CN109780914A - Phase-change accumulation energy heat-exchange system and the method for heating water - Google Patents
Phase-change accumulation energy heat-exchange system and the method for heating water Download PDFInfo
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- CN109780914A CN109780914A CN201910179713.1A CN201910179713A CN109780914A CN 109780914 A CN109780914 A CN 109780914A CN 201910179713 A CN201910179713 A CN 201910179713A CN 109780914 A CN109780914 A CN 109780914A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Abstract
The invention discloses a kind of phase-change accumulation energy heat-exchange system and the methods for heating water, belong to energy savings technical field.The phase-change accumulation energy heat-exchange system includes fluid reservoir, heat pump, heat exchange tank, water collector and water segregator, fluid reservoir outlet is connected to heat pump entrance, heat pump outlet is connected to the lower end of heat exchange tank, water collector is connected to the top of heat exchange tank, water segregator and fluid reservoir import are connected to the bottom end of heat exchange tank, short transverse is provided with multi-layer phase change material barrier in heat exchange tank, and the inner wall interval of phase-change material baffle and heat exchange tank is arranged.Fluid reservoir is used to store heat transport fluid, heating thermal carrier fluid at steam and is pumped into heat exchange tank by heat pump, steam is bottom-up to heat baffle, fluid reservoir is flow back into after condensation again, water collector delivers water into the top of heat exchange tank, it exchanges heat with baffle, hot water passes through water segregator certainly and is transported at user.Good effect of heat exchange of the present invention, and heat transport fluid can recycle, and economize on resources.
Description
Technical field
The present invention relates to the energy savings technical field more particularly to a kind of phase-change accumulation energy heat-exchange system and using the system into
The method of row heating water.
Background technique
Traditional phase-change material heat-storing device is mostly being simply filled with for phase-change material, and heat accumulation efficiency and the heat transfer uniformity are also not
Enough height.Traditional phase-change material heat-accumulating process is mostly that direct electro heating either liquid phase fluid flows through pipeline or gap heating tank
The phase-change material that intracorporal phase-change material either encapsulates.It is too fast due to using electric heating that phase-change material temperature is be easy to cause to increase
And phenomena such as being more than the maximum temperature upper limit allowed, material is caused to decompose, the serious service life for affecting material.Use fluid
Progress phase-change material energy storage, the sensible heat section of the heat transport fluid used, the influence that heat transfer gross efficiency receives heat transfer temperature difference are very big.
Therefore, it is urgent to provide a kind of phase-change accumulation energy heat-exchange system and the methods for carrying out heating water using the system, to solve
The impaired serious and low heat transfer efficiency technical problem of material lifetime caused by electric heating in the prior art.
Summary of the invention
The purpose of the present invention is to provide a kind of phase-change accumulation energy heat-exchange system and the methods for heating water, to realize that high heat transfer is imitated
The purpose that rate, heat transport fluid can be recycled, economizes on resources.
To achieve the above object, the following technical schemes are provided:
The present invention provides a kind of phase-change accumulation energy heat-exchange systems, including fluid reservoir, heat pump, heat exchange tank, water collector and Fen Shui
Device, the fluid reservoir outlet are connected to the heat pump entrance, and the heat pump outlet is connected to the lower end of the heat exchange tank, the collection
Hydrophone is connected to the top of the heat exchange tank, and the water segregator and the fluid reservoir import connect with the bottom end of the heat exchange tank
It is logical, short transverse is provided with multi-layer phase change material barrier, and the phase-change material baffle and the heat exchange in the heat exchange tank
The inner wall interval of tank is arranged.
Further, the upper end of the heat exchange tank is provided with spray thrower, and the water collector is connected to the spray thrower.
Further, the heat exchange tank is connected to source nitrogen.
Further, dispenser is additionally provided on the pipeline that the heat exchange tank is connect with the water segregator.
Further, the phase-change material baffle is extended along the width direction of the heat exchange tank.
Further, the length of the phase-change material baffle is the 85%-95% of the heat exchange tank width, the phase transformation material
Expect baffle with a thickness of 20-40mm.
Further, multiple recirculation holes are offered on the phase-change material baffle.
A method of heating water being carried out using phase-change accumulation energy heat-exchange system described in any of the above-described technical solution, it is described
The step of method includes:
Heating thermal carrier fluid in fluid reservoir is become steam and is pumped into heat exchange tank by S1, heat pump；
S2, steam are bottom-up to heat phase-change material baffle, until steam cooling becomes condensed fluid, stopping heat
Pump work, condensed fluid flow back into fluid reservoir from the bottom end opening of heat exchange tank；
If wanting heat exchanging tank to carry out logical nitrogen after heat exchange containing the organic matter for being dissolved in water in S3, heat transport fluid and removing
Remaining heat transport fluid or steam；
If without the organic matter for being dissolved in water in S4, heat transport fluid, the mode that can choose step S3 cleans, can also
With without step S3, directly by water collector, into heat exchange tank, water flowing is heated；
Liquid after S5, heating is from heat exchange pot bottom outflow, if not carrying out step S3, the liquid after heating passes through liquid separation
Device separates water and organic liquid, and the hot water after separation is led at user by water segregator.
Further, it in step S2, is kept for 30 minutes when the temperature of condensed fluid maintains 50-55 DEG C, stops heat pump work
Make.
Further, the phase-change material baffle is prepared using sweet dioxane and expanded graphite, and the heat transport fluid is
The mixture of Ethyl formate or Ethyl formate and methanol.
Compared with prior art, phase-change accumulation energy heat-exchange system provided by the invention, wherein fluid reservoir is used to store heat carrier
Heating thermal carrier fluid in fluid reservoir at steam and is pumped into heat exchange pot bottom by body, heat pump, and steam is bottom-up to phase transformation material
Material baffle is heated, and flow back into fluid reservoir after steam is condensed into liquid, then from the bottom end opening of heat exchange tank, water collector is used
In the top that water to be heated is transported to heat exchange tank, hot water to be added flows from up to down to be changed with the phase-change material after heat accumulation
Heat, hot water flow out through water segregator from heat exchange tank bottom end and are transported at user.The configuration of the present invention is simple, good effect of heat exchange, and
Heat transport fluid can recycle, and save resource.
The method provided by the invention for carrying out heating water using phase-change accumulation energy heat-exchange system, utilizes heat pump by the load of low temperature
Hot-fluid evacuator body is simultaneously pumped into heat exchange tank, carries out heat exchange with phase-change material, the energy storage efficiency of phase-change material adds than tradition electricity
The energy storage that the heating of hot device team phase-change material obtains is much higher.If exchanging heat in heat transport fluid containing the organic matter for being dissolved in water
Logical nitrogen excludes remaining steam or condensed fluid clean afterwards, then leads to hot water to be added, is dissolved in water if being free of in heat transport fluid
Organic matter then directly leads to hot water to be added, if the step of not carrying out logical nitrogen, to pass through separator before entering water segregator
Hot water is transported at user again by water segregator after being separated to hot water and organic matter, ensure that water safety.This hair
The method of bright heating water exchanges heat and heats the high-efficient of water, and condensed fluid (heat transport fluid condensed) can follow after heat exchange
Ring utilizes, and has saved resource.
Detailed description of the invention
Fig. 1 is the structural schematic diagram one of the phase-change accumulation energy heat-exchange system in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram two of the phase-change accumulation energy heat-exchange system in the embodiment of the present invention.
Appended drawing reference: 1- heat exchange tank；2- phase-change material baffle；3- fluid reservoir；4- heat pump；5- water collector；6- spray thrower；7-
Water segregator；8- source nitrogen；9- valve；10- dispenser.
Specific embodiment
To keep the technical problems solved, the adopted technical scheme and the technical effect achieved by the invention clearer, below
It will be described in further detail in conjunction with technical solution of the attached drawing to the embodiment of the present invention, it is clear that described embodiment is only
It is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those skilled in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.
As depicted in figs. 1 and 2, present embodiments provide a kind of phase-change accumulation energy heat-exchange system, including fluid reservoir 3, heat pump 4,
The outlet of heat exchange tank 1, water collector 5 and water segregator 7, fluid reservoir 3 is connected to the pump intake of heat pump 4, the pump discharge of heat pump 4 and heat exchange
The lower end of tank 1 is connected to, and water collector 5 is connected to the top of heat exchange tank 1, the import of water segregator 7 and fluid reservoir 3 with heat exchange tank 1
Bottom end connection, heat exchange tank 1 is interior to be provided with multi-layer phase change material barrier 2, and phase-change material baffle 2 and heat exchange tank 1 along short transverse
Inner wall interval setting.Fluid reservoir 3 in the present embodiment is used to store heat transport fluid, and heat pump 4 is by the heat transport fluid in fluid reservoir 3
It is heated into steam and is pumped into 1 bottom of heat exchange tank, steam is bottom-up to heat phase-change material baffle 2, when steam is cold
It coagulates for after liquid, then flow back into fluid reservoir 3 from the bottom end opening of heat exchange tank 1, water collector 5 is changed for water to be heated to be transported to
The top of hot tank 1, hot water to be added flows from up to down to exchange heat with the phase-change material after heat accumulation, and hot water is from 1 bottom end of heat exchange tank
Water segregator 7 is flowed out through to be transported at user.The present embodiment structure is simple, good effect of heat exchange, and heat transport fluid can recycle
It utilizes, has saved resource.
Wherein, 1 bottom center of heat exchange tank is provided with the first opening, and the first outward opening is connected with triplate line, supervisor
Road and the first open communication, a branch pipeline are connected to water segregator 7 by valve 9, and another branch pipeline and fluid reservoir 3 pass through valve
Door 9 is connected to.The second opening, the second opening and 4 outlet of heat pump are offered in 1 bottom side of the wall of heat exchange tank, are opened at the top of heat exchange tank 1
It is open equipped with third, third opening is connected to water collector 5.The setting number of heat pump 4 is not limited to one, if process requirement,
It can be set to the heat pump group that more heat pumps are connected in series, each number of the power of heat pump 4 is set according to quantity of heat storage size.
Further, in order to enable hot water uniform flow to be added is to phase-change material baffle 2, the upper end of heat exchange tank 1 is provided with spray
Device 6 is drenched, water collector 5 is connected to spray thrower 6.Guarantee the purity of heating water in the present embodiment, heat exchange tank 1 and source nitrogen 8 connect
It is logical, as shown in Figure 1, the heat exchange tank 1 after heat exchanging, which is exhausted, to be removed when in heat transport fluid containing the organic matter for being dissolved in water
Miscellaneous operation.If heating in heat transport fluid used in the technique of water without the organic matter for being dissolved in water, nitrogen removal of impurities can be led to,
It can also be not provided with source nitrogen 8, and dispenser 10 is set on the pipeline that heat exchange tank 1 is connect with water segregator 7, as shown in Fig. 2, logical
It crosses dispenser 10 and separates hot water with organic matter.
Optionally, to make the heating effect of hot water to be added best, width direction of the phase-change material baffle 2 along heat exchange tank 1
It is extended, this kind of set-up mode, water flows through the time of phase-change material baffle 2 at most, can sufficiently be heated.Phase-change material gear
The length of plate 2 is the 85%-95% of 1 width of heat exchange tank, and the length of phase-change material baffle 2 can be the 85% of 1 width of heat exchange tank,
90% or 95%, the length of phase-change material baffle 2 is set as the 90% of 1 width of heat exchange tank in the present embodiment, phase-change material gear
Between 1 inner wall of plate 2 and heat exchange tank there are gap can be flowed through for steam and water, certainly specific each layer of phase-change material baffle 2
Length can be according to energy storage capacity designed, designed.Phase-change material baffle 2 with a thickness of 20-40mm, the thickness of phase-change material baffle 2 can
Think 20mm, 30mm or 40mm, the thickness of phase-change material baffle 2 is set as 30mm in the present embodiment, certain specific phase transformation
2 thickness of material barrier can be according to energy storage capacity designed, designed, so that phase-change material baffle 2 sufficiently exchanges heat and can treat with steam
For the purpose of heating water sufficiently heats.In order to enable steam can with sufficiently exchanged heat inside phase-change material baffle 2 and phase transformation
Heat inside material barrier 2 can sufficiently be absorbed by hot water to be added, and multiple recirculation holes are offered on phase-change material baffle 2.
The present embodiment additionally provides a kind of method for carrying out heating water using above-mentioned phase-change accumulation energy heat-exchange system, should
The step of method, specifically includes:
Heating thermal carrier fluid in fluid reservoir 3 is become steam and is pumped into heat exchange tank 1 by S1, heat pump 4；
S2, steam are bottom-up to heat phase-change material baffle 2, until steam cooling becomes condensed fluid, when cold
The temperature of lime set body maintains 50-55 degree and is kept for 30 minutes, stops heat pump 4 and works, bottom end opening of the condensed fluid from heat exchange tank 1
It flow back into fluid reservoir 3；
If wanting heat exchanging tank 1 to carry out logical nitrogen after heat exchange containing the organic matter for being dissolved in water in S3, heat transport fluid and removing
Remaining heat transport fluid or steam；
If without the organic matter for being dissolved in water in S4, heat transport fluid, the mode that can choose step S3 cleans, can also
With without step S3, directly by water collector 5, into heat exchange tank 1, water flowing is heated；
Liquid after S5, heating is flowed out from 1 bottom of heat exchange tank, if not carrying out step S3, the liquid after heating is by dividing
Liquid device 10 separates water and organic liquid, and the hot water after separation is led at user by water segregator 7.
Further, the phase-change material baffle 2 of the present embodiment is prepared using sweet dioxane and expanded graphite, wherein sweet
The energy storage temperature of dioxane is 44 DEG C, enthalpy of phase change 249KJ/kg, can satisfy the demand to heating hot water heating.Heat transport fluid is answered
Low-boiling-point organic compound is selected, in order to be evaporated, and boiling point should be higher than that the temperature that hot water to be added will be heated, the present embodiment
In, heat transport fluid is the mixture of Ethyl formate or Ethyl formate and methanol, is made in the mixture of formic acid ethyl ester and methanol
When for heat transport fluid, the mass fraction 84% of Ethyl formate, the mass fraction 16% of methanol, the boiling point of obtained mixture is 51
DEG C, the heating to heating water can be sufficiently met with the heat being stored in phase-change material baffle 2 after the heat exchange of phase transformation baffle.Because
Containing methanol in heat transport fluid in the present embodiment, methanol soluble is in water, and therefore, the top of heat exchange tank 1 is connected to source nitrogen 8,
As shown in Figure 1, before water flowing, first leading to nitrogen into heat exchange tank 1 in water collector 5 and carrying out excluding remaining methanol and ethyl acetate.
In the step S3-S5 of this method, if containing the organic matter for being dissolved in water in heat transport fluid, the logical nitrogen after having exchanged heat
Remaining steam or condensed fluid are excluded completely, then lead to hot water to be added, if being free of the organic matter for being dissolved in water in heat transport fluid,
Directly lead to hot water to be added, it, will be by dispenser 10 to hot water before entering water segregator 7 if the step of not carrying out logical nitrogen
Hot water is transported at user again by water segregator 7 after being separated with organic matter, ensure that water safety.Of the invention adds
The method of hot water exchanges heat and heats the high-efficient of water, and condensed fluid (heat transport fluid condensed) can recycle benefit after heat exchange
With having saved resource.
The method provided in this embodiment for carrying out heating water using phase-change accumulation energy heat-exchange system, utilizes heat pump 4 by low temperature
Heat transport fluid evaporate and be pumped into heat exchange tank 1, carry out heat exchange with phase-change material, used liquid evaporation in this method
Afterwards, the mode heating phase-change material that condensation is heated carries out energy storage, and this method heat transfer efficiency is higher, because steam condensation
Enthalpy of phase change is big, and the heat that the condensation of 100 degree of normal pressure water vapours is released is 2258.4kJ/kg, is equivalent to the load of specific heat 4kJ/kg/C
Hot fluid cools down 500 degree or so.And in gas condensation exothermic process, temperature keeps very fixed, and being conducive to heating equally is that heating is melted
Temperature-resistant phase-change material during change.The energy storage efficiency of phase-change material heats phase-change material than conventional electric heater and obtains
Energy storage it is much higher, the highest efficiency of the method is 3.5 times of electric heater.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. a kind of phase-change accumulation energy heat-exchange system, which is characterized in that including fluid reservoir (3), heat pump (4), heat exchange tank (1), water collector
(5) it is connected to water segregator (7), fluid reservoir (3) outlet with the heat pump (4) entrance, heat pump (4) outlet is changed with described
The lower end of hot tank (1) is connected to, and the water collector (5) is connected to the top of the heat exchange tank (1), the water segregator (7) and described
Fluid reservoir (3) import is connected to the bottom end of the heat exchange tank (1), and short transverse is provided with multilayer in the heat exchange tank (1)
Phase-change material baffle (2), and the inner wall interval of the phase-change material baffle (2) and the heat exchange tank (1) is arranged.
2. phase-change accumulation energy heat-exchange system according to claim 1, which is characterized in that the upper end of the heat exchange tank (1) is arranged
Have spray thrower (6), the water collector (5) is connected to the spray thrower (6).
3. phase-change accumulation energy heat-exchange system according to claim 1, which is characterized in that the heat exchange tank (1) and source nitrogen (8)
Connection.
4. phase-change accumulation energy heat-exchange system according to claim 1, which is characterized in that the heat exchange tank (1) divides water with described
Dispenser (10) are additionally provided on the pipeline of device (7) connection.
5. phase-change accumulation energy heat-exchange system according to claim 1, which is characterized in that the phase-change material baffle (2) is along institute
The width direction for stating heat exchange tank (1) is extended.
6. phase-change accumulation energy heat-exchange system according to claim 1, which is characterized in that the length of the phase-change material baffle (2)
Degree be the heat exchange tank (1) width 85%-95%, the phase-change material baffle (2) with a thickness of 20-40mm.
7. phase-change accumulation energy heat-exchange system according to claim 1, which is characterized in that opened on the phase-change material baffle (2)
Equipped with multiple recirculation holes.
8. a kind of method for carrying out heating water using the described in any item phase-change accumulation energy heat-exchange systems of such as claim 1-7, special
The step of sign is, the method include:
Heating thermal carrier fluid in fluid reservoir (3) is become steam and is pumped into heat exchange tank (1) by S1, heat pump (4)；
S2, steam are bottom-up to heat phase-change material baffle (2), until steam cooling becomes condensed fluid, stopping heat
(4) work is pumped, the bottom end opening of condensed fluid from heat exchange tank (1) flow back into fluid reservoir (3)；
If wanting heat exchanging tank (1) that removing residual is exhausted after heat exchange containing the organic matter for being dissolved in water in S3, heat transport fluid
Heat transport fluid or steam；
If without the organic matter for being dissolved in water in S4, heat transport fluid, the mode that can choose step S3 cleans, can also not
Step S3 is carried out, is directly heated by water collector (5) to heat exchange tank (1) interior water flowing；
Liquid after S5, heating is flowed out from heat exchange tank (1) bottom, if not carrying out step S3, the liquid after heating passes through liquid separation
Device (10) separates water and organic liquid, and the hot water after separation is led at user by water segregator (7).
9. the method for heating water according to claim 8, which is characterized in that in step S2, when the temperature of condensed fluid is tieed up
It holds and is kept for 30 minutes at 50-55 DEG C, stop heat pump (4) work.
10. the method for heating water according to claim 8, which is characterized in that the phase-change material baffle (2) uses sweet two
Alkane and expanded graphite are prepared, and the heat transport fluid is the mixture of Ethyl formate or Ethyl formate and methanol.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910179713.1A CN109780914B (en) | 2019-03-11 | 2019-03-11 | Phase change energy storage heat exchange system and water heating method |
| PCT/CN2019/130958 WO2020181899A1 (en) | 2019-03-11 | 2019-12-31 | Phase change energy storage heat exchange system and method for heating water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910179713.1A CN109780914B (en) | 2019-03-11 | 2019-03-11 | Phase change energy storage heat exchange system and water heating method |
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| Publication Number | Publication Date |
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| CN109780914A true CN109780914A (en) | 2019-05-21 |
| CN109780914B CN109780914B (en) | 2021-07-06 |
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| WO2020181899A1 (en) * | 2019-03-11 | 2020-09-17 | 深圳市爱能森科技有限公司 | Phase change energy storage heat exchange system and method for heating water |
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| Publication number | Publication date |
|---|---|
| CN109780914B (en) | 2021-07-06 |
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