CN109631439A - A kind of air source heat pump based on temperature and humidity two-dimentional relation effectively presses down white method - Google Patents

A kind of air source heat pump based on temperature and humidity two-dimentional relation effectively presses down white method Download PDF

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CN109631439A
CN109631439A CN201811603263.6A CN201811603263A CN109631439A CN 109631439 A CN109631439 A CN 109631439A CN 201811603263 A CN201811603263 A CN 201811603263A CN 109631439 A CN109631439 A CN 109631439A
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temperature
water capacity
humidity
air
formula
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CN109631439B (en
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王智伟
魏鹏
赵健
孙婷婷
刘艳峰
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Xian University of Architecture and Technology
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/006—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass for preventing frost
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/02—Humidity

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses a kind of air source heat pumps based on temperature and humidity two-dimentional relation effectively to press down white method, and the present invention analyzes the driving force of mass transfer: water capacity is poor, determines that water capacity difference is only related with outside air temperature, relative humidity and evaporating temperature.On this basis, the coupling function of building unit evaporating temperature and outside air temperature and relative humidity is proposed for target with suppression frost.According to constructed objective function, constraint condition and boundary condition, solution obtains the two-dimentional relation formula of evaporating temperature Yu air dry-bulb temperature and relative humidity.In known air temperature and relative humidity, unit at this time is calculated according to the coupled relation formula of the evaporating temperature and aerial temperature and humidity that acquire and runs the evaporating temperature value that need to be arranged, adjusts unit evaporating temperature, to realize effectively suppression frost.

Description

A kind of air source heat pump based on temperature and humidity two-dimentional relation effectively presses down white method
Technical field
The invention belongs to air source heat pumps effectively to press down white technical field, and in particular to a kind of based on temperature and humidity two-dimentional relation Effectively press down white method.
Background technique
Air source heat pump has many advantages, such as that flexible for installation, operating cost is low and energy conservation and environmental protection, and application is more and more extensive, preceding Scape is wide.But air source heat pump has the shortcomings that well-known, outdoor coil pipe used fin surface easy knot when heating in winter Frost causes heating capacity to decline.
The most directly related several factors of the frosting on evaporator fin surface have the temperature of air, relative humidity, fin Surface temperature, the research now concerning suppression frost are carried out mainly around these factors.Pressing down white mode mainly has: it is empty to reduce mainstream The water capacity system research of gas；The research that additional uniform electric field magnetic interference frost is formed；The modified reduction water droplet adhesive rate in surface Research.All there is different drawbacks during practical application for these modes: 1) with the growth of time, the suction of desiccant Wet ability constantly weakens, and presses down frost effect and also gradually fails；2) process of design and the operation of system is comparatively laborious, to make entire The system of unit is excessively complicated, cannot be widely applied in the actual moving process of unit；3) under general outdoor environment, Surface modification coatings are able to maintain long-time frost-free, but effect is unobvious when inclement condition, in addition, the table after modified Face is very soft, the not shock resistance under rugged environment.
Therefore it need to seek a kind of unit actual moving process is more general, the stronger suppression frost mode of exploitativeness, slave It is a kind of feasible method that the setting mechanism of evaporating temperature of group itself, which sets out and carries out the research of suppression frost,.Existing net for air-source heat pump units The setting of evaporating temperature is only the monodrome sexual intercourse by evaporating temperature and air dry-bulb temperature, under this relationship, unit Evaporating temperature do not change with the variation of outside atmosphere relative humidity.At identical temperature, when outside atmosphere relative humidity increases When, the water capacity of atmosphere can also increase, but the evaporating temperature of unit is constant, corresponding saturated vapor pressure and water capacity Will not change, this results in difference between the two --- water capacity difference will increase with the raising of relative air humidity Greatly, so that frost also will be serious.Therefore, this monodrome sexual intercourse setting is defective from the perspective of Cong Yishuan. For the defect of this setting mechanism, from the driving force of mass transfer --- water capacity difference is started with, building unit evaporating temperature and outdoor The coupling function of atmospheric temperature and relative humidity carries out suppression frost on this basis and is of great significance.
Summary of the invention
To solve drawbacks described above existing in the prior art, the purpose of the present invention is to provide one kind based on temperature and humidity two dimension The air source heat pump of relationship presses down white method, improves the existing defect problem for pressing down white technology of net for air-source heat pump units.This method makes up The defect of existing unit evaporating temperature monodrome sexual intercourse setting mechanism considers air dry bulb temperature in the setting of evaporating temperature Degree and two kinds of factors of relative humidity change unit evaporating temperature with air themperature and relative humidity variations, to change water capacity Difference.As the increase of temperature and relative humidity reduces, mass transfer driving force --- water capacity is poor, realizes the purpose of suppression frost.
The present invention is realized by following technical proposals.
A kind of air source heat pump based on temperature and humidity two-dimentional relation effectively presses down white method, includes the following steps:
Step 1: according to frost Formation Mechanism, analysis frosting water capacity is poor, obtains water capacity difference and air dry-bulb temperature ta, it is opposite HumidityWith evaporating temperature teRelationship；
Step 2: with suppression frost for target, establishing evaporating temperature teWith air dry-bulb temperature ta, relative humidityCoupled relation Objective function, and set constraint condition；
Step 3: providing the boundary condition that objective function solves when frosting starting point and relative humidity are 100%；
Step 4: according to objective function, constraint condition and boundary condition, solution obtains evaporating temperature and air dry-bulb temperature With relative humidity two-dimentional relation formula；
Step 5: according to the coupled relation formula of the evaporating temperature and aerial temperature and humidity acquired, in known air temperature and relatively When humidity, unit at this time is calculated according to relational expression and runs the evaporating temperature value that need to be arranged, adjusts unit evaporating temperature, realizes Suppression frost.
Further, in the step 1, water capacity difference and air dry-bulb temperature t are obtaineda, relative air humidityWith evaporation temperature Spend teRelationship, steps are as follows:
1a) water capacity difference is the difference of humid air water capacity and frost layer surface water capacity, the size of water capacity in humid air Are as follows:
In formula, PsaFor the saturated vapor pressure in air, Pa；B is atmospheric pressure, Pa；
For frost layer surface, it is assumed that the air on frost layer surface is saturated air, therefore frost layer surface water capacity are as follows:
Therefore, the size of water capacity difference are as follows:
1b) relationship between saturated vapor pressure and temperature has:
(6.42+7.2 × 10 Ps=exp-2Ta-2.71×10-4Ta 2+7.23×10-7Ta 3),
That is the saturated vapor pressure of vapor is only related to steam temperature, and the influence factor of water capacity difference mainly has air dry Ball temperature ta, relative air humidityWith evaporating temperature te。
Further, in the step 2, the specific steps are as follows:
Evaporating temperature t 2a) is established for target with suppression frosteWith air dry-bulb temperature ta, relative air humidityCoupled relation Objective function:
Set constraint condition one: 2b) with νexRepresent new frosting rate, Δ dexIt is poor to represent new water capacity, then frosting speed The mathematic(al) representation of rate change curve are as follows:
With
Water capacity difference variation tendency mathematic(al) representation are as follows:
It 2c) sets constraint condition two: under same relative humidity, in order to contain the growth of water capacity difference, should also enable fin The water capacity on surface has following growth trend:
In formula, dexFor the water capacity of fin surface saturated air, g/kg. is done；
It 2d) sets constraint condition three: the bigger principle of white ratio being pressed down using the more serious area of frosting, gets over unit in frosting The decaying of water capacity difference is more serious under serious weather conditions, mathematic(al) representation are as follows:
In formula: Δ d is that the water capacity under monodrome sexual intercourse is poor, and g/kg. is dry.
Further, in the step 3, the specific steps are as follows:
3a) with relative humidityFor 55% as the starting point calculated, enable:
In formula: Δ dexPoor for water capacity new under coupled relation, g/kg. is dry；Δ d is the water capacity under monodrome sexual intercourse Difference, g/kg. are dry；
3b) calculation of boundary conditions, whenWhen, it enables:
In formula, K is minimum allowable heat transfer temperature difference, DEG C.
Further, in the step 4, water capacity difference and air dry-bulb temperature and relative humidity relational expression are as follows:
In formula, Δ dexPoor for water capacity new under coupled relation, g/kg. is dry；A, B, C are constant.
Further, in the step 4, being integrated to required relational expression just can be obtained water capacity difference and air themperature and wet Coupled relation formula between degree:
In formula, Δ d is that water capacity is poor, and g/kg. is dry；A, B, C, D, E are constant.
Further, in the step 4, when calculating the corresponding relationship between variable, using 0.5 DEG C as warm from -16 DEG C to 6 DEG C Material calculation is spent, using 5% as humidity material calculation from 55% to 100%.
Further, in the step 4, the data of calculated result are fitted, the steaming of coupling aerial temperature and humidity can be obtained Send out temperature expression formula, the concrete form of function are as follows:
In formula: a, b, c, d are constant.
The present invention has the advantages that due to taking above technical scheme
1) compared with having the setting of evaporating temperature, this method is added in the setting of net for air-source heat pump units evaporating temperature This parameter of relative air humidity sets evaporation by the two-dimentional coupled relation of air themperature, relative humidity and evaporating temperature Temperature.Under same air themperature, relative humidity is bigger, and evaporating temperature setting value is higher, reduces heat transfer temperature difference, realizes and presses down white mesh 's.
2) The present invention gives the two-dimentional relation formulas that evaporating temperature is coupled with air themperature and relative humidity, run in unit When, can it is simple according to unit local environment, easily and efficiently calculate reasonable evaporating temperature value, unit is adjusted, it is real Now dynamic presses down the operation of frost.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, not Inappropriate limitation of the present invention is constituted, in the accompanying drawings:
Fig. 1 is that the present invention is based on the Technology Roadmaps of the white method of the suppression of temperature and humidity two-dimentional relation；
Fig. 2 is the frosting rate variation diagram that expectation reaches；
Fig. 3 is desired water capacity difference variation diagram；
Fig. 4 is starting pointWhen boundary condition set schematic diagram；
Fig. 5 isWhen boundary condition set schematic diagram；
Fig. 6 (a)-(d) is the comparative analysis that heat transfer temperature difference changes front and back water capacity difference；
Wherein: Fig. 6 (a) be air themperature be at -16 DEG C water capacity difference comparison；Fig. 6 (b) is that air themperature is -13 DEG C Under water capacity difference comparison；Fig. 6 (c) be air themperature be at -10 DEG C water capacity difference comparison；Fig. 6 (d) is that air themperature is -7 Water capacity difference comparison at DEG C；
Fig. 7 (a)-(d) heat transfer temperature difference changes the comparative analysis of front and back frosting rate.
Wherein: Fig. 7 (a) be air themperature be at -16 DEG C frosting rate comparison；Fig. 7 (b) is that air themperature is -13 DEG C Under frosting rate comparison；Fig. 7 (c) be air themperature be at -10 DEG C frosting rate comparison；Fig. 7 (d) is that air themperature is -7 Frosting rate comparison at DEG C.
Specific embodiment
Below in conjunction with attached drawing and specific embodiment, the present invention will be described in detail, herein illustrative examples of the invention And explanation is used to explain the present invention, but not as a limitation of the invention.
As shown in Figure 1, the present invention is based on the air source heat pumps of temperature and humidity two-dimentional relation effectively to press down white method, including walk as follows It is rapid:
Step 1: according to frost Formation Mechanism, analysis frosting water capacity is poor, obtains water capacity difference and air dry-bulb temperature ta, it is opposite HumidityWith evaporating temperature teRelationship；
(1) water capacity difference is the difference of humid air water capacity and frost layer surface water capacity, the size of water capacity in humid air Are as follows:
In formula, PsaFor the saturated vapor pressure in air, Pa；B is atmospheric pressure, Pa；
For frost layer surface, it is assumed that the air on frost layer surface is saturated air, therefore frost layer surface water capacity are as follows:
Therefore, the size of water capacity difference are as follows:
(2) can be seen that by water capacity difference formula, the timing of atmospheric pressure one, water capacity difference only with the relative humidity of air, wet The saturated vapor pressure of air is related with the white saturated vapor pressure on surface.Relationship between saturated vapor pressure and temperature has:
Ps=exp (6.42+7.2 × 10-2 × Ta-2.71×10-4×Ta 2+7.23×10-7×Ta 3), i.e. vapor Saturated vapor pressure is only related to steam temperature, analyze the influence factor of water capacity difference mainly has air dry-bulb temperature ta, it is empty Gas relative humidityWith evaporating temperature te。
(3) water capacity difference is positively correlated with air themperature and relative humidity, negatively correlated with evaporating temperature.
Step 2: with suppression frost for target, establishing evaporating temperature and air dry-bulb temperature ta, relative air humidityCoupled relation Objective function, and set constraint condition.
(1) evaporating temperature and air dry-bulb temperature t are established for target with suppression frosta, relative air humidityCoupled relation Objective function, it is desirable that the objective function of solution are as follows:
(2) it sets constraint condition one: when solving new correlation, providing desired frosting rate change curve, see attached Fig. 2.With νexRepresent new frosting rate, Δ dexIt is poor to represent new water capacity.Frosting rate change curve can use number in attached drawing 2 FormWithTo describe.The same frosting rate of variation tendency of water capacity difference, is shown in attached drawing 3.
Water capacity difference variation tendency mathematic(al) representation are as follows:
(3) set constraint condition two: under same relative humidity, the water capacity of humid air with the raising of air themperature and Increase, therefore the growth in order to contain water capacity difference, also the water capacity of fin surface should be enabled to have following growth trend:
In formula, dexIt is the water capacity of fin surface saturated air, the surface temperature with fin is monodrome sexual intercourse, g/kg. It is dry.
(4) set constraint condition three: in frosting region, temperature and relative humidity are higher, and frosting is more serious.This suppression frost method The bigger principle of white ratio is pressed down using the more serious area of frosting, even if unit water capacity under the more serious weather conditions of frosting is poor Decaying it is more serious, mathematical expression form is
In formula: Δ d is that the water capacity under monodrome sexual intercourse is poor, and g/kg. is dry.
Step 3: providing the boundary condition that objective function solves when frosting starting point and relative humidity are 100%.
(1) when determining isodrosotherm, corresponding relative humidity is different under different air dry-bulb temperature, strictly, Frosting critical humidity at a temperature of different dry bulbs is different.To simplify the calculation, this method is unified is made with relative humidity for 55% For the starting point of calculating.The setting of starting point design conditions is as shown in Fig. 4, whenWhen, it enables:
In formula: Δ dexPoor for water capacity new under coupled relation, g/kg. is dry；Δ d is the water capacity under monodrome sexual intercourse Difference, g/kg. are dry；taFor air dry-bulb temperature, DEG C；For relative air humidity, %.
(2) usually heat transfer temperature difference can be reduced to 2~4 DEG C, it is contemplated that the initial cost of equipment, heat transfer temperature difference existWhen Accessible minimum value is 4 DEG C.The setting of calculation of boundary conditions is as shown in Fig. 5, whenWhen, it enables:
Step 4: solution obtains evaporating temperature and air dry-bulb temperature and relative humidity two-dimentional relation formula.
(1) by convenience of calculation, in the form of simple thought, under conditions of meeting aforementioned constraint condition, to water capacity difference become The functional form of rate do it is assumed hereinafter that, as a general solution for solving equation, mathematic(al) representation is as follows:
In formula, Δ dexPoor for water capacity new under coupled relation, g/kg. is dry；A, B, C are constant.
Above formula combination boundary condition acquires each constant value in general solution:
A=58.9；B=0.164；C=5.
(2) required general solution is integrated and water capacity difference and the coupled relation between air themperature and humidity just can be obtained Formula:
(3) functional relation between evaporating temperature and temperature and relative humidity can not directly be calculated, this method is by containing wet The calculating formula of poor Δ d and the coupled relation formula of water capacity difference and air themperature and relative humidity are measured, evaporating temperature and air are acquired One-to-one relationship between temperature, relative humidity, so that fitting obtains specific function expression.
(4) when calculating the corresponding relationship between variable, using 0.5 DEG C as temperature computation step-length from -16 DEG C to 6 DEG C, from 55% to 100%, using 5% as humidity material calculation, amounts to the data for calculating 460 state points, the partial results of calculating such as table 1 It is shown.
Evaporating temperature value (unit: DEG C) under the different temperature and humidity of table 1 are corresponding
(5) data of calculated result are fitted, the evaporating temperature expression formula of coupling aerial temperature and humidity, function can be obtained Concrete form are as follows:
Related coefficient is R2=0.9986.
Step 5: according to the coupled relation formula of the evaporating temperature and aerial temperature and humidity acquired, in known air temperature and relatively When humidity, unit at this time is calculated according to relational expression and runs the evaporating temperature value that need to be arranged, adjusts unit evaporating temperature, realizes Suppression frost.
By taking the Tibet area Hongyuan County of river as an example, unit is arranged in evaporating temperature relational expression of the unit according to coupling aerial temperature and humidity The evaporating temperature value of operation.Comparison coupling front and back evaporating temperature value, the situation of change of water capacity difference and frosting rate.
(1) evaporating temperature changes
The entire heating season in Hongyuan County shares 5448 hours, before coupling relative humidity by when evaporating temperature be
tei=0.83 × tai-10.26
In formula: taiFor Hongyuan County heating season 5448 hours by when air themperature, DEG C；teiFor corresponding to dry bulb temperature The unit evaporating temperature of degree, DEG C；First hour when heating season starts is indicated when i=1, and so on；
After coupling by when evaporating temperature are as follows:
The evaporating temperature average rate of change after coupling is calculated by following formula:
Hongyuan County is calculated separately in 5448 small evaporating temperature at present, is sent out by the comparison to coupling front and back evaporating temperature Existing, after evaporating temperature is coupled with the relative humidity of air, unit averagely rises in the evaporating temperature of entire heating season 21.5%.
(2) water capacity difference changes
Heat transfer temperature difference is associated with after relative humidity, and most directly apparent effect is exactly the influence to water capacity difference, for more The situation of change of water capacity difference under different temperatures is significantly analyzed, selected part operating condition carries out the water capacity difference of variation front and back Analysis is compared, and as shown in attached drawing 6 (a)-(d), calculates all operating point in Hongyuan County, finds the relatively wet of evaporating temperature and air After degree coupling, average moisture content difference has dropped 27.3%.
(3) frosting rate changes
Carrying out the associated final purpose of heat transfer temperature difference is to reduce frosting rate, and then reduce the whole frosting frequency of unit, To improve the overall performance that unit is run in winter.So the drop-out value of frosting rate is the most straight of evaluation this method applicability The index connect.Frosting rate under selected part operating condition is calculated, under different operating conditions frosting rate variation front and back to score Analysis is as shown in attached drawing 7 (a)-(d).
From in attached drawing 7 (a)-(d) as can be seen that unit evaporating temperature be associated with the relative humidity of air after, not As the growth trend of the increase frosting rate of relative humidity obviously becomes flat under same dry-bulb temperature.The growth of frosting rate Rate also with relative humidity increase and gradually become smaller.When relative humidity is 100%, the growth rate of frosting rate is almost 0. Calculate the frosting rate that heating season 5448 operating point evaporating temperatures in Hongyuan County couple front and back with relative air humidity, opposing coupler Before, frosting rate averagely has dropped 32.4% after coupling.
The present invention is not limited to the above embodiments, on the basis of technical solution disclosed by the invention, the skill of this field For art personnel according to disclosed technology contents, one can be made to some of which technical characteristic by not needing creative labor A little replacements and deformation, these replacements and deformation are within the scope of the invention.

Claims (8)

1. a kind of air source heat pump based on temperature and humidity two-dimentional relation effectively presses down white method, which is characterized in that include the following steps:
Step 1: according to frost Formation Mechanism, analysis frosting water capacity is poor, obtains water capacity difference and air dry-bulb temperature ta, relative humidityWith evaporating temperature teRelationship；
Step 2: with suppression frost for target, establishing evaporating temperature teWith air dry-bulb temperature ta, relative humidityThe target of coupled relation Function, and set constraint condition；
Step 3: providing the boundary condition that objective function solves when frosting starting point and relative humidity are 100%；
Step 4: according to objective function, constraint condition and boundary condition, solution obtains evaporating temperature and air dry-bulb temperature and phase To humidity two-dimentional relation formula；
Step 5: according to the two-dimentional relation formula of the evaporating temperature and aerial temperature and humidity acquired, in known air temperature and relative humidity When, unit at this time is calculated according to relational expression and runs the evaporating temperature value that need to be arranged, adjusts unit evaporating temperature, realizes suppression Frost.
2. a kind of air source heat pump based on temperature and humidity two-dimentional relation according to claim 1 effectively presses down white method, special Sign is, in the step 1, obtains water capacity difference and air dry-bulb temperature ta, relative air humidityWith evaporating temperature tePass System, steps are as follows:
1a) water capacity difference is the difference of humid air water capacity and frost layer surface water capacity, the size of water capacity in humid air are as follows:
In formula, PsaFor the saturated vapor pressure in air, Pa；B is atmospheric pressure, Pa；
For frost layer surface, it is assumed that the air on frost layer surface is saturated air, therefore frost layer surface water capacity are as follows:
Therefore, the size of water capacity difference are as follows:
1b) relationship between saturated vapor pressure and temperature has:
(6.42+7.2 × 10 Ps=exp-2Ta-2.71×10-4Ta 2+7.23×10-7Ta 3),
That is the saturated vapor pressure of vapor is only related to steam temperature, and the influence factor of water capacity difference mainly has air dry bulb temperature Spend ta, relative air humidityWith evaporating temperature te。
3. a kind of air source heat pump based on temperature and humidity two-dimentional relation according to claim 1 effectively presses down white method, special Sign is, in the step 2, the specific steps are as follows:
Evaporating temperature t 2a) is established for target with suppression frosteWith air dry-bulb temperature ta, relative air humidityThe target of coupled relation Function:
Set constraint condition one: 2b) with νexRepresent new frosting rate, Δ dexIt is poor to represent new water capacity, then frosting rate becomes Change the mathematic(al) representation of curve are as follows:
With
Water capacity difference variation tendency mathematic(al) representation are as follows:
It 2c) sets constraint condition two: under same relative humidity, in order to contain the growth of water capacity difference, should also enable fin surface Water capacity have following growth trend:
In formula, dexFor the water capacity of fin surface saturated air, g/kg is done；
It 2d) sets constraint condition three: the bigger principle of white ratio being pressed down using the more serious area of frosting, keeps unit more serious in frosting Weather conditions under water capacity difference decaying it is more serious, mathematic(al) representation are as follows:
In formula: Δ d is that the water capacity under monodrome sexual intercourse is poor, and g/kg. is dry.
4. a kind of air source heat pump based on temperature and humidity two-dimentional relation according to claim 1 effectively presses down white method, special Sign is, in the step 3, the specific steps are as follows:
3a) with relative humidityFor 55% as the starting point calculated, enable:
In formula: Δ dexPoor for water capacity new under coupled relation, g/kg. is dry；Δ d is that the water capacity under monodrome sexual intercourse is poor, g/ Kg is dry；
3b) calculation of boundary conditions, whenWhen, it enables:
In formula, K is minimum allowable heat transfer temperature difference, DEG C.
5. a kind of air source heat pump based on temperature and humidity two-dimentional relation according to claim 1 effectively presses down white method, special Sign is, in the step 4, water capacity difference and air dry-bulb temperature and relative humidity relational expression are as follows:
In formula, Δ dexPoor for water capacity new under coupled relation, g/kg is dry；A, B, C are constant.
6. a kind of air source heat pump based on temperature and humidity two-dimentional relation according to claim 1 effectively presses down white method, special Sign is, in the step 4, being integrated to required relational expression just be can be obtained between water capacity difference and air themperature and humidity Coupled relation formula:
In formula, Δ d is that water capacity is poor, and g/kg is dry；A, B, C, D, E are constant.
7. a kind of air source heat pump based on temperature and humidity two-dimentional relation according to claim 1 effectively presses down white method, special Sign is, in the step 4, when calculating the corresponding relationship between variable, using 0.5 DEG C as temperature computation step from -16 DEG C to 6 DEG C It is long, using 5% as humidity material calculation from 55% to 100%.
8. a kind of air source heat pump based on temperature and humidity two-dimentional relation according to claim 1 effectively presses down white method, special Sign is, in the step 4, is fitted to the data of calculated result, can obtain the evaporating temperature table of coupling aerial temperature and humidity Up to formula, the concrete form of function are as follows:
In formula: a, b, c, d are constant.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111947357A (en) * 2020-07-17 2020-11-17 青岛海尔新能源电器有限公司 Temperature adjusting method and water heater
CN112665118A (en) * 2020-12-22 2021-04-16 珠海格力电器股份有限公司 Defrosting control method and device of heat pump unit, storage medium and heat pump unit

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