Kalpeshkumar Vasantbhai Modi
@gecbj.cteguj.in
Professor and Head
Government Engineering College, Bhuj
EDUCATION
Ph. D., Indian Institute of Technology, Delhi
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Kalpesh V. Modi, Shirish K. Patel, and Aakash M. Patel
Elsevier BV
Jugal M. Panchal, Kalpesh V. Modi, Santosh B. Chaudhary, Pushprajsinh B. Jadeja, and Vikas J. Patel
Elsevier BV
Kalpesh Modi and Indramani Pandey
Elsevier BV
D.L. Shukla and K.V. Modi
Elsevier BV
K.V. Modi, P.R. Patel, and S.K. Patel
Elsevier BV
Kalpesh V. Modi and Anurag R. Gamit
Elsevier BV
Kalpesh V. Modi and Amarkumar R. Shah
Springer Science and Business Media LLC
Rapid growth in population and industrialization causes the worldwide crisis for potable water, which is emphasizing on researchers to find an alternative way. Solar still is a solar energy-based device facing the problem of low productivity. The motive of the present investigation is to improve the productivity of triangular pyramid solar still by incorporating triangular cross-sectional aluminium hollow-fins and wool cloth wick-fins. In two sets of experiments, the performance of the triangular pyramid solar still with hollow-fins, wick-fins, and without fins has been compared for the case of partially and fully submerged fins. The total distillate outputs per day (including nocturnal duration) from stills for the case of partially submerged fins were: 2.5674 L/m2 (12.36% higher) with hollow-fins, 2.5481 L/m2 (11.51% higher) with wick-fins, and 2.2850 L/m2 for without fins. For the case of partially submerged fins, the productivity was observed higher for the still with wick-fins during morning hours (9:00 h to 13:00 h), whereas for the still with hollow-fins during afternoon hours (14:00 h to 17:00 h). For the case of fully submerged fins, total distillate outputs per day (including nocturnal duration) from stills were: 2.2529 L/m2 (9.00% higher) with hollow-fins, 2.3042 L/m2 (11.49% higher) with wick-fins, and 2.0668 L/m2 for without fins. For the still with hollow-fins and wick-fins, efficiency was improved by 13.22% and 15.70% in the case of partially submerged fins, and 17.36% and 29.34% in the case of fully submerged fins. The enhancement in the efficiency of the still with wick-fins and hollow-fins was observed higher for the case of fully submerged fins than the case of partially submerged fins.
Hemantchandra N. Patel and Kalpesh V. Modi
Elsevier BV
Jugal M. Panchal, Kalpesh V. Modi, and Vikas J. Patel
Elsevier BV
Kalpesh V. Modi, Urvish N. Patel, Siddhant J. Patel, Jay N. Patel, and Saurang R. Patel
Elsevier BV
Kalpesh V. Modi, Shailendra R. Maurya, Jayesh H. Parmar, Ajay B. Kalsariya, and Parth B. Panasara
Elsevier BV
Hiren U. Tandel and Kalpesh V. Modi
Elsevier BV
Kalpesh Modi and Hardik Jani
Elsevier BV
Dhruvin Shukla and Kalpesh Modi
Elsevier BV
Kuldeep H. Nayi and K. V. Modi
Springer Science and Business Media LLC
Low productivity of single-slope solar still is the main barrier for its worldwide usability. An attempt has been conducted to enhance the distillate yield of single basin square pyramid solar still using thermal storage material in basin. The experiments were conducted with two identical single basin square pyramid solar stills under the climate of location (20.61° N 72.91° E), one with small pieces of black granite as a thermal storage material and other without black granite. With and without thermal storage, the effect of saline water depth (30 and 20 mm) was investigated on the performance of still. Compared to still without thermal storage, yield of 1430.40 mL m −2 (13.96% higher) and 1380.40 mL m −2 (6.63% higher) was obtained at water depth of 30 mm and 20 mm for the still with thermal storage. The daily average efficiency of 18.69% (11.35% higher) and 18.58% (5.09% higher) was obtained at water depth of 30 mm and 20 mm for the still with thermal storage. The higher yield was achieved at water depth of 30 mm than the 20 mm for the still with thermal storage, whereas the higher yield was achieved at water depth of 20 mm than the 30 mm for the still without thermal storage. Transient model for the still with and without thermal storage was developed, and the results were compared with experimental outcomes and good agreement was observed.
Kalpesh V. Modi, Hardik K. Jani, and Ilesh D. Gamit
Springer Science and Business Media LLC
The thermal performance of solar still can be enhanced by means of nanoparticles. The core aim of the present work is to identify the influence of nanoparticles on productivity of single-basin dual-slope solar still through the experimental investigation with different glass cover orientations of still and the varying water depth in basin. Two identical single-basin dual-slope solar stills were fabricated, and experiments were conducted at location (20.61° N, 72.91° E). In first set of experiments, comparison of productivity of the still without nanoparticles and the still with 0.1% mass concentration of aluminium oxide (Al2O3) nanoparticles has been made at different depths of water. The experiments were conducted with glass covers oriented towards East–West and North–South directions. Compared to the still without nanoparticles, enhancement of 19.40%, 28.53% and 26.59% in distilled output was obtained with Al2O3 nanoparticles at the 30 mm, 20 mm and 10 mm water depth for the North–South orientation, respectively. The enhancement of 58.25% and 56.31% in yield was obtained for 20 mm and 10 mm water depth with copper oxide (CuO) nanoparticles for the North–South orientation. Compared to the still with 0.1% Al2O3 nanoparticles, 27.27% and 26.60% higher productivities were achieved at 20 mm and 10 mm water depths with the use of 0.1% CuO nanoparticles for the glass covers oriented towards North–South directions. Therefore, enhancement in thermal performance of single-basin dual-slope solar still was observed higher with the consumption of CuO nanoparticles than the Al2O3 nanoparticles.
Kalpesh Modi, Dhruvin Shukla, Brijesh Bhargav, Jayesh Devaganiya, Rahul Deshle, Jaysukh Dhodi, Dhruvil Patel, and Alpesh Patel
Elsevier BV
Dhruvin L. Shukla, Amit U. Mehta, and Kalpesh V. Modi
Informa UK Limited
ABSTRACT The environmental friendly sources of power have been explored due to increased environment degradation. In this regard, wind energy may be a viable option. A renewed involvement in Vertical axis wind turbines (VAWT) was found. A wide variety of factors such as the cut-in, cut-out wind speed will decide the beneficence of VAWT as a function of energy production and reliability. In this research work, 2D computational fluid analysis of an aggregate small type of vertical axis wind turbine is performed using pecuniary codes of GAMBIT 2.3 and FLUENT 6.3. At starting, the simulation model and numerical method of small type of vertical axis wind turbine is presented in detail having classical NACA0018, NACA0021 and NACA0025 three-bladed rotor. The result shows that NACA0025 bladed rotor has the highest moment of 2.9195 Nm and power 43.7924 W at a tip speed ratio = 6.
Shirish K. Patel and Kalpesh V. Modi
Elsevier BV
Kalpesh V. Modi and Jenish G. Modi
Elsevier BV
Kalpesh V. Modi and Kuldeep H. Nayi
Elsevier BV
Kalpesh V. Modi, Kuldeep H. Nayi, and Sonu S. Sharma
Elsevier BV
Kalpesh V. Modi, Dhruvin L. Shukla, and Dipak B. Ankoliya
ASME International
In major region of the world, ample amount of fresh water is required for the drinking purpose as well as for the agricultural and industrial growth. Hence, it is necessary to investigate the alternate clean water extraction technologies to get the potable water from the saline water available at local area or inside the earth. One of the methods used to get the fresh water from the brackish water is solar distillation and the means used is called as a solar still. In the present work, single slope double basin solar still performance has been investigated with and without using Al2O3 nanoparticles at the location 20.61°N, 72.91°E. For the experimentation, two identical single slope double basin solar stills were fabricated with the same basin area. The yield of solar still, one without nanoparticles and the other with Al2O3 nanoparticles, has been measured for various weight concentrations of Al2O3 nanoparticles such as 0.01%, 0.05%, 0.10%, and 0.20%. The results show that the use of nanoparticles in solar still increases the distilled output by 17.6%, 12.3%, 7.2%, and 2.6% for weight concentrations of 0.01%, 0.05%, 0.10%, and 0.20%, respectively, in comparison to the solar still without nanoparticles.
Dhruvin L. Shukla and Kalpesh V. Modi
Elsevier BV