CN104949192A - Energy-saving control method for floor radiant heating system comprising variable-frequency heat-pump water heater - Google Patents
Energy-saving control method for floor radiant heating system comprising variable-frequency heat-pump water heater Download PDFInfo
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- CN104949192A CN104949192A CN201510404826.9A CN201510404826A CN104949192A CN 104949192 A CN104949192 A CN 104949192A CN 201510404826 A CN201510404826 A CN 201510404826A CN 104949192 A CN104949192 A CN 104949192A
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Abstract
The invention relates to an energy-saving control method for a floor radiant heating system comprising a variable-frequency heat-pump water heater. The energy-saving control method is characterized by comprising steps as follows: a functional expression of a water supply calculating temperature Tgj of a floor and an outdoor environment temperature Tw is established by a control system through calculation according to performance of the variable-frequency heat-pump water heater and heat load characteristics of a heating room; a functional expression of a room calculating air temperature Tnj based on a thermal comfort degree of a human body and the outdoor environment temperature Tw is established by the control system; a rotating speed of a compressor of the variable-frequency heat-pump water heater is adjusted by the control system according to the difference value of a water supply actual temperature Tgs and the water supply calculating temperature Tgj, and the water supply actual calculating temperature Tgs and the water supply calculating temperature Tgj are enabled to be consistent; the opening degree of a tee proportion regulating valve is adjusted by the control system according to the difference value of a room actual air temperature Tns and a room calculating air temperature Tnj, and the room actual air temperature Tns and the room calculating air temperature Tnj are enabled to be consistent. The energy-saving control method has the advantages that the energy efficiency of the heat-pump water heater is higher, energy-saving operation is realized, the comfort degree of the human body is better and the like.
Description
Technical field
The present invention relates to the control method that a kind of frequency conversion heat pump water heater radiant floor heating system is energy-conservation.
Background technology
Teat pump boiler, as a kind of high-efficiency energy-saving heat aquatic products, is more and more applied to floor panel heating.Supply water temperature is constant because having for frequency conversion heat pump water heater, efficiency advantages of higher also starts to apply in radiant floor heating system gradually.At present no matter determine frequency or frequency conversion heat pump water heater design of radiant heating floor system waters supply/return water temperature is generally 45 DEG C/35 DEG C, room air temperature controls mostly to be realized by floor surface temperature or room air temperature control Teat pump boiler start-stop.Because the efficiency of Teat pump boiler declines with the rising of supply water temperature, and outdoor environment temperature changes greatly within a heating cycle, and the change of outdoor environment temperature is also comparatively large in one day, therefore, larger in its heating demand of different time sections difference.When outdoor environment temperature is higher, required heating demand is less, and the supply water temperature of floor heating can suitably reduce, and the efficiency of such Teat pump boiler can improve.Therefore, also someone proposes to adopt and controls floor heating supply water temperature by detecting outdoor environment temperature, realizes Teat pump boiler energy-saving run.This control mode of single employing, the temperature in room is difficult to ensure, the hot comfort of human body is under some influence.In fact, the hot comfort of human body is not only relevant with room air temperature, also relevant with the heat exchange mode in room, as when outdoor environment temperature is about-10 DEG C, adopt its room air temperature of floor panel heating can reduce about 2 DEG C than air-conditioning heating, corresponding operation of heat pump energy consumption can reduce about 10%.Under the same hot comfort condition of human body, the difference of floor panel heating room air temperature and air-conditioning heating room air themperature affects by floor surface temperature.Therefore, should the many-side such as environment temperature, human thermal comfort degree consider to run Teat pump boiler ground heating system to control outdoor, just can better realize operation of heat pump energy-conservation.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art and the control method providing a kind of frequency conversion heat pump water heater radiant floor heating system energy-conservation, it can control floor heating supply water temperature and Teat pump boiler running frequency according to outdoor environment temperature and human thermal comfort degree, realizes Teat pump boiler energy saving in running.
In order to achieve the above object, the present invention realizes like this, it is the energy-conservation control method of a kind of frequency conversion heat pump water heater radiant floor heating system, it is characterized in that frequency conversion heat pump water heater radiant floor heating system comprises frequency conversion heat pump water heater, storage tank, threeway ratio adjusting valve, water circulating pump, hot-water coil pipe, control system, storage tank temperature sensor, room air temperature sensor and outdoor environment temperature sensor; Temperature in the storage tank of described storage tank temperature sensor senses counts water supply actual temperature T
gs, the room temperature of described room air temperature sensor sensing counts room actual air temperature T
ns, the outdoor temperature of described outdoor environment temperature sensor sensing counts outdoor environment temperature T
w, it is as follows that its energy-saving control method comprises step:
(a) described control system according to the thermic load characteristic of the performance of frequency conversion heat pump water heater and heating room, by calculating the water supply accounting temperature T setting up floor
gjwith outdoor environment temperature T
wbetween functional expression (I);
B room that () described control system is set up based on human thermal comfort degree calculates air themperature T
njwith outdoor environment temperature T
wbetween functional expression (II);
C () described control system is according to water supply actual temperature T
gswith water supply accounting temperature T
gjdifference, regulate the compressor rotary speed of frequency conversion heat pump water heater, make water supply Practical Calculation temperature T
gswith water supply accounting temperature T
gjreach unanimity;
D () described control system is according to room actual air temperature T
nsair themperature T is calculated with room
njdifference, regulate the aperture of threeway ratio adjusting valve, make room actual air temperature T
nsair themperature T is calculated with room
njreach unanimity.
Described control system can also set up floor surface accounting temperature T
djwith outdoor environment temperature T
wfunctional expression and room calculate air themperature T
njwith outdoor environment temperature T
wfunctional expression, and by floor surface actual temperature T
dswith floor surface accounting temperature T
djcomparison regulate the compressor rotary speed of frequency conversion heat pump water heater, by room actual air temperature T
nsair themperature T is calculated with room
njcomparison regulate the aperture of threeway ratio adjusting valve.
The thermal source of described frequency conversion heat pump water heater can be with air, water or underground heat.
Compared with prior art, tool has the following advantages in the present invention:
(1) when outdoor environment temperature is higher, heating system supply water temperature can suitably reduce, and Teat pump boiler efficiency is higher, realizes energy saving in running;
(2) under the condition of guarantor's body heat comfort level, room air temperature can suitably reduce, and reduces room thermic load, realizes energy saving in running;
(3) heating coil pipe hot water is in comparatively large discharge flow regime all the time, and better, human thermal comfort degree is better for floor temperature uniformity and stability.
Accompanying drawing explanation
Fig. 1 is heating system structure principle chart of the invention process.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
As shown in Figure 1, it is the energy-conservation control method of a kind of frequency conversion heat pump water heater radiant floor heating system, and frequency conversion heat pump water heater radiant floor heating system comprises frequency conversion heat pump water heater 1, storage tank 2, threeway ratio adjusting valve 3, water circulating pump 4, hot-water coil pipe 5, control system 6, storage tank temperature sensor 7, room air temperature sensor 8 and outdoor environment temperature sensor 9; Temperature in the storage tank 2 that described storage tank temperature sensor 7 is responded to counts water supply actual temperature T
gs, the room temperature that described room air temperature sensor 8 is responded to counts room actual air temperature T
ns, the outdoor temperature that described outdoor environment temperature sensor 9 is responded to counts outdoor environment temperature T
w, it is as follows that its energy-saving control method comprises step:
(1) described control system 6 is for the thermic load characteristic of concrete selected frequency conversion heat pump water heater 1 and heating room, by calculating the water supply accounting temperature T that can set up floor
gj(being also the accounting temperature of storage tank) and outdoor environment temperature T
wbetween functional expression I; Calculating for simplifying, can Linearity Formula be summarized as: T
gj=a-b*T
w, consider the deviation of theory calculate and actual conditions, water supply accounting temperature T
gjcan improve 3 DEG C on the basis of calculated value, be also T
gj=a-b*T
w+ 3(functional expression I), and T
gj≤ 45 DEG C.Because whole day outdoor environment temperature changes greatly, detection outdoor environment temperature T per hour can be adopted
wonce, water supply accounting temperature T is recalculated
gjonce;
(2) room that described control system 6 is set up based on human thermal comfort degree calculates air themperature T
njwith outdoor environment temperature T
wbetween functional expression II; Air themperature T is calculated with air conditioning and heating room
njbe 18 DEG C for Studies of Human Body Heat comfort level temperature, adopt floor panel heating room to calculate air themperature T
njt can be reduced to
nj=18-0.1*(10-T
w) (functional expression II);
(3) according to water supply actual temperature T
gswith water supply accounting temperature T
gjdifference, regulate the compressor rotary speed of frequency conversion heat pump water heater 1, make water supply Practical Calculation temperature T
gswith water supply accounting temperature T
gjreach unanimity.
(4) according to room actual air temperature T
nsair themperature T is calculated with room
njdifference, regulate the aperture of threeway ratio adjusting valve 3, make room actual air temperature T
nsair themperature T is calculated with room
njreach unanimity.Water circulating pump 4 is in running status all the time.
In the present embodiment, described control system 6 can also set up floor surface accounting temperature T
djwith outdoor environment temperature T
wfunctional expression and room calculate air themperature T
njwith outdoor environment temperature T
wfunctional expression, and by floor surface actual temperature T
dswith floor surface accounting temperature T
djcomparison regulate the compressor rotary speed of frequency conversion heat pump water heater 1, by room actual air temperature T
nsair themperature T is calculated with room
njcomparison regulate the aperture of threeway ratio adjusting valve 3.
In the present embodiment, the thermal source of described frequency conversion heat pump water heater 1 can be air, water or underground heat.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and distortion to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (3)
1. the control method that frequency conversion heat pump water heater radiant floor heating system is energy-conservation, is characterized in that frequency conversion heat pump water heater radiant floor heating system comprises frequency conversion heat pump water heater (1), storage tank (2), threeway ratio adjusting valve (3), water circulating pump (4), hot-water coil pipe (5), control system (6), storage tank temperature sensor (7), room air temperature sensor (8) and outdoor environment temperature sensor (9); Temperature in the storage tank (2) that described storage tank temperature sensor (7) is responded to counts water supply actual temperature T
gs, the room temperature that described room air temperature sensor (8) is responded to counts room actual air temperature T
ns, the outdoor temperature that described outdoor environment temperature sensor (9) is responded to counts outdoor environment temperature T
w, it is as follows that its energy-saving control method comprises step:
A the performance of () described control system (6) according to frequency conversion heat pump water heater (1) and the thermic load characteristic of heating room, by calculating the water supply accounting temperature T setting up floor
gjwith outdoor environment temperature T
wbetween functional expression (I);
B room that () described control system (6) is set up based on human thermal comfort degree calculates air themperature T
njwith outdoor environment temperature T
wbetween functional expression (II);
C () described control system (6) is according to water supply actual temperature T
gswith water supply accounting temperature T
gjdifference, regulate frequency conversion heat pump water heater (1) compressor rotary speed, make water supply Practical Calculation temperature T
gswith water supply accounting temperature T
gjreach unanimity;
D () described control system (6) is according to room actual air temperature T
nsair themperature T is calculated with room
njdifference, regulate threeway ratio adjusting valve (3) aperture, make room actual air temperature T
nsair themperature T is calculated with room
njreach unanimity.
2. frequency conversion heat pump water heater radiant floor heating system energy-saving control method according to claim 1, is characterized in that described control system (6) can also set up floor surface accounting temperature T
djwith outdoor environment temperature T
wfunctional expression and room calculate air themperature T
njwith outdoor environment temperature T
wfunctional expression, and by floor surface actual temperature T
dswith floor surface accounting temperature T
djcomparison regulate frequency conversion heat pump water heater (1) compressor rotary speed, by room actual air temperature T
nsair themperature T is calculated with room
njcomparison regulate threeway ratio adjusting valve (3) aperture.
3. frequency conversion heat pump water heater radiant floor heating system energy-saving control method according to claim 1, is characterized in that the thermal source of described frequency conversion heat pump water heater (1) can be with air, water or underground heat.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510404826.9A CN104949192A (en) | 2015-07-13 | 2015-07-13 | Energy-saving control method for floor radiant heating system comprising variable-frequency heat-pump water heater |
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| CN201510404826.9A CN104949192A (en) | 2015-07-13 | 2015-07-13 | Energy-saving control method for floor radiant heating system comprising variable-frequency heat-pump water heater |
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Cited By (5)
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|---|---|---|---|---|
| CN106016760A (en) * | 2016-07-01 | 2016-10-12 | 顺德职业技术学院 | Energy-saving control method for self-adaptation frequency-conversion heat pump hot water heating system |
| CN106091103A (en) * | 2016-07-01 | 2016-11-09 | 顺德职业技术学院 | Constant temperature water supply frequency heat-pump hot-water Energy conservation measures in heating system surely |
| CN108131806A (en) * | 2017-12-21 | 2018-06-08 | 海信（山东）空调有限公司 | Temprature control method and line control machine |
| CN112303705A (en) * | 2020-09-24 | 2021-02-02 | 株洲麦格米特电气有限责任公司 | Heating heat pump operation control method, device, controller and computer readable storage medium |
| CN112344461A (en) * | 2020-11-04 | 2021-02-09 | 青岛海信日立空调系统有限公司 | Water system air conditioner |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106016760A (en) * | 2016-07-01 | 2016-10-12 | 顺德职业技术学院 | Energy-saving control method for self-adaptation frequency-conversion heat pump hot water heating system |
| CN106091103A (en) * | 2016-07-01 | 2016-11-09 | 顺德职业技术学院 | Constant temperature water supply frequency heat-pump hot-water Energy conservation measures in heating system surely |
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| CN108131806A (en) * | 2017-12-21 | 2018-06-08 | 海信（山东）空调有限公司 | Temprature control method and line control machine |
| CN112303705A (en) * | 2020-09-24 | 2021-02-02 | 株洲麦格米特电气有限责任公司 | Heating heat pump operation control method, device, controller and computer readable storage medium |
| CN112344461A (en) * | 2020-11-04 | 2021-02-09 | 青岛海信日立空调系统有限公司 | Water system air conditioner |
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Application publication date: 20150930 |
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