CN102367373A - Heat-transfer medium specially used for solar energy heat pump - Google Patents
Heat-transfer medium specially used for solar energy heat pump Download PDFInfo
- Publication number
- CN102367373A CN102367373A CN2011101759487A CN201110175948A CN102367373A CN 102367373 A CN102367373 A CN 102367373A CN 2011101759487 A CN2011101759487 A CN 2011101759487A CN 201110175948 A CN201110175948 A CN 201110175948A CN 102367373 A CN102367373 A CN 102367373A
- Authority
- CN
- China
- Prior art keywords
- heat
- transfer medium
- content
- solar energy
- heat pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention relates to a heat-transfer medium specially used for a solar energy heat pump, which comprises the following components: 0.15-0.65wt% of calcium chloride, 0.5-1.75wt% of absolute ethyl alcohol, 0.5-1.2wt% of sodium perborate, 0.3-0.8wt% of sodium nitrate, 0.2-0.75wt% of sodium benzoate, 0.3-0.8wt% of potassium borate, 0.2-1.2wt% of benzotriazole and the balance of distilled water. The heat-transfer medium specially used for the solar energy heat pump provided by the invention is characterized by freezing resistance, rust resistance, foam-proof property, non-toxic, environment-friendly property, stable performance and excellent heat-transfer effect.
Description
Technical field
The present invention relates to a kind of heat transfer medium special for solar heat pump.
Background technology
The most frequently used heat-transfer medium is a water, and the heat transfer temperature scope is 5-90 ℃, at this beyond TR, because water is tending towards freezing or boiling and can not make heat transferring agent and use.The advantage of making heat transferring agent with water is that heat-transfer effect is good, with low cost, and its shortcoming is a corrosion equipment, and very easily fouling; Other heat-transfer medium commonly used also has inorganic salts; Like sodium chloride aqueous solution, calcium chloride water, this type heat-transfer medium is serious to various metals and Corrosion of Stainless Steel; At present gradually by the organic alcohols heat-transfer medium, such as the Sodium peroxoborate aqueous solution, aqueous solution of propylene glycol replacement; Though yet single alcohol solution is lighter to the steel alloy corrosion, to carbon steel and other metal still seriously corroded.A kind of heat exchange system, if heat-transfer medium does not preferably have corrosion, so, because of the action of rust of medium, this heat exchange system leakage phenomenon will occur through the time in about 15 years, its consequence is the work-ing life that has shortened entire equipment greatly.
In addition; Make water as thermal source; Be full of whole cavity space; After must making the intravital water in chamber reach certain temperature, scatterer could compare effective heat supply to indoor, and this kind heat-supplying mode energy consumption is big, increased heat cost; And heat transfer efficiency is low, electrothermal calefactive rate is slow, waste water is many, thermo-efficiency is low, cost is high, work-ing life is short, and the problem that when utilizing thermal oil as heat-conducting liquid, exists is: cost is high, rate of heating is slow, area of dissipation is little, current consumption is high, energy utilization rate is low, cause the significant wastage of resource.
Use heat-conducting medium of the prior art, generally all form, be difficult to take into account the effect of antifreeze, antirust and antiscale by organic medium; And in the prior art because the deicing fluid production formula of different brands difference to some extent, freezing point also has nothing in common with each other, and should not use with.Use the deicing fluid of different brands with, mutual chemical reaction, easy blocking scatterer pipeline influences the use properties of interchanger, even causes scatterer to be scrapped.
For improving the shortcoming of traditional heat-dissipating device, vacuum superconductive radiator has appearred on the market, lumen of radiator is evacuated; Make its inner chamber form negative pressure, suck a small amount of superconducting fluid, under action of negative pressure; When heat medium temperature is low, 40 ℃～50 ℃ superconducting fluid with regard to gasifiable, on move and be full of the lumen of radiator space, through the heat release of scatterer outside surface; Room air is carried out heat exchange, reach the indoor heating purpose.This kind scatterer has heat transfer soon, the characteristics that thermo-efficiency is higher.But the characteristic of existing superconducting fluid is organic, has just determined that the height of the every post of this kind vacuum radiator can not be greater than 500 mm; Like height during greater than 500 mm; Superconducting fluid is just inoperative, and the superconducting fluid after the vaporization can't rise and form loop, not heat release of the raised area; Heat absorption on the contrary, every post thermal load is 70～80 watts under Δ t=64.5 ℃ situation.Little at room area, under the highly high situation, this type of superconducting radiator can't satisfy the heating requirement because of every post thermal load is little, and necessary installation is two-layer, causes waste.And, see just burning of naked light because this type of scatterer inside is organic superconductor liquid, and poisonous, to metallic corrosion, freeze at-20 ℃, be unfavorable for using at extremely frigid zones.
Summary of the invention
The object of the invention is exactly, conduct heat slow, a thermo-efficiency low shortcoming big to present employed heat-transfer medium energy consumption; Developed a kind of heat transfer medium special for solar heat pump; That heat-transfer medium of the present invention has is antifreeze, antirust, anti-foam, nontoxic, environmental friendliness, stable performance, characteristics that heat-transfer effect is good; Scatterer uses heat-transfer medium of the present invention, can significantly improve work-ing life and heat transfer property.
In order to solve the realization above-mentioned purpose, the invention provides following technical scheme:
A kind of heat transfer medium special for solar heat pump, it has following composition: calcium chloride: 0.15-0.65 wt%, absolute ethyl alcohol: 0.5-1.75wt%, Sodium peroxoborate: 0.5-1.2 wt%, SODIUMNITRATE: 0.3-0.8 wt%, Sodium Benzoate: 0.2-0.75 wt%, potassium borate: 0.3-0.8 wt%, benzotriazole: the zero(ppm) water of 0.2-1.2 wt% and surplus.
Preferably, use calcium chloride, potassium borate to substitute SRM 935a commonly used in the prior art, contain the chromium of high price in the SRM 935a, human body or environment are all had very serious potential risk as inorganic antifreezing agent; And the anti-freezing property of calcium chloride and potassium borate is excellent equally, and to human body and environmentally friendly.Wherein, the content of preferred calcium chloride is: 0.2-0.5wt%.Preferably, the content of potassium borate is: 0.3-0.5 wt%.
Sodium peroxoborate has very excellent anti-freezing property equally.Content range at the application's Sodium peroxoborate is 0.5-1.2wt%.When its content is higher than 1.2 wt%, slow to the lifting of medium anti-freezing property in the present invention; And content will cause the anti-freezing property of medium not enough when being lower than 0.5 wt%.
Absolute ethyl alcohol as organic heat passage component, has good heat-conducting.In compsn of the present invention, the content of absolute ethyl alcohol is preferably 0.8-1.6 wt%.
SODIUMNITRATE and benzotriazole are composite as corrosion inhibitor or inhibiter, and it can guarantee that spreader surface forms uniform passivation layer and organic film in the framework of the present definition, stop the further generation of corrosion reaction.Preferably, the content of SODIUMNITRATE is 0.7-1.2wt% in the present invention.Preferably, the content of benzotriazole is: 0.3-1.0 wt%.
The adding of Sodium Benzoate can be managed medium and is in alkaline state, the tendency of further having avoided corrosion to take place.Its suitable content is 0.2-0.75wt% in the present invention.Preferably, its content is 0.2-0.5wt%.
Another aspect of the present invention; A kind of preparation method of heat transfer medium special for solar heat pump is also disclosed; During the medium preparation, earlier benzotriazole is mixed with zero(ppm) water, be heated to 30-85 ℃ at mixed solution then; Add calcium chloride, terepthaloyl moietie, Sodium peroxoborate, SODIUMNITRATE, potassium borate, Sodium Benzoate and absolute ethyl alcohol then successively again, be incubated 10-20 minute and get final product.
Compare with heat transfer medium special for solar heat pump of the prior art, the application's heat transfer medium special for solar heat pump has the following advantages:
1., freezing point is low, resistance to frost is excellent, freezing point-38 is ℃ below the degree, low temperature flowability is good.
2., specific heat is high, heat conductivity is good, vaporization losses is few.
3., the metallic conduit in the scatterer had excellent corrosion protection and scale removal effect.
4., Heat stability is good, can guarantee all have favorable cooling effect under the high and low temperature situation.
5., excellent chemical stability, guarantee long-acting antifreeze, the anti-performance of boiling, can in awide temperature range, use.
Embodiment
To combine embodiment that technical scheme of the present invention is described in detail below; The contriver it is pointed out that following examples are in order further to illustrate summary of the invention, and can not be interpreted as the restriction to the invention technical scheme.
Embodiment 1
According to the shown component of table 1 (zero(ppm) water is surplus), prepare the 1-8 heat-transfer medium according to preparation method disclosed by the invention.
The composition of table 1 heat-transfer medium (unit does, wt%, surplus is a zero(ppm) water)
| Numbering | Calcium chloride | Sodium peroxoborate | SODIUMNITRATE | Potassium borate | Sodium Benzoate | Benzotriazole | Absolute ethyl alcohol |
| 1 | 0.15 | 0.5 | 0.3 | 0.8 | 0.20 | 0.2 | 0.5 |
| 2 | 0.27 | 0.6 | 0.5 | 1.0 | 0.27 | 0.4 | 0.7 |
| 3 | 0.35 | 0.7 | 0.7 | 1.2 | 0.35 | 0.6 | 0.8 |
| 4 | 0.40 | 0.8 | 0.8 | 1.5 | 0.40 | 0.8 | 0.9 |
| 5 | 0.47 | 0.9 | 0.9 | 1.8 | 0.47 | 0.9 | 1.0 |
| 6 | 0.55 | 1.0 | 1.0 | 2.0 | 0.55 | 1.0 | 1.2 |
| 7 | 0.60 | 1.1 | 1.1 | 2.3 | 0.65 | 1.1 | 1.5 |
| 8 | 0.65 | 1.2 | 1.2 | 2.5 | 0.75 | 1.2 | 1.75 |
Test thermal conductivity, the water specific heat capacity of above-mentioned 1-8 heat-transfer medium under differing temps, the result is presented in the table 2 respectively.
Water specific heat capacity number (unit: W/mK) under table 2 differing temps
Use in addition in scatterer aluminum alloy sheet commonly used, the heat-transfer medium that stainless steel substrates is immersed in the application, do not observe tangible corrosion vestige in 800 hours, show that radiator material commonly used has good corrosion resisting property in heat-transfer medium of the present invention.
Claims (6)
1. heat transfer medium special for solar heat pump, it has following composition: calcium chloride: 0.15-0.65 wt%, absolute ethyl alcohol: 0.5-1.75wt%, Sodium peroxoborate: 0.5-1.2 wt%, SODIUMNITRATE: 0.3-0.8 wt%, Sodium Benzoate: 0.2-0.75 wt%, potassium borate: 0.3-0.8 wt%, benzotriazole: the zero(ppm) water of 0.2-1.2 wt% and surplus.
2. the described heat-transfer medium of claim 1 is characterized in that the content of calcium chloride is: 0.2-0.5wt%.
3. the described heat-transfer medium of claim 1 is characterized in that the content of described potassium borate is: 0.3-0.5 wt%.
4. the described heat-transfer medium of claim 1, the content that it is characterized in that described absolute ethyl alcohol is 0.8-1.6 wt%.
5. the described heat-transfer medium of claim 1, the content that it is characterized in that described SODIUMNITRATE is 0.7-1.2wt%.
6. the described heat-transfer medium of claim 1 is characterized in that the content of described benzotriazole is: 0.3-1.0 wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101759487A CN102367373A (en) | 2011-06-28 | 2011-06-28 | Heat-transfer medium specially used for solar energy heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101759487A CN102367373A (en) | 2011-06-28 | 2011-06-28 | Heat-transfer medium specially used for solar energy heat pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102367373A true CN102367373A (en) | 2012-03-07 |
Family
ID=45759966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101759487A Pending CN102367373A (en) | 2011-06-28 | 2011-06-28 | Heat-transfer medium specially used for solar energy heat pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102367373A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104902732A (en) * | 2015-06-17 | 2015-09-09 | 东莞市闻誉实业有限公司 | Heat dissipation apparatus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1546598A (en) * | 2003-12-17 | 2004-11-17 | 吴维一 | Vacuum superconduction liquid preparation method |
| WO2005007772A1 (en) * | 2003-07-16 | 2005-01-27 | Young Nam Kim | Feed water composition for boilers |
| US20080230740A1 (en) * | 2003-11-13 | 2008-09-25 | Vladisav Milovanovic | Nontoxic Watery Solution Against Freezing and Corrosion and the Regenerator For the Utilized Antifreeze |
| CN101805593A (en) * | 2010-01-25 | 2010-08-18 | 李英勇 | Superconducting fluid special for vacuum superconducting heating and preparation method thereof |
| CN101993737A (en) * | 2009-08-27 | 2011-03-30 | 陈巧林 | Method for preparing vacuum superconductive liquid |
-
2011
- 2011-06-28 CN CN2011101759487A patent/CN102367373A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005007772A1 (en) * | 2003-07-16 | 2005-01-27 | Young Nam Kim | Feed water composition for boilers |
| US20080230740A1 (en) * | 2003-11-13 | 2008-09-25 | Vladisav Milovanovic | Nontoxic Watery Solution Against Freezing and Corrosion and the Regenerator For the Utilized Antifreeze |
| CN1546598A (en) * | 2003-12-17 | 2004-11-17 | 吴维一 | Vacuum superconduction liquid preparation method |
| CN101993737A (en) * | 2009-08-27 | 2011-03-30 | 陈巧林 | Method for preparing vacuum superconductive liquid |
| CN101805593A (en) * | 2010-01-25 | 2010-08-18 | 李英勇 | Superconducting fluid special for vacuum superconducting heating and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104902732A (en) * | 2015-06-17 | 2015-09-09 | 东莞市闻誉实业有限公司 | Heat dissipation apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102367379B (en) | Life-cycle water-free cooling solution | |
| CN103242807B (en) | Heat-conducting medium | |
| CN101787263A (en) | Heat transfer medium special for solar heat pump and preparation method thereof | |
| CN102399535A (en) | Heat-conduction fluid | |
| CN103666681B (en) | Nanometer cooling liquid capable of enhancing heat transfer | |
| CN101024762A (en) | Industrial corrosion-preventive scale-resisting heat-conductive medium | |
| CN102367376A (en) | Heat transfer medium for radiator | |
| CN102344777A (en) | Heat-absorption heat-conduction liquid for heat tubes | |
| CN108570343A (en) | A kind of new work engine coolant liquid and preparation method thereof | |
| CN101117570A (en) | Industrial concentration heat transfer medium | |
| CN102367374A (en) | Superconductive liquid for vacuum heat transmitter | |
| KR20150080590A (en) | An energy saving fluid | |
| CN102367378A (en) | Heat exchange medium | |
| CN102367373A (en) | Heat-transfer medium specially used for solar energy heat pump | |
| CN102367375A (en) | Heat-conducting medium for heat exchangers | |
| CN102367377A (en) | Heat transfer fluid for heat exchanger | |
| CN103571440A (en) | High-thermal-conductivity anhydrous engine cooling oil | |
| CN102851002B (en) | Aluminium Anti-corrosion antifreeze liquid | |
| CN103102873B (en) | Engine antifreezing fluid | |
| CN101899286B (en) | A kind of superconducting fluid and use the vacuum radiator of this superconducting fluid | |
| CN108251077A (en) | A kind of water-free cooling | |
| CN103102872B (en) | Engine antifreezing fluid | |
| CN201876014U (en) | Heat exchanger for heat pump using seawater sources | |
| CN104673201A (en) | High-efficiency corrosion-resistant antifreezing fluid | |
| CN200955928Y (en) | Vacuum superconducting energy-saving radiator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120307 |