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| 1 | Heat transfer and parametric studies of an encapsulated phase change material based cool thermal energy storage system显示文摘This work investigates the transient behaviour of a phase change material based cool thermal energy storage (CTES) system comprised of a cylindrical storage tank filled with encapsulated phase change materials (PCMs) in spherical container integrated with an ethylene glycol chiller plant. A simulation program was developed to evaluate the temperature histories of the heat transfer fluid (HTF) and the phase change material at any axial location during the charging period. The results of the model were validated by comparison with experimental results of temperature profiles of HTF and PCM. The model was also used to investigate the effect of porosity, Stanton number, Stefan number and Peclet number on CTES system performance. The results showed that increase in porosity contributes to a higher rate of energy storage. However, for a given geometry and heat transfer coefficient, the mass of PCM charged in the unit decreases as the increase in porosity. The St number as well as the Ste number is also influential in the performance of the unit. The model is a convenient and more suitable method to determine the heat transfer characteristics of CTES system. The results reported are much useful for designing CTES system. | CHERALATHAN M. VELRAJ R. RENGANARAYANAN S. | 2006 | Journal of Zhejiang University-Science A(Applied Physics & Engineering)2006，7，11： | 13 |
| 2 | Experimental investigation and numerical simulation analysis on the thermal performance of a building roof incorporating phase change material (PCM) for thermal management显示文摘 | A. Pasupathy L. Athanasius R. Velraj R.V. Seeniraj | 2007 | Applied Thermal Engineering2007，，5： | 1 |
| 3 | HEAT TRANSFER ENHANCEMENT IN A LATENT HEAT STORAGE SYSTEM 1 Paper presented at the ISES Solar World Congress, Taejon, South Korea, 24–29 August 1997. 1显示文摘 | R. Velraj R.V. Seeniraj B. Hafner C. Faber K. Schwarzer | 1999 | Solar Energy1999，，3： | 1 |
| 4 | HEAT TRANSFER ENHANCEMENT IN A LATENT HEAT STORAGE SYSTEM 1 Paper presented at the ISES Solar World Congress, Taejon, South Korea, 24–29 August 1997. 1显示文摘 | R. Velraj R.V. Seeniraj B. Hafner C. Faber K. Schwarzer | 1999 | Solar Energy1999，，3： | 1 |
| 5 | Enhanced heat transfer characteristics of water based copper oxide nanofluid PCM (phase change material) in a spherical capsule during solidification for energy efficient cool thermal storage system显示文摘 | P. Chandrasekaran M. Cheralathan V. Kumaresan R. Velraj | 2014 | Energy2014，，： | 1 |
| 6 | Study on performance of a packed bed latent heat thermal energy storage unit integrated with solar water heating system显示文摘In thermal systems such as solar thermal and waste heat recovery systems, the available energy supply does not usually coincide in time with the process demand. Hence some form of thermal energy storage (TES) is necessary for the most effective utilization of the energy source. This study deals with the experimental evaluation of thermal performance of a packed bed latent heat TES unit integrated with solar flat plate collector. The TES unit contains paraffin as phase change material (PCM) filled in spherical capsules, which are packed in an insulated cylindrical storage tank. The water used as heat transfer fluid (HTF) to transfer heat from the solar collector to the storage tank also acts as sensible heat storage material. Charging experiments were carried out at varying inlet fluid temperatures to examine the effects of porosity and HTF flow rate on the storage unit performance. The performance parameters such as instantaneous heat stored, cumulative heat stored, charging rate and system efficiency are studied. Discharging experiments were carried out by both continuous and batchwise processes to recover the stored heat, and the results are presented. | NALLUSAMY N SAMPATH S. VELRAJ R. | 2006 | Journal of Zhejiang University-Science A(Applied Physics & Engineering)2006，7，8： | 1 |
| 7 | HEAT TRANSFER ENHANCEMENT IN A LATENT HEAT STORAGE SYSTEM 1 Paper presented at the ISES Solar World Congress, Taejon, South Korea, 24–29 August 1997. 1显示文摘 | R. Velraj R.V. Seeniraj B. Hafner C. Faber K. Schwarzer | 1999 | Solar Energy1999，，3： | 1 |
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