CN206906035U - A kind of portable air-conditioning efficiency detector - Google Patents

Abstract

The utility model discloses a kind of portable air-conditioning efficiency detector, including casing, the box house is provided with power module, electrical measurement unit, airflow measurement unit, temperature measurement unit and efficiency computing unit；The tank surface is provided with human and machine interface unit, and the air-conditioning energy valid value that the efficiency computing unit calculates is shown in the human and machine interface unit.The utility model light structure, is easy to carry, and installation and measurement process are all without destruction main frame and pipeline, and measurement process, without shutting down, the work on main frame does not influence.The utility model is applicable to the different cold water main units used on the market; excessively low and unduly high efficiency measured value noise can also be filtered; interference is eliminated to the full extent and opens the interference of machine, shutdown stage to energy valid value, reflects main frame average energy valid value as accurately as possible.

Description

A kind of portable air-conditioning efficiency detector

Technical field

It the utility model is related to detection of air-conditioning field, and in particular to a kind of portable air-conditioning efficiency detector.

Background technology

The power consumption of usual central air conditioner system accounts for the 40%-50% of whole building power consumption, and wherein, central air conditioner system is cold The power consumption of water dispenser group accounts for more than the 50% of whole central air conditioner system.For the central air conditioner system run throughout the year, usual one Reach the large-scale screw rod of 500 standard tons (1 standard ton be cold unit made in U.S.A, 1 standard ton=3.516kW works refrigerating capacity) or centrifugal cold water Unit year, operation power charge can reach 1,000,000 RMB, and energy consumption spending is huge.The operational energy efficiency normal range (NR) of air-conditioner host is such as Under：

Air-cooled piston machine 0.8-1.5kW/RT (COP 2.3-4.4)

Water-cooled piston machine 0.6-1.0kW/RT (COP 3.5-5.9)

Water-cooling screw rod machine 0.4-0.80kW/RT (COP 4.4-8.8)

Water Cooled Centrifugal Machine 0.4-0.75kW/RT (COP 4.7-8.8)

Variable frequency centrifuge 0.25-0.75kW/RT (COP 4.7-5.9)

Under general air conditioning condition, the specified efficiency of water cooling cold water cooling main frame is 0.60 to (1TON between 0.8kW/TON =1USTR cold units made in U.S.A are with metric unit reduction formula：3.516KW=1USTR), but actual water cooled chiller is transported Row fluctuates in the range of such a very big efficiencies of 0.25-1.0kW/TON.Run electricity=accumulative refrigerating capacity × average energy Effect, in the case of accumulative demand refrigerating capacity identical, the height of the efficiency that is averaged determines the height of equipment operating cost, and equipment Actual motion performance is often due to service condition and the fluctuation of corrective maintenance state efficiency and deviation range are very big.So inspection in real time Survey and diagnose the performance efficiency of unit for optimization and energy saving highly significant.

The efficiency detection method at handpiece Water Chilling Units scene is to record out parameters with different gauge table detections at present：Current Amount, water temperature angle value, amount of equipment power consumption etc., then by manually and by computer combined data being calculated.Also without special Equipment or self-contained unit carry out the performance efficiency of real-time diagnosis water cooled chiller, typical handpiece Water Chilling Units efficiency diagnosis point at present Analysis two kinds of ways be：First, analysis and evaluation is carried out to the operational factor of equipment by experienced expert engineer, drawn coarse Empirical analysis result；2nd, some building automation integrated systems by the instrumentations such as sensor carry out on-line checking cold and Electricity, although can also obtain the result of monitoring device efficiency, efficiency real-time diagnosis is not carried out to handpiece Water Chilling Units, meanwhile, by Made in the considerably less of the automatic building control system and normal use for possessing this function on the market, and because automatic building control system is huge Valency is high, belongs to System Integration Engineering.The solution that the utility model differentiates as a kind of diagnosis of performance efficiency, has data The characteristics of convenient sources, high assessment result reliability.

Utility model content

The technical problems to be solved in the utility model is the market vacancy for existing central air conditioner energy efficiency survey tool, public A kind of Portable type central air-conditioning energy efficiency monitor has been opened, has been realized to the energy valid value of general various brands central air-conditioning cold water main unit Measurement and performance efficiency diagnosis differentiate, and possess unit conversion, the additional functions such as curve is shown, historical query.

To achieve the above object, the technical scheme that the utility model is taken is as follows：

A kind of portable air-conditioning efficiency detector, including casing, it is characterised in that：The box house is provided with power supply mould Block, electrical measurement unit, airflow measurement unit, temperature measurement unit and efficiency computing unit, the electrical measurement unit, flow Measuring unit and temperature measurement unit are attached by signal wire and the efficiency computing unit respectively；The tank surface is set Human and machine interface unit is equipped with, the air-conditioning energy valid value that the efficiency computing unit calculates is shown in the human and machine interface unit.

Further, in addition to current transformer, probe for measuring flow and temperature sensor, the current transformer, stream Measurement is popped one's head in and temperature sensor passes through removably and electrical measurement unit, airflow measurement unit and the temperature respectively Measuring unit is attached.

Further, the current transformer, probe for measuring flow and temperature sensor pass through aviation plug and institute respectively Electrical measurement unit, airflow measurement unit and temperature measurement unit is stated to be attached.

Further, the side of the casing is provided with handle, the efficiency detector without using when can make Suitcase, it is convenient for carrying and moves.

Further, the current transformer is split core type current transformer, and the probe for measuring flow is SMD flow Sensor, the temperature sensor are SMD platinum resistance temperature sensor.

Further, the efficiency computing unit sets the threshold value of flow, temperature and electricity, when flow, temperature or electricity When the change of amount is too fast, can automatic rejection related data, do not charge in the calculating of average air-conditioning energy valid value.

Further, the human and machine interface unit is also equipped with air-conditioning energy valid value Conversion of measurement unit, curve is checked, historical record is looked into Ask the function of being checked with auxiliary parameter.

Further, the airflow measurement unit includes supersonic flow measuring device

Relative to prior art, the utility model achieves beneficial technique effect：

(1) the air-conditioning efficiency detector is highly integrated, and whole measuring instrument is light, is easy to carry about with one, and installs and measure Process is all without destruction main frame and pipeline.

(2) the air-conditioning efficiency detector installs airflow measurement unit and Inlet and outlet water temperature measurement unit in measurement process Shi Wuxu is shut down, and after being measured, can be removed quickly, whole process is convenient, fast, accomplishes the no shadow of work to main frame Ring.

(3) the efficiency computing unit of the air-conditioning efficiency detector can be filtered excessively low and excessively using the means of statistics High efficiency measured value noise, interference is eliminated to the full extent and opens the interference of machine, shutdown stage to energy valid value, it is as smart as possible Really reflect main frame average energy valid value.

(4) the air-conditioning efficiency detector is applicable to the different cold water main units used on the market, and measurement process is simply fast Victory, the energy valid value and efficiency evaluation result of cold water main unit can be immediately arrived at.

Brief description of the drawings

Fig. 1 is the structural representation of air-conditioning efficiency detector.

Fig. 2 is the theory diagram of air-conditioning efficiency detector.

Fig. 3 is the Site Detection arrangement block diagram of air-conditioning efficiency detector.

Fig. 4 is the workflow diagram of air-conditioning efficiency detector.

Fig. 5 is the overhaul flow chart of air-conditioning efficiency detector.

Embodiment

In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, with reference to embodiments to this Utility model is further elaborated, but the scope of the requires of the utility model protection is not limited to following specific implementations Example.

Referring to Fig. 1, portable air-conditioning efficiency detector disclosed in the present embodiment includes casing 10, is set inside the casing 10 It is equipped with power module 9, electrical measurement unit 4, airflow measurement unit 5, temperature measurement unit 6 and efficiency computing unit 8, the electricity Phasor measurement unit 4, airflow measurement unit 5 and temperature measurement unit 6 are carried out by signal wire and the efficiency computing unit 8 respectively Connection；The tank surface is provided with human and machine interface unit 7, and the air-conditioning energy valid value that the efficiency computing unit 8 calculates is shown In the human and machine interface unit 7.Current transformer 1, probe for measuring flow 2 and temperature sensor 3 pass through detachable side respectively Formula is attached with the electrical measurement unit 4, airflow measurement unit 5 and temperature measurement unit 6.

The utility model has fully demonstrated operation and the convenience carried.In view of the installation of the sensor in actually measuring Dismounting, the connection of measuring apparatus, measurement process are required for as far as possible simply and conveniently, and whole instrument needs to have portability Demand, to be easy to carry about with one and move, flow measurement of the present utility model is using SMD flow sensor, whole sensing The installation of device does not have to get angry and freeze, without destroying pipeline water route, even without main shut-down system, it is only necessary to by the material of pipeline, interior The parameters such as external diameter, fluid media (medium) are input in ultrasonic sensor, can calculate mounting distance automatically, will be super according to the distance The upstream and downstream sensing paster of acoustic wave flow sensor is fitted in above pipeline.

Temperature survey uses SMD platinum resistance temperature sensor, only with by temperature sensor respectively with chilled water Inlet and outlet water Pipeline posts, and is fastened admittedly with stirrup, and whole process does not have to get angry and freeze and can install.

The measurement of electricity uses special hook type current transformer, because the electric power incoming line of cold water main unit is all to use hexagonal Shape screw fastens installation, if using fixed current transformer, makes use of momentum and necessarily takes electric power incoming line apart, through the electric current Transformer, it can so cause efficiency low, and main frame also has to shut down.And in some occasions, due to main frame age ratio More remote, electric power incoming line fastening screw has different degrees of corrosion, and dismounting inlet wire can be extremely difficult or can not completed.Using special Hook type current transformer can easily tackle the situation, and split core type current transformer can be with folding, it is only necessary to by Current Mutual Inductance Device opens opening, vises electric power incoming line.Whole process is easily simple, it is not necessary to removes screw, it is not necessary to main shut-down system.

Whole portable efficiency detector uses suitcase-type structure, and man-machine interface is on the front panel of cabinet.Other Fixed apparatus, such as：Ultrasonic flow sensor main part, three-phase intelligent electricity quantity module, efficiency calculate CPU module, set The part such as stand-by power source is all placed on cabinet inside, makes full use of enclosure interior.

The measurement sensor probe apparatus of the other parts of this efficiency detector, predominantly activity, its length of cable is longer, Need to install at the scene on the relevant device of air-conditioner host in measurement, as three-phase current electricity transformer, ultrasonic flow pass Upstream and downstream inductive probe part, the chilled water Inlet and outlet water temp probe part of sensor.Detected when not in use with efficiency these parts Instrument is released state, needs to be connected with efficiency detecting instrument when in use.These probe apparatus and efficiency detector Coupling part use quick aviation plug, the connection of whole sensor is all without instruments such as screwdriver, spanners, and whole process is using inserting Hair style connects, and realizes quickly dismounting, is greatly improved operating efficiency.

Whole Portable type central air-conditioning cold water main unit efficiency detecting instrument uses cabinet design, up pacifies with two flank side surfaces Equipped with rubber handle, without using when, a suitcase can be used as, be convenient for carrying and move.When needing measurement, only In the joint corresponding to the plug insertion lower box by probe, each sensor probe is partially installed on corresponding position, such as Shown in Fig. 3 detection arrangement figures.

Except central air conditioner main machine efficiency measures function, the also built-in some other miscellaneous functions of the measuring instrument device.Behaviour Making personnel can be operated or be checked in man-machine interface, and such as Conversion of measurement unit, curve is checked, historical record is inquired about, checks it The function of his auxiliary parameter.

Conversion of measurement unit will can be converted mutually with the two of kW/TON and kW/kW kinds of efficiency units, facilitate operating personnel Index known to oneself is called to carry out efficiency measurement.

Curve look facility is to check energy valid value, refrigerating capacity, power consumption, temperature, the trend of flow in graph form, more Add the variable condition and trend of these parameters in the display measuring section of visual pattern.When these parameters exceed threshold value, it is in During abnormality, also can clearly it be identified with red on curve.

Historical record is inquired about, and can both support to input the time of starting and ending, the measurement inquired about within the period is gone through The Records of the Historian is recorded, and can also be recalled from currently, the historical record of inquiry several times recently.And support leading with forms such as xls, cvs Go out, the file after export can be stored in USB flash disk, achieved or printed out.

Other auxiliary parameters check including measure inlet/outlet temperature, flow, three-phase current/voltage, frequency, have Work(power, reactive power, power factor, refrigerating capacity etc., operating personnel can have more complete by these parameters to Host Status The understanding in face.

Referring to Fig. 3-5, operating process of the present utility model is as follows：

Each sensor and efficiency detector are attached first, it uses quick plug, by them according to efficiency instrument machine Text prompt on case is docked one by one to be plugged.Before starting to detect main frame, metering check and correction need to be carried out to efficiency detector, Specifically have：(1) temperature sensor is calibrated, two temperature sensors and tube wall are bonded it is close, sensor and tube wall Heat conductive silica gel is smeared on veneer, whether the temperature reading of two temperature sensors of observation is consistent on portable efficiency detector, Whether consistent with the data on the panel of main frame contrast the temperature reading, if being all consistent, prove that temperature sensor works Normally.(2) the flow sensing probe of ultrasonic flow sensor is fitted on tube wall, there is water flowing in pipe, adjustment sensing is visited The position of head, make two probes in the same horizontal plane, between be mutually separated with 5-8cm distance, observe supersonic flow The instrument face plate of quantity sensor, there is numerical value then to illustrate that ultrasonic sensor is working properly.(3) by three-phase split core type current transformer point The three-way power inlet wire of main frame is not vised, whether observe in efficiency detector man-machine interface has electric current to show, if showing, with The operating current of main frame is contrasted, and numerical value unanimously then proves that electric power detection module is normal.

If these are all normal, the detection work of next step can be started, if a certain be adjusted still can not be just Often work, then just need to change or overhaul the detection unit, and repeat above-mentioned proof-reading, until these detection sensors are all just Often untill work.

These sensors are each installed respectively, temp probe is separately mounted to the freezing of central air-conditioning cold water main unit , it is necessary to notice that fitting is close on the water wall of water inlet/outlet, centre is coated with heat conductive silica gel, and with clip by sensor and pipeline Fix, temperature sensing portion is installation.Then by the inner and outer diameter of chilled water pipeline, tube wall material, fluid media (medium) etc. Inputted or selected one by one in the menu of ultrasonic flow sensor, ultrasonic meter can calculate a locating distance automatically From the mounting distance that, the distance is exactly ultrasonic flow sensor upstream probe and downstream probe, by two probes according to this away from From on chilled water tube wall, installation requirement is similar with temperature sensor, it is necessary to be bonded close, contact of the tube wall with sensor Face is coated with supporting contact agent, and two probes need to be arranged on same horizontal surface.Menu item selection in instrument is looked into Signal intensity is seen, if signal strength values>60, then the ultrasonic flow sensor can with normal work, if being not reaching to 60, Then need to adjust installation site, or pipeline outer wall of slightly polishing.The measurement sensor installation of electricity is simple, it is only necessary to by pincerlike electricity The three phase mains inlet wire of the upper main frame of current transformer pincers, but it is noted that correct three phase mains inlet wire must be found, It is that whole air conditioner cold water main unit is powered that the inlet wire, which necessarily needs,.

After installing, you can efficiency measurement work is carried out, detection time length is inputted on the interface of efficiency detector, Typically according to different main frames, detection time is generally -2 hours 0.5 hour, it is proposed that not below 0.5 hour, otherwise sample was inclined It is few, it is inaccurate to be likely to result in detection.After have input time span, start button is clicked on, efficiency detector automatically begins to run Efficiency is detected, without personnel's manual intervention, all detector automatic runnings during this.

After detection, efficiency detector man-machine interface can prompt detection to complete, and all parameters in detection process are all Store in efficiency detector, and final energy valid value can be shown, the energy valid value is average efficiency.If necessary under different operating modes Efficiency detection, then need floor data being manually entered into efficiency detector, these data include outdoor environment humiture, Heat exchanger pressure differential, cooling water flow, cooling water disengaging coolant-temperature gage, after inputting these parameters, efficiency instrument can form different operating modes Energy Efficiency Analysis table and efficiency the diagnostic result analysis of point.

Schematic diagram of the present utility model is shown in Fig. 2.Instantaneous stream on probe for measuring flow measurement handpiece Water Chilling Units chilled water pipeline Amount (L), temperature measurement unit obtain chilled water inflow temperature (T1), chilled water water outlet by SMD platinum sensor measurement When temperature (T2), calculating the instantaneous refrigerating capacity of large-size air conditioning handpiece Water Chilling Units, then measurement obtained by the integrating of instantaneous refrigerating capacity Between overall refrigerating effect in section.As shown in figure 4, its Computing Principle is as follows:

ΔT_{Instantaneously}=(T1_{Instantaneously}-T2_{Instantaneously})(℃)；

Q_{Instantaneously}=C*L_{Instantaneously}*ΔT_{Instantaneously}(kW)=C*L_{Instantaneously}*(T1_{Instantaneously}-T2_{Instantaneously})；

Q_Always=∑ Q_{Instantaneously}

The specific heat 4.1868kW*S/ (kG* DEG C) of C-water；

L_{Instantaneously}- chilled water instantaneous delivery L/S (liter/second)；

ΔT_{Instantaneously}- chilled water Inlet and outlet water transient temperature is poor (DEG C)；

T1_{Instantaneously}- chilled water instant water coming-in temperature (DEG C)；

Q_{Instantaneously}The instantaneous refrigerating capacity of-main frame (kW)；

Q_Always- main frame overall refrigerating effect (kW)；

Main frame electrical measurement unit is obtained main frame and existed by three-phase hook type current transformer and three-phase intelligent voltameter, measurement Power consumption (P) is used in this time.So as to calculate the energy valid value of central air conditioner main machine (refrigerating capacity/power consumption).

P_Always=P_T2-P_T1

P_T1Electricity electric degree (kWh) when-measurement starts；

P_T2Electricity electric degree (kWh) at the end of-measurement；

P_Always- total electricity consumption (kWh)；

The average efficiency E of central air conditioner main machine_{It is average}Calculation formula is as follows：

E_{It is average}=P_Always/Q_Always(kW/kW)；

3.516KW=1TON (USTR cold units made in U.S.A)；

, can also be by the coefficient of refrigerating performance value in units of kW/kW or the U.S. being converted into units of kW/TON by conversion System can valid value.

Handpiece Water Chilling Units performance efficiency diagnoses computational discrimination method：

The present invention defines performance efficiency index E % to differentiate the quality of handpiece Water Chilling Units equipment performance, and E% is based on the unit Design condition with respect to nominal parameter performance.

The performance efficiency index E %=E of water cooling cold water main unit_{Desired reference}/E_{It is actual}* 100%

E_{Desired reference}----water cooling cold water main unit is preferable to calculate energy valid value (CPLV), E_{Desired reference}It is the rated designs ginseng with refrigeration machine On the basis of number, according to the operating condition condition of reality, deviation is calculated according to thermodynamics perfect gas coefficient of refrigerating performance formula and drawn, In normal detection condition range, E_{Desired reference}Reflection be water cooling cold water main unit optimum state and assume with ideal conditions change Unanimously.When measurement data is normal, E_{Desired reference}<E_{It is actually detected}, so, E% high low energy intuitively reflects the performance quality of equipment.

E_{It is actually detected}----by efficiency data monitoring obtains actually detected value；

Calculated examples explanation：

One detected water cooled chiller, the working condition of rated designs：Chilled water goes out/return water temperature 7 DEG C/12 ℃；32 DEG C/37 DEG C of cooling water inlet/outlet temperature；Refrigerating capacity is 500USTR/1758KW, input power 325KW；It is actually detected Three groups of data：

A, chilled water goes out/8 DEG C/11 DEG C of return water temperature, 32 DEG C/35 DEG C of cooling water inlet/outlet temperature, efficiency measured value 0.62KW/TON

B, chilled water goes out/8 DEG C/12 DEG C of return water temperature, 26 DEG C/30 DEG C of cooling water inlet/outlet temperature, efficiency measured value 0.60KW/TON

C, chilled water goes out/9 DEG C/12 DEG C of return water temperature, 25 DEG C/28 DEG C of cooling water inlet/outlet temperature, efficiency measured value 0.55KW/TON

E_{It is specified}----unit nominal parameter value, refrigerating capacity and power consumption parameter meter can be used when nameplate parameter must not immediately arrive at Obtain.

COP_{It is specified}----unit nominal parameter value, 3.516/COP_{It is specified}=E_{It is specified}

K_{It is preferable specified}The preferable coefficient of refrigerating performance of ----unit declared working condition, according to thermodynamic principles, preferable coefficient of refrigerating performance formula For：K_{It is preferable specified}=Te/ (Tc-Te)

By common design condition：The small temperature difference of evaporator heat exchange during actual motion is 2 DEG C, condenser heat exchange during operation The small temperature difference is 3 DEG C, then when design rated condition is：Chilled water leaving water temperature is 7 DEG C, when cooling water leaving water temperature is 37 DEG C, Te Design=273+ (7-2)=278K；Tc designs=273+ (37+3)=313K.

K_{It is preferable specified}=278/35=7.94

η_{Refrigerating efficiency}----unit refrigerating efficiency value, η_{Refrigerating efficiency}=COP_{It is specified}/K_{It is preferable specified}The machine η is calculated_{Refrigerating efficiency}=0.68.

The relative refrigerating efficiency η of this equipment is calculated by the nominal parameter of upper table_{Refrigerating efficiency}, give tacit consent in normally measurement model The relative refrigerating efficiency η of operating point this equipment enclosed_{Refrigerating efficiency}It is constant, draw the E% of following actual measurement efficiency.

K_{Actual condition}The preferable coefficient of refrigerating performance of ----unit declared working condition, according to thermodynamic principles, preferable coefficient of refrigerating performance formula For：K_{Actual condition}=Te/ (Tc-Te)

By common design condition：The small temperature difference of evaporator heat exchange during actual motion is 2 DEG C, condenser heat exchange during operation The small temperature difference is 3 DEG C, calculates the K of tri- operating modes of A, B, C respectively_{Actual condition}

COP_{Desired reference}----unit difference operating mode desired reference COP values, COP_{Desired reference}=K_{Actual condition}*η_{Refrigerating efficiency}

E_{Desired reference}----unit difference operating mode desired reference efficiency E values, 3.516/COP_{Desired reference}=E_{Desired reference}

E%---- energy efficiency indexes, E%=E_{Desired reference}/E_{It is actually detected}* 100%

Another problem to be solved in the utility model is the precision processing to actually detected average energy valid value.In reality With and measurement during, the electricity consumption of main frame and refrigeration are all a continually changing processes, are become with cold demand, load The difference of the conditions such as change, external environment humiture, the efficiency of cold water main unit are actually to be in a state constantly changed, It is also a continually changing unstable numerical value, its reference significance and reality thus to cause the real-time energy efficiency value that measurement obtains Purposes is limited, also result in the inaccuracy of average energy valid value.

And during main frame loading, unloading, or during adjacent main frame starting mode of pump, operation, cause water Unexpected increasing or power load mutation.Because the change of temperature is a more gentle process, the shape of suddenly change State can cause the energy valid value that is calculated by E=P/Q excessive or too small, if by the part can valid value count, with reality Average energy valid value compared to a certain degree of distortion can be caused.Built-in algorithm, sets flow, temperature in efficiency computing unit Degree, the threshold value of electricity, when the rate of change of flow, temperature or electricity is too fast, has exceeded the threshold value of these physical quantitys, computing module Automatically can not charged among the calculating of average efficiency by these data otherwise processeds.Only when these measurement parameters return to threshold value Under, in the state in normal work, just it is included among the measurement of average efficiency.

The announcement and teaching of book according to the above description, the utility model those skilled in the art can also be to above-mentioned realities The mode of applying is changed and changed.Therefore, the utility model is not limited to embodiment disclosed and described above, right Some modifications and changes of utility model should also be as falling into scope of the claims of the present utility model.In addition, although Some specific terms are used in this specification, but these terms are merely for convenience of description, utility model do not formed Any restrictions.

Claims (6)

1. a kind of portable air-conditioning efficiency detector, including casing, it is characterised in that：The box house is provided with power supply mould Block, electrical measurement unit, airflow measurement unit, temperature measurement unit and efficiency computing unit, the electrical measurement unit, flow Measuring unit and temperature measurement unit are attached by signal wire and the efficiency computing unit respectively；The tank surface is set Human and machine interface unit is equipped with, the air-conditioning energy valid value that the efficiency computing unit calculates is shown in the human and machine interface unit； Also include current transformer, probe for measuring flow and temperature sensor, the current transformer, probe for measuring flow and temperature pass Sensor is attached by removably and electrical measurement unit, airflow measurement unit and the temperature measurement unit respectively； The side of the casing is provided with handle, the efficiency detector without using when can make suitcase, be convenient for carrying and remove Move.

A kind of 2. portable air-conditioning efficiency detector according to claim 1, it is characterised in that：The current transformer, Probe for measuring flow and temperature sensor pass through aviation plug and electrical measurement unit, airflow measurement unit and the temperature respectively Measuring unit is attached.

A kind of 3. portable air-conditioning efficiency detector according to claim 1, it is characterised in that：The current transformer is Split core type current transformer, the probe for measuring flow are SMD flow sensor, and the temperature sensor is SMD platinum electricity Hinder temperature sensor.

A kind of 4. portable air-conditioning efficiency detector according to claim 1, it is characterised in that：The efficiency computing unit Set the threshold value of flow, temperature and electricity, when the change of flow, temperature or electricity is too fast, can automatic rejection related data, Do not charge in the calculating of average air-conditioning energy valid value.

A kind of 5. portable air-conditioning efficiency detector according to claim 1, it is characterised in that：The human and machine interface unit It is also equipped with air-conditioning energy valid value Conversion of measurement unit, the function that curve is checked, historical record is inquired about and auxiliary parameter is checked.

A kind of 6. portable air-conditioning efficiency detector according to claim any one of 1-5, it is characterised in that：The flow Measuring unit includes supersonic flow measuring device.