CN104896567B - Multiple-energy-source combines hot-water heating system and control method - Google Patents
Multiple-energy-source combines hot-water heating system and control method Download PDFInfo
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- CN104896567B CN104896567B CN201510225375.2A CN201510225375A CN104896567B CN 104896567 B CN104896567 B CN 104896567B CN 201510225375 A CN201510225375 A CN 201510225375A CN 104896567 B CN104896567 B CN 104896567B
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Abstract
The invention provides a kind of multiple-energy-source combination hot-water heating system and control method, the hot-water heating system carries out heat supply using three kinds of heat collector, air source heat pump, electric heater supplying heat sources, and including water tank temperature sensor, heat collector temperature sensor, air temperature sensor；The control method is：If heat collector vacuum tube temperature is higher than water tank water temperature, and difference is more than the heat collector and the water tank temperature difference of setting, then heat collector is opened；If water tank water temperature is less than setting water tank temperature, water tank temperature rise curve is unsatisfactory for temperature increase requirement, and air themperature is more than air-source opening temperature, then air source heat pump is opened；If water tank water temperature is less than setting water tank temperature, water tank temperature rise curve is unsatisfactory for temperature increase requirement, then electric heater is opened；Successively to three kinds of supplying heat sources whether unlatching judges, and the unlatching of heat collector considers the influence that heat collector receives this natural energy resources of sunshine, and air source heat pump opens the influence for considering air themperature, system is reached safe operation and saves the effect of the energy.
Description
Technical field
The present invention relates to technical field of solar water heaters, more particularly to a kind of multiple-energy-source combination hot-water heating system and controlling party
Method.
Background technology
Solar water heater is widely received, increasing family uses the sun as green product
Can water heater offer hot water for life.But in rainy weather, solar water heater can not provide stable hot water, and such case is given
User brings very big inconvenience.
In order to enable users to the hot water stablized, at present using the side for increasing supplementary energy on solar water heater
Formula, it mainly has following several ways：1st, solar energy and electrical heating combination, electrical heating are not limited by other environmental factors, can
Start at any time, but inefficient, typically to heat 4-6 hours could obtain available hot water, and power consumption is larger；2nd, solar energy and combustion
Gas combines, and gas heating speed is fast, but the connection between solar water heater and gas heater often uses multiple hands at present
Dynamic valve is changed, thus causes the inconvenience used；3rd, solar energy and heat pump combination, heat pump has the advantages of efficient, but changes effect
Rate is relatively low.
Publication No. CN103090456A Chinese invention patent discloses a kind of multiple-energy-source combination hot-water heating system and multipotency
Source controls switching method, when user largely uses water heater, starts solar energy, heat pump, combustion gas successively by system controller
And electrical heating, quickly provide the user with and comfortably tested with water body, realize energy-saving effect, but to solar energy, heat pump, combustion gas and electrical heating
The temperature rise curve started in Main Basiss water tank, and the mode for taking order to open, whether each energy open complete foundation
Client's design temperature, solar energy actual use situation is not accounted for, the influence of environment temperature factor is not accounted for, does not account for yet
The relation of each energy and environment factor.
The content of the invention
The technical problems to be solved by the invention are：There is provided that a kind of stabilization safe for operation is reasonable, and save the multipotency of the energy
Combine hot-water heating system and control method in source.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：
A kind of multiple-energy-source combines hot-water heating system, including water tank, heat collector, air source heat pump, electric heater, water tank temperature pass
Sensor, heat collector temperature sensor, air temperature sensor, wherein
The heat collector temperature sensor is used for detecting the temperature of heat collector vacuum tube；
The air temperature sensor is used for detecting the temperature of air.
The beneficial effects of the present invention are：Using three kinds of heat collector, air source heat pump, electric heater as hot-water heating system
Supplying heat source, three kinds of confessions are selected hot-water heating system by water tank temperature sensor, heat collector temperature sensor, air temperature sensor
One or several kinds of offer foundations in thermal source, make hot-water heating system have the effect of energy-conservation.
A kind of multiple-energy-source combines hot-water heating system control method, and methods described is：
If S1 heat collector vacuum tube temperature is higher than water tank water temperature, and difference is more than the heat collector and the water tank temperature difference of setting, then
Heat collector is opened；Otherwise, heat collector closes；
If S2 water tanks water temperature is less than setting water tank temperature, step S3 is performed；Otherwise, return to step S1；
If S3 water tank temperature rise curves are unsatisfactory for temperature increase requirement, step S4 is performed；Otherwise, return to step S1；
If S4 air themperatures are more than air-source opening temperature, air source heat pump is opened；Otherwise, air source heat pump closes；
If S5 water tanks water temperature is less than setting water tank temperature, step S6 is performed；Otherwise, return to step S1；
If S6 water tank temperature rise curves are unsatisfactory for temperature increase requirement, electric heater is opened；Otherwise, electric heater closes；
S7 return to step S1, repeat above-mentioned steps.
The beneficial effects of the present invention are：Three kinds of supplying heat sources are opened according to heat collector, air source heat pump, electric heater successively
Open order and carry out condition judgment, the wherein unlocking condition of heat collector and the difference of heat collector vacuum tube temperature and water tank water temperature has
Close, the unlocking condition of air source heat pump is relevant with the gentle air themperature of Water in Water Tank, and electric heater is as the standby confession finally selected
Thermal source, ensure the safe handling environment of heat collector, coordinate the unlatching of three kinds of supplying heat sources and reach preferable combined effect, reduce heat
The energy consumption of water system.
Brief description of the drawings
The multiple-energy-source that Fig. 1 is the present invention combines hot-water heating system control method flow chart.
Embodiment
To describe the technology contents of the present invention, the objects and the effects in detail, below in conjunction with embodiment and coordinate attached
Figure is explained.
The design of most critical of the present invention is:Using three of heat collector, air source heat pump, electric heater as hot-water heating system
Kind supplying heat source, and the unlocking condition of three kinds of supplying heat sources considers respective energy-saving run feature, rather than simple consideration water tank temperature
Degree and temperature rise curve, such as, heat collector opens the difference that need to consider heat collector vacuum tube temperature and water tank water temperature, air source heat pump
Unlatching need to consider air themperature, the unlatching of three kinds of supplying heat sources is coordinated the effect for reaching energy-conservation, while improve the peace of system operation
Quan Xing.
The technical scheme is that：
A kind of multiple-energy-source combines hot-water heating system, including water tank, heat collector, air source heat pump, electric heater, water tank temperature pass
Sensor, heat collector temperature sensor, air temperature sensor, wherein
The heat collector temperature sensor is used for detecting the temperature of heat collector vacuum tube；
The air temperature sensor is used for detecting the temperature of air.
It was found from foregoing description, the beneficial effects of the present invention are：Made using heat collector, air source heat pump, electric heater
For three kinds of supplying heat sources of hot-water heating system, and it is utilized respectively water tank temperature sensor, heat collector temperature sensor, air themperature and passes
Sensor detects to water tank water temperature, the temperature of heat collector vacuum tube, air themperature, takes into full account that the heat supply of three kinds of supplying heat sources is special
Point, one or several kinds of offer foundations in three kinds of supplying heat sources are provided hot-water heating system, are closed the energy consumption of three kinds of supplying heat sources
Reason utilizes, and hot-water heating system is had the effect of energy-conservation.
Fig. 1 is refer to, a kind of multiple-energy-source combines hot-water heating system control method, and methods described is：
If S1 heat collector vacuum tube temperature is higher than water tank water temperature, and difference is more than the heat collector and the water tank temperature difference of setting, then
Heat collector is opened；Otherwise, heat collector closes；
If S2 water tanks water temperature is less than setting water tank temperature, step S3 is performed；Otherwise, return to step S1；
If S3 water tank temperature rise curves are unsatisfactory for temperature increase requirement, step S4 is performed；Otherwise, return to step S1；
If S4 air themperatures are more than air-source opening temperature, air source heat pump is opened；Otherwise, air source heat pump closes；
If S5 water tanks water temperature is less than setting water tank temperature, step S6 is performed；Otherwise, return to step S1；
If S6 water tank temperature rise curves are unsatisfactory for temperature increase requirement, electric heater is opened；Otherwise, electric heater closes；
S7 return to step S1, repeat above-mentioned steps.
It was found from foregoing description, the beneficial effects of the present invention are：Three kinds of supplying heat sources are successively according to heat collector, air-source warm
Pump, the opening sequence of electric heater carry out condition judgment, and the condition that wherein heat collector is opened only considers heat collector vacuum tube temperature
With the difference of water tank water temperature, do not consider whether water tank water temperature reaches setting water tank temperature merely, reach heat collector vacuum tube temperature
During to certain value, heat collector carries out water circulation with water tank, prevents heat collector medium temperature from spending height, damages heat collector, ensures system
The security of operation；The condition that air source heat pump is opened needs to consider water tank water temperature, water tank temperature rise curve, and Air Temperature simultaneously
Whether degree is more than air-source opening temperature, is converted into heat energy, it is necessary to which air is compressed when air source heat pump works, works as air
When temperature is less than certain value, for the energy conversion rate of air source heat pump than relatively low, energy consumption is bigger, and power consumption is bigger；Electricity adds
Hot device is that the maximum supplying heat source of energy consumption is consumed in three kinds of supplying heat sources, but have heating fast as the standby supplying heat source finally selected
The characteristics of fast and direct, when natural energy resources used in heat collector can not provide enough heating loads, and air themperature is relatively low, leads
Causing the energy conversion rate of air source heat pump, when energy consumption is bigger, opening electric heater is also relatively good selection than relatively low.
Further, the target water temperature for setting water tank temperature as water tank, number range are 40~80 DEG C.
Seen from the above description, setting water tank temperature can be arranged in 40~80 DEG C of number ranges by user as needed,
40~80 DEG C are conventional temperature range of the user using hot water, meet the use habit of user.
Further, the heat collector set is higher than water tank water temperature with the temperature that the water tank temperature difference is heat collector vacuum tube
Numerical value, number range are 5~50 DEG C.
Seen from the above description, the heat collector of setting and the water tank temperature difference, which are related between heat collector and water tank, carries out water circulation
Condition, what heat collector mainly utilized is this natural energy resources of solar energy, and temperature setting is too high, can cause in heat collector energy not
It can transmit in time to water tank, and cause other supplying heat sources to be opened, cause the waste of electric energy；Temperature setting is too low, can cause thermal-arrest
Device is too frequent with water tank water circulation, is unfavorable for the rising of water temperature in heat collector, while causes the waste of electric energy.In winter, thermal-arrest
In the case that the temperature rise of device vacuum tube is relatively slow, the heat collector of setting and the water tank temperature difference can be arranged to 5~20 DEG C, in time by vacuum tube
The heat transmission of middle accumulation is into water tank；, can be by the heat collector of setting in the case of heat collector vacuum tube temperature rise is faster in summer
20~50 DEG C are arranged to the water tank temperature difference, prevents that water circulation is frequently opened between heat collector and water tank, causes the waste of electric energy.
Further, the air-source opening temperature is the environment temperature critical value that air source heat pump is opened, and numerical value is -5
℃。
The heating energy efficiency ratio of air source heat pump at different ambient temperatures is shown in Table 1：
Table 1
| Environment temperature (DEG C) | -5 | 0 | 5 | 10 | 15 | 20 | 25 | 30 | 35 | 40 |
| Heating energy efficiency ratio (COP) | 1.5 | 2.2 | 2.7 | 3.3 | 3.7 | 4.1 | 4.2 | 4.4 | 4.6 | 4.7 |
As shown in Table 1, environment temperature is lower, and the heating energy efficiency ratio (COP) of air source heat pump is lower, and energy consumption is higher.
In addition, under operating mode, cold and hot water temperature difference is 51 DEG C, when environment temperature is 20 DEG C, the heating capacity of air source heat pump
For 17.2KW；When environment temperature is 5 DEG C, the heating capacity of air source heat pump is 11.23KW, and heating capacity during than 20 DEG C reduces
1/3 or so；When environment temperature is -5 DEG C, the heating capacity of air source heat pump is 5.75KW, and heating capacity during than 20 DEG C reduces
2/3 or so.
Seen from the above description, air-source opening temperature is related to the bar that water circulation is carried out between air source heat pump and water tank
Part, the energy consumption of air source heat pump is between heat collector and electric heater, but air source heat pump is that air is compressed into feedwater
Case heat supply, had a great influence by amblent air temperature is hot during operation, with the reduction of outdoor temperature, evaporating temperature constantly reduces, compression
Than constantly increase, displacement reduces, and as evaporating temperature reduces, refrigerant evaporates the absorbed latent heat of vaporization and also subtracted
It is small, while compression ratio increases, delivery temperature rise, the heating load of unit is gradually reduced, and COP values constantly reduce, while compressor
Run at high temperature for a long time, it is very unfavorable.When environment temperature is less than -5 DEG C, the COP of air source heat pump is less than 1.5, is opened
The energy conversion rate of air source heat pump is opened than relatively low, energy input is bigger, below this temperature, can not start air source heat pump work
For the thermal source of heating system.
Fig. 1 is refer to, embodiments of the invention one are：
A kind of multiple-energy-source combines hot-water heating system, including water tank, heat collector, air source heat pump, electric heater, water tank temperature pass
Sensor, heat collector temperature sensor, air temperature sensor, wherein
The heat collector temperature sensor is used for detecting the water temperature in heat collector supply line；
The air temperature sensor is used for detecting the temperature of air.
Fig. 1 is refer to, a kind of multiple-energy-source combines hot-water heating system control method, and fine day, the highest temperature of whole day is 15 DEG C, most
Low temperature is -10 DEG C, it is assumed that sets water tank temperature as 70 DEG C, for the heat collector set with the water tank temperature difference as 5 DEG C, air-source opens temperature
Spend for -5 DEG C, methods described is：
If S1 heat collector vacuum tube temperature is higher than water tank water temperature, and difference is more than 5 DEG C, then heat collector is opened；Otherwise, heat collector
Close；
If S2 water tanks water temperature is less than 70 DEG C, step S3 is performed；Otherwise, return to step S1；
If S3 water tank temperature rise curves are unsatisfactory for temperature increase requirement, step S4 is performed；Otherwise, return to step S1；
If S4 air themperatures are more than -5 DEG C, air source heat pump is opened；Otherwise, air source heat pump closes；
If S5 water tanks water temperature is less than setting water tank temperature, step S6 is performed；Otherwise, return to step S1；
If S6 water tank temperature rise curves are unsatisfactory for temperature increase requirement, electric heater is opened；Otherwise, electric heater closes；
S7 return to step S1, repeat above-mentioned steps.
In actual moving process, 8:00-18:00, because solar energy is sufficient, heat collector is as main supplying heat source, air-source
Heat pump is as auxiliary heat supplying source；5:00-8:00 and 18:00-23:00, because solar energy is weaker, and air themperature is higher than -5
DEG C, air source heat pump is as main supplying heat source, and heat collector and electric heater are as auxiliary thermal source；23:00-5:00, due to not having
There is solar energy, and air themperature is less than -5 DEG C, electric heater is not turned on as main supplying heat source, air source heat pump, and heat collector is made
To aid in supplying heat source.
In summary, multiple-energy-source combination hot-water heating system and control method provided by the invention, using heat collector, air-source heat
The three kinds of supplying heat sources of pump, electric heater as hot-water heating system, and it is utilized respectively water tank temperature sensor, heat collector TEMP
Device, air temperature sensor detect to water temperature, air themperature in water tank water temperature, heat collector feed pipe；Three kinds of supplying heat sources according to
The secondary opening sequence according to heat collector, air source heat pump, electric heater carries out condition judgment, and the condition that wherein heat collector is opened is not
It is whether simple consideration water tank water temperature reaches setting water tank temperature, but considers the difference of heat collector vacuum tube temperature and water tank water temperature
When value reaches certain value, heat collector carries out water circulation with water tank, prevents heat collector medium temperature from spending height, damages heat collector, ensures
The security of system operation；Heat energy is converted into, it is necessary to which air is compressed when air source heat pump works, the condition of unlatching needs
Consider whether water tank water temperature, water tank temperature rise curve, and air themperature are more than air-source opening temperature simultaneously；Electric heater conduct
The standby supplying heat source finally selected, it is that the maximum supplying heat source of energy consumption is consumed in three kinds of supplying heat sources, but with heating quickly, directly
Feature, the hot-water heating system stabilization safe for operation, and according to three kinds of supplying heat sources, each energy consumption feature judges whether to open, and has and carries
High energy source utilization rate, save the effect of the energy.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalents that bright specification and accompanying drawing content are made, or the technical field of correlation is directly or indirectly used in, similarly include
In the scope of patent protection of the present invention.
Claims (3)
1. a kind of multiple-energy-source combines hot-water heating system control method, the system includes water tank, heat collector, air source heat pump, electrical heating
Device, water tank temperature sensor, it is characterised in that
Also include heat collector temperature sensor, air temperature sensor, the heat collector temperature sensor is used for detecting heat collector
The temperature of vacuum tube；The air temperature sensor is used for detecting the temperature of air；
Described this method is：
If S1 heat collector vacuum tube temperature is higher than water tank water temperature, and difference is more than the heat collector and the water tank temperature difference of setting, then thermal-arrest
Device is opened；Otherwise, heat collector closes；
If S2 water tanks water temperature is less than setting water tank temperature, step S3 is performed；Otherwise, return to step S1；
If S3 water tank temperature rise curves are unsatisfactory for temperature increase requirement, step S4 is performed；Otherwise, return to step S1；
If S4 air themperatures are more than air-source opening temperature, air source heat pump is opened；Otherwise, air source heat pump closes；
If S5 water tanks water temperature is less than setting water tank temperature, step S6 is performed；Otherwise, return to step S1；
If S6 water tank temperature rise curves are unsatisfactory for temperature increase requirement, electric heater is opened；Otherwise, electric heater closes；
S7 return to step S1, repeat above-mentioned steps；
The heat collector set is higher than the numerical value of water tank water temperature, number range with the water tank temperature difference as the temperature of heat collector vacuum tube
For 5~50 DEG C.
2. multiple-energy-source according to claim 1 combines hot-water heating system control method, it is characterised in that the setting water tank temperature
The target water temperature for water tank is spent, number range is 40~80 DEG C.
3. multiple-energy-source according to claim 1 combines hot-water heating system control method, it is characterised in that the air-source is opened
Temperature is the environment temperature critical value that air source heat pump is opened, and numerical value is -5 DEG C.
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333562B (en) * | 2014-07-29 | 2018-05-04 | 青岛海尔空调器有限总公司 | The control method of air conditioner and its automatic operation mode |
| CN105222214B (en) * | 2015-11-05 | 2018-07-31 | 中南大学 | Solar thermal collector and air source heat pump combined heat water system and control method |
| CN105423410A (en) * | 2015-12-18 | 2016-03-23 | 佛山市晟恺热能设备有限公司 | Water heater heat pump system |
| CN108716710A (en) * | 2018-05-30 | 2018-10-30 | 广东万博电气有限公司 | Multiple-energy-source mixing hot-water supply system control method, device and equipment |
| CN111426012B (en) * | 2020-04-15 | 2021-11-02 | 珠海格力电器股份有限公司 | Heat pump control method and device for sectional control of water temperature and air conditioning unit |
| CN112413701A (en) * | 2020-10-26 | 2021-02-26 | 青岛理工大学 | Air source heat pump auxiliary electric heating grading control system and control method |
| CN112394759A (en) * | 2020-11-02 | 2021-02-23 | 佛山市水晶岛休闲设备有限公司 | Method for controlling water temperature by multi-mode temperature control system |
| CN113983544A (en) * | 2021-10-25 | 2022-01-28 | 珠海格力电器股份有限公司 | Operation control method and system and solar heat pump hot water system |
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| CN103090456A (en) * | 2012-11-29 | 2013-05-08 | 海尔集团公司 | Multi-energy combination hot water system and multi-energy control switching method |
| CN103968440A (en) * | 2013-02-01 | 2014-08-06 | 珠海格力电器股份有限公司 | Multi-heat-source hot water system |
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| JP2003050056A (en) * | 2001-08-06 | 2003-02-21 | Matsushita Electric Ind Co Ltd | Solar equipment |
| JP2005134104A (en) * | 2003-10-09 | 2005-05-26 | Matsushita Electric Ind Co Ltd | Solar system and operation method of solar system |
| CN104420850B (en) * | 2013-09-11 | 2017-02-08 | 中国石油天然气股份有限公司 | Well field raw oil heating device, heating system and heating control method |
| CN104534701A (en) * | 2014-12-17 | 2015-04-22 | 苏州工业园区设计研究院股份有限公司 | Emergency cooling protection system of solar thermal collector |
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| CN103090456A (en) * | 2012-11-29 | 2013-05-08 | 海尔集团公司 | Multi-energy combination hot water system and multi-energy control switching method |
| CN103968440A (en) * | 2013-02-01 | 2014-08-06 | 珠海格力电器股份有限公司 | Multi-heat-source hot water system |
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