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Keywords: phase change materials
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Journal Articles
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. November 2010, 132(4): 041006.
Published Online: September 3, 2010
...R. Pokhrel; J. E. González; T. Hight; T. Adalsteinsson The addition of latent heat storage systems in solar thermal applications has several benefits including volume reduction in storage tanks and maintaining the temperature range of the thermal storage. A phase change material (PCM) provides high...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. August 2010, 132(3): 031014.
Published Online: June 28, 2010
... to the phase changing material, which is today seen as most suitable for a 500 ° C DSG power plant, the main steam pressure at the storage system has to be 156 bars. Hence, a generic turbine based on an extrapolation of the Siemens SST-700 ( 6 ) was used for the power block layout. For the 400...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. May 2010, 132(2): 021011.
Published Online: May 10, 2010
... the two-phase heat transfer fluid poses a major challenge. A three-part storage system is proposed where a phase change material (PCM) storage will be deployed for the two-phase evaporation, while concrete storage will be used for storing sensible heat, i.e., for preheating of water and superheating...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. May 2010, 132(2): 021003.
Published Online: April 29, 2010
... heating and refrigeration applications, the experience for the power level and temperature range characteristic of solar process heat and solar thermal power plants is limited. Cost effective implementation of the latent heat storage concept demands low cost phase change materials (PCMs). These PCMs...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. November 2009, 131(4): 041011.
Published Online: September 30, 2009
... from the design, and experimental performance evaluation of high capacity thermal energy storage using so-called phase change materials (PCMs) as the storage media. A 140 l 15 kW h storage prototype was designed, built, and experimentally evaluated. The storage tank was directly filled with the PCM...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. November 2009, 131(4): 041009.
Published Online: September 22, 2009
... power density is in the range 10 – 25 kW / m 3 , so it is proven that the major problem of phase change material (PCM) storage of low heat transfer rates has been overcome and high-temperature PCM storage with large capacity factor is possible. 22 12 2008 21 04 2009 22 09 2009...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. November 2009, 131(4): 041006.
Published Online: September 18, 2009
... materials with the inclusion of phase change materials (PCM). PCM are a suitable and promising technology for this application. This paper presents an experimental setup to test PCM with various typical insulation and construction materials in real conditions in Puigverd de Lleida (Lleida, Spain). Nine...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. November 2009, 131(4): 041002.
Published Online: September 17, 2009
... technique is used to develop the numerical model to obtain the temperature profiles of both the phase change material (PCM) and heat transfer fluid (HTF), and the molten mass fraction of the PCM at any axial location of the cylindrical storage tank during the charging process. The model also incorporates...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Sol. Energy Eng. May 2009, 131(2): 024501.
Published Online: March 25, 2009
... for this purpose. On the other hand, in applications with small temperature changes, phase change materials (PCMs) provide high energy density since the latent heat is much larger than the sensible heat. This is the case of stratified hot water tanks, where the temperature change in the top layer is small...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. February 2008, 130(1): 011004.
Published Online: December 28, 2007
...Wolf-Dieter Steinmann; Rainer Tamme Solar thermal systems, including direct steam generation in the absorbers, require isothermal energy storage systems. One option to fulfil this requirement is the application of phase change materials (PCMs) to absorb or release energy. The implementation of cost...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. November 2007, 129(4): 458–464.
Published Online: May 11, 2007
...K. S. Reddy The thermal modeling and analysis of a transparent insulation materials (TIM) covered solar integrated collector storage (ICS) water heating system with phase-change material (PCM) is carried out in this paper. The system consists of a double rectangular enclosure of cross section 1 m...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. May 2006, 128(2): 173–177.
Published Online: December 6, 2005
...L. H. Alva S.; J. E. González; N. Dukhan This paper investigates the technical feasibility of innovative solar collectors. The proposed collectors have a phase change material (PCM) integrated into them as the storage mechanism. The PCM-integrated solar collector eliminates the need of conventional...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. May 2006, 128(2): 178–188.
Published Online: September 6, 2005
...S. Mozhevelov; G. Ziskind; R. Letan The objective of this work is to study the feasibility of temperature moderation inside a room using a phase-change material (PCM) which is stored in storage units. A real-size room which is at temperature conditions typical in a desert region in summer...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Sol. Energy Eng. August 2005, 127(3): 357–365.
Published Online: July 20, 2005
... minutes, respectively. Calculations show that the Nusselt number in the phase change material (PCM) during melting is one order of magnitude higher than during solidification. Results indicate that the Nusselt number for melting has a strong dependence on the sphere diameter, lower dependence on the air...