Buy Propane of 99,95%, % R290 99,95 Freon, % R-290 99,95 freon, C3H8 (propane), China
Propane of 99,95%, % R290 99,95 Freon, % R-290 99,95 freon, C3H8 (propane), China
propan_9995hladon_r290_9995_freon_r_290_9995s3n8_propan_kitaj
propan_9995hladon_r290_9995_freon_r_290_9995s3n8_propan_kitaj

Propane of 99,95%, % R290 99,95 Freon, % R-290 99,95 freon, C3H8 (propane), China

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Ukraine, Odessa
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8 years on Allbiz
Technical characteristics
  • BrandSYNTHES TECHNOLOGIES Ltd.
  • Country of manufactureChina
  • Packagingстальные баллоны
Description

R290 coolant.


Chemical formula C3H8 (propane). Treats GFU (HFC) group. ODP ozone destruction potential = 0, potential of global warming of GWP = 3

It is characterized by low cost and it is nontoxical. When using this coolant there are no problems with the choice of constructional materials of details of the compressor, condenser and evaporator. Propane is well dissolved in mineral oils. Boiling temperature with an atmospheric pressure of-42,1 os. Advantage of propane is also low temperature at the exit from the compressor. However, propane as coolant has two basic shortcomings. First, it the compressor sizes have to be fire-dangerous, secondly, more, than when using in the R22 refrigerator of the set refrigerating capacity.
Physical properties of R290
Parameter
Value

Chemical formula
C3H8

Molar weight, g/mol
44.1

Normal temperature of boiling (p=101 of kPa), os
- 42.09

Temperature of freezing (melting), os
- 187.6

Density at 45os, kg/m3
585.3

Potential of destruction of ozone (ODP)
0

Potential of global warming (GWP)
3

Spontaneous ignition temperature in air (r=101kpa)
466 °C


Forms with air explosive mixes at concentration of vapors: from 2,1 to 9,5%.
Application of R290

In industrial refrigeration units propane is used already for many years. In recent years it is even more often offered to apply propane in refrigeration transport units.

In Germany in 1994 more than 1000 household refrigerators on propane, isobutane or their mixes were made. Similar refrigerators produce in China, Brazil, Argentina, India, Turkey and Chile. By estimates of creators of this equipment, refrigerating coefficient when using hydrocarbons practically same +(-) 1%), as during the work on R12. Only little changes in a compressor design are required. The same mineral oils, the same electrical insulation, the same condensing materials, pipes of the same diameter are applied, service procedure practically does not change. Temperature of forcing becomes lower, than during the work on R22 or R502. Propane can be filled at once in system where before there was an ozonoopasny coolant. As showed researches, in this case about 10% of refrigerating capacity are lost if in system there was R22 earlier, and 15% if R502. A number of experts consider, as this decrease could be avoided, having added polypropylene to propane.

At placement of the trade refrigerating appliances working at propane in public rooms it is necessary to follow safety rules. In case of excess of the specified norms of gas station (more than 2,5 kg of R290) the refrigerating appliances should be installed in the certain, specially equipped room that increases capital expenditure.

Propane is applied also in thermal pumps. In Lillehammer (Norway) the thermal pump works at the 45 kW propane with the semi-tight compressor and lamellar heat exchangers. In system of the thermal pump the mass of propane is slightly more than 1 kg, the equipment is in the certain building. According to experts, control of fire danger is possible.

Also propane is used as fuel, the main component of the so-called liquefied hydrocarbonic gases, in production of monomers for polypropylene synthesis. Is initial raw materials for production of solvents. In the food industry propane is registered as a food additive of E944 as propellant.
Ecological characteristics and fire danger of R290

ODP=0; GWP=3.

R290 is nontoxical, but is fire-dangerous. Forms with air explosive mixes at concentration of vapors from 2,1 to 9,5%.

Lower limit of an inflammability (LEL) of 2.1% About 39 g / m ³

Top limit of an inflammability (UEL) of 9.5% Near 117g/m ³

The minimum temperature of ignition is 470 °C

Dependence of critical parameters

the binary mixes used

in R290 working at R32 +, R32 +R600a, R290 +

+ R600a systems, from structure

Dependence of critical parameters (temperature, density and molar volume) for three types of binary mixes of systems is discussed: diftormetan (R32) + propane (R290), diftormetan (R32) + isobutane (R600a) and propane (R290) + isobutane (R600a) from structure. Critical parameters of these mixes defined on the basis of experimental results on a coexistence curve steam-liquid at the accounting of level of disappearance of a meniscus, and also intensity of critical opalescence. In particular, for the system working at R32 + as R600a not only a curve of coexistence steam-liquid, but also and critical parameters are again measured. On the basis of experimental data correlation of dependence of structure of a critical locus is received. Correlation includes separate adjustable parameters for each system. In the real research dependences between these adjustable parameters are also discussed.

Higashi Y.//Proc. Vicenza Conf., IIR, FR/IT, 2005.08.31–09.02; 2005–3; 015-TP-058; 7 p.

BMIH, 2006, No. 2, page 27.


Compressors on hydrocarbon for

small trade installations

R290 coolant is the best option of the choice for replacement of R404A and R407C if to take into account "green properties" (environmental friendliness). Strengths of propane are thermodynamic properties, wide availability, low cost, compatibility with mineral and alkilbenzolovy oils and with all materials used in compressor and refrigerating systems. However the inflammability of this coolant can serve as an obstacle for its wider use. Theoretical indicators of R404A in the LBP mode (low temperature of boiling) and R407C in the HBP mode (high temperature of boiling) are analysed to compare such characteristics of compressors as efficiency, refrigerating capacity, temperature of forcing and difference of pressure. The received characteristics compared for confirmation of the theoretical analysis. Results of operation (an electric power expense, decrease in temperature and stabilization) are in conclusion presented.

P.Valero, M.Zgliczynski//Proc. Compressors 2004, Casta Papiernicka Meet., IIR. SK/FR, 2004.09.29–10.01; 2004–3; 8 p.

BMIH, 2006, No. 2, page 28.

Characteristics of mixes of coolant –

alternatives of R502 – for

low-temperature application

Investigated two pure hydrocarbonic coolants – R127 (is sawn through) both R290 (propane) and three binary mixes consisting of R127, R290, R152a at the test refrigerating bench with the spiral compressor with the purpose to find replacement for R502 used in most cases in low-temperature stationary and transport

installations. Stand 3 productivity... 3,5 kW, and as secondary heat-transmitting liquids used water and mix of water/glycol. All researches were conducted at the same parameters of external air, average temperatures of saturation in the evaporator and the condenser – respectively-28 and +45 ° C were as a result reached. Researches showed that when using R127 and R290 productivity for 9,6–18,7% and refrigerating coefficient is 17,1-27,3% higher, than on R502. Forcing temperature in the compressor working at R127 was to the similar temperature of forcing during the work on R502, and temperatures of forcing of all other coolants on 23,7... 27,9 ° C are lower, than at R502. For all alternative coolants charging in comparison with R502 decreased to 60%.

D.Jung, Y.Ham//Proc. Vicenza Conf., IIR, FR/IT, 2005.08.30–31; 2005–3; 028-CR 022; 9 p.

BMIH, 2006, No. 2, page 28.

Comparison of R290 hydrocarbon and two

The HFC mixes R404A and R410A used

for obtaining low temperature

Better to understand potential opportunities of R290 in comparison with R404A and R410A for cooling of the trade equipment, the experimental program of an assessment within the ARI Program (The American refrigerating institute) GREEN was developed. The refrigeration unit with a refrigerating capacity of 4 kW consisting of a cooler and the compressor and condenser unit which originally worked at R404A served as experimental. It was for safety reasons decided to minimize its charging R290 coolant by a receiver exception. The condenser was also modified: it included the scheme of a recooler of liquid. Due to the optimization of the condenser which is the most important element of the low-temperature cooling system used the condenser with two schemes for the research R410A and the condenser with three schemes for R404A and R290. At an assumption of the same efficiency of the compressor increase of refrigerating coefficient of R410A and R290 coolants in comparison with R404A makes 10% both for R410A, and for R290 in the conditions of full loading and 4 and 5% for R410A and R290 respectively in the conditions of partial loading. This result shows that honor increase of characteristics of R290 in comparison with R404A same, as well as with R410A at full and partial loading if the compressor working at R410A is optimized to the level of the compressor working at R404A.

Y.Hwang, D.H.Jin, R.Radermacher//Proc. Vicenza Conf., IIR, FR/IT, 2005.08.30–31; 2005–3; 029–CR 034; 6 p.

BMIH, 2006, No. 2, page 28.

Short fundamental equations

states for new coolants

For many widely used coolants there are very exact equations of a state now with a large number of parameters which are internationally coordinated as standards of heatphysical properties of the corresponding liquids. In the field of the halogenated hydrocarbons the working group of "Annex 18" of the International agency concerning energy (IEA) established standards on the purest coolants. Besides, she was an inspirer of coordinate work on some other halogenated coolants and mixes used in refrigerating equipment and air conditioning. For natural coolants – carbon dioxide, ammonia and isobutane – for the last 15 years in Germany the control equations of a state were worked out. The national institute of standards and technology of the USA (NIST) almost finished work on the new control equation for propane.

R.Gavriliuc//Proc. Vicenza Conf., IIR, FR/IT. 2005.08.31–09.02; 2005–3; 016-TP-105; 9 p.

BMIH, 2006, No. 2, page 29.


R290 coolant. Chemical formula C3H8 (propane). Treats GFU (HFC) group. ODP ozone destruction potential = 0, potential of global warming of GWP = 3. It is characterized by low cost and it is nontoxical. When using this coolant there are no problems with the choice of constructional materials of details of the compressor, condenser and evaporator. Propane is well dissolved in mineral oils. Boiling temperature with an atmospheric pressure of-42,1 os. Advantage of propane is also low temperature at the exit from the compressor. However propane as coolant has two basic shortcomings. First, it the compressor sizes have to be fire-dangerous, secondly, more, than when using in the R22 refrigerator of the set refrigerating capacity.

In industrial refrigeration units propane is used already for many years. In recent years it is even more often offered to apply propane in refrigeration transport units.

In Germany in 1994 more than 1000 household refrigerators on propane, isobutane or their mixes were made. Similar refrigerators produce in China, Brazil, Argentina, India, Turkey and Chile. By estimates of creators of this equipment, refrigerating coefficient when using hydrocarbons practically same +(-) 1%), as during the work on R12. Only little changes in a compressor design are required. The same mineral oils, the same electrical insulation, the same condensing materials, pipes of the same diameter are applied, service procedure practically does not change. Temperature of forcing becomes lower, than during the work on R22 or R502. Propane can be filled at once in system where before there was an ozonoopasny coolant. As showed researches, in this case about 10% of refrigerating capacity are lost if in system there was R22 earlier, and 15% if R502. A number of experts consider, as this decrease could be avoided, having added polypropylene to propane.

In the USA it is forbidden to use hydrocarbons in household refrigerators. The environmental protection agency of the USA predicts in case of their application up to 30 000 fires a year.

In New Zealand it is authorized to use hydrocarbons in trade refrigerating appliances.

At placement of the trade refrigerating appliances working at propane in public rooms it is necessary to follow safety rules. In case of excess of the specified norms of gas station (more than 2,5 kg of R290) the refrigerating appliances should be installed in the certain, specially equipped room that increases capital expenditure.
Propane is applied also in thermal pumps. In Lillehammer (Norway) the thermal pump works at the 45 kW propane with the semi-tight compressor and lamellar heat exchangers. In system of the thermal pump the mass of propane is slightly more than 1 kg, the equipment is in the certain building. According to experts, control of fire danger is possible.

Propane Propane, dimethylmethane, C3H8 = CH3. CH2. CH3 - hydrocarbon of a predelnogoryad CnH2n+2, is in the nature in crude oil, gazoobrazen, sgushchayetsyav liquid is lower - 17 °, burns with the shining flame. At a chlorine neposredstvennomdeystviye in P.'s particle 6 atoms of hydrogen are replaced only. The item is dissolved in alcohol (1 volume dissolves it 6 volumes of this gas). P. by restoration of acetone, glycerin, a propionitrile, iodide allil, etc. yodistovodorodny acid is formed at 250 - 280 ° (to priety temperature there steps disintegration of iodide hydrogen on N and J, prichemvodorod replaces atom of J in formed at first yodangidride:c3h7.j+hj=c3h8+j2); when heating 9,6 it is frequent. spent on drink iodide with 2,5chast. AICI3 between 130 - 140 °; it turns out best of all from a yodistogoizopropil action of copper-zinc couple, AICI3 or zinc and slaboysolyany acid; at effect of zinc dust in the presence of water the spirtareaktion goes almost without heating (zinc and water yodangidridyobrashchatsya in saturated hydrocarbons only when heating in a zapayannoytrubka to 150 °: 2C3H7J+2Zn+2H2O = 2czh8+znj2+zn (OH)2. It Sinteticheskipoluchatsya at effect of sodium on mix of iodide marked and etala:sn3.sn2. J+CH3J+2Na=CH3. CH2. CH Z +2NaJ - and at action of a tsinkmetil nayodisty ethyl: 2CH3. Æì2J+Zn(CH3) 2=2SNZ. CH2. CH3+ZnJ2. A. A. Grigorovich.

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Propane of 99,95%, % R290 99,95 Freon, % R-290 99,95 freon, C3H8 (propane), China
Propane of 99,95%, % R290 99,95 Freon, % R-290 99,95 freon, C3H8 (propane), China
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