ES2396282B1 - EMPLOYMENT OF JOJOBA OIL AS CALO-CARRIER FLUID (HTF). - Google Patents
EMPLOYMENT OF JOJOBA OIL AS CALO-CARRIER FLUID (HTF). Download PDFInfo
- Publication number
- ES2396282B1 ES2396282B1 ES201000828A ES201000828A ES2396282B1 ES 2396282 B1 ES2396282 B1 ES 2396282B1 ES 201000828 A ES201000828 A ES 201000828A ES 201000828 A ES201000828 A ES 201000828A ES 2396282 B1 ES2396282 B1 ES 2396282B1
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- Spain
- Prior art keywords
- heat
- jojoba oil
- absorber tube
- htf
- carrier fluid
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- 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 - Fee Related
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M101/00—Lubricating compositions characterised by the base-material being a mineral or fatty oil
- C10M101/04—Fatty oil fractions
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Cosmetics (AREA)
Abstract
Empleo del aceite de jojoba como fluido calo-portador (HTF).#En instalaciones de captación de energía solar provistas de un captador cilindro-parabólico que concentra la radiación solar sobre un tubo absorbedor, dicho tubo absorbedor forma parte de un circuito de intercambio térmico y por el mismo circula un fluido calo-portador que transporta el calor desde dicho tubo absorbedor al intercambiador. Los fluidos calo-portadores utilizados hasta la fecha, o bien limitan la temperatura máxima que se puede alcanzar en el tubo absorbedor, o bien se deterioran con relativa prontitud. La invención consiste en el empleo como fluido calo-portador de aceite de jojoba, capaz de soportar temperaturas de trabajo del orden de 390°C e incluso superiores, manteniendo íntegras sus prestaciones de forma prácticamente indefinida.Use of jojoba oil as a heat-carrying fluid (HTF). # In solar energy collection facilities equipped with a parabolic trough collector that concentrates solar radiation on an absorber tube, said absorber tube is part of a thermal exchange circuit and through it circulates a heat-carrying fluid that transports heat from said absorber tube to the exchanger. Heat-carrier fluids used to date, either limit the maximum temperature that can be reached in the absorber tube, or deteriorate relatively quickly. The invention consists in the use as a heat-carrying fluid of jojoba oil, capable of withstanding working temperatures of the order of 390 ° C and even higher, keeping its performance intact practically indefinitely.
Description
OBJETO DE LA INVENCIÓN OBJECT OF THE INVENTION
La presente invención se refiere a un nuevo empleo o utilización del aceite de jojoba, concretamente como fluido calo-portador en instalaciones de captación de energía solar, para transferencia térmica entre el colector solar y el complementario intercambiador térmico. The present invention relates to a new use or use of jojoba oil, specifically as heat carrier fluid in solar energy collection facilities, for thermal transfer between the solar collector and the complementary heat exchanger.
Con el empleo o utilización del aceite de jojoba se desea conseguir: Baja presión de vapor, Bajo punto de congelación, Alta temperatura de inflamación, No atacar a elementos flexibles ni juntas elásticas, Resistir a la degradación y oxidación a altas temperaturas, Conseguir un buen comportamiento ante los repetitivos cambios de temperatura y una óptima capacidad calorífica y magnífica estabilidad térmica y una baja volatilidad With the use or use of jojoba oil you want to achieve: Low vapor pressure, Low freezing point, High flash point, Do not attack flexible elements or elastic joints, Resist degradation and oxidation at high temperatures, Get a good behavior in the face of repetitive temperature changes and optimum heat capacity and superb thermal stability and low volatility
ANTECEDENTES DE LA INVENCIÓN BACKGROUND OF THE INVENTION
Como es sabido, los elementos básicos de una instalación para captación de energía solar son un colector, provisto de un tubo absorbedor sobre el que preferentemente confluye la radiación solar mediante una pantalla parabólica, estando este tubo absorbedor comunicado con un As is known, the basic elements of a solar energy collection system are a collector, provided with an absorber tube on which solar radiation preferably converges by means of a parabolic screen, this absorber tube being communicated with a
- 5 5
- intercambiador térmico, el cual transfiere el calor captado por el absorbedor a otro fluido, generalmente agua, u otro fluido que puede ser orgánico, siendo también frecuente la participación en la instalación de un acumulador en forma de tanques de sales o de aceite, que permita mantener almacenado el calor desde el momento en que se produce la captación hasta el momento en que se produce el consumo. heat exchanger, which transfers the heat captured by the absorber to another fluid, usually water, or another fluid that can be organic, and the participation in the installation of an accumulator in the form of salt or oil tanks is also frequent, allowing keep the heat stored from the moment in which the uptake occurs until the moment in which the consumption occurs.
- 1O 1O
- El agua tiene un rango de utilización limitado a los niveles térmicos de congelación y/o evaporación, que la hace inviable para, por ejemplo, colectores de concentración Water has a range of use limited to thermal levels of freezing and / or evaporation, which makes it unfeasible for, for example, concentration collectors
- DESCRIPCIÓN DE LA INVENCIÓN DESCRIPTION OF THE INVENTION
- 15 20 15 20
- La invención se enfrenta con el problema de obtener un líquido calo-portador capaz de cumplir su función como medio de transmisión térmica y de mantenerse químicamente estable a altas temperaturas, del orden de 390°C, concretamente en instalaciones de captación de energía solar a base de colectores cilindro-parabólicos en los que el tubo absorbedor se sitúa en la línea focal del mismo, recibiendo masivamente la radiación solar. The invention faces the problem of obtaining a heat-carrying liquid capable of fulfilling its function as a means of thermal transmission and of remaining chemically stable at high temperatures, of the order of 390 ° C, specifically in solar-based energy collection facilities. of parabolic trough collectors in which the absorber tube is located in its focal line, receiving solar radiation massively.
- La solución proporcionada por esta invención se basa en el empleo de aceite de jojoba, como fluido calo-portador en el tipo de instalaciones citadas. The solution provided by this invention is based on the use of jojoba oil, as a heat carrier fluid in the type of installations mentioned.
Tubo absorbedor Absorber tube
- Sección transversal de un colector CCP Cross section of a CCP collector
- DESCRIPCIÓN DETALLADA DE LA INVENCIÓN DETAILED DESCRIPTION OF THE INVENTION
- 5 5
- Como es sabido, la jojoba (Simmondsia chinensis ), es una planta As is known, jojoba (Simmondsia chinensis), is a plant
- arbustiva, concretamente el único vegetal que produce cera líquida, con las shrubby, specifically the only vegetable that produces liquid wax, with
- propiedades fisicas y químicas propias de un éster. De forma más concreta, de physical and chemical properties of an ester. More specifically, of
- la nuez de la jojoba es extraíble el aceite por prensado, y hasta la fecha este The jojoba nut is removable oil by pressing, and to date this
- 1 O 1 o
- aceite de jojoba tiene una amplísima gama de aplicaciones prácticas, pero Jojoba oil has a very wide range of practical applications, but
- todas ellas relacionadas con el ámbito de la cosmética y la medicina. all of them related to the field of cosmetics and medicine.
- La invención se refiere al empleo del aceite de jojoba como fluido The invention relates to the use of jojoba oil as a fluid
- calo-portador (HTF) en instalaciones de captación de energía solar. heat carrier (HTF) in solar energy collection facilities.
- 15 fifteen
- Esto es factible por cuanto que en su composición participa un This is feasible because in its composition participates a
- 96% de ceramida, que hace que dicho aceite resulte extremadamente estable 96% ceramide, which makes said oil extremely stable
- al to the
- calor y a la oxidación, manteniendo sus propiedades de forma hot Y to the oxidation, keeping their properties from shape
- prácticamente indefinida en el tiempo. practically undefined in time.
- 5 5
- El aceite constituye el fluido térmico de transferencia de calor que es calentado por efecto de la radiación solar, hasta temperaturas del orden de 390°C o superiores. Esta concentración es producida por un colector cilindro-parabólico de espejos sobre receptores de tipo tubo con cámara de ultravacío, en cuyo interior circula el aceite de referencia. The oil constitutes the heat transfer heat fluid that is heated by the effect of solar radiation, to temperatures of the order of 390 ° C or higher. This concentration is produced by a cylinder-parabolic collector of mirrors on tube-type receivers with an ultra-empty chamber, inside which the reference oil circulates.
- 1 O 1 o
- Una vez que el aceite es calentado a la temperatura prevista, es susceptible de ser almacenado en tanques para su posterior uso, o bien ser llevado a un intercambiador para hacer trabajar a una turbina, con ciclo Rankine de cualquier naturaleza, o calentar otros fluidos orgánicos. A la salida de dicho intercambiador, el aceite se encontrará a una temperatura menor que a la entrada, para ser de nuevo calentado en el captador solar. Once the oil is heated to the expected temperature, it is likely to be stored in tanks for later use, or be taken to an exchanger to operate a turbine, with a Rankine cycle of any nature, or to heat other organic fluids. . At the exit of said exchanger, the oil will be at a lower temperature than at the entrance, to be heated again in the solar collector.
- 15 fifteen
- Se ha podido comprobar experimentalmente que a la citada temperatura de 393°C el aceite de jojoba presenta una presión de vapor de 1,25 bares, que es una presión de vapor ligeramente superior a la ambiental (del orden de 1,O 1 bar), lo que le hace especialmente idóneo para la aplicación prevista. It has been found experimentally that at the aforementioned temperature of 393 ° C, jojoba oil has a vapor pressure of 1.25 bar, which is a slightly higher than the environmental vapor pressure (of the order of 1, O 1 bar) , which makes it especially suitable for the intended application.
Otros ensayos y análisis efectuados sobre el aceite de jojoba han Other tests and analyzes carried out on jojoba oil have
- dado los siguientes resultados given the following results
- 5 5
- Propiedades típicas Método Typical Properties Method
- Unidades Mínimo Máximo Units Minimum Maximum
- Índice de yodo AOCS Cd ld-92 Iodine index AOCS Cd ld-92
- g/IOOg 79 86 g / IOOg 79 86
- Punto de fusión TW68 Melting Point TW68
- oc 12 15 oc 12 fifteen
- Índice de refracción ( 40°C) AOCS Ce 7-25 Refractive index (40 ° C) AOCS Ce 7-25
- nO 1458 1460 no 1458 1460
- Indice de saponificación AOCS Cd 3-25 Saponification index AOCS Cd 3-25
- mgKOH/g 88 96 mgKOH / g 88 96
- Gravedad específica (25°C) AOCS Ce 1 Ob-25 Specific Gravity (25 ° C) AOCS Ce 1 Ob-25
- 0.862 0.867 0.862 0.867
- Contenido de triglicéridos TW31 TW31 triglyceride content
- peso% weight%
- Trans isomeros AOCS Cd 14-95 Trans isomers AOCS Cd 14-95
- peso 1 no detectado no detectado weight 1 not detected not detected
- Valores de especificación Specification Values
- Índice de acidez AOCS Ci 4-91 Acidity Index AOCS Ci 4-91
- mg KOH/g 2 mg KOH / g 2
- Color AOCS Td la-64 Color AOCS Td la-64
- Gardner 9 Gardner 9
- AOCS Ce 13e-92 AOCS Ce 13e-92
- Lovibond-5%" n/a n/a Lovibond-5% " n / a n / a
- C:36 W08 C: 36 W08
- área% 2 area% 2
- C:38 C: 38
- 3 8 3 8
- C:40 C: 40
- 23 34 2. 3 3. 4
- C:42 C: 42
- 44 58 44 58
- C:44 C: 44
- 8 14 8 14
- C:46 C: 46
- 3 3
- Índice de peróxidos AOCS Cd 8-53 AOCS peroxide index Cd 8-53
- meq/kg 5 meq / kg 5
- Ausencia de contaminación TW26 Absence of contamination TW26
- CFU/g 100 CFU / g 100
- microbiana microbial
Comportamiento a la degradación a altas temperaturas Degradation behavior at high temperatures
Ensayo de degradación realizado en atmósfera de nitrógeno a presión Degradation test performed under nitrogen atmosphere under pressure
atmosférica atmospheric
Sample: Jojoba_N2 File: Z: ...\jojoba\Aceite Jojoba_n2.001 Sample: Jojoba_N2 File: Z: ... \ jojoba \ Oil Jojoba_n2.001
Size: 8.9012 mg DSC-TGA Run Date: 8-Jun-10 19:13 lnstrument: 2960 SDTV3.0F Size: 8,9012 mg DSC-TGA Run Date: 8-Jun-10 19:13 lnstrument: 2960 SDTV3.0F
120-.,.-----------------------------------,-0o 120 -., .-----------------------------------, - 0o
30 -0.5 30 -0.5
a o to o
e: and:
:§ 20 -1.0 Oi : § 20 -1.0 Oi
2i ">R. ~2i "> R. ~
!2.-:E ! 2 .-: E
3:3:
E GO Cl oE GO Cl o
Cl ·¡¡; Cl · ¡¡;
¡¡:iii ¡¡Iii
~ ro~ ro
s :> Q) s:> Q)
- --
- ~ 10 •1•i I ~ 10 • 1 • i I
o or
-------------0 -2.0 ------------- 0 -2.0
100 200 300 400 500 Exo Up Temperature (°C) Universal V3.9A TAicstr:uments
100 200 300 400 500 Exo Up Temperature (° C) Universal V3.9A TAicstr: uments
!Ensayo Unidad Método Resultado ! Test Unit Method Result
- Densidad a 15 °C Density at 15 ° C
- Kg/L ASTM D 40:'2-09mod 0.8685 Kg / L ASTM D 40: '2-09mod 0.8685
- Viscosidad Cinemática a 40"C Kinematic Viscosity at 40 "C
- nun2/s AST:VI D 445-09mod 24.96 nun2 / s AST: VI D 445-09mod 24.96
- Punto de Inílamación Pl1v1 (Proc.A) Flash Point Pl1v1 (Proc.A)
- oc ASTM D 93-08mod >200 oc ASTM D 93-08mod > 200
- Agua KF KF water
- mgikg IP 43910 lmod 234 mgikg IP 43910 lmod 2. 3. 4
- Punto de Congelación Freezing point
- oc AST\1 D 93-09mod +9 oc AST \ 1 D 93-09mod +9
- Corrosión al Cobre (31m. A 50°C) Copper Corrosion (31m. At 50 ° C)
- AST:Yl D 130-04e lmod la AST: Yl D 130-04e lmod the
- 5 5
- "'-inferior a; Fecha de realización de análisis: Febrero 18. 2010. "'- less than; Date of analysis: February 18. 2010.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES201000828A ES2396282B1 (en) | 2010-06-24 | 2010-06-24 | EMPLOYMENT OF JOJOBA OIL AS CALO-CARRIER FLUID (HTF). |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES201000828A ES2396282B1 (en) | 2010-06-24 | 2010-06-24 | EMPLOYMENT OF JOJOBA OIL AS CALO-CARRIER FLUID (HTF). |
Publications (2)
Publication Number | Publication Date |
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ES2396282A1 ES2396282A1 (en) | 2013-02-20 |
ES2396282B1 true ES2396282B1 (en) | 2014-02-05 |
Family
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Application Number | Title | Priority Date | Filing Date |
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ES201000828A Expired - Fee Related ES2396282B1 (en) | 2010-06-24 | 2010-06-24 | EMPLOYMENT OF JOJOBA OIL AS CALO-CARRIER FLUID (HTF). |
Country Status (1)
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Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4664821A (en) * | 1984-11-13 | 1987-05-12 | Wynn Oil Company | Lubricant additive concentrate containing isomerized jojoba oil |
AU602422B2 (en) * | 1987-08-21 | 1990-10-11 | International Lubricants Inc. | Jojoba oil and jojoba oil derivative lubricant compositions |
DE19846494B4 (en) * | 1998-10-09 | 2004-08-12 | gwk Gesellschaft Wärme Kältetechnik mbH | Process for heating consumers |
DE202006016781U1 (en) * | 2006-11-03 | 2007-01-11 | Industrie-Rohr-Bau Gmbh | Autoclave has a fast turn-round operating cycle using an internal cooler linked by a heat transfer fluid closed circuit to a heat exchanger in an evaporative water cooling tower |
-
2010
- 2010-06-24 ES ES201000828A patent/ES2396282B1/en not_active Expired - Fee Related
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