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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 | Screening of flavonoid 'quercetin' from the rhizome of Smilax china Linn.for anti-psoriatic activity显示文摘Objective:To assess anti-psoriatic activity of the methanol extract and the isolated flavonoid quercetin from the rhizome of Smilax china(S.china) Linn.Methods:Mouse tail test was used for the evaluation of anti-psoriatic activity.Methanol extract(100 and 200 mg/kg b.w.) and isolated flavonoid quercetin(25 and 50 mg/kg b.w.) were tested in Swiss albino mice.Parameters studied in the mouse tail test were changes in epidermal thickness and percentage orthokeratotic values.The anti-inflammatory role of the methanol extract and isolated flavonoid quercetin was evaluated using carrageenan-induced pleurisy in rats.In vitro antiproliferant assay on HaCaT cell lines was also carried out.Results:The isolated flavonoid quercetin from the rhizome of S.china produced significant orthokeratosis(P<0.01) in the mouse tail test.In epidermal thickness,a significant reduction with respect to control was observed in groups treated with retinoic acid and isolated flavonoid quercetin.The methanol extract(200 mg/kg) and isolated flavonoid quercetin(50 mg/kg) showed anti-inflammatory effect in terms of significant inhibition(P<0.001) in leukocyte migration.Maximum antiproliferant activity was shown by isolated flavonoid quercetin(IC_(50),62.42± 10.20 μg/mL).Conclusions:From the above data,the flavonoid quercetin shows significant orthokeratosis,anti-inflammatory and maximum antiproliferant activities.To our knowledge,this is the first report on the anti-psoriatic effect of the flavonoid quercetin which is promising for further investigations to prove its anti-psoriatic activity. | Vijayalakshmi A Ravichandiran V Malarkodi Velraj Nirmala S Jayakumari S | 2012 | Asian Pacific Journal of Tropical Biomedicine2012，2，4： | 7 |
| 3 | Anti-anaphylactic and anti-inflammatory activities of a bioactive alkaloid from the root bark of Plumeria acutifolia Poir显示文摘Objective:To investigate the anti-anaphylactic,anti-inflammatory and membrane stabilizing properties of plumerianine(compound 1)isolated from the root bark of Plumeria acuifolia Poir.Methods:The anti-anaphylactic activity of compound 1(10,25 and 50 mg/kg)was studied by using models such as passive cutaneous anaphylaxis,passive paw anaphylaxis and its antiinflammatory activity against carrageenin induced paw edema and cotton pellet granuloma in albino rats was also investigated using ketotifen and indomethacin as reference drugs.Results:A dose-dependent beneficial effect was observed on leakage of evans blue dye in skin challenged with antigen and on paw anaphylaxis induced by antiserum.The compound 1 also exhibited significant(P<0.01)inhibition of rat paw edema and granuloma tissue formation,including significant protection of RBC against the haemolytic effect of hypotonic solution,an indication of membrane-stabilizing activity.Conclusions:Anti-anaphylactic activity of compound 1 may be possibly due to inhibition of the release of various inflammatory mediators.Anti-inflammatory activity of compound may be related to the inhibition of the early phase and late phase of inflammatory events. | A Vijayalakshmi V Ravichandiran Malarkodi Velraj S Hemalatha G Sudharani S Jayakumari | 2011 | Asian Pacific Journal of Tropical Biomedicine2011，1，5： | 6 |
| 4 | Transient Thermal Management Comparison of a Microprocessor Using PCMs in Various Configurations显示文摘There has been a strong interest in the use of Phase Change Materials (PCMs) for the transient thermal abatement of high powered microprocessor.This paper presents a set of transient computational analysis for selected IC packages with the purpose of calibrating the merits of PCM in different configurations.The transient analysis of high powered microprocessors with heat sinks was performed as a benchmark for comparison with the same microprocessors fitted with PCM in the following configurations:a) PCM imbedded into the finned region of the heat sink,b) PCM mounted between the microprocessor and heat sink,c) sealed PCM underfill to the microprocessor and d) PCM fitted to the underside of the printed circuit board directly beneath the microprocessor.The analysis was performed using a commercial CFD tool together with an approximation to the phase change mechanism using the slope method.Results indicate the merit of each configuration. | Thenmozhi R Sharmeela C Natarajan P Velraj R | 2011 | Journal of Thermal Science2011，20，6： | 3 |
| 5 | Heat transfer enhancement in a latent heat storage system显示文摘 | VELRAJ R SEENIRAJ R V HAFNER B | 1999 | Solar Energy1999，65，3： | 1 |
| 6 | Heat transfer studies during solidification of PCM inside an internally finned tube 显示文摘 | Velraj R Seeniraj R V | 1999 | Heat Transfer Trans ASME1999，121，2： | 1 |
| 7 | Heat transfer enhancement in a latent heat storage system显示文摘 | Velraj R Seeniraj RV Hafner B Faber C Schwarzer K | 1999 | Solar Energy1999，65，3： | 1 |
| 8 | Experimental analysis and numerical modeling of inward solidification on a finned vertical tube for a latent heat storage unit显示文摘 | Velraj R Seenimj R V Hafner B | 1997 | Solar Energy1997，60，5： | 1 |
| 9 | Phase change material--based building architecture for thermal management in residential and commercial establish- ments 显示文摘 | PASUPATHY A VELRAJ R SEENIRAJ R | 2008 | Renewable and Sustainable Energy Reviews2008，12，1： | 1 |
| 10 | Heat transfer enhancement in a latent heat storage system显示文摘 | VELRAJ R SEENIRAJ R V HAFNER B | 1999 | Solar Energy1999，65，： | 1 |
| 11 | Wake prediction of horizontal-axis wind turbine using full-rotor modeling显示文摘 | Ali M. AbdelSalam Velraj Ramalingam | 2014 | Journal of Wind Engineering & Industrial Aerodynamics2014，，： | 1 |
| 12 | Effect of double layer phase change material in building roof for year round thermal management显示文摘 | A PASUPATHY R VELRAJ | 2008 | Energy and Buildings2008，40，： | 1 |
| 13 | Effect of double layer phase change material in building roof for year round thermal management 显示文摘 | Pasupathy A Velraj R | 2008 | Energy and Buildings2008，3，40： | 1 |
| 14 | Heat transfer enhancement in a latent heat storage system显示文摘 | Velraj R Seeniraj R V Hafner B | 1999 | Solar Energy1999，65，3： | 1 |
| 15 | Effect of double layer phase change material in building roof for year round thermal management 显示文摘 | Pasupathy A Velraj R | 2008 | Energy Buildings2008，40，3： | 1 |
| 16 | Solar cookers with and without thermal storage-A review显示文摘 | Muthusivagami R M Velraj R Sethumadhavan R | 2010 | Renewable and Sustainable Energy Reviews2010，14，2： | 1 |
| 17 | Experimental investigation on a combined sensible and latent heat storage system integrated with constant/varying (solar) heat sources显示文摘 | NALLUSAMY N SAMPATH S VELRAJ R | 2007 | Renewable Energy2007，32，7： | 1 |
| 18 | Heat transfer enhancement in a latent heat storage system 显示文摘 | Velraj R Seeniraj R V Hafner B | 1999 | Solar Energy1999，65，3： | 1 |
| 19 | Heat transfer enhancement in a latent heat storage system显示文摘 | Velraj R Seeniraj R V Hafner B Faber C Schwarzer K | 1999 | Solar Energy1999，65，： | 1 |
| 20 | Experimental analysis and numerical modelling of inward solidification on a finned vertical tube for a latent heat storage unit 显示文摘 | Velraj R Seeniraj R Hafner B | 1997 | Solar Energy1997，60，5： | 1 |
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