CN101241016A - Fixed flux temperature differential -type central air-conditioning fee counting method and charging device - Google Patents
Fixed flux temperature differential -type central air-conditioning fee counting method and charging device Download PDFInfo
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Abstract
The invention relates to a central air-conditioning billing method and billing devices. The constant flow temperature-difference type central air-conditioning billing method is that temperature sensors are installed on billing units users air-conditioning import and export for various billing units of the same central air-conditioning billing system, and the flow rate of the cold / heat transfer medium is set a fixed parameter, in the context of having flow rate and air-conditioning import and export temperature-difference reaching starting values, current users air-conditioning energy consumption is computed using the heat calculating formula of fixed flow constant, and as the accounting basis of the billing unit users air-conditioning. The invention abandons traditional various flow meters, and detects flow switch signal, uses factors of temperature-difference, fixed flow parameters and time, and obtains the consumption calculating energy of the computation region through integrating, the billing method is accurate and reliable, which leads to the central air-conditioning billing on demand and volume, through the billing device, the measurement data is collected, transmitted accurately and managed scientifically.
Description
(1) technical field:
The present invention relates to a kind of central air conditioner charging method and message accounting, particularly relate to a kind of temperature difference type charging method and message accounting of central air conditioner of constant flow water system.
(2) background technology:
Raising day by day along with people's living standard, central air conditioner is generally used, because central air conditioner tradition charging way is multifarious, though they have solved the charging problem of central air conditioner user under different behaviours in service, central air conditioner metering centralized management and continuous data hold function have been realized, but metering method also exists limitation to a certain degree, do not have abundant realization to charge as required and pass through that careful science calculates charging according to quantity, be unfavorable for that the central air conditioner user is in line with the more positive reduction energy resource consumption of economy principle, transparent consumption.Chinese invention patent application 200510034777.5 (publication number CN 1831502A, open day on September 13rd, 2006) discloses a kind of calorimeter with temp sensor, is made up of calculating instrument and temperature sensor.This calorimeter is applied to the heat metering field, measures the indoor heat consumption of user when particularly suitable adopts household metering.This calorimeter need not measured the hot water flow in the radiator fin, only needs to measure that heating radiator (pipe) group is advanced, return water temperature n, and n and environment temperature Tn use thermal technology's theory, can calculate the heat of using of explicit user also by built-in computing formula and operation program.The absolute value of the heating load that the just user that it is measured uses, for how realizing Split Charging, right to make decision, power to make decision all are covert unknown numbers for the public, and in other words, it does not fundamentally solve heating charge science, reasonable, fair problem.
Chinese invention patent application 03150444.2 (discloses day on February 23rd, 2005, publication number CN1584527A) a kind of central air conditioner charging automatic control system is disclosed, it comprises and is installed in the zone of will chargeing: a) working time sensor, be used to add up accumulative total service time of central air conditioner; B) be installed in water temperature sensor and flowmeter on the water-main; C) be installed in temperature sensor on the advancing of user's fan coil distributive pipe, the water return pipeline respectively, utilize the temperature difference of water inlet, backwater to come the loss of calculating energy; C) be installed in flowmeter on the inlet channel of user's fan coil distributive pipe, be used for the size of the chilled water/hot water flow of measurement flow warp; D) the pulse ammeter on each low-voltage distribution loop; The said equipment links to each other with the input-output apparatus of controller, forms Fee Schedule by central controlling computer image data.Flow sensor has increased the system architecture cost, does not also provide a justice, rational billing solution from supvr and consumer's angle in addition.
Present central air conditioner charging method does not fundamentally solve as required, charges according to quantity, has very big drawback, is unfavorable for saving energy and reduce the cost, and is unfavorable for the long term growth of environmental protection and society.Therefore, implementing central air conditioner charges extremely urgent according to quantity, as required.
(3) summary of the invention:
Goal of the invention:
The present invention is directed to the prior art deficiency, a kind of fixed flux temperature differential-type central air conditioner charging method and message accounting are proposed, the various flowmeter of abandoning tradition, employing detects flow switch signal, utilize the temperature difference, constant flow parameter and several key elements of time, integration obtains the consumption calculations energy of this metering region, what charging method of the present invention obtained works as energy accurately and reliably, realize central air conditioner as required, charge according to quantity, " accurately, rationally, convenient ", and realize accurate collection, transmission and the scientific management of continuous data by message accounting.
Technical scheme:
Fixed flux temperature differential-type central air conditioner charging method of the present invention, each Charging Detail Record unit for same central air conditioner, at Charging Detail Record unit user's air-conditioning import and export place difference mounting temperature sensor, the flow that the cold/heat transferred medium of central air conditioner is set is a preset parameter, gather flow signal by flow switch, having under the situation of flow, whether the temperature difference of judging the air-conditioning import and export reaches a predefined initial value, reach in the temperature difference under the situation of initial value, utilize the heat Calculation formula under the constant flow constant state
Calculate the energy that active user's air-conditioning consumes, and work as energy as what the system air conditioner user chargeed, as the charging basis of user's air-conditioning of each Charging Detail Record unit, in the formula with this
Q---the equivalent heat that discharges or absorb, J of unit or Wh
⊿ h---poor at the enthalpy that advances water under the return water temperature, the J/kg of unit
τ---the time, h
K---under constant flow water system the constant value of an appointment.
Central air conditioner charging method of the present invention, be mainly used in the situation of the central air conditioner system operation of metering constant flow, design factor according to the different model caliber, in conjunction with the time of flow identification signal, the temperature difference of Inlet and outlet water, calculate the calculating energy that this central air conditioner Charging Detail Record unit consumes, and always calculate the expense that proportion is shared central air conditioner in the energy in central air conditioner system with this calculating energy, realize the equivalent energy meter charging method of central air conditioner.Described fixed flux temperature differential-type central air conditioner charging method is not having not produce the charging value under the situation of flow signal; Do not reach in the temperature difference of user's air-conditioning import and export under the situation of predetermined initial value, do not produce the charging value.And can monitor the situation of paying the fees of air conditioner user, under the situation of subscriber arrearage, close the user cold/the heat transferred medium pipeline valve of registering one's residence, to realize the arrearage disable function.
It calculates principle (the heat Calculation formula of application standard):
In the formula: Q---the equivalent heat that discharges or absorb, J or Wh
The mass rate of qm---water, kg/h
The volumetric flow rate of qv---water, m
3/ h
The density of ρ---water, kg/m
3
⊿ h---poor at the enthalpy that advances water under the return water temperature, J/kg
τ---the time, h
Because the flow rate in the non-constant flow water system is a variable, is dynamic value, therefore the accuracy of gathering is subject to disturb, and whether output valve is difficult for judgement and has problems.And at constant flow water system, by adopting accurate pairing temperature sensor, flow detection switch and computing unit accurately, flow rate all is the definite value that presets, and has therefore simplified computing method, can specified constant k and order to different constant flow water systems
k＝q
m＝ρq
v (2)
Then formula (1) can be changed into: k is design factor (constant)
Be applied to the air-conditioning system of constant flow, at a metering region with certain limit.By the flow that central air conditioner is set is a preset parameter, and the return water temperature that advances by accurate this air-conditioning of collection obtains the temperature difference.
The present invention utilizes the elementary heat mechanics principle, has proposed the metering method of a reliable air conditioning charging.The principle of using in the scheme is each metering units for same system.Adopt that this scheme obtains when energy accurately and reliably, and hardware device is with respect to traditional measurement instrument, simple and reliable stable, easy to maintenance, maintenance cost is low.
A kind of central air conditioner message accounting of realizing described fixed flux temperature differential-type central air conditioner charging method, contain a core calculations unit, this core calculations unit comprises the core CPU module, storage module during prison, communication module and power module, power module provides working power for message accounting, the control interface of storage module during prison, data-interface and read-write synchronous clock interface connect the corresponding control interface or the I/O interface of core CPU module respectively, the serial communication interface of CPU connects the uplink communication module in the core CPU module, connect host computer by the uplink communication module, described core calculations unit also contains into, the leaving water temperature acquisition module, advance, outside integrated digital temperature sensor or the analog temperature sensor of connecting of leaving water temperature acquisition module, advance, the output terminal of leaving water temperature acquisition module connects two the corresponding I/O interfaces of CPU in the core CPU module respectively, collection is advanced, leaving water temperature signal, constant flow switching signal adopt the acquiescence deterministic model or by advancing, the outlet temperature difference judges that flow is definite value or zero.
Described central air conditioner message accounting, the core calculations unit contains a flow switching signal identification module, the corresponding corresponding I/O interface that connects CPU in the core CPU module of the output terminal of flow switch signal identification module (CHECK2) is realized the collection of flow switch signal; The flow switch signal collecting unit can be cancelled and adopt default mode.
Described central air conditioner message accounting, message accounting contains valve control/detection module, to realize arrearage forbidding and working service; Valve control/detection module adopts optocoupler 521 to realize the strong and weak electricity isolation, the input end of valve control/detection module connects the valve working power supply, and the isolation detection output terminal (CHECK1) of valve control/detection module connects the I/O interface of CPU in the core CPU module; The input control end (CONT1) of valve control/detection module connects one group of I/O interface of CPU, the control output end of valve control/detection module (OUT1) control linkage by-pass valve control work ring current.
Described central air conditioner message accounting, uplink communication module adopt RS-485 bus communication mode, perhaps adopt CAN bus or BUS bus communication mode, perhaps adopt wireless communication mode.
Described central air conditioner message accounting, the core CPU module is provided with the display module interface, and the core calculations unit is connected with on-the-spot display module by the display module interface, realizes that Information Field shows.
Positive beneficial effect of the present invention:
1, central air conditioner charging method of the present invention and charging method, the various flowmeter of abandoning tradition, and adopted water flow switch that flow signal is detected, accurate measurement is reliable, can satisfy the customer requirement of " as required use, charge according to quantity ", lower the influence of factors such as air-conditioning water quality is bad greatly metering outfit metering result, reduce equipment cost and maintenance cost, had fabulous application value.Promptly having reduced cost has and has improved product competitiveness, can promote user's reasonable consumption again, and energy savings reduces the air-conditioning equipment load, prolongs service life of equipment.
2, each metering units preparation one this message accounting of cover of the present invention, each metering units size can flexible configuration, message accounting comprises that basic modules such as CPU module, when prison storage module, uplink communication module and power module form, and can realize that metrical information forever preserves; Reasonable in design, use, easy to maintenance is installed simply; Be provided with the uplink communication interface and be connected with host computer, can be uploaded to the centralized automatic meter-reading management system, charging is accurate, the metering data information holding time is long.
3, device of the invention process passes through the porch preparation electrically operated valve at the central air conditioner of each metering units, can realize the arrearage disable function: directly assign forbidding and close this porch electrically operated valve by administrative center's computer, cut off the center air-condition circle water of this metering units, thereby realize Long-distance Control.Valve control/detection module control mode can adopt schemes such as controllable silicon, relay.
(4) description of drawings:
Fig. 1: message accounting unit module arrangement plan of the present invention
Fig. 2: charging method work-based logic figure of the present invention
Fig. 3: module diagram is formed in message accounting core calculations of the present invention unit
Fig. 4: message accounting core CPU modular circuit schematic diagram of the present invention
Fig. 5: storage module circuit theory diagrams when message accounting of the present invention is supervised
Fig. 6: message accounting valve control/detection module circuit theory diagrams of the present invention
Fig. 7: message accounting communication module circuit theory diagrams of the present invention
Fig. 8: message accounting power module of the present invention
Fig. 9: message accounting Inlet and outlet water temperature collect module of the present invention
Figure 10: message accounting display interface module of the present invention
Figure 11: message accounting flow switch signal identification module of the present invention
Figure 12: two of message accounting valve control/detection module circuit theory diagrams of the present invention
Figure 13: message accounting BUS bus uplink communication module of the present invention
Figure 14: message accounting CAN bus uplink communication module of the present invention
Figure 15: charging method of the present invention and device are used synoptic diagram one
Figure 16: message accounting of the present invention is used synoptic diagram two
Figure 17: charging method of the present invention and device are used synoptic diagram three
(5) embodiment:
Embodiment one: referring to Fig. 1, Fig. 2, fixed flux temperature differential-type central air conditioner charging method of the present invention, each Charging Detail Record unit for same central air conditioner system, air-conditioning the Charging Detail Record unit user is cold/heat transferred medium pipeline import and export place mounting temperature sensor respectively, specifically realize the charging of central air conditioner by following step
(1) cold/heat Calculation coefficient that central air conditioner at first is set is certain value k, and adopt flow switch or according to advancing, the outlet temperature difference judge air-conditioning cold/whether flow is arranged in the heat transferred medium pipeline, (2) user's air-conditioning cold/have under the situation of flow in the heat transferred medium pipeline, judge that air-conditioning advances, whether the temperature difference of outlet reaches a predefined initial value, (3) advance at air-conditioning, the outlet temperature difference reaches under the situation of initial value, obtaining correspondence advances, the enthalpy Cha ⊿ h of medium under the outlet temperature, then the medium enthalpy difference ⊿ h that flows through and the sum of products time of coefficient k are carried out integration, cumulative calculation goes out the calculating energy that Charging Detail Record unit user air-conditioning discharges or absorbs, (4) calculating energy that discharges or absorb with described Charging Detail Record unit user air-conditioning is as the charging basis of this Charging Detail Record unit, always calculate the expense that proportion is shared central air conditioner in the energy with this calculating energy in central air conditioner system, realize that the equivalent energy of central air conditioner charges.
Wherein definite value k is one by the field measurement flow of metering object or with the constant determined of nominal flow rate of metering object; The span of the charging initial value that user's air-conditioning import and export temperature difference is predetermined does not reach in the temperature difference of user's air-conditioning import and export under the situation of predetermined initial value between 0.1 degree centigrade to 2.0 degrees centigrade, does not produce the charging value; User's air-conditioning cold/do not have in the heat transferred medium pipeline not charge under the situation of flow.
Embodiment two: referring to Fig. 1, Fig. 2.Present embodiment fixed flux temperature differential-type central air conditioner charging method, by a message accounting situation of paying the fees of air conditioner user is monitored, what they were different with embodiment one is: monitor under the situation of subscriber arrearage by the valve control/detection module of message accounting close the user cold/the heat transferred medium pipeline valve of registering one's residence, to realize the arrearage disable function.
Embodiment three: present embodiment is the message accounting specific embodiments.Fig. 1 is a message accounting unit module arrangement plan, comprises a core calculations unit, water-in and water-out temperature collecting device and flow signal acquisition device; Fig. 3 is for forming each functional module of message accounting core calculations unit, storage module, flow switch signal identification module, Inlet and outlet water temperature collect module, communication module, power module when including core CPU module, valve control/detection module, prison, display interface module.
Core CPU modular circuit principle schematic is seen Fig. 4, storage module circuit theory synoptic diagram when Fig. 5 is prison, and Fig. 7 is a kind of embodiment of communication module, wherein U1 is CPU, memory when U2 is prison, U3 is a uplink communication RS485 bus communication chip.Central processing unit in the core CPU module (CPU) can adopt 89S52, AT89C52, P89C54BP, P89C58A,, MC68HC11A8, MC68HC11E9, MC68HC16, PIC16C877A, EM78P447, MSP430F147, MSP430F435, E78C52D, E78E58B and follow-up release thereof compatible chip in any one, four I/O port WDOG of CPU, W_SO, W_CLK, W_DATA respectively with when prison storage module corresponding interface WDOG, W_SO, W_CLK, W_DATA be connected, these interfaces can be defined arbitrarily by software; The reset terminal of CPU (RST) is connected with the reset terminal (RST) of monitor; The RXD of CPU, TXD are connected with corresponding interface RXD, the TXD of uplink communication module respectively, and message accounting connects host computer by the uplink communication module, and " the half duplex communication receiving/transmission control method and the device " of our company's patent applied for adopted in the control of communication.Fig. 8 is for being present embodiment message accounting power module circuitry principle schematic, and wherein U9 is a three terminal regulator, and power module provides working power for whole message accounting.
The present embodiment scene is provided with central air conditioner Inlet and outlet water temperature collect module, and Inlet and outlet water temperature collect module circuit theory synoptic diagram is seen Fig. 9, and the DQ1 of CPU, DQ2 are connected with corresponding interface DQ1, the DQ2 of Inlet and outlet water temperature collect module.Figure 10 is a display interface module circuit theory synoptic diagram, comprises work indication and display panel interface, and Figure 11 is the circuit theory synoptic diagram of flow switch signal identification module.
Present embodiment can be controlled by by-pass valve control/detection module realization arrearage forbidding and working service.By-pass valve control control/detection module circuit theory diagrams are seen Fig. 6.Valve control/detection module adopts optocoupler 521 to realize the strong and weak electricity isolation, the input end of valve control/detection module connects the valve working power supply, and the isolation detection output terminal (CHECK1) of valve control/detection module connects the I/O interface of core CPU module CPU; Valve control/detection module control section core is controllable silicon Q1, the input control end (CONT1) of module connects the I/O interface of CPU, control linkage by-pass valve control working power loop, the control output end of valve control/detection module (OUT1) is to realize the arrearage forbidding.
Figure 15 is for a kind of user mode reference diagram of message accounting of the present invention in specifically practicing, and after message accounting work, the CPU module, is incorporated into the leaving water temperature situation again and measures to correct whether water supply signal by the flow switch signal identification module.Message accounting carries out temperature acquisition in real time, thereby obtains current real-time equipment correlation behavior information.Message accounting transmits field data by the uplink communication module, by display interface module with the current state of current metering units, Inlet and outlet water temperature, last month information such as expense show, check for the user.Storage module regularly carries out data backup memory during prison, effectively guarantees safety of data.Charge according to charging logic shown in Figure 2 simultaneously, when the user was disabled, valve Be Controlled was always closed, and cut off user's center air-condition circle water, forbade that the user uses, and removed the forbidding of this equipment until host computer.
Embodiment four: referring to Fig. 4～Figure 10, and Figure 16.The difference of present embodiment and embodiment three is: do not connect the flow switch signal identification sensor, only detect state and the Inlet and outlet water temperature difference and the charging of valve, be adapted to often carry out the application model of switch control.
Embodiment five: referring to Fig. 4, and Fig. 5, Fig. 7～Figure 11, Figure 17.Be with the difference of embodiment three: the user does not install the valve of registering one's residence, and valve control/detection module does not provide control.
Embodiment six: physical circuit and annexation be referring to Fig. 4～Fig. 6, Fig. 8～Figure 11, Figure 13, Figure 15.Device has on-the-spot display module.The difference of itself and embodiment three is to adopt BUS bus (the circuit theory synoptic diagram is referring to Figure 13) respectively, the corresponding connection of uplink communication module with other module port, among Fig. 4 the RXD of CPU, TXD respectively with Figure 13 in corresponding connection of RXD_Y, TXD_Y.
Embodiment seven: physical circuit and annexation be referring to Fig. 4～Fig. 6, Fig. 8～Figure 11, Figure 14, Figure 15.The difference of present embodiment and embodiment three is adopted the CAN bus with upper machine communication.Referring to Figure 14, the corresponding connection of uplink communication module with other module port.RST among Figure 14, ALE, CS2, RD, WR, INT_CAN, AD0-AD7 respectively with Fig. 4 in RST, the 30th pin ALE, the 12nd pin INT0 (definition cancellation originally), the 17th pin/RD, the 16th pin/WR, the 13rd pin INT1 (definition cancellation originally), the corresponding connection of 39-32 pin P00-P07 of CPU.CAN controller among Figure 14 is connected with transceiver is corresponding.
Embodiment eight: physical circuit and annexation be referring to Fig. 4, Fig. 5, Fig. 7～Figure 12, Figure 15.Device has on-the-spot display module.The difference of present embodiment and embodiment three, control device adopts relay.Referring to Figure 12, gate control/detection module control section core is a relay, the input control end (CONT1) of module connects the I/O interface of CPU, the control output end one (OUT1) of valve control/detection module connects by-pass valve control working power loop, and control output end two (OUT2) connects by-pass valve control powered-down loop.
Claims (9)
1, a kind of fixed flux temperature differential-type central air conditioner charging method, each Charging Detail Record unit for same central air conditioner system, air-conditioning the Charging Detail Record unit user is cold/heat transferred medium pipeline import and export place mounting temperature sensor respectively, it is characterized in that: described charging method, realize by following step
(1) cold/heat Calculation coefficient that central air conditioner at first is set is certain value k, and adopt flow switch or according to the import and export temperature difference judge air-conditioning cold/whether flow is arranged in the heat transferred medium pipeline,
(2) user's air-conditioning cold/have under the situation of flow in the heat transferred medium pipeline, judge whether the temperature difference of air-conditioning import and export reaches a predefined initial value,
(3) reach under the situation of initial value in the air-conditioning import and export temperature difference, obtain the enthalpy Cha ⊿ h of medium under the corresponding import and export temperature, then the medium enthalpy difference ⊿ h that flows through and the sum of products time of coefficient k are carried out integration, cumulative calculation goes out the calculating energy that Charging Detail Record unit user air-conditioning discharges or absorbs
(4) calculating energy that discharges or absorb with described Charging Detail Record unit user air-conditioning is as the charging basis of this Charging Detail Record unit, always calculate the expense that proportion is shared central air conditioner in the energy with this calculating energy in central air conditioner system, realize that the equivalent energy of central air conditioner charges.
2, fixed flux temperature differential-type central air conditioner charging method according to claim 1 is characterized in that: under constant flow water system, definite value k is one by the field measurement flow of metering object or with the constant determined of nominal flow rate of metering object.
3, fixed flux temperature differential-type central air conditioner charging method according to claim 1, it is characterized in that: the span of the charging initial value that user's air-conditioning import and export temperature difference is predetermined is between 0.1 degree centigrade to 2.0 degrees centigrade, do not reach in the temperature difference of user's air-conditioning import and export under the situation of predetermined initial value, do not produce the charging value; User's air-conditioning cold/do not have in the heat transferred medium pipeline not charge under the situation of flow.
4, according to claim 1 or 2 or 3 described fixed flux temperature differential-type central air conditioner charging methods, it is characterized in that: the situation of paying the fees of air conditioner user is monitored by a message accounting, monitor under the situation of subscriber arrearage by the valve control/detection module of message accounting close the user cold/the heat transferred medium pipeline valve of registering one's residence, to realize the arrearage disable function.
5, a kind of central air conditioner message accounting of realizing the described fixed flux temperature differential-type central air conditioner of claim 1 charging method, contain a core calculations unit, this core calculations unit comprises the core CPU module, storage module during prison, communication module and power module, power module provides working power for message accounting, the control interface of storage module during prison, data-interface and read-write synchronous clock interface connect the corresponding control interface or the I/O interface of core CPU module respectively, the serial communication interface of CPU connects the uplink communication module in the core CPU module, connect host computer by the uplink communication module, it is characterized in that: described core calculations unit also contains into, the leaving water temperature acquisition module, advance, outside integrated digital temperature sensor or the analog temperature sensor of connecting of leaving water temperature acquisition module, advance, the output terminal of leaving water temperature acquisition module connects two the corresponding I/O interfaces of CPU in the core CPU module respectively, collection is advanced, leaving water temperature signal, constant flow switching signal adopt the acquiescence deterministic model or by advancing, the outlet temperature difference judges that flow is definite value or zero.
6, central air conditioner message accounting according to claim 5, it is characterized in that: the core calculations unit contains a flow switching signal identification module, the input end of flow switch signal identification module connects a flow signal identification switch, the corresponding corresponding I/O interface that connects CPU in the core CPU module of the output terminal of flow switch signal identification module, realize the collection of flow switch signal
7, according to claim 5 or 6 described central air conditioner message accountings, it is characterized in that: message accounting contains valve control/detection module, to realize arrearage forbidding and working service; Valve control/detection module adopts optocoupler 521 to realize the strong and weak electricity isolation, the input end of valve control/detection module connects the valve working power supply, and the isolation detection output terminal (CHECK1) of valve control/detection module connects the I/O interface of CPU in the core CPU module; The input control end (CONT1) of valve control/detection module connects one group of I/O interface of CPU, the control output end of valve control/detection module (OUT1) control linkage by-pass valve control work ring current.
8, central air conditioner message accounting according to claim 7 is characterized in that: the uplink communication module adopts RS-485 bus communication mode, perhaps adopts CAN bus or BUS bus communication mode, perhaps adopts wireless communication mode.
9, central air conditioner message accounting according to claim 7, it is characterized in that: the core CPU module is provided with the display module interface, and the core calculations unit is connected with on-the-spot display module by the display module interface, realizes that Information Field shows.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101339082B (en) * | 2008-08-14 | 2010-06-02 | 北京众力德邦智能机电科技有限公司 | Heat quantity divided gauging method for heating |
| CN102401705A (en) * | 2011-11-17 | 2012-04-04 | 中国计量学院 | Measuring method and device of single temperature sensor ultrasonic wave heat |
| CN101709979B (en) * | 2009-12-11 | 2013-06-12 | 杭州哲达科技股份有限公司 | Fixed flow temperature difference charge system |
| CN112669529A (en) * | 2020-12-04 | 2021-04-16 | 陕西启迪瑞行清洁能源研究院有限公司 | Multi-stage grade heat energy charging device |
-
2008
- 2008-03-18 CN CNA2008100493713A patent/CN101241016A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101339082B (en) * | 2008-08-14 | 2010-06-02 | 北京众力德邦智能机电科技有限公司 | Heat quantity divided gauging method for heating |
| CN101709979B (en) * | 2009-12-11 | 2013-06-12 | 杭州哲达科技股份有限公司 | Fixed flow temperature difference charge system |
| CN102401705A (en) * | 2011-11-17 | 2012-04-04 | 中国计量学院 | Measuring method and device of single temperature sensor ultrasonic wave heat |
| CN102401705B (en) * | 2011-11-17 | 2013-05-01 | 中国计量学院 | Measuring method and device of single temperature sensor ultrasonic wave heat |
| CN112669529A (en) * | 2020-12-04 | 2021-04-16 | 陕西启迪瑞行清洁能源研究院有限公司 | Multi-stage grade heat energy charging device |
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