US2006411A - Process for heat transmission - Google Patents
Process for heat transmission Download PDFInfo
- Publication number
- US2006411A US2006411A US683014A US68301433A US2006411A US 2006411 A US2006411 A US 2006411A US 683014 A US683014 A US 683014A US 68301433 A US68301433 A US 68301433A US 2006411 A US2006411 A US 2006411A
- Authority
- US
- United States
- Prior art keywords
- heat
- acid
- transmitting material
- fluids
- employing
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title description 18
- 230000005540 biological transmission Effects 0.000 title description 2
- 239000000463 material Substances 0.000 description 29
- 239000012530 fluid Substances 0.000 description 16
- 239000002253 acid Substances 0.000 description 12
- 125000005907 alkyl ester group Chemical group 0.000 description 8
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 8
- 150000002148 esters Chemical class 0.000 description 7
- 125000003118 aryl group Chemical group 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 150000007513 acids Chemical class 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- SMNDYUVBFMFKNZ-UHFFFAOYSA-N 2-furoic acid Chemical compound OC(=O)C1=CC=CO1 SMNDYUVBFMFKNZ-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- QMKYBPDZANOJGF-UHFFFAOYSA-N benzene-1,3,5-tricarboxylic acid Chemical compound OC(=O)C1=CC(C(O)=O)=CC(C(O)=O)=C1 QMKYBPDZANOJGF-UHFFFAOYSA-N 0.000 description 2
- 239000004305 biphenyl Substances 0.000 description 2
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical group CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 2
- IPKKHRVROFYTEK-UHFFFAOYSA-N dipentyl phthalate Chemical group CCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCC IPKKHRVROFYTEK-UHFFFAOYSA-N 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- -1 isopropyl secondary butyl phthalate Chemical group 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- WLJVNTCWHIRURA-UHFFFAOYSA-N pimelic acid Chemical compound OC(=O)CCCCCC(O)=O WLJVNTCWHIRURA-UHFFFAOYSA-N 0.000 description 2
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 1
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 description 1
- CWTNJOUCIAUOGI-UHFFFAOYSA-N 1-o-ethyl 2-o-pentyl benzene-1,2-dicarboxylate Chemical group CCCCCOC(=O)C1=CC=CC=C1C(=O)OCC CWTNJOUCIAUOGI-UHFFFAOYSA-N 0.000 description 1
- PKHPNDWTECXJSX-UHFFFAOYSA-N 1-o-methyl 2-o-propan-2-yl benzene-1,2-dicarboxylate Chemical group COC(=O)C1=CC=CC=C1C(=O)OC(C)C PKHPNDWTECXJSX-UHFFFAOYSA-N 0.000 description 1
- ZFFMLCVRJBZUDZ-UHFFFAOYSA-N 2,3-dimethylbutane Chemical group CC(C)C(C)C ZFFMLCVRJBZUDZ-UHFFFAOYSA-N 0.000 description 1
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 1
- HXHWGIPVNNEZNO-UHFFFAOYSA-N 2-benzylpropanedioic acid propanedioic acid Chemical compound C(C1=CC=CC=C1)C(C(=O)O)C(=O)O.C(CC(=O)O)(=O)O HXHWGIPVNNEZNO-UHFFFAOYSA-N 0.000 description 1
- JEABIFHLYSDNRJ-UHFFFAOYSA-N 2-o-butyl 1-o-ethyl benzene-1,2-dicarboxylate Chemical group CCCCOC(=O)C1=CC=CC=C1C(=O)OCC JEABIFHLYSDNRJ-UHFFFAOYSA-N 0.000 description 1
- XXFSYINDUHLBIL-UHFFFAOYSA-N 2-o-butyl 1-o-methyl benzene-1,2-dicarboxylate Chemical group CCCCOC(=O)C1=CC=CC=C1C(=O)OC XXFSYINDUHLBIL-UHFFFAOYSA-N 0.000 description 1
- LVFFZQQWIZURIO-UHFFFAOYSA-N 2-phenylbutanedioic acid Chemical compound OC(=O)CC(C(O)=O)C1=CC=CC=C1 LVFFZQQWIZURIO-UHFFFAOYSA-N 0.000 description 1
- IBFJDBNISOJRCW-UHFFFAOYSA-N 3-methylphthalic acid Chemical compound CC1=CC=CC(C(O)=O)=C1C(O)=O IBFJDBNISOJRCW-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- KCXZNSGUUQJJTR-UHFFFAOYSA-N Di-n-hexyl phthalate Chemical group CCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCC KCXZNSGUUQJJTR-UHFFFAOYSA-N 0.000 description 1
- QWDBCIAVABMJPP-UHFFFAOYSA-N Diisopropyl phthalate Chemical compound CC(C)OC(=O)C1=CC=CC=C1C(=O)OC(C)C QWDBCIAVABMJPP-UHFFFAOYSA-N 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 1
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 125000006267 biphenyl group Chemical group 0.000 description 1
- YXVFYQXJAXKLAK-UHFFFAOYSA-N biphenyl-4-ol Chemical group C1=CC(O)=CC=C1C1=CC=CC=C1 YXVFYQXJAXKLAK-UHFFFAOYSA-N 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- NNBZCPXTIHJBJL-UHFFFAOYSA-N decalin Chemical compound C1CCCC2CCCCC21 NNBZCPXTIHJBJL-UHFFFAOYSA-N 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 229960002380 dibutyl phthalate Drugs 0.000 description 1
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical compound C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 1
- CZZYITDELCSZES-UHFFFAOYSA-N diphenylmethane Chemical compound C=1C=CC=CC=1CC1=CC=CC=C1 CZZYITDELCSZES-UHFFFAOYSA-N 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthrene Natural products C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- ZIYVHBGGAOATLY-UHFFFAOYSA-N methylmalonic acid Chemical compound OC(=O)C(C)C(O)=O ZIYVHBGGAOATLY-UHFFFAOYSA-N 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 1
- MQHNKCZKNAJROC-UHFFFAOYSA-N phthalic acid dipropyl ester Natural products CCCOC(=O)C1=CC=CC=C1C(=O)OCCC MQHNKCZKNAJROC-UHFFFAOYSA-N 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/08—Materials not undergoing a change of physical state when used
Definitions
- the present invention is concerned with heating fluids for high temperature work such as used for indirect heating, power cycles and the like.
- This method is useful in the art of distillation 5 or evaporation of liquids and is particularly apsolidify at relatively low temperatures.
- the present invention provides for the utilizat tion of a class of compounds as heat transmitting material which are generally able to resist high temperatures without decomposing, and which can be used at ordinary or slightly raised pressures, which makes it possible to use simplified apparatus.
- the substances as a class are compounds of relatively low volatility and of comparatively high boiling point as well as inert and stable.
- the agent or agents When the operating temperature is above that at which the heating agent is fairly stable, it may be desirable to stabilize the agent or agents by incorporating with it or them a substance capable of overcoming any decomposition tendency, preferably a substance-of higher boiling temperature which will by mass action or otherwise restrict or obviate any decomposition reaction, especially during prolonged heating.
- the heat transfer medium may be compounded with certainsubstances to modify its tendency to Sub- stances as p-hydroxy diphenyl, pyrene, and naphthane or their mixtures are useful. Besides the modifying agents, the heat transfer medium may have incorporated therewith one or more stabilizing substances as described heretofore.
- My. heat transfer medium which may or may not have one or more" of the above-mentioned auxiliary agents incorporated therewith, may, if desired, be employed in conjunction with one or more of the conventional heat transfer mediums as diphenyl, diphenyl oxide, diphenyl methane, I (ii-diphenyl oxides or ethers, and the like.
- My invention comprises the utilization as heat transfer medium, of secondary alkyl esters of polycarboxylic acids which acids may be of allphatic, aromatic or aralkyl character and may or may not be further substituted. Unsaturated as well as saturated polycarboxylic acids may be used and they may be either di-, .tri-, tetracaris present at least one secondary alkyl radical. I include also the symmetrical neutral esters as well as asymmetrical esters which contain different secondary alkyl radicals on the carboxyl groups. a
- neutral esters as the diisopropyl, secondary dibutyl, secondary diamyl, secondary dihexyl phthalates and their homologues as well as those of a mixed character as secondary butyl methyl phthalate, secondary amyl ethyl phthalate, secondary butyl ethyl phthalate, isopropyl methyl phthalate, isopropyl secondary butyl phthalate.
- the step of employing a secondary dialkyl ester of a phthalic acid as the heat transmitting material In a process for transmitting heat to fluids in indirect contact with heat transmitting material, the step of employing a secondary dialkyl ester of a phthalic acid as the heat transmitting material.
Description
Pa'tented July 2, 1935 fUNlTED STATES 2,006,411 PROCESS FOR HEAT TRANSMISSION Ludwig Rosenstein, San Francisco, Calif., as-
signor to Shell Development Company, San Francisco, Calif., a corporation of Delaware No Drawing. Application July 31, 1933, Serial 15 Claims. (01. 252
The present invention is concerned with heating fluids for high temperature work such as used for indirect heating, power cycles and the like.
This method is useful in the art of distillation 5 or evaporation of liquids and is particularly apsolidify at relatively low temperatures.
plicable when the distillation or evaporation is to be carried out at high temperatures and under subatmospheric pressure. It finds specific usage in the distillation of mineral oils for the manufacture of lubricants. I
The present invention provides for the utiliza tion of a class of compounds as heat transmitting material which are generally able to resist high temperatures without decomposing, and which can be used at ordinary or slightly raised pressures, which makes it possible to use simplified apparatus.
The substances as a class are compounds of relatively low volatility and of comparatively high boiling point as well as inert and stable.
When the operating temperature is above that at which the heating agent is fairly stable, it may be desirable to stabilize the agent or agents by incorporating with it or them a substance capable of overcoming any decomposition tendency, preferably a substance-of higher boiling temperature which will by mass action or otherwise restrict or obviate any decomposition reaction, especially during prolonged heating.
- The heat transfer medium may be compounded with certainsubstances to modify its tendency to Sub- stances as p-hydroxy diphenyl, pyrene, and naphthane or their mixtures are useful. Besides the modifying agents, the heat transfer medium may have incorporated therewith one or more stabilizing substances as described heretofore.
My. heat transfer medium, which may or may not have one or more" of the above-mentioned auxiliary agents incorporated therewith, may, if desired, be employed in conjunction with one or more of the conventional heat transfer mediums as diphenyl, diphenyl oxide, diphenyl methane, I (ii-diphenyl oxides or ethers, and the like.
My invention comprises the utilization as heat transfer medium, of secondary alkyl esters of polycarboxylic acids which acids may be of allphatic, aromatic or aralkyl character and may or may not be further substituted. Unsaturated as well as saturated polycarboxylic acids may be used and they may be either di-, .tri-, tetracaris present at least one secondary alkyl radical. I include also the symmetrical neutral esters as well as asymmetrical esters which contain different secondary alkyl radicals on the carboxyl groups. a
As illustrative of the various compounds which may be utilized due to their high-boiling temperatures, may be mentioned the isopropyl, secondary butyl, secondary amyl, secondary hexyl, and higher secondary alkyl esters of phthalic acid, terephthalic acid, methyl-phthalic acid, isophthalic acid, citric acid, maleic acid, malic acid,
tartaric acid, succinic acid, phenyl-succinic acid, trimesicacid, pimelic acid, glutaric acid, methyl malonic acid, malonic acid benzyl-malonic acid, sebacic acid, pyromucic acid, itaconic acid, aco- 'nitic acid, fumaric acid, and the like, as well as their homologues, analogues and substitution products.
Particularly suitable are the neutral esters as the diisopropyl, secondary dibutyl, secondary diamyl, secondary dihexyl phthalates and their homologues as well as those of a mixed character as secondary butyl methyl phthalate, secondary amyl ethyl phthalate, secondary butyl ethyl phthalate, isopropyl methyl phthalate, isopropyl secondary butyl phthalate.
While I have in the foregoing described in some detail the preferred embodiment of my invention and some variants thereof, it will be understood that this is only for the purpose of making the invention more clear and that the invention is not to be regarded as limited to the details of operation described, nor is .it dependent upon the soundness or accuracy of the theories which I have advanced as to the advantageous results attained. On the other hand, the'invention is to be regarded as limited only by the terms of the claims, in which it is my intention to claim all novelty inherent therein as broadly as is possible in view of the prior art.
I claim as my invention:
1. In a process for transmitting heat to fluids in indirect contact with heat transmitting material, the step of employing a secondary alkyl ester of a polycarboxylic acid of relatively highboiling temperature as the heat transmitting ma terial.
2. In a process for transmitting heat to fluids in indirect contact with heat transmitting material, the step of employing a secondary alkyl ester of an aromatic polycarboxylic acid as the heat transmitting material.
3. In a process for transmitting heat to fluids in indirect contact with heat transmitting maester of an aromatic polycarboxylic acid as the heat transmitting material.
4. In a process for transmitting heat to fluids in indirect contact with heat transmitting material, the step of employing a secondary polybutyl ester of an aromatic polycarboxylic acid as the heat transmitting material.
5. In a process for transmitting heat to fluids in indirect contact with heat transmitting material, the step of employing a secondary polyamyl ester of an aromatic polycarboxylic acid as the heat transmitting material.
6. In a process for transmitting heat to fluids in indirect contact with heat transmitting material, the step of employing a secondary alkyl ester of a dicarboxylic acid of relatively highboiling temperature as the heat transmitting material.
7. In a process for transmitting heat to fluids in indirect contact with heat transmitting material, the step of employing an isopropyl ester of phthalic acid as the heat transmitting material.
8. In a process for transmitting heat to fluids in indirect contact with heat transmitting material, the step of employing a secondary -hutyl ester of aphthalic acid as the heat transmitting material.
9. In a process for transmitting heat to fluids in indirect contact with heat transmittingmaterial, the step of employing a secondary alkyl ester or a phthalic acid as the heat transmitting. material.
' terial, the step of employing a poly-isopropyl 10. In a process for transmitting heat to fluids in indirect contact with heat transmitting material, the step of employing a secondary dialkyl ester of a phthalic acid as the heat transmitting material.
11. In a process for transmitting heat to fluids in indirect contact with heat transmitting material, the step of employing a diisopropyl phthalate as the heat transmitting material.
12. In a process'for transmitting heat to fluids in indirect contact with heat transmitting material, the step of employing a secondary dibutyl phthalate as the heat transmitting material.
13. In a process for transmitting heat to fluids in indirect contact with heat transmitting material, the step of employing a secondary diamyl phthalate as the heat transmitting material.
14. In a process for transmitting heat to fluids in indirect contact with heat transmitting material, the step of employing a secondary alkyl ester of a polycarboxylic acid of relatively highboiling temperature as the heat transmitting material, in conjunction with a stabilizing agent which is efiective at relatively high temperatures to stabilize the heat transmitting material against decomposition.
15. In a process for transmitting heat to fluids in indirect contact with heat transmitting material, the step of employing a secondary alkyl ester of a polycarboxylic acid of relatively highboiling temperature as the heat transmitting material, in conjunction with a modifying compound which reduces its solidifying temperature.
LUDWIG' ROSENSTEIN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US683014A US2006411A (en) | 1933-07-31 | 1933-07-31 | Process for heat transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US683014A US2006411A (en) | 1933-07-31 | 1933-07-31 | Process for heat transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2006411A true US2006411A (en) | 1935-07-02 |
Family
ID=24742208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US683014A Expired - Lifetime US2006411A (en) | 1933-07-31 | 1933-07-31 | Process for heat transmission |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2006411A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2472810A (en) * | 1941-12-24 | 1949-06-14 | Koppers Co Inc | Recovery of light oil from absorbent |
| US2852470A (en) * | 1954-10-15 | 1958-09-16 | Gen Motors Corp | Refrigeration composition |
-
1933
- 1933-07-31 US US683014A patent/US2006411A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2472810A (en) * | 1941-12-24 | 1949-06-14 | Koppers Co Inc | Recovery of light oil from absorbent |
| US2852470A (en) * | 1954-10-15 | 1958-09-16 | Gen Motors Corp | Refrigeration composition |
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