CN109990481A - Optimal design method of water heater - Google Patents
Optimal design method of water heater Download PDFInfo
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- CN109990481A CN109990481A CN201810005002.8A CN201810005002A CN109990481A CN 109990481 A CN109990481 A CN 109990481A CN 201810005002 A CN201810005002 A CN 201810005002A CN 109990481 A CN109990481 A CN 109990481A
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- Prior art keywords
- water heater
- water
- scheme
- liner
- design method
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 196
- 238000013461 design Methods 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000005457 optimization Methods 0.000 claims abstract description 7
- 238000012360 testing method Methods 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000013517 stratification Methods 0.000 claims description 6
- 210000000232 gallbladder Anatomy 0.000 claims description 2
- 230000008676 import Effects 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 3
- 238000004088 simulation Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses an optimal design method of a water heater, and relates to the technical field of water heaters. The optimization design method of the water heater is based on different design schemes of the water heater, models and simulates a working process, and calculates hot water output rates corresponding to the different design schemes so as to obtain the optimization design scheme. According to the optimization design method of the water heater, the working process of the water heater is simulated through modeling software, the hot water output rates of different design schemes can be calculated, a physical model does not need to be manufactured, the design period can be shortened, and the design cost is reduced.
Description
Technical field
The present invention relates to technical field of water heaters more particularly to a kind of optimum design methods of water heater.
Background technique
Water heater refers to makes cold water temperature increase a kind of dress for becoming hot water within a certain period of time by various physical principles
It sets.According to principle of heating difference, water heater can be divided into electric heater, gas heater, solar water heater, magnetic energy water heater,
Air energy water heater, water heater in central heating etc..Electric heater is a kind of relatively common water heater.
Hot water delivery rate is the energy-efficient important indicator of electric heater.Hot water delivery rate refers to that practical hot water is defeated under rated condition
The ratio of output and rated capacity.Hot water delivery rate is bigger, and the hot water output for representing water heater is more.Improve the heat of water heater
Water output rating is the developing direction of electric heater.
In the prior art, general by production mock-up when designing water heater, hot water output is carried out to mock-up
Rate test, the structure of water heater is improved according to test result, and makes new mock-up, according to repeatedly experiment, improve
To ultimate method.In existing design process, designer generally improves the structure of water heater, entire design week by experience
Phase is long, repeatedly makes mock-up, and design cost is high, and cannot accurately learn the factor for influencing hot water delivery rate, Wu Faming
True improvement direction.
Summary of the invention
It is an object of the invention to propose a kind of optimum design method of water heater, which can shorten design week
Phase reduces design cost.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of optimum design method of water heater based on different water heaters design schematic modelings and simulates the course of work,
The corresponding hot water delivery rate of different designs scheme is calculated, to optimize the design scheme of water heater.
Wherein, liner water outlet water temperature changes with time relationship when obtaining water heater output hot water, to calculate difference
The corresponding hot water delivery rate of design scheme.
Wherein, the optimum design method of the water heater further include:
The temperature field for obtaining water in liner in different designs scheme, compares in different designs scheme, water heater is heated to volume
When determining maximum temperature, the uniformity of water temperature in liner obtains influence of the factor different in design scheme to hot water delivery rate, with
Optimize the design scheme of water heater；And/or
It compares in different designs scheme, when water heater exports hot water, the state of the cold and hot water stratification in liner water inlet is obtained
Influence of the different factors to hot water delivery rate in design scheme, to optimize the design scheme of water heater.
Wherein, the optimum design method of the water heater further include:
The velocity field for obtaining water flow in liner in different designs scheme, it is defeated to hot water to obtain factor different in design scheme
The influence of extracting rate.
Wherein, the factor includes the structure of the structure of heating component, the structure of water inlet component and liner.
Wherein, the course of work is modeled and simulated for the water heater of different designs scheme, is specifically included:
Establish 3D model；
Conditions setting；
It imports software and simulates the course of work.
Wherein, when establishing 3D model, multiple test points are chosen in the liner of water heater.
Wherein, the quantity of the test point is 5.
Wherein, the test point is arranged according to standard GB 21519-2008.
The utility model has the advantages that the present invention provides a kind of optimum design methods of water heater, water heater is simulated by modeling software
The course of work, the hot water delivery rate of different designs scheme can be calculated, do not need production mock-up, can shorten design week
Phase reduces design cost.
Detailed description of the invention
Fig. 1 is the flow chart of the optimum design method for the water heater that the embodiment of the present invention 1 provides；
Fig. 2 is the flow chart of the optimum design method for the water heater that the embodiment of the present invention 2 provides.
Specific embodiment
To keep the technical problems solved, the adopted technical scheme and the technical effect achieved by the invention clearer, below
In conjunction with attached drawing and pass through specific embodiment to further illustrate the technical scheme of the present invention.
Embodiment 1
As shown in Figure 1, a kind of optimum design method of water heater is present embodiments provided, according to the design scheme of water heater
It models, and simulates the course of work of water heater on software, the hot water delivery rate of water heater is calculated, to compare different designs
The size of the hot water delivery rate of scheme obtains the optimizing design scheme of water heater structure, to improve the energy saving of water heater.
Compared to the prior art, after making mock-up, by the hot water delivery rate of experiment test water heater, to improve
The design scheme of water heater, the optimum design method in the present embodiment, is simulated by software, and it is in kind not need production, Neng Gou great
The earth shortens the design cycle of water heater, reduces the design cost of water heater.
Specifically, in the course of work of simulation water heater, it can be when simulating water heater output hot water, observation liner goes out
Temperature changes with time situation at the mouth of a river, obtains the simulation curve that liner water outlet water flow temperature changes over time, passes through
The simulation curve of different designs scheme is compared, the size of the hot water delivery rate for learning different designs scheme that can be simple and clear is closed
System, so that it is determined that preferably design scheme.
Specifically, needing to establish the 3D mould of the program before the course of work of the water heater of simulation different designs scheme
Type, and according to the real work situation conditions setting of water heater, the 3D model of foundation is imported in software carry out mould later
It is quasi-.In the present embodiment, the course of work of water heater is simulated mainly according to computational fluid dynamics principle, to meet water heater
Actual working state, to improve the effect of optimization design.
In order to simulate the temperature field of water flow and velocity field in water heater liner, need to choose multiple tests in liner
Point, to carry out simulation calculating.According to National Standard of the People's Republic of China GB 21519-2008, i.e. storage-type electric water heater
The regulation of energy efficiency market and efficiency grade, test point can be chosen for 5, and test point is according to the selecting test point in standard
Principle is chosen, so as to specification simulation process.
The number and distributing position of test point can also increase or choose according to the actual situation, in the present embodiment, in standard
On the basis of 5 test points as defined in GB 21519-2008, two test points are increased, increased two test points are located at heat
Around the secondary heating component of hydrophone, to preferably simulate the temperature field in liner.
Embodiment 2
Water heater generally comprises liner, and liner is provided with inlet and outlet, heating component, liner are provided in liner
Water inlet be provided with water inlet component, cold water is entered in liner by water inlet component, after being heated by heating component, by water outlet
Outflow.Liner persistently supplements cold water during exporting hot water, through water inlet component, and hot water delivery rate refers to that water heater exports
When hot water, when the temperature of the water outlet of liner is down to specified minimum temperature, water heater output hot water amount and liner it is specified
The ratio of capacity.It follows that the uniformity of water temperature, especially water heater are heated to volume in liner in water heater heating process
When determining maximum temperature, the uniformity of water temperature is a key factor of influence hot water delivery rate in liner, and the heating of water heater
Component is the key factor for determining the uniformity of water temperature in liner again.
Influence for heating component different in contrast design scheme to the uniformity of coolant-temperature gage in liner, as shown in Fig. 2,
On the basis of embodiment 1, it in the optimum design method in the present embodiment, is simulated in water heater different designs scheme by software
The temperature field of water in liner carries out simulation monitoring in real time to water temperature variation in liner, and compare hot in different designs scheme
Water in hydrophone is heated to the uniformity of water temperature in specified maximum temperature liner, i.e., heat distribution in liner when comparison heating is completed
State, specifically, when can be completed by simulation heating liner section temperature cloud atlas, can intuitively compare different designs side
In case in liner water temperature uniformity, so that influence of the different heating components to hot water delivery rate is judged, to preferably change
Into the structure of heating component.
During water heater exports hot water, liner continues to input cold water, cold water pair into liner by water inlet component
The impact of hot water in liner will affect the temperature of the hot water of mobility status and the liner output of water flow in liner, i.e., in influence
The stratification state of the velocity field of water flow and liner water inlet hot and cold water in gallbladder, to influence the hot water delivery rate of water heater.
The structure of water inlet component be influence liner water inlet hot and cold water stratification state, i.e., water inlet section in temperature gradient it is crucial because
One of element.The distance between water inlet and water outlet of liner and relative position are the velocity fields for influencing water flow in liner
One of key factor.
Influence for water inlet component different in contrast design scheme to the stratification state of liner water inlet hot and cold water,
In optimum design method in the present embodiment, when simulation water heater output hot water, in different designs scheme in liner water temperature
, during monitoring hot water output, the stratification state of hot and cold water inside liner, in available different designs scheme, water inlet group
To the impact degree of hot water in liner when part is intake, thus judge influence of the different water inlet components to hot water delivery rate, thus
Preferably improve the structure of water inlet component.
Likewise, can also monitor the velocity field of water flow in liner in the course of work of simulation water heater, pass through comparison
The variation of velocity field in different designs scheme can learn factor different in the scheme of comparison to the shadow of the velocity field of liner
It rings, to improve the structure of water heater, preferably to obtain higher hot water delivery rate.
In other examples, the factor for influencing hot water delivery rate may be other influence factors, including but not
It is limited to the structure of heating component, water inlet component and liner.
The above is only a preferred embodiment of the present invention, for those of ordinary skill in the art, according to the present invention
Thought, there will be changes in the specific implementation manner and application range, and the content of the present specification should not be construed as to the present invention
Limitation.
Claims (9)
1. a kind of optimum design method of water heater, which is characterized in that based on different water heaters design schematic modelings and simulate
The course of work calculates the corresponding hot water delivery rate of different designs scheme, to optimize the design scheme of water heater.
2. the optimum design method of water heater as described in claim 1, which is characterized in that obtain interior when water heater output hot water
Gallbladder water outlet water temperature changes with time relationship, to calculate the corresponding hot water delivery rate of different designs scheme.
3. the optimum design method of water heater as described in claim 1, which is characterized in that the optimization design side of the water heater
Method further include:
The temperature field for obtaining water in liner in different designs scheme, compares in different designs scheme, water heater be heated to it is specified most
When high-temperature, the uniformity of water temperature in liner obtains influence of the factor different in design scheme to hot water delivery rate, with optimization
The design scheme of water heater；And/or
It compares in different designs scheme, when water heater exports hot water, the state of the cold and hot water stratification in liner water inlet is designed
Influence of the different factors to hot water delivery rate in scheme, to optimize the design scheme of water heater.
4. the optimum design method of water heater as claimed in claim 3, which is characterized in that the optimization design side of the water heater
Method further include:
The velocity field for obtaining water flow in liner in different designs scheme, obtains factor different in design scheme to hot water delivery rate
Influence.
5. the optimum design method of water heater as claimed in claim 4, which is characterized in that the factor includes heating component
The structure of structure, the structure of water inlet component and liner.
6. the optimum design method of water heater according to any one of claims 1 to 5, which is characterized in that be directed to different designs
The water heater of scheme models and simulates the course of work, specifically includes:
Establish 3D model；
Conditions setting；
It imports software and simulates the course of work.
7. the optimum design method of water heater as claimed in claim 6, which is characterized in that when establishing 3D model, in water heater
Liner in choose multiple test points.
8. the optimum design method of water heater as claimed in claim 7, which is characterized in that the quantity of the test point is 5.
9. the optimum design method of water heater as claimed in claim 7, which is characterized in that the test point is according to standard GB
21519-2008 arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810005002.8A CN109990481A (en) | 2018-01-03 | 2018-01-03 | Optimal design method of water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810005002.8A CN109990481A (en) | 2018-01-03 | 2018-01-03 | Optimal design method of water heater |
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| Publication Number | Publication Date |
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| CN109990481A true CN109990481A (en) | 2019-07-09 |
Family
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| CN201810005002.8A Pending CN109990481A (en) | 2018-01-03 | 2018-01-03 | Optimal design method of water heater |
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| CN (1) | CN109990481A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112861306A (en) * | 2020-12-23 | 2021-05-28 | 重庆大学 | Hot water type air source heat pump water tank matching and use mode optimization design method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102096735A (en) * | 2011-01-28 | 2011-06-15 | 广东万家乐燃气具有限公司 | Domestic hot water planning design system method |
| CN103307740A (en) * | 2013-07-09 | 2013-09-18 | 广东威博电器有限公司 | Electric water heater with high hot water output rate |
-
2018
- 2018-01-03 CN CN201810005002.8A patent/CN109990481A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102096735A (en) * | 2011-01-28 | 2011-06-15 | 广东万家乐燃气具有限公司 | Domestic hot water planning design system method |
| CN103307740A (en) * | 2013-07-09 | 2013-09-18 | 广东威博电器有限公司 | Electric water heater with high hot water output rate |
Non-Patent Citations (6)
| Title |
|---|
| 周庆芳，杨庆泉: "数值模拟技术在燃气热水器设计上的应用", 《中国城市燃气学会应用专业委员会2004年会论文集》 * |
| 唐建光，马鸿飞，肖骏: "数值模拟技术在电热水器节能设计优化中的应用", 《2020年中国家用电器技术大会论文集》 * |
| 孙京岩、李彩霞等: "储水式电热水器热水器输出率的提高分析及应用", 《家电科技》 * |
| 尹翔等: "进水挡板对热水输出率影响的CFD模拟及实验验证", 《家电科技》 * |
| 朱冬伟等: "电热水器热水产率的CFD计算及优化研究", 《电器》 * |
| 潘向军: "储水式电热水器高热水输出率研究", 《家电科技》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112861306A (en) * | 2020-12-23 | 2021-05-28 | 重庆大学 | Hot water type air source heat pump water tank matching and use mode optimization design method |
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Application publication date: 20190709 |
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