CN110118438A - Heat from Low-temperature Flue Gas and its control method - Google Patents
Heat from Low-temperature Flue Gas and its control method Download PDFInfo
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- CN110118438A CN110118438A CN201910401353.5A CN201910401353A CN110118438A CN 110118438 A CN110118438 A CN 110118438A CN 201910401353 A CN201910401353 A CN 201910401353A CN 110118438 A CN110118438 A CN 110118438A
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- heat
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- heating power
- heater
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
- F24H7/02—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
- F24H7/04—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
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- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a kind of Heat from Low-temperature Flue Gas and its control methods, wherein Heat from Low-temperature Flue Gas includes: liner, heater, water pump, triple valve check valve and the phase-change material for accumulation of heat；The water outlet of liner is equipped with the leaving water temperature sensors to detect coolant-temperature gage, and the water inlet of liner is equipped with the inflow temperature sensor to detect coolant-temperature gage；The first end of triple valve is connected to the first bifurcation mouth of the water inlet pipe, and the second end of triple valve is connected to the water outlet of the liner, and the third end of triple valve is connected to the outlet pipe of the Heat from Low-temperature Flue Gas；One end of check valve is connected to the second bifurcation mouth of the water inlet pipe, and the third bifurcation mouth of pipeline is connected between the other end and triple valve and the water outlet of the liner.The present invention can judge phase change material releases heat excessive velocities in the testing result according to water flow sensor, inflow temperature sensor and leaving water temperature sensors, and the cooling velocity to avoid phase-change material is too fast and causes phase-change material surfusion.
Description
Technical field
The present invention relates to technical field of water heaters more particularly to a kind of Heat from Low-temperature Flue Gas and its control methods.
Background technique
Heat from Low-temperature Flue Gas slowly moves towards market due to small in size, novel appearance.Heat from Low-temperature Flue Gas relies on phase-change material
Being converted for physical state carry out heat accumulation and heat release.In the exothermic process of phase-change material, if phase change material releases heat is too fast
The cooling velocity of the phase-change material can be made too fast, and then cause phase-change material surfusion, or even will cause phase-change material failure.
Currently, relevant Heat from Low-temperature Flue Gas, often through the mode for carrying out indirect heating to phase-change material, to avoid phase transformation
The cooling velocity of material is too fast.
Since phase-change material is filled in the Heat from Low-temperature Flue Gas ontology equipped with heat exchanger, by being heated to phase-change material
During, the heat in phase-change material is still largely absorbed by the water in heat exchanger, and cause Heat from Low-temperature Flue Gas heat exchange efficiency low,
Energy waste is caused, meanwhile, increase the heating component to phase-change material, causes the at high cost of Heat from Low-temperature Flue Gas.
Above content is only used to facilitate the understanding of the technical scheme, and is not represented and is recognized that above content is existing skill
Art.
Summary of the invention
The main purpose of the present invention is to provide a kind of Heat from Low-temperature Flue Gas and its control methods, it is intended to solve the existing heat of transformation
The technical issues of hydrophone causes heat exchange efficiency to reduce and heating to phase-change material.
To achieve the above object, the present invention provides a kind of Heat from Low-temperature Flue Gas, and the Heat from Low-temperature Flue Gas includes:
Phase-change material for accumulation of heat；
Liner, the liner is interior to be equipped with accommodating space, and the phase-change material is arranged in the accommodating space, the liner
Water outlet be equipped with to the leaving water temperature sensors that detect coolant-temperature gage, the water inlet of the liner is equipped with to detect coolant-temperature gage
Inflow temperature sensor；
Heater, the water outlet of the heater are connected to the water inlet of the liner；
Water pump, the water outlet of the water pump are connected to the water inlet of the heater, the water inlet of the water pump with it is described
The water inlet pipe of Heat from Low-temperature Flue Gas is connected to；
Triple valve, the first end of the triple valve are connected to the first bifurcation mouth of the water inlet pipe, and the of the triple valve
Two ends are connected to the water outlet of the liner, and the third end of the triple valve is connected to the outlet pipe of the Heat from Low-temperature Flue Gas；
Check valve, one end of the check valve are connected to the second bifurcation mouth of the water inlet pipe, the other end and the threeway
The third bifurcation mouth of pipeline is connected between valve and the water outlet of the liner.
Further, the Heat from Low-temperature Flue Gas further include: to detect the water flow sensor of water flow in the liner.
In addition, to achieve the above object, the present invention also provides a kind of Heat from Low-temperature Flue Gas control methods, it is applied to phase above-mentioned
Heating hydrophone, the Heat from Low-temperature Flue Gas control method the following steps are included:
Obtain the corresponding outlet temperature of the liner, water inlet temperature and the corresponding water flow of the Heat from Low-temperature Flue Gas
Amount；
Based on the outlet temperature, the water inlet temperature and the water flow, determine the phase-change material pre-
If the rate of heat release in duration；
Determine whether the rate of heat release is greater than the corresponding default rate of heat release of the phase-change material；
When the rate of heat release is greater than the default rate of heat release, according to preset rules control the heater and/or
The water pump, to increase the inflow temperature of the liner and/or reduce the water velocity of water in the liner.
Further, described to control the heater and/or the water pump according to preset rules, to reduce the phase transformation material
The step of exotherm rate of material includes:
Increase the heating power of the heater, and/or, close the water pump.
Further, when the rate of heat release is greater than the default rate of heat release, add according to preset rules control is described
The step of hot device and/or the water pump includes:
When the rate of heat release is greater than the default rate of heat release, the rate of heat release and the default heat release speed are determined
Difference between rate, if be greater than corresponding first preset difference value of the default rate of heat release；
When the difference is less than or equal to first preset difference value, the current heating power of the heater is obtained；
It is in the corresponding power bracket of low-grade heating power in the current heating power or middle-grade heating power is corresponding
Power bracket in when, increase the heating power of the heater, and/or, reduce the revolving speed of the water pump；
When the current heating power is in the corresponding power bracket of high-grade heating power, turning for the water pump is reduced
Speed.
Further, the difference between the determination rate of heat release and the default rate of heat release, if be greater than institute
After the step of stating default rate of heat release corresponding first preset difference value, further includes:
When the difference is greater than first preset difference value, determine whether the difference is greater than the default rate of heat release
Corresponding second preset difference value, wherein the second preset difference value is greater than first preset difference value；
When the difference is less than or equal to second preset difference value, the current heating power of the heater is obtained；
When the current heating power is in the corresponding power bracket of high-grade heating power, the fortune of the water pump is determined
Row state；
When the operating status is to run at high speed state, the water pump low-speed running is controlled；
When the operating status is middling speed operating condition or low-speed running state, controls the water pump and close.
Further, after the step of current heating power for obtaining the heater, further includes:
When the current heating power is in the corresponding power bracket of middle-grade heating power, increase the heater
Heating power, and determine the operating status of the water pump；
When the operating status is to run at high speed state, the water pump middling speed operating is controlled；
When the operating status is middling speed operating condition, the water pump low-speed running is controlled；
When the operating status is low-speed running state, controls the water pump and close.
Further, after the step of current heating power for obtaining the heater, further includes:
When the current heating power is in the corresponding power bracket of low-grade heating power, increase the heater
Heating power is run so that the heater is heated according to high-grade heating power；Alternatively,
When the current heating power is in the corresponding power bracket of low-grade heating power, increase the heater
Heating power is run so that the heater is heated according to middle-grade heating power, and determines the operating status of the water pump；
When the operating status is to run at high speed state, the water pump middling speed operating is controlled；
When the operating status is middling speed operating condition, the water pump low-speed running is controlled；
When the operating status is low-speed running state, and controls the water pump and close.
Further, whether the determination difference is greater than corresponding second preset difference value of the default rate of heat release
After step, further includes:
When the difference is greater than second preset difference value, increase the heating power of the heater, and described in control
Water pump is closed.
Further, it is described be based on the outlet temperature, the water inlet temperature and the water flow, determine described in
The step of rate of heat release of the phase-change material in preset duration includes:
Based on the water flow, the target water quality of the Heat from Low-temperature Flue Gas in preset duration is determined；
The rate of heat release is calculated based on the outlet temperature, the water inlet temperature and target water quality.
The present invention can be in the detection knot according to water flow sensor, inflow temperature sensor and leaving water temperature sensors
Fruit, when judging phase change material releases heat excessive velocities, by increasing the inflow temperature of heat exchanger water inlet and/or reducing in heat exchanger
The mode of the water velocity of water reduces the exotherm rate of phase-change material, avoids the cooling velocity of phase-change material too fast and causes phase
Become material surfusion, the case where even phase-change material being caused to fail, without being heated to phase-change material, i.e. phase transformation material
There is only exothermic processes for material, and then improve heat exchange efficiency and energy utilization rate, reduce the cost of Heat from Low-temperature Flue Gas.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of Heat from Low-temperature Flue Gas in one embodiment of the invention；
Fig. 2 is the flow diagram of Heat from Low-temperature Flue Gas control method first embodiment of the present invention.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 100 | Heat from Low-temperature Flue Gas | 110 | Liner |
| 120 | Heater | 130 | Water pump |
| 140 | Water flow sensor | 150 | Inflow temperature sensor |
| 160 | Leaving water temperature sensors | 170 | Check valve |
| 180 | Triple valve |
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of Heat from Low-temperature Flue Gas, and referring to Fig.1, Fig. 1 is the knot of Heat from Low-temperature Flue Gas in one embodiment of the invention
Structure schematic diagram.
In the present embodiment, the Heat from Low-temperature Flue Gas 100 include: liner 110, heater 120, water pump 130, check valve 170,
Triple valve 180 and phase-change material for accumulation of heat.
110 are equipped with accommodating space in liner, and the phase-change material is arranged in the accommodating space；The water outlet of liner 110
Mouthful be equipped with to the leaving water temperature sensors 160 that detect coolant-temperature gage, the water inlet of liner 110 be equipped with to detect coolant-temperature gage into
Water temperature sensor 150.Wherein, it is additionally provided with heat exchanger in liner, in the accommodating space, phase-change material is attached at heat exchanger
Surrounding, inflow temperature sensor 150 can be attached on the pipeline being connected to heat exchanger water inlet, close to heat exchanger water inlet
Side, leaving water temperature sensors 160 can be attached on the pipeline being connected to heat exchanger water outlet, close to the one of heat exchanger water outlet
Side.
The water outlet of heater 120 is connected to the water inlet of the liner 110.The water outlet of water pump 130 and the heating
The water inlet of device 120 is connected to, and the water inlet of the water pump 130 is connected to the water inlet pipe of the Heat from Low-temperature Flue Gas.The water pump 130 is
The water pump of adjustable speed.
The first end of triple valve 180 is connected to the first bifurcation mouth of the water inlet pipe, the second end of the triple valve 180 with
The water outlet of the liner 110 is connected to, and the third end of the triple valve 180 is connected to the outlet pipe of the Heat from Low-temperature Flue Gas 100.
The triple valve 180 is thermostatic valve or water mixing valve.
One end of check valve 170 is connected to the second bifurcation mouth of the water inlet pipe, the other end and the triple valve 180 and institute
State the third bifurcation mouth connection of pipeline between the water outlet of liner 100.As shown in Figure 1, the second bifurcation mouth is set in water inlet pipe
Between first bifurcation mouth and the water inlet of water pump 130.
Further, in one embodiment, Heat from Low-temperature Flue Gas further include: to detect the water flow of water flow in the liner
Quantity sensor 140.The water flow sensor 140 may be disposed at the second bifurcation mouth including water pump, heater and liner and the
In pipeline between three bifurcation mouth, it is preferable that the second bifurcation mouth and water pump 130 is arranged in water inlet pipe in water flow sensor 140
Water inlet between part pipeline.
In the present embodiment, when the water flow of phase transformation water inlet end is less than or equal to preset flow, Heat from Low-temperature Flue Gas is in and follows
The ring heating period, otherwise Heat from Low-temperature Flue Gas, which is in, uses the water heating period.
When Heat from Low-temperature Flue Gas is in the circulating-heating stage, if water pump 130 is in normal operating condition, in Heat from Low-temperature Flue Gas
Water flow with the operation of water pump, the water in Heat from Low-temperature Flue Gas is followed by water pump 130, heater 120, liner 110, unidirectional
Valve 170 forms water circulation, by the heating of heater, the heat release of phase-change material or heat accumulation, to maintain or increase phase transformation hot water
The temperature of water in device.
When Heat from Low-temperature Flue Gas was in the water heating period, the water inlet end water inlet of Heat from Low-temperature Flue Gas water inlet pipe, phase transformation hot water
It, can be via the water outlet of Heat from Low-temperature Flue Gas after water in device is followed by water pump 130, heater 120, liner 110, triple valve 180
End outflow.
In the present embodiment, water inlet temperature is obtained by obtaining the testing result of inflow temperature sensor 150, by obtaining
The testing result for taking out water temperature sensor 160 obtains outlet temperature, and real by the testing result of water flow sensor 140
When the corresponding water flow of monitoring liner, target water flow of the Heat from Low-temperature Flue Gas in preset duration is then obtained according to the water flow
Amount, the quality of the water flowed into heat exchanger in preset duration is determined according to the target water flow, then according to the quality, water outlet
The heat absorption formula of mouth temperature, water inlet temperature and water, calculates the caloric receptivity of the water flowed into heat exchanger in preset duration, root
Rate of heat release of the phase-change material in preset duration is determined according to the caloric receptivity.And when rate of heat release is greater than default rate of heat release,
The heater and/or the water pump are controlled according to preset rules, to increase described in inflow temperature and/or the reduction of the liner
The water velocity of water in liner, and then the inflow temperature by increasing heat exchanger water inlet and/or the water for reducing water in heat exchanger
The mode of flow velocity degree reduces the exotherm rate of phase-change material, avoids the cooling velocity of phase-change material too fast and causes phase-change material
Surfusion, the case where even phase-change material being caused to fail.
Heat from Low-temperature Flue Gas in the present embodiment, can according to water flow sensor 140, inflow temperature sensor 150 with
And the testing result of leaving water temperature sensors 160, when judging phase change material releases heat excessive velocities, by increasing heat exchanger water inlet
Inflow temperature and/or reduce heat exchanger in water water velocity mode, reduce the exotherm rate of phase-change material, avoid phase transformation
The cooling velocity of material is too fast and the case where causing phase-change material surfusion, even phase-change material caused to fail, be not necessarily to
Phase-change material is heated, i.e., there is only exothermic processes for phase-change material, and then improve heat exchange efficiency and using energy source
Rate reduces the cost of Heat from Low-temperature Flue Gas.
The present invention also provides a kind of Heat from Low-temperature Flue Gas control methods, are Heat from Low-temperature Flue Gas of the present invention control referring to Fig. 2, Fig. 2
The flow diagram of method first embodiment.
In the present embodiment, which is applied to the Heat from Low-temperature Flue Gas of above-described embodiment.The phase transformation
Water heater control method includes:
Step S110 obtains the corresponding outlet temperature of the liner, water inlet temperature and the corresponding water of the liner
Flow；
In the present embodiment, water inlet temperature is obtained by obtaining the testing result of inflow temperature sensor, passes through acquisition
The testing result of leaving water temperature sensors obtains outlet temperature, and in the testing result real-time monitoring for passing through water flow sensor
The corresponding water flow of gallbladder.
Step S120 is based on the outlet temperature, the water inlet temperature and the water flow, determines the phase transformation
Rate of heat release of the material in preset duration；
In the present embodiment, outlet temperature, water inlet temperature and water flow are being got, is being obtained first according to the water flow
To target water flow of the Heat from Low-temperature Flue Gas in preset duration, determined in preset duration in heat exchanger according to the target water flow
The quality of the water flowed into calculates pre- then according to the heat absorption formula of the quality, outlet temperature, water inlet temperature and water
If the caloric receptivity of the water flowed into heat exchanger in duration, heat release of the phase-change material in preset duration is determined according to the caloric receptivity
Rate.
Step S130, determines whether the rate of heat release is greater than the corresponding default rate of heat release of the phase-change material；
Wherein, default rate of heat release can be rationally arranged according to phase-change material.
In the present embodiment, when obtaining rate of heat release of the phase-change material in preset duration, judge that the rate of heat release is
It is no to be greater than default rate of heat release.
Step S140 adds when the rate of heat release is greater than the default rate of heat release according to preset rules control is described
Hot device and/or the water pump, to increase the inflow temperature of the liner and/or reduce the water velocity of water in the liner.
In the present embodiment, when exotherm rate is greater than the default rate of heat release, phase change material releases heat excessive velocities are indicated,
Therefore, the heater and/or the water pump are controlled according to preset rules, by the inflow temperature for increasing heat exchanger water inlet
And/or reduce the mode of the water velocity of water in heat exchanger, the exotherm rate of phase-change material is reduced, the cooling of phase-change material is avoided
Excessive velocities and the case where cause phase-change material surfusion, even phase-change material caused to fail.
It should be noted that control reasonably can be combined by the progress of heater and water pump, i.e., by inflow temperature with
And the combination control of water velocity, reduce the exotherm rate of phase-change material.
Further, in one embodiment, step S140 includes: the heating power for increasing the heater, and/or,
Close the water pump.
In the present embodiment, by way of increasing the heating power of heater and/or switching off the pump, phase-change material is reduced
Exotherm rate, wherein can according to the difference between rate of heat release and default rate of heat release, rationally carry out increase heater plus
Thermal power and the combination between switching off the pump control.
It should be noted that if rate of heat release is less than or equal to default rate of heat release, then show the heat release of the phase-change material
Speed is suitable, and therefore, the operating status of heat exchanging device and water pump is not adjusted.
The Heat from Low-temperature Flue Gas control method that the present embodiment proposes, by obtain the corresponding outlet temperature of the liner, into
Mouth of a river temperature and the corresponding water flow of the Heat from Low-temperature Flue Gas are then based on the outlet temperature, the water inlet temperature
And the water flow, it determines rate of heat release of the phase-change material in preset duration, then determines that the rate of heat release is
It is no to be greater than the corresponding default rate of heat release of the phase-change material, finally it is greater than the default rate of heat release in the rate of heat release
When, the heater and/or the water pump are controlled according to preset rules, to reduce the exotherm rate of the phase-change material, is realized
When phase change material releases heat excessive velocities, passes through the inflow temperature for increasing heat exchanger water inlet and/or reduce water in heat exchanger
The mode of water velocity reduces the exotherm rate of phase-change material, avoids the cooling velocity of phase-change material too fast and causes phase transformation material
Material surfusion, the case where even phase-change material being caused to fail, without heating to phase-change material, i.e., phase-change material is only
There are exothermic processes, and then improve heat exchange efficiency and energy utilization rate, reduce the cost of Heat from Low-temperature Flue Gas.
Based on first embodiment, the second embodiment of Heat from Low-temperature Flue Gas control method of the present invention is proposed, in the present embodiment,
Step S140 includes:
Step S141, the rate of heat release be greater than the default rate of heat release when, determine the rate of heat release with it is described
Difference between default rate of heat release, if be greater than corresponding first preset difference value of the default rate of heat release；
In the present embodiment, when rate of heat release is greater than default rate of heat release, rate of heat release and the default heat release are first calculated
Difference between rate, the difference are that rate of heat release subtracts default rate of heat release, then determine whether the difference is greater than default put
Corresponding first preset difference value of hot rate.
Wherein, which is rationally arranged according to the default rate of heat release of the phase-change material, for example, this
One preset difference value is set as the 5% of default rate of heat release.
Step S142 obtains the current of the heater when the difference is less than or equal to first preset difference value
Heating power；
Step S143 is in the corresponding power bracket of low-grade heating power in the current heating power or middle-grade heats
When in the corresponding power bracket of power, increase the heating power of the heater, and/or, reduce the revolving speed of the water pump；
Step S144, in current heating power power bracket corresponding in high-grade heating power, described in reduction
The revolving speed of water pump.
Wherein, the corresponding power bracket of low-grade heating power may be configured as the minimum power of heater to heater maximum work
The 1/3 of rate, the corresponding power bracket of middle-grade heating power may be configured as the 1/3 of heater maximum power to heater maximum power
2/3, the corresponding power bracket of middle-grade heating power may be configured as the 2/3 of heater maximum power to heater maximum work
Rate.
In the present embodiment, when the difference is less than or equal to the first preset difference value, the current heating of the heater is obtained
Power, if current heating power is in the corresponding power bracket of low-grade heating power or current heating power is in middle-grade heating
In the corresponding power bracket of power, then increase the heating power of heater, and/or, the revolving speed of the water pump is reduced, increase is passed through
The inflow temperature of heat exchanger water inlet and/or the mode for reducing the water velocity of water in heat exchanger, reduce the heat release of phase-change material
Speed avoids the cooling velocity of phase-change material too fast and causes phase-change material surfusion, phase-change material is even caused to fail
It happens.
Specifically, it is in the corresponding power bracket of low-grade heating power in current heating power, it is possible to increase heater
Heating power, so that the heating power of adjustment post-heater is in the corresponding power bracket of middle-grade heating power, alternatively, reducing
The revolving speed of water pump.It is in the corresponding power bracket of middle-grade heating power in current heating power, it is possible to increase the heating of heater
Power, so that the heating power of adjustment post-heater is in the corresponding power bracket of high-grade heating power, alternatively, reducing water pump
Revolving speed.
If current heating power is in the corresponding power bracket of high-grade heating power, the revolving speed of water pump is reduced, it is excellent
Selection of land, also controllable heater are run according to maximum power.
Wherein, the operating status of water pump includes low-speed running state, middling speed operating condition and the state that runs at high speed, and is being dropped
When the revolving speed of low water pump, if the operating status of water pump is the state that runs at high speed, the operating of water pump middling speed is controlled, if the operation of water pump
State is middling speed operating condition, then controls water pump low-speed running, if the operating status of water pump is low-speed running state, closes water
Pump.
Specifically, 1/3 of the revolving speed of water pump less than maximum (top) speed and 1/10 greater than maximum (top) speed when low-speed running, in
The revolving speed of water pump is less than the 2/3 of maximum (top) speed and is greater than the 1/3 of maximum (top) speed when speed operating, the revolving speed of water pump when low-speed running
Greater than the 2/3 of maximum (top) speed.
The Heat from Low-temperature Flue Gas control method that the present embodiment proposes, by being greater than the default heat release speed in the rate of heat release
When rate, the difference between the rate of heat release and the default rate of heat release is determined, if be greater than the default rate of heat release pair
The first preset difference value answered obtains the heater then when the difference is less than or equal to first preset difference value
Current heating power is then in the corresponding power bracket of low-grade heating power in the current heating power or middle-grade heats
When in the corresponding power bracket of power, increase the heating power of the heater, and/or, the revolving speed of the water pump is reduced, or
In current heating power power bracket corresponding in high-grade heating power, the revolving speed of the water pump, Neng Gougen are reduced
According to the difference between rate of heat release and default rate of heat release, heater and water pump are accurately controlled, changed by increasing
The inflow temperature of hot device water inlet and/or the mode for reducing the water velocity of water in heat exchanger reduce the heat release speed of phase-change material
While spending, the normal operation of Heat from Low-temperature Flue Gas is not influenced, and then improve user experience, avoid the cooling velocity mistake of phase-change material
The case where causing phase-change material surfusion fastly, even phase-change material caused to fail.
Based on second embodiment, the 3rd embodiment of Heat from Low-temperature Flue Gas control method of the present invention is proposed, in the present embodiment,
After step S141, further includes:
It is described pre- to determine whether the difference is greater than when the difference is greater than first preset difference value by step S145
If corresponding second preset difference value of rate of heat release；
Step S146 obtains the current of the heater when the difference is less than or equal to second preset difference value
Heating power, wherein the second preset difference value is greater than first preset difference value；
Step S147 determines institute when the current heating power is in the corresponding power bracket of high-grade heating power
State the operating status of water pump；
Step S148 controls the water pump low-speed running when the operating status is to run at high speed state；
Step S149 controls the water pump and closes when the operating status is middling speed operating condition or low-speed running state
It closes.
Wherein, which is rationally arranged according to the default rate of heat release of the phase-change material, for example, this
Two preset difference values are set as the 10% of default rate of heat release.
In the present embodiment, when the difference is greater than the first preset difference value, determine whether difference is greater than the default heat release
Corresponding second preset difference value of rate is less than or equal to second preset difference value in difference, obtains the current of the heater and adds
Thermal power, if current heating power is in the corresponding power bracket of high-grade heating power, it is determined that the operating status of water pump, and
Water pump be in run at high speed state when, control the water pump low-speed running, the operating status be middling speed operating condition or
It when low-speed running state, controls the water pump and closes, and then reducing in heat exchanger by way of the water velocity of water, reduce phase
The exotherm rate for becoming material, avoids the cooling velocity of phase-change material too fast and causes phase-change material surfusion, even causes phase
The case where becoming material failure occurs.
It should be noted that if current heating power is in the corresponding power bracket of high-grade heating power, but this is current
Heating power is less than the maximum power of heater, then while reducing pump rotary speed, control heater is transported according to maximum power
Row.
Further, in one embodiment, after step S146, the Heat from Low-temperature Flue Gas control method further include:
Step a increases described add when the current heating power is in the corresponding power bracket of middle-grade heating power
The heating power of hot device, and determine the operating status of the water pump；
Step b controls the water pump middling speed operating when the operating status is to run at high speed state；
Step c controls the water pump low-speed running when the operating status is middling speed operating condition；
Step d controls the water pump and closes when the operating status is low-speed running state.
In the present embodiment, if current heating power is in the corresponding power bracket of middle-grade heating power, increase institute
The heating power of heater is stated, so that the heating power of adjustment post-heater is in the corresponding power bracket of high-grade heating power
It is interior, or even the heating power of adjustment post-heater is maximum power.
It then determines the operating status of the water pump, and when water pump is in and runs at high speed state, controls in the water pump
Speed operating, when water pump is in middling speed operating condition, controls the water pump low-speed running, is in low-speed running state in water pump
When, it controls the water pump and closes, and then the inflow temperature by increasing heat exchanger water inlet and the water for reducing water in heat exchanger
The mode of flow velocity degree reduces the exotherm rate of phase-change material, avoids the cooling velocity of phase-change material too fast and causes phase-change material
Surfusion, the case where even phase-change material being caused to fail, since the Parameters variation of heater and water pump is smaller, pass through
The control mode can also reduce the noise of Heat from Low-temperature Flue Gas, and then promote user experience.
Further, in another embodiment, after step S146, the Heat from Low-temperature Flue Gas control method further include:
Step e increases described add when the current heating power is in the corresponding power bracket of low-grade heating power
The heating power of hot device is run so that the heater is heated according to high-grade heating power；Alternatively,
Step f increases described add when the current heating power is in the corresponding power bracket of low-grade heating power
The heating power of hot device is run so that the heater is heated according to middle-grade heating power, and determines the operation shape of the water pump
State；
Step g controls the water pump middling speed operating when the operating status is to run at high speed state；
Step h controls the water pump low-speed running when the operating status is middling speed operating condition；
Step i when the operating status is low-speed running state, and controls the water pump and closes.
In the present embodiment, if current heating power is in the corresponding power bracket of low-grade heating power, increase institute
The heating power of heater is stated, so that the heating power of adjustment post-heater is in the corresponding power bracket of high-grade heating power
It is interior, or even the heating power of adjustment post-heater is maximum power, to realize the only water inlet temperature by increasing heat exchanger water inlet
The mode of degree reduces the exotherm rate of phase-change material.
Alternatively, increasing the heater if current heating power is in the corresponding power bracket of low-grade heating power
Heating power so that adjustment post-heater heating power be in the corresponding power bracket of middle-grade heating power, then really
The operating status of the fixed water pump, and when water pump is in and runs at high speed state, the water pump middling speed operating is controlled, at water pump
When middling speed operating condition, the water pump low-speed running is controlled, when water pump is in low-speed running state, the water pump is controlled and closes
It closes, and then is reduced by way of the water velocity of water in the inflow temperature increasing heat exchanger water inlet and reduction heat exchanger
The exotherm rate of phase-change material can also be reduced since the Parameters variation of heater and water pump is smaller by the control mode
The noise of Heat from Low-temperature Flue Gas, and then promote user experience.
Further, in one embodiment, after step S145, the Heat from Low-temperature Flue Gas control method further include:
When the difference is greater than second preset difference value, increase the heating power of the heater, and described in control
Water pump is closed.
In the present embodiment, the difference when difference is greater than the second preset difference value, between rate of heat release and default rate of heat release
Away from larger, therefore, closed in the debugging control water pump for increasing the heating power of heater, by increasing heat exchanger water inlet
Inflow temperature and the mode for reducing the water velocity of water in heat exchanger, reduce the exotherm rate of phase-change material.Wherein, it can control
Heater is heated according to maximum power and is run, to accelerate by the operating parameter for adjusting heater and water pump on a large scale
The rising of inflow temperature and the reduction of water velocity reduce the exotherm rate of phase-change material, quickly as far as possible to prevent out
The surfusion of existing phase-change material.
The Heat from Low-temperature Flue Gas control method that the present embodiment proposes, by being greater than first preset difference value in the difference
When, determine whether the difference is greater than corresponding second preset difference value of the default rate of heat release；Then it is less than in the difference
Or when being equal to second preset difference value, obtain the current heating power of the heater；Then in the current heating power
When in the corresponding power bracket of high-grade heating power, the operating status of the water pump is determined；Then in the operating status
For run at high speed state when, control the water pump low-speed running, the operating status be non-high-speed operating condition when, control institute
Water pump closing is stated, and then by way of the water velocity of water in reduction heat exchanger, reduces the exotherm rate of phase-change material, avoids
The cooling velocity of phase-change material is too fast and the case where causing phase-change material surfusion, even phase-change material caused to fail.
Simultaneously as the Parameters variation of water pump is smaller, the noise of Heat from Low-temperature Flue Gas can also be reduced by the control mode, and then promoted
User experience.
Based on embodiment is risen, the fourth embodiment of Heat from Low-temperature Flue Gas control method of the present invention is proposed, in the present embodiment,
Step S120 includes:
Step S121 is based on the water flow, determines the target water quality of the Heat from Low-temperature Flue Gas in preset duration；
Step S122 calculates the heat release based on the outlet temperature, the water inlet temperature and target water quality
Rate.
In the present embodiment, outlet temperature, water inlet temperature and water flow are being got, is being obtained first according to the water flow
To target water flow of the Heat from Low-temperature Flue Gas in preset duration, determined in preset duration in heat exchanger according to the target water flow
The target water quality of the water flowed into, then according to the heat absorption of the target water quality, outlet temperature, water inlet temperature and water
Formula calculates the caloric receptivity of the water flowed into heat exchanger in preset duration, specifically, the calculation formula of caloric receptivity are as follows: Qi=
CM (To-Ti), wherein Qi is caloric receptivity, and C is the specific heat capacity of water, and M is target water quality, and To is outlet temperature, and Ti is water inlet
Mouth temperature.
Then, rate of heat release of the phase-change material in preset duration is determined according to the caloric receptivity, specifically, it is contemplated that heat exchange
Thermal losses in the process can may be configured as 0.99, i.e. the thermal discharge * 0.99 of phase-change material multiplied by a coefficient A, coefficient A
For the caloric receptivity, and then the thermal discharge of phase-change material is obtained, is then obtained according to the thermal discharge of the phase-change material and preset duration
To the exothermal efficiency, i.e. exothermal efficiency=thermal discharge/preset duration.
The Heat from Low-temperature Flue Gas control method that the present embodiment proposes determines institute in preset duration by being based on the water flow
The target water quality of Heat from Low-temperature Flue Gas is stated, the outlet temperature, the water inlet temperature and target water quality are then based on
The rate of heat release is calculated, can accurately obtain rate of heat release according to water flow, outlet temperature, the water inlet temperature, into
And improve the accuracy controlled according to rate of heat release heater and water pump.
In addition, the embodiment of the present invention also proposes a kind of computer readable storage medium, the computer readable storage medium
On be stored with Heat from Low-temperature Flue Gas control program, Heat from Low-temperature Flue Gas control program is realized when being executed by processor as appointed among the above
The step of Heat from Low-temperature Flue Gas control method described in one.
Each embodiment of computer readable storage medium specific embodiment of the present invention and above-mentioned Heat from Low-temperature Flue Gas control method
Essentially identical, in this not go into detail.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
It should be noted that in the claims, any reference symbol between parentheses should not be configured to power
The limitation that benefit requires.Word "comprising" does not exclude the presence of component or step not listed in the claims.Before component
Word "a" or "an" does not exclude the presence of multiple such components.The present invention can be by means of including several different components
It hardware and is realized by means of properly programmed computer.In the unit claims listing several devices, these are filled
Several in setting, which can be, to be embodied by the same item of hardware.The use of word first, second, and third is not
Indicate any sequence.These words can be construed to title.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of Heat from Low-temperature Flue Gas, which is characterized in that the Heat from Low-temperature Flue Gas includes:
Phase-change material for accumulation of heat；
Liner, the liner is interior to be equipped with accommodating space, and the phase-change material is arranged in the accommodating space, and the liner goes out
The mouth of a river is equipped with to the leaving water temperature sensors that detect coolant-temperature gage, the water inlet of the liner be equipped with to detect coolant-temperature gage into
Water temperature sensor；
Heater, the water outlet of the heater are connected to the water inlet of the liner；
Water pump, the water outlet of the water pump are connected to the water inlet of the heater, the water inlet of the water pump and the phase transformation
The water inlet pipe of water heater is connected to；
Triple valve, the first end of the triple valve are connected to the first bifurcation mouth of the water inlet pipe, the second end of the triple valve
It is connected to the water outlet of the liner, the third end of the triple valve is connected to the outlet pipe of the Heat from Low-temperature Flue Gas；
Check valve, one end of the check valve are connected to the second bifurcation mouth of the water inlet pipe, the other end and the triple valve with
The third bifurcation mouth connection of pipeline between the water outlet of the liner.
2. Heat from Low-temperature Flue Gas as described in claim 1, which is characterized in that the Heat from Low-temperature Flue Gas further include: to detect
State the water flow sensor of water flow in liner.
3. a kind of Heat from Low-temperature Flue Gas control method, which is characterized in that be applied to Heat from Low-temperature Flue Gas of any of claims 1 or 2, institute
State Heat from Low-temperature Flue Gas control method the following steps are included:
Obtain the corresponding outlet temperature of the liner, water inlet temperature and the corresponding water flow of the liner；
Based on the outlet temperature, the water inlet temperature and the water flow, determine the phase-change material when default
Rate of heat release in length；
Determine whether the rate of heat release is greater than the corresponding default rate of heat release of the phase-change material；
When the rate of heat release is greater than the default rate of heat release, the heater and/or described is controlled according to preset rules
Water pump, to increase the inflow temperature of the liner and/or reduce the water velocity of water in the liner.
4. Heat from Low-temperature Flue Gas control method as claimed in claim 3, which is characterized in that it is described control according to preset rules described in
The step of heater and/or water pump, exotherm rate to reduce the phase-change material includes:
Increase the heating power of the heater, and/or, close the water pump.
5. Heat from Low-temperature Flue Gas control method as claimed in claim 3, which is characterized in that be greater than in the rate of heat release described pre-
If when rate of heat release, including: according to the step of preset rules control heater and/or water pump
When the rate of heat release is greater than the default rate of heat release, determine the rate of heat release and the default rate of heat release it
Between difference, if be greater than corresponding first preset difference value of the default rate of heat release；
When the difference is less than or equal to first preset difference value, the current heating power of the heater is obtained；
It is in the corresponding power bracket of low-grade heating power or the corresponding function of middle-grade heating power in the current heating power
When within the scope of rate, increase the heating power of the heater, and/or, reduce the revolving speed of the water pump；
When the current heating power is in the corresponding power bracket of high-grade heating power, the revolving speed of the water pump is reduced.
6. Heat from Low-temperature Flue Gas control method as claimed in claim 5, which is characterized in that the determination rate of heat release and institute
State the difference between default rate of heat release, if the step of being greater than the default rate of heat release corresponding first preset difference value it
Afterwards, further includes:
When the difference is greater than first preset difference value, it is corresponding to determine whether the difference is greater than the default rate of heat release
The second preset difference value, wherein the second preset difference value be greater than first preset difference value；
When the difference is less than or equal to second preset difference value, the current heating power of the heater is obtained；
When the current heating power is in the corresponding power bracket of high-grade heating power, the operation shape of the water pump is determined
State；
When the operating status is to run at high speed state, the water pump low-speed running is controlled；
When the operating status is middling speed operating condition or low-speed running state, controls the water pump and close.
7. Heat from Low-temperature Flue Gas control method as claimed in claim 6, which is characterized in that described to obtain the current of the heater
After the step of heating power, further includes:
When the current heating power is in the corresponding power bracket of middle-grade heating power, increase the heating of the heater
Power, and determine the operating status of the water pump；
When the operating status is to run at high speed state, the water pump middling speed operating is controlled；
When the operating status is middling speed operating condition, the water pump low-speed running is controlled；
When the operating status is low-speed running state, controls the water pump and close.
8. Heat from Low-temperature Flue Gas control method as claimed in claim 6, which is characterized in that described to obtain the current of the heater
After the step of heating power, further includes:
When the current heating power is in the corresponding power bracket of low-grade heating power, increase the heating of the heater
Power is run so that the heater is heated according to high-grade heating power；Alternatively,
When the current heating power is in the corresponding power bracket of low-grade heating power, increase the heating of the heater
Power is run so that the heater is heated according to middle-grade heating power, and determines the operating status of the water pump；
When the operating status is to run at high speed state, the water pump middling speed operating is controlled；
When the operating status is middling speed operating condition, the water pump low-speed running is controlled；
When the operating status is low-speed running state, and controls the water pump and close.
9. Heat from Low-temperature Flue Gas control method as claimed in claim 6, which is characterized in that whether the determination difference is greater than
After the step of default rate of heat release corresponding second preset difference value, further includes:
When the difference is greater than second preset difference value, increase the heating power of the heater, and control the water pump
It closes.
10. such as the described in any item Heat from Low-temperature Flue Gas control methods of claim 3 to 9, which is characterized in that described to go out based on described in
Mouth of a river temperature, the water inlet temperature and the water flow, determine rate of heat release of the phase-change material in preset duration
The step of include:
Based on the water flow, the target water quality of the Heat from Low-temperature Flue Gas in preset duration is determined；
The rate of heat release is calculated based on the outlet temperature, the water inlet temperature and target water quality.
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| CN201910401353.5A CN110118438B (en) | 2019-05-14 | 2019-05-14 | Phase change water heater and control method thereof |
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|---|---|---|---|
| CN201910401353.5A CN110118438B (en) | 2019-05-14 | 2019-05-14 | Phase change water heater and control method thereof |
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| CN110118438B CN110118438B (en) | 2021-05-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118439A (en) * | 2019-05-14 | 2019-08-13 | 芜湖美的厨卫电器制造有限公司 | Heat from Low-temperature Flue Gas and its control method |
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| CN207778806U (en) * | 2018-01-02 | 2018-08-28 | 芜湖美的厨卫电器制造有限公司 | Heat from Low-temperature Flue Gas |
| CN108507164A (en) * | 2017-02-28 | 2018-09-07 | 美的集团股份有限公司 | A kind of water heater |
| CN208312700U (en) * | 2018-03-27 | 2019-01-01 | 芜湖美的厨卫电器制造有限公司 | A kind of phase transformation electric heater |
| US20190101297A1 (en) * | 2015-03-10 | 2019-04-04 | Joseph Copeland | Heat transfer apparatus and heat transfer system for masonry heater |
| CN110118439A (en) * | 2019-05-14 | 2019-08-13 | 芜湖美的厨卫电器制造有限公司 | Heat from Low-temperature Flue Gas and its control method |
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| US20190101297A1 (en) * | 2015-03-10 | 2019-04-04 | Joseph Copeland | Heat transfer apparatus and heat transfer system for masonry heater |
| CN108507164A (en) * | 2017-02-28 | 2018-09-07 | 美的集团股份有限公司 | A kind of water heater |
| CN207778806U (en) * | 2018-01-02 | 2018-08-28 | 芜湖美的厨卫电器制造有限公司 | Heat from Low-temperature Flue Gas |
| CN208312700U (en) * | 2018-03-27 | 2019-01-01 | 芜湖美的厨卫电器制造有限公司 | A kind of phase transformation electric heater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110118439A (en) * | 2019-05-14 | 2019-08-13 | 芜湖美的厨卫电器制造有限公司 | Heat from Low-temperature Flue Gas and its control method |
| CN110118439B (en) * | 2019-05-14 | 2021-05-28 | 芜湖美的厨卫电器制造有限公司 | Phase change water heater and control method thereof |
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| CN110118438B (en) | 2021-05-25 |
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