CN107461886A - A kind of appraisal procedure and device of hospital's PAU cold conveying efficiency - Google Patents
A kind of appraisal procedure and device of hospital's PAU cold conveying efficiency Download PDFInfo
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- CN107461886A CN107461886A CN201710637510.3A CN201710637510A CN107461886A CN 107461886 A CN107461886 A CN 107461886A CN 201710637510 A CN201710637510 A CN 201710637510A CN 107461886 A CN107461886 A CN 107461886A
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Abstract
The invention discloses the appraisal procedure and device of a kind of hospital's PAU cold conveying efficiency, this method includes：According to chilled water supply water temperature, return water temperature and the chilled water water supply flow of very first time interval collection PAU, and gather PAU fan energy consumption and the air enthalpy in PAU air inlet/outlet air port；Calculate PAU cold conveying capacity；Calculate PAU cold conveying efficiency；The average value of PAU cold conveying efficiency in the second time interval is calculated, and takes maximum as reference value from the average value for calculating gained in real time；The PAU cold obtained in real time is conveyed into efficiency compared with reference value.The invention has the beneficial effect that：Information is gathered installed in the various kinds of sensors of PAU by computer software platform and collection, carries out PAU cold conveying energy efficiency evaluation and judgement, so as to ensure PAU safety, reliable and Effec-tive Function method.
Description
Technical field
The present invention relates to hospital central air-conditioning technical field, more particularly to a kind of hospital's PAU cold conveying efficiency
Appraisal procedure and device.
Background technology
In field of central air-conditioning, the thermal comfort of terminal user is typically to be used for assessing whether central air conditioner system function has
Imitate one of important indicator realized.So-called human thermal comfort, refer to human body to the satisfied subjective evaluation of thermal and humidity environment.Heat is relaxed
It is suitable to be human body self by thermal balance and the environmental aspect felt and integrate whether acquisition comfortably feels that it is by giving birth to
What reason and integrative psychological determined, also, psychological impression is more heavily weighted toward, the ambient parameter for influenceing human thermal comfort mainly has
Air themperature, air velocity, the humidity of air and mean radiant temperature；The inherent parameters of people have clothes thermal resistance and labor intensity.
The research of human thermal comfort is related to the subjects such as the psychology of building ermal physics, the physiology of mannequin surface modeling mechanism and people.People's
The time for having more than 80% in life is spent indoors, Indoor Environmental Quality such as sound, light heat environment and indoor air quality
Direct influence can all be produced on the physical and mental health, comfort and operating efficiency of people.Meanwhile substantial amounts of research both at home and abroad shows,
Indoor air quality is also relevant with thermal environment：1) aerial temperature and humidity and wind speed can influence the release of indoor pollutant；2) to dirt
It is relevant with temperature to contaminate the sensation of thing, external relevant research is thought, in the case that the chemical composition of air keeps constant indoors, temperature
Degree reduction can be made one to feel more comfortable, and the percent dissatisfied of air quality can also be reduced.In order to obtain comfortable thermal environment, respectively
State will consume the substantial amounts of energy and be used for heat supply and air-conditioning every year.
After being directed to the air quality and refrigeration requirement that meet hospital, hospital clinic is waited to see the doctor the precooling air-conditioning in region
Whether case (PAU, Pre-Cooling Air Handling Unit), which energy-efficient can be operated in routine maintenance procedure, seems outstanding
To be important, traditional PAU lacks the method for assessing and judging cold conveying efficiency, if PAU is located for a long time
It is it is difficult to find the horizontal height of its efficiency, this may cause the energy and resource by regular visit in the relatively low operating mode of efficiency
Significant wastage.
The content of the invention
It is an object of the invention to solve PAU in the prior art to be chronically at the relatively low operating mode of efficiency, by fixed
The problem of it is difficult the height for finding that its efficiency is horizontal that phase inspection, which is, and this may cause the significant wastage of the energy and resource, there is provided one
The appraisal procedure and device of kind hospital PAU cold conveying efficiency.
The technical solution adopted for the present invention to solve the technical problems is：
On the one hand, there is provided a kind of appraisal procedure of hospital's PAU cold conveying efficiency, including：
According to chilled water supply water temperature, return water temperature and the chilled water of default very first time interval collection PAU
Water supply flow, and gather PAU fan energy consumption and the air enthalpy in PAU air inlet/outlet air port；
According to the chilled water supply water temperature, the return water temperature, the chilled water water supply flow and default chilled water
Specific heat capacity calculates PAU cold conveying capacity；
Calculated according to the PAU cold conveying capacity, the air enthalpy and the PAU fan energy consumption
PAU cold conveys efficiency；
Calculate the average value of PAU cold conveying efficiency in default second time interval, and in real time from
Calculate in the average value of gained and take maximum as reference value；
The PAU cold obtained in real time is conveyed into efficiency compared with the reference value, if the PAU is cold
Amount conveying efficiency is less than the reference value, then performs default early warning mechanism.
In appraisal procedure of the present invention, it is described according to the chilled water supply water temperature, it is the return water temperature, described
Chilled water water supply flow and default chilled water specific heat capacity calculate PAU cold conveying capacity, including：
Calculate the difference of the chilled water supply water temperature and the return water temperature：
ΔTwater=TRtn, water-TSup, water；
Calculate PAU cold conveying capacity：
QAHU=Cwater×Mwater×ΔTwater；
Wherein, the difference of the chilled water supply water temperature and the return water temperature is Δ Twater, the return water temperature is
TRtn, water, the chilled water supply water temperature is TSup, water, the PAU cold conveying capacity is QAHU, the chilled water
Specific heat capacity is Cwater, Cwater=4.2kJ/kgK, the chilled water water supply flow are Mwater。
It is described according to the PAU cold conveying capacity, the air enthalpy in appraisal procedure of the present invention
Value and the PAU fan energy consumption calculate PAU cold conveying efficiency, including：
The air enthalpy includes air intake air enthalpy and air-out air enthalpy, calculate the air-out air enthalpy with it is described
The difference of air intake air enthalpy：
Δiair=iOut, air-iIn, air；
Calculate PAU cold conveying efficiency：
Wherein, the difference of the air-out air enthalpy and the air intake air enthalpy is Δ iair, the air-out air enthalpy
For iOut, air, the air intake air enthalpy is iIn, air, the PAU cold conveying efficiency is EEAHU, the precooling sky
It is P to adjust case fan energy consumptionAHU。
In appraisal procedure of the present invention, the PAU is cold in default second time interval of calculating
The average value of amount conveying efficiency, and maximum is taken as reference value from the average value for calculating gained in real time, including：
Calculate the average value of the PAU cold conveying efficiency in default second time interval；
Maximum is taken as reference value from the average value for calculating gained in real time：
Wherein, n is the number at very first time interval, and i and j are data collection point, reference value EEavg。
In appraisal procedure of the present invention, it is described by the PAU cold obtained in real time convey efficiency with it is described
Reference value compares, if PAU cold conveying efficiency is less than the reference value, performs default early warning mechanism, wraps
Include：
The PAU cold conveying efficiency at kth moment is obtained, by it compared with the reference value；
If the PAU cold conveying efficiency is less than the reference value, precooling sky is sent by default system
The relatively low early warning of case conveying efficiency is adjusted to remind property management personnel to be observed and handled.
On the other hand, there is provided a kind of apparatus for evaluating of hospital's PAU cold conveying efficiency, wherein being stored with a plurality of
Instruction, the instruction are suitable to be loaded and performed by processor, including：
According to chilled water supply water temperature, return water temperature and the chilled water of default very first time interval collection PAU
Water supply flow, and gather PAU fan energy consumption and the air enthalpy in PAU air inlet/outlet air port；
According to the chilled water supply water temperature, the return water temperature, the chilled water water supply flow and default chilled water
Specific heat capacity calculates PAU cold conveying capacity；
Calculated according to the PAU cold conveying capacity, the air enthalpy and the PAU fan energy consumption
PAU cold conveys efficiency；
Calculate the average value of PAU cold conveying efficiency in default second time interval, and in real time from
Calculate in the average value of gained and take maximum as reference value；
The PAU cold obtained in real time is conveyed into efficiency compared with the reference value, if the PAU is cold
Amount conveying efficiency is less than the reference value, then performs default early warning mechanism.
In apparatus for evaluating of the present invention, it is described according to the chilled water supply water temperature, it is the return water temperature, described
Chilled water water supply flow and default chilled water specific heat capacity calculate PAU cold conveying capacity, including：
Calculate the difference of the chilled water supply water temperature and the return water temperature：
ΔTwater=TRtn, water-TSup, water；
Calculate PAU cold conveying capacity：
QAHU=Cwater×Mwater×ΔTwater；
Wherein, the difference of the chilled water supply water temperature and the return water temperature is Δ Twater, the return water temperature is
TRtn, water, the chilled water supply water temperature is TSup, water, the PAU cold conveying capacity is QAHU, the chilled water
Specific heat capacity is Cwater, Cwater=4.2kJ/kgK, the chilled water water supply flow are Mwater。
It is described according to the PAU cold conveying capacity, the air enthalpy in apparatus for evaluating of the present invention
Value and the PAU fan energy consumption calculate PAU cold conveying efficiency, including：
The air enthalpy includes air intake air enthalpy and air-out air enthalpy, calculate the air-out air enthalpy with it is described
The difference of air intake air enthalpy：
Δiair=iOut, air-iIn, air；
Calculate PAU cold conveying efficiency：
Wherein, the difference of the air-out air enthalpy and the air intake air enthalpy is Δ iair, the air-out air enthalpy
For iOut, air, the air intake air enthalpy is iIn, air, the PAU cold conveying efficiency is EEAHU, the precooling sky
It is P to adjust case fan energy consumptionAHU。
In apparatus for evaluating of the present invention, the PAU is cold in default second time interval of calculating
The average value of amount conveying efficiency, and maximum is taken as reference value from the average value for calculating gained in real time, including：
Calculate the average value of the PAU cold conveying efficiency in default second time interval；
Maximum is taken as reference value from the average value for calculating gained in real time：
Wherein, n is the number at very first time interval, and i and j are data collection point, reference value EEavg。
In apparatus for evaluating of the present invention, it is described by the PAU cold obtained in real time convey efficiency with it is described
Reference value compares, if PAU cold conveying efficiency is less than the reference value, performs default early warning mechanism, wraps
Include：
The PAU cold conveying efficiency at kth moment is obtained, by it compared with the reference value；
If the PAU cold conveying efficiency is less than the reference value, precooling sky is sent by default system
The relatively low early warning of case conveying efficiency is adjusted to remind property management personnel to be observed and handled.
The appraisal procedure and device of a kind of hospital's PAU cold conveying efficiency disclosed above have beneficial below
Effect：Information is gathered installed in the various kinds of sensors of PAU by computer software platform and collection, it is empty to carry out precooling
Case cold conveying energy efficiency evaluation and judgement are adjusted, so as to ensure PAU safety, reliable and Effec-tive Function method.
Brief description of the drawings
Fig. 1 is the stream for the appraisal procedure that a kind of hospital's PAU cold that one embodiment of the invention provides conveys efficiency
Cheng Tu.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
The invention provides the appraisal procedure and device of a kind of hospital's PAU cold conveying efficiency, its purpose exists
In, information and logic judgment controller are gathered by the various kinds of sensors installed in PAU, can be long-range in backstage progress
, the too low early warning of efficiency judges, and then sends the too low alarm of PAU cold conveying efficiency, reminds property operation maintenance personnel
Targetedly PAU is overhauled, breakdown judge or device upgrade, so as to ensure PAU safety, reliably
And efficient operation, finally realize the purpose that PAU saves.
Referring to Fig. 1, Fig. 1 is the assessment that a kind of hospital's PAU cold that one embodiment of the invention provides conveys efficiency
The flow chart of method, the appraisal procedure of hospital's PAU cold conveying efficiency is realized by computer program, including step
Rapid S1-S5：
S1, gather according to the default very first time interval chilled water supply water temperature of PAU, return water temperature and cold
Freeze water water supply flow, and gather PAU fan energy consumption and the air enthalpy in PAU air inlet/outlet air port；Such as：Adopt
The chilled water for integrating and recording in a period of time (such as time interval is provided with n=10 time interval as 15min) PAU supplies
Coolant-temperature gage TSup, water, return water temperature TRtn, water, chilled water water supply flow Mwater, collection PAU fan energy consumption PAHU, adopt
Collect the air enthalpy i in PAU air inlet/outlet air portOut, air、iIn, air。
S2, according to law of conservation of energy, supplied according to the chilled water supply water temperature, the return water temperature, the chilled water
Water-carrying capacity and default chilled water specific heat capacity calculate PAU cold conveying capacity；Step S2 includes sub-step S21-S22：
S21, the difference for calculating the chilled water supply water temperature and the return water temperature：
ΔTwater=TRtn, water-TSup, water；
S22, calculate PAU cold conveying capacity：
QAHU=Cwater×Mwater×ΔTwater；
Wherein, the difference of the chilled water supply water temperature and the return water temperature is Δ Twater, the return water temperature is
TRtn, water, the chilled water supply water temperature is TSup, water, the PAU cold conveying capacity is QAHU, the chilled water
Specific heat capacity is Cwater, Cwater=4.2kJ/kgK, the chilled water water supply flow are Mwater。
S3, according to the PAU cold conveying capacity, the air enthalpy and the PAU fan energy consumption
Calculate PAU cold conveying efficiency；Step S3 includes sub-step S31-S32：
S31, the air enthalpy include air intake air enthalpy and air-out air enthalpy, calculate the air-out air enthalpy with
The difference of the air intake air enthalpy：
Δiair=iOut, air-iIn, air；
S32, calculate PAU cold conveying efficiency：
Wherein, the difference of the air-out air enthalpy and the air intake air enthalpy is Δ iair, the air-out air enthalpy
For iOut, air, the air intake air enthalpy is iIn, air, the PAU cold conveying efficiency is EEAHU(unit used electricity amount
The energy (cold) that can be conveyed), the PAU fan energy consumption is PAHU。
S4, the average value for calculating the PAU cold conveying efficiency in default second time interval, and in real time
Ground takes maximum as reference value from the average value for calculating gained；Step S4 includes sub-step S41-S42：
S41, the average value for calculating the PAU cold conveying efficiency in default second time interval；
S42, in real time from calculate gained average value in take maximum as reference value：
Wherein, n is the number at very first time interval, and i and j are data collection point, reference value EEavg.Such as：Calculate
(such as time interval is 15min, is provided with n=10 time interval) PAU cold conveys efficiency average value in a period of time
EEavg, and the reference for judging PAU cold conveying efficiency height is used as using higher value in follow-up result of calculation
Value.
S5, by the PAU cold obtained in real time convey efficiency compared with the reference value, if the precooling air-conditioning
Case cold conveying efficiency is less than the reference value, then performs default early warning mechanism.Step S5 includes sub-step S51-S52：
S51, the PAU cold conveying efficiency for obtaining the kth moment, by it compared with the reference value；
If S52, the PAU cold conveying efficiency are less than the reference value, sent by default system pre-
Cold air-conditioning box conveys the relatively low early warning of efficiency to remind property management personnel to be observed and handled.Such as：Compare kth moment reality
When PAU cold conveying efficiencyEfficiency average value size is conveyed with the newest PAU cold of calculating,
If real-time energy efficiency is less than average efficiency, pass through IBMS (Intelligent Building Management System) system
System sends the relatively low early warning of PAU cold conveying efficiency, as follows, reminds property management personnel to be observed and located
Reason：
MlowThe conveying relatively low alarm of efficiency of PAU cold is represented, 1 represents alarm triggering；TSup, water, TRtn, water,
ΔTwaterPAU system chilled water supply water temperature and return water temperature and its temperature difference are represented respectively；iOut, air, iIn, air, Δ
iairPAU air intake air enthalpy, air-out air enthalpy and air inlet/outlet air enthalpy difference are represented respectively；QAHU, PAHUTable respectively
Show that PAU cold conveys energy (i.e. cold) and blower motor energy consumption；Cwater, MwaterThe specific heat of chilled water is represented respectively
Hold, and the water-carrying capacity of chilled water；EEAHU, EEavgRepresent that PAU cold conveying efficiency and its formulation section are averaged respectively
Value；K represents the corresponding kth moment, and its adjacent moment interval may be configured as 1min, 2min, 5min, or 15min.I, j, n represent number
According to sampled point, such as n=10.
In a word, it is empty to be applied to hospital central for the appraisal procedure of hospital's PAU cold conveying efficiency provided by the invention
Tune field, more particularly to the method that the horizontal remote auto of hospital clinic PAU cold conveying efficiency is assessed.The present invention
By the various kinds of sensors installed in PAU and logic judgment controller, and background application software (such as IBMS,
Intelligent Building Management System) remote energy efficiency judgement and early warning are carried out, only need to be in existing precooling
Air-conditioning box chilled water supply and return water temperature sensor, chilled water water flow sensor, air blow and return air enthalpy sensor, precooling air-conditioning
Case blower fan electric energy meter, the controller with register, PAU cold conveying energy efficiency evaluation result is passed through into wire/wireless
Network-feedback is to IBMS software platforms, you can effective to judge whether PAU cold conveying efficiency is relatively low, sends in time
Early warning, property management personnel's timely processing problem is reminded, and then ensure the operation of PAU reliable and energy-saving.
There is provided herein the various operations of embodiment.In one embodiment, described one or operation may be constructed one
The computer-readable instruction stored on individual or computer-readable medium, it will be so that computing device be held when being performed by electronic equipment
The row operation.Describing the orders of some or all of operations, to should not be construed as to imply that these operations necessarily order dependent
's.It will be appreciated by those skilled in the art that the alternative sequence of the benefit with this specification.Furthermore, it is to be understood that it is not institute
There is operation to exist in each embodiment provided in this article.
Moreover, word " preferable " used herein means serving as example, example or illustration.Feng Wen is described as " preferably
" any aspect or design be not necessarily to be construed as than other aspect or design it is more favourable.On the contrary, the use purport of word " preferable "
Concept is being proposed in a concrete fashion.Term "or" as used in this application is intended to mean the "or" included and non-excluded
"or".I.e., unless otherwise or clear from the context, " X means that nature includes any one of arrangement using A or B ".
That is, if X uses A；X uses B；Or X uses A and B both, then " X is met using A or B " in foregoing any example.
Moreover, although having shown and described the disclosure relative to one or implementation, but people in the art
Member is based on the reading to the specification and drawings and understands it will be appreciated that equivalent variations and modification.The disclosure includes all such
Modifications and variations, and be limited only by the scope of the following claims.In particular, to being held by said modules (such as element etc.)
Capable various functions, the term for describing such component be intended to correspond to the specified function of performing the component (such as its
Functionally of equal value) random component (unless otherwise instructed), with performing the disclosure shown in this article in structure
Exemplary implementations in function open structure it is not equivalent.In addition, although the special characteristic of the disclosure relative to
Only one in some implementations is disclosed, but this feature can be with that can be such as the phase for given or application-specific
Hope one or other combinations of features with other favourable implementations.Moreover, with regard to term " comprising ", " having ", " containing " or
For its deformation is used in embodiment or claim, such term is intended to the side similar to term "comprising"
Formula includes.
Each functional unit in the embodiment of the present invention can be integrated in a processing module or unit list
Solely be physically present, can also multiple or multiple above units be integrated in a module.Above-mentioned integrated module can both use
The form of hardware is realized, can also be realized in the form of software function module.If the integrated module is with software function
The form of module is realized and is used as independent production marketing or is situated between in use, a computer-readable storage can also be stored in
In matter.Storage medium mentioned above can be read-only storage, disk or CD etc..Above-mentioned each device or system, can be with
Perform the storage method in correlation method embodiment.
In summary, although the present invention is disclosed above with preferred embodiment, above preferred embodiment simultaneously is not used to limit
The system present invention, one of ordinary skill in the art, without departing from the spirit and scope of the present invention, it can make various changes and profit
Decorations, therefore protection scope of the present invention is defined by the scope that claim defines.
Claims (10)
- A kind of 1. appraisal procedure of hospital's PAU cold conveying efficiency, it is characterised in that including：Chilled water supply water temperature, return water temperature and chilled water according to default very first time interval collection PAU supply water Flow, and gather PAU fan energy consumption and the air enthalpy in PAU air inlet/outlet air port；According to the chilled water supply water temperature, the return water temperature, the chilled water water supply flow and default chilled water specific heat Hold and calculate PAU cold conveying capacity；Precooling is calculated according to the PAU cold conveying capacity, the air enthalpy and the PAU fan energy consumption Air-conditioning box cold conveys efficiency；The average value of the PAU cold conveying efficiency in default second time interval is calculated, and in real time from calculating Maximum is taken in the average value of gained as reference value；The PAU cold obtained in real time is conveyed into efficiency compared with the reference value, if the PAU cold is defeated Send efficiency to be less than the reference value, then perform default early warning mechanism.
- 2. appraisal procedure according to claim 1, it is characterised in that it is described according to the chilled water supply water temperature, it is described Return water temperature, the chilled water water supply flow and default chilled water specific heat capacity calculate PAU cold conveying capacity, including：Calculate the difference of the chilled water supply water temperature and the return water temperature：ΔTwater=TRtn, water-TSup, water；Calculate PAU cold conveying capacity：QAHU=Cwater×Mwater×ΔTwater；Wherein, the difference of the chilled water supply water temperature and the return water temperature is Δ Twater, the return water temperature is TRtn, water, the chilled water supply water temperature is TSup, water, the PAU cold conveying capacity is QAHU, the chilled water Specific heat capacity is Cwater, Cwater=4.2kJ/kg.K, the chilled water water supply flow are Mwater。
- 3. appraisal procedure according to claim 2, it is characterised in that described to be conveyed according to the PAU cold Amount, the air enthalpy and the PAU fan energy consumption calculate PAU cold conveying efficiency, including：The air enthalpy includes air intake air enthalpy and air-out air enthalpy, calculates the air-out air enthalpy and the air intake The difference of air enthalpy：Δiair=iOut, air-iIn, air；Calculate PAU cold conveying efficiency：<mrow> <msub> <mi>EE</mi> <mrow> <mi>A</mi> <mi>H</mi> <mi>U</mi> </mrow> </msub> <mo>=</mo> <mfrac> <msub> <mi>Q</mi> <mrow> <mi>A</mi> <mi>H</mi> <mi>U</mi> </mrow> </msub> <mrow> <msub> <mi>P</mi> <mrow> <mi>A</mi> <mi>H</mi> <mi>U</mi> </mrow> </msub> <msub> <mi>&Delta;i</mi> <mrow> <mi>a</mi> <mi>i</mi> <mi>r</mi> </mrow> </msub> </mrow> </mfrac> <mo>;</mo> </mrow>Wherein, the difference of the air-out air enthalpy and the air intake air enthalpy is Δ iair, the air-out air enthalpy is iOut, air, the air intake air enthalpy is iIn, air, the PAU cold conveying efficiency is EEAHU, the precooling air-conditioning Case fan energy consumption is PAHU。
- 4. appraisal procedure according to claim 3, it is characterised in that described to calculate described in default second time interval PAU cold conveys the average value of efficiency, and takes maximum as reference from the average value for calculating gained in real time Value, including：Calculate the average value of the PAU cold conveying efficiency in default second time interval；Maximum is taken as reference value from the average value for calculating gained in real time：<mrow> <msub> <mi>EE</mi> <mrow> <mi>a</mi> <mi>v</mi> <mi>g</mi> </mrow> </msub> <mo>=</mo> <mi>M</mi> <mi>a</mi> <mi>x</mi> <mrow> <mo>(</mo> <mfrac> <mrow> <munderover> <mo>&Sigma;</mo> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <mi>n</mi> </munderover> <msubsup> <mi>EE</mi> <mrow> <mi>A</mi> <mi>H</mi> <mi>U</mi> </mrow> <mi>i</mi> </msubsup> </mrow> <mi>n</mi> </mfrac> <mo>,</mo> <mfrac> <mrow> <munderover> <mo>&Sigma;</mo> <mrow> <mi>j</mi> <mo>=</mo> <mn>2</mn> </mrow> <mrow> <mi>n</mi> <mo>+</mo> <mn>1</mn> </mrow> </munderover> <msubsup> <mi>EE</mi> <mrow> <mi>A</mi> <mi>H</mi> <mi>U</mi> </mrow> <mi>j</mi> </msubsup> </mrow> <mi>n</mi> </mfrac> <mo>)</mo> </mrow> </mrow>Wherein, n is the number at very first time interval, and i and j are data collection point, reference value EEavg。
- 5. appraisal procedure according to claim 4, it is characterised in that described that the PAU cold obtained in real time is defeated Efficiency is sent compared with the reference value, if PAU cold conveying efficiency is less than the reference value, is performed default Early warning mechanism, including：The PAU cold conveying efficiency at kth moment is obtained, by it compared with the reference value；If the PAU cold conveying efficiency is less than the reference value, PAU is sent by default system The relatively low early warning of efficiency is conveyed to remind property management personnel to be observed and handled.
- 6. a kind of apparatus for evaluating of hospital's PAU cold conveying efficiency, wherein being stored with a plurality of instruction, the instruction is suitable In being loaded by processor and performed, it is characterised in that including：Chilled water supply water temperature, return water temperature and chilled water according to default very first time interval collection PAU supply water Flow, and gather PAU fan energy consumption and the air enthalpy in PAU air inlet/outlet air port；According to the chilled water supply water temperature, the return water temperature, the chilled water water supply flow and default chilled water specific heat Hold and calculate PAU cold conveying capacity；Precooling is calculated according to the PAU cold conveying capacity, the air enthalpy and the PAU fan energy consumption Air-conditioning box cold conveys efficiency；The average value of the PAU cold conveying efficiency in default second time interval is calculated, and in real time from calculating Maximum is taken in the average value of gained as reference value；The PAU cold obtained in real time is conveyed into efficiency compared with the reference value, if the PAU cold is defeated Send efficiency to be less than the reference value, then perform default early warning mechanism.
- 7. apparatus for evaluating according to claim 6, it is characterised in that it is described according to the chilled water supply water temperature, it is described Return water temperature, the chilled water water supply flow and default chilled water specific heat capacity calculate PAU cold conveying capacity, including：Calculate the difference of the chilled water supply water temperature and the return water temperature：ΔTwater=TRtn, water-TSup, water；Calculate PAU cold conveying capacity：QAHU=Cwater×Mwater×ΔTwater；Wherein, the difference of the chilled water supply water temperature and the return water temperature is Δ Twater, the return water temperature is TRtn, water, the chilled water supply water temperature is TSup, water, the PAU cold conveying capacity is QAHU, the chilled water Specific heat capacity is Cwater, Cwater=4.2kJ/kgK, the chilled water water supply flow are Mwater。
- 8. apparatus for evaluating according to claim 7, it is characterised in that described to be conveyed according to the PAU cold Amount, the air enthalpy and the PAU fan energy consumption calculate PAU cold conveying efficiency, including：The air enthalpy includes air intake air enthalpy and air-out air enthalpy, calculates the air-out air enthalpy and the air intake The difference of air enthalpy：Δiair=iOut, air-iIn, air；Calculate PAU cold conveying efficiency：<mrow> <msub> <mi>EE</mi> <mrow> <mi>A</mi> <mi>H</mi> <mi>U</mi> </mrow> </msub> <mo>=</mo> <mfrac> <msub> <mi>Q</mi> <mrow> <mi>A</mi> <mi>H</mi> <mi>U</mi> </mrow> </msub> <mrow> <msub> <mi>P</mi> <mrow> <mi>A</mi> <mi>H</mi> <mi>U</mi> </mrow> </msub> <msub> <mi>&Delta;i</mi> <mrow> <mi>a</mi> <mi>i</mi> <mi>r</mi> </mrow> </msub> </mrow> </mfrac> <mo>;</mo> </mrow>Wherein, the difference of the air-out air enthalpy and the air intake air enthalpy is Δ iair, the air-out air enthalpy is iOut, air, the air intake air enthalpy is iIn, air, the PAU cold conveying efficiency is EEAHU, the precooling air-conditioning Case fan energy consumption is PAHU。
- 9. apparatus for evaluating according to claim 8, it is characterised in that described to calculate described in default second time interval PAU cold conveys the average value of efficiency, and takes maximum as reference from the average value for calculating gained in real time Value, including：Calculate the average value of the PAU cold conveying efficiency in default second time interval；Maximum is taken as reference value from the average value for calculating gained in real time：<mrow> <msub> <mi>EE</mi> <mrow> <mi>a</mi> <mi>v</mi> <mi>g</mi> </mrow> </msub> <mo>=</mo> <mi>M</mi> <mi>a</mi> <mi>x</mi> <mrow> <mo>(</mo> <mfrac> <mrow> <munderover> <mo>&Sigma;</mo> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <mi>n</mi> </munderover> <msubsup> <mi>EE</mi> <mrow> <mi>A</mi> <mi>H</mi> <mi>U</mi> </mrow> <mi>i</mi> </msubsup> </mrow> <mi>n</mi> </mfrac> <mo>,</mo> <mfrac> <mrow> <munderover> <mo>&Sigma;</mo> <mrow> <mi>j</mi> <mo>=</mo> <mn>2</mn> </mrow> <mrow> <mi>n</mi> <mo>+</mo> <mn>1</mn> </mrow> </munderover> <msubsup> <mi>EE</mi> <mrow> <mi>A</mi> <mi>H</mi> <mi>U</mi> </mrow> <mi>j</mi> </msubsup> </mrow> <mi>n</mi> </mfrac> <mo>)</mo> </mrow> </mrow>Wherein, n is the number at very first time interval, and i and j are data collection point, reference value EEavg。
- 10. apparatus for evaluating according to claim 9, it is characterised in that the PAU cold that will be obtained in real time Efficiency is conveyed compared with the reference value, if PAU cold conveying efficiency is less than the reference value, is performed pre- If early warning mechanism, including：The PAU cold conveying efficiency at kth moment is obtained, by it compared with the reference value；If the PAU cold conveying efficiency is less than the reference value, PAU is sent by default system The relatively low early warning of efficiency is conveyed to remind property management personnel to be observed and handled.
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