part load
Efficiency determines operation reserve of each outdoor unit selecting type scheme under annual part load conditions；
S5, each outdoor unit selecting type scheme is calculated in annual air conditioning energy consumption；The selecting type scheme for selecting energy consumption minimum is as sky
The preferred plan of adjusting system design.
According to the method for the multi-online air-conditioning system outdoor unit type selecting, further, in step S1 calculate described in
Air-conditioning cold load value and the refrigeration duty value concrete operation step at annual each moment are：
With hourly cooling load software for calculation and annual carry calculation software calculate respectively each room of building by when
Air-conditioning cold load value and the refrigeration duty value at annual each moment.
According to the method for the multi-online air-conditioning system outdoor unit type selecting, in step S1 further, according to room
The combination of one or more conditions of room parameters such as function, owner's ownership, length of pipe, outdoor unit placement condition determines system
The total refrigeration duty value of subregion and system, while count annual total sub-load time statistical form.
It is in step S4 further, described to determine according to the method for the multi-online air-conditioning system outdoor unit type selecting
Operation reserve of each outdoor unit selecting type scheme under annual part load conditions is to ensure that each every outdoor unit of scheme is transported as possible
Row, to obtain highest energy-saving efficiency, determines outdoor unit in part under conditions of 50%~75% rate of load condensate as principle
Operation reserve under load condition.
According to the method for the multi-online air-conditioning system outdoor unit type selecting, further, calculated described in step S5
Each outdoor unit selecting type scheme is in the concrete operation step of annual air conditioning energy consumption：
Each moment is calculated to the outdoor unit wasted work rate at each moment according to the operation reserve and load gauge of selection；
Outdoor unit wasted work rate：Wherein W cold is total outdoor unit wasted work
Rate, Y1iFor the power at First multi-connected machine outdoor unit machine i moment, Y2iFor the power at second multi-connected machine outdoor unit i moment, Yii
For the power at i-th multi-connected machine outdoor unit machine i moment, t cold is total cooling time.
The present invention technique effect be：Propose a kind of method of multi-online air-conditioning system outdoor unit type selecting so that multi-joint
The type selecting of air conditioner system is more reasonable, and the air conditioning energy consumption of design is lower, and operating cost is less.
Description of the drawings
Fig. 1 is a kind of method flow diagram of multi-online air-conditioning system outdoor unit type selecting of the present invention.
Specific embodiment
It 1 is specifically described below in conjunction with the accompanying drawings.
The method that Fig. 1 shows a kind of multi-online air-conditioning system outdoor unit type selecting of the present invention, this method include：
S1, calculate by when the air-conditioning refrigeration duty value and refrigeration duty value at annual each moment, and determine that system partitioning and whole year are cold
Duration of load application statistical form
Further, the concrete operations of the refrigeration duty value step at the air-conditioning cold load value and annual each moment are：
With hourly cooling load software for calculation and annual carry calculation software calculate respectively each room of building by when
Air-conditioning cold load value and the refrigeration duty value at annual each moment.
Further and according to the determining systems such as room functions, owner's ownership, length of pipe, outdoor unit placement condition point
Area and the total refrigeration duty value of system, while count annual total sub-load time statistical form；
S2, the system total refrigeration duty value counted according to S1, select alternative outdoor unit selecting type scheme；
S3, refrigerating capacity, consumption of these outdoor units in sub-load (0,25%, 50%, 75%, 100%) are determined
Power and its Energy Efficiency Ratio, and fit refrigerating capacity-power characteristic formula (Y=Ax3+Bx2+Cx+D).Wherein Y is power；x
For refrigerating capacity；A, B, C, D are power and the relevant constant of refrigerating capacity.
S4, each capacity outdoor unit of situation and S3 are issued in sub-load according to annual total sub-load that S1 is counted
In the case of efficiency, determine operation reserve of each outdoor unit selecting type scheme under annual part load conditions.
Further, it is described to determine operation reserve of each outdoor unit selecting type scheme under annual part load conditions, be
Ensure that each every outdoor unit of scheme is operated in as possible under conditions of 50~75% rate of load condensates, to obtain highest energy-saving efficiency,
The operation reserve of outdoor unit at part load is determined as principle,
S5, each outdoor unit selecting type scheme is calculated in annual air conditioning energy consumption.The selecting type scheme for selecting energy consumption minimum is as sky
The preferred plan of adjusting system design.
Further, each outdoor unit selecting type scheme of calculating is in the concrete operations of annual air conditioning energy consumption step：
Each moment is calculated to the outdoor unit wasted work rate at each moment according to the operation reserve and load gauge of selection.
Multi-connected machine outdoor unit wasted work rate：Wherein W cold is total outdoor
Machine wasted work rate, Y1iFor the power at First multi-connected machine outdoor unit machine i moment, Y2iWork(for second multi-connected machine outdoor unit i moment
Rate, YiiFor the power at i-th multi-connected machine outdoor unit machine i moment, t cold is total cooling time.
As computation model, which is divided into 4 and opens an index bed of office building using in practical engineering project
Open office 1001-1004,1001 area 363.2m of office2, 1002 area 217.4m of office2, 1003 area of office
315.9m2, 1004 area 288m of office2, remaining aisle, toilet, stair, elevator hall etc. are not counted in air conditioning area.The project
Positioned at Qingdao, the meteorologic parameter in Qingdao is selected to be calculated.
The calculating time of office is subject to work hours of general office worker, and specially 8：00~18:00, all minor details are false
Day does not calculate.Building enclosure parameter value refers to table 1.Indoor meteorologic parameter, density of personnel, plant capacity, illumination density and make
2 are shown in Table with the value of the room parameters such as rate.
Table 1：Enclosed structure parameter
2 room parameter of table
According to the computation model of front, calculate time, enclosed structure parameter, room parameter, each air-conditioned room to computation model
Between carry out item by item by when calculation of cooling load and annual calculation of cooling load.At annual total refrigeration duty at part load the time point
Cloth situation is shown in Table 3.From table 3 it can be seen that most of the time refrigeration duty is between 20%~80%, outdoor unit should ensure that total
When refrigeration duty is between this ratio, unit is in efficient operation.
| Sub-load ratio | Hourage (h) | Time scale (%) |
| 0~10% | 0.00 | 0.00 |
| 10%~20% | 39.00 | 4.17 |
| 20%~30% | 87.00 | 9.30 |
| 30%~40% | 141.00 | 15.08 |
| 40~50% | 201.00 | 21.50 |
| 50%~60% | 164.00 | 17.54 |
| 60%~70% | 176.00 | 18.82 |
| 70%~80% | 80.00 | 8.56 |
| 80%~90% | 33.00 | 3.53 |
| 90%~100% | 14.00 | 1.50 |
Table 3：Sub-load hour distribution situation
According to requirements of the owner, every layer of office 1001 and 1002 is a system, and office 1003 and 1004 is for one
System, using data such as refrigeration duty, the fresh air volumes at each room each moment calculated, determines the maximum cold corresponding to outdoor unit
Load determines 3 selecting type schemes according to the capacity of outdoor unit, and specifically referring to table 4, (outdoor unit device parameter is with reference to a certain multi-joint
Air conditioner brand), it is prioritization scheme that wherein scheme one, which is conventional selecting type scheme, scheme two and scheme three,.
Table 4：Outdoor unit selecting type scheme
Power and Energy Efficiency Ratio of five kinds of outdoor units under 0,25%, 50%, 75%, 100% sub-load, refer to 5., table
According to data in table, using Excel tools, refrigerating capacity-power characteristic of five kinds of outdoor units is fitted, specific formula is shown in Table 6.
Table 5：Different outdoor units power at part load and Energy Efficiency Ratio
Table 6：Mechanism cold-power characteristic formula outside different chamber
As can be seen from Table 5, each outdoor unit is most efficient in the operation of 50~75% rate of load condensates, so, ensureing often
A every outdoor unit of scheme is operated in as possible under conditions of 50~75% rate of load condensates, the energy-saving efficiency highest that can be obtained, with this
The operation reserve of outdoor unit at part load is determined for principle, and the content in bracket is the load of each outdoor unit operation
Rate specifically refers to table 7.
Table 7：The operation reserve of outdoor unit at part load
By the operation reserve of table 7, the annual air-conditioning cold load value X that will be calculatedi, utilize outdoor units different in table 6
Refrigerating capacity-power characteristic formula, formulaCalculate different skies
Outdoor unit selecting type scheme is adjusted, the outdoor unit energy consumption and the fractional energy savings relative to scheme 1, specific data in annual entire air-conditioning season refer to
Table 7.From table 7, it can be seen that the energy consumption of scheme 3 is minimum, most energy saving.
| Scheme | Scheme 1 | Scheme 2 | Scheme 3 |
| Annual air conditioning energy consumption (KW) | 11178.99 | 10296.13 | 9326.057 |
| Relative energy saving ratio (%) | 0 | 7.90% | 16.58% |
Table 7：The air conditioning energy consumption and relative energy saving ratio of different schemes
It should be noted last that：Above example only illustrates and not to limitation technical scheme of the present invention, although reference
The present invention is described in detail in above-described embodiment, it will be understood by those of ordinary skill in the art that：It still can be to this hair
It is bright to be modified or replaced equivalently, it without departing from the spirit or scope of the invention, or any substitutions, should all
Cover in scope of the presently claimed invention.
Claims (5)
- A kind of 1. method of multi-online air-conditioning system outdoor unit type selecting, which is characterized in that include the following steps：S1, calculate by when the air-conditioning refrigeration duty value and refrigeration duty value at annual each moment, and determine system partitioning and annual refrigeration duty Time statistical form and system total refrigeration duty value；Further and system partitioning is determined according to room functions, owner's ownership, length of pipe, outdoor unit placement condition and is The total refrigeration duty value of system, while count annual total sub-load time statistical form；S2, alternative outdoor unit selecting type scheme is selected according to the system total refrigeration duty value that S1 is counted；S3, determine the outdoor unit of selection in sub-load, i.e., respectively in the case that 0,25%, 50%, 75%, 100% refrigeration Amount, wasted work rate and its Energy Efficiency Ratio, and fit refrigerating capacity-power characteristic formula Y=Ax3+Bx2+ Cx+D, wherein Y are work( Rate；X is refrigerating capacity；A, B, C, D are power and the relevant constant of refrigerating capacity；S4, the efficiency according to each outdoor unit of the S1 annual refrigeration duty time statistical forms counted and S3 at part load, Determine operation reserve of each outdoor unit selecting type scheme under annual part load conditions；S5, each outdoor unit selecting type scheme is calculated in annual air conditioning energy consumption；The selecting type scheme for selecting energy consumption minimum is as air-conditioning system The preferred plan for design of uniting.
- 2. the method for multi-online air-conditioning system outdoor unit type selecting according to claim 1, further, step S1 falls into a trap It calculates the air-conditioning cold load value and the refrigeration duty value concrete operation step at annual each moment is：With hourly cooling load software for calculation and annual carry calculation software calculate respectively each room of building by when air-conditioning Refrigeration duty value and the refrigeration duty value at annual each moment.
- 3. the method for multi-online air-conditioning system outdoor unit type selecting according to claim 2, in step S1 further, root Combination according to one or more conditions of the room parameters such as room functions, owner's ownership, length of pipe, outdoor unit placement condition is true Determine the total refrigeration duty value of system partitioning and system, while count annual total sub-load time statistical form.
- 4. the method for multi-online air-conditioning system outdoor unit type selecting according to claim 3, in step S4 further, institute Operation reserve of the determining each outdoor unit selecting type scheme under annual part load conditions is stated, is to ensure that each every outdoor unit of scheme It operates in as possible under conditions of 50%~75% rate of load condensate, to obtain highest energy-saving efficiency, outdoor unit is determined as principle Operation reserve at part load.
- 5. the method for multi-online air-conditioning system outdoor unit type selecting according to claim 4, further, institute in step S5 State each outdoor unit selecting type scheme of calculating is in the concrete operation step of annual air conditioning energy consumption：Each moment is calculated to the outdoor unit wasted work rate at each moment according to the operation reserve and load gauge of selection；Outdoor unit wasted work rate：Wherein W is cold for total outdoor unit wasted work rate, Y1i For the power at First multi-connected machine outdoor unit machine i moment, Y2iFor the power at second multi-connected machine outdoor unit i moment, YiiIt is i-th The power at platform multi-connected machine outdoor unit machine i moment, t cold is total cooling time.
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Cited By (8)
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| CN109595747A (en) * | 2018-12-24 | 2019-04-09 | 珠海格力电器股份有限公司 | Energy Consumption Simulation Method and Device of Air Conditioning System |
| CN109781447A (en) * | 2019-02-01 | 2019-05-21 | 上海理工大学 | Air-conditioning box efficiency is with the method for runing time limit evolution properties in acquisition subway station |
| CN109829635A (en) * | 2019-01-21 | 2019-05-31 | 上海理工大学 | Cold source equipment capacity dynamic matching method based on operation year limited load evolution Feature |
| CN110135639A (en) * | 2019-05-14 | 2019-08-16 | 珠海格力电器股份有限公司 | Multi-online type selection method and device, computer equipment and storage medium |
| CN111797460A (en) * | 2020-05-21 | 2020-10-20 | 武汉理工大学 | Method and device for selecting type of equipment of cruise ship air conditioning system |
| CN113465122A (en) * | 2021-06-21 | 2021-10-01 | 北京纪新泰富机电技术股份有限公司 | Air conditioner host model selection method and device |
| CN113706238A (en) * | 2021-08-12 | 2021-11-26 | 珠海格力电器股份有限公司 | Air conditioner model selection method and device, computer equipment and storage medium |
| CN114117773A (en) * | 2021-11-22 | 2022-03-01 | 珠海格力电器股份有限公司 | Simulation method and system for all-air conditioning system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595747A (en) * | 2018-12-24 | 2019-04-09 | 珠海格力电器股份有限公司 | Energy Consumption Simulation Method and Device of Air Conditioning System |
| CN109829635A (en) * | 2019-01-21 | 2019-05-31 | 上海理工大学 | Cold source equipment capacity dynamic matching method based on operation year limited load evolution Feature |
| CN109781447A (en) * | 2019-02-01 | 2019-05-21 | 上海理工大学 | Air-conditioning box efficiency is with the method for runing time limit evolution properties in acquisition subway station |
| CN110135639A (en) * | 2019-05-14 | 2019-08-16 | 珠海格力电器股份有限公司 | Multi-online type selection method and device, computer equipment and storage medium |
| CN111797460A (en) * | 2020-05-21 | 2020-10-20 | 武汉理工大学 | Method and device for selecting type of equipment of cruise ship air conditioning system |
| CN113465122A (en) * | 2021-06-21 | 2021-10-01 | 北京纪新泰富机电技术股份有限公司 | Air conditioner host model selection method and device |
| CN113465122B (en) * | 2021-06-21 | 2023-03-03 | 北京纪新泰富机电技术股份有限公司 | Air conditioner host model selection method and device |
| CN113706238A (en) * | 2021-08-12 | 2021-11-26 | 珠海格力电器股份有限公司 | Air conditioner model selection method and device, computer equipment and storage medium |
| CN114117773A (en) * | 2021-11-22 | 2022-03-01 | 珠海格力电器股份有限公司 | Simulation method and system for all-air conditioning system |
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| CN108241908B (en) | 2021-09-24 |
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