A5058483036- Heat Transfer Mechanisms
- Fluid Dynamics and Turbulent Flows
- Solar Thermal and Photovoltaic Systems
- Heat Transfer and Optimization
- Tribology and Lubrication Engineering
- Phase Change Materials Research
- Nanofluid Flow and Heat Transfer
- Solar Energy Systems and Technologies
- Phytochemicals and Antioxidant Activities
- Photovoltaic System Optimization Techniques
- Erosion and Abrasive Machining
- solar cell performance optimization
- Environmental Impact and Sustainability
- Chemistry and Chemical Engineering
- Aerodynamics and Fluid Dynamics Research
- Microbial bioremediation and biosurfactants
- Food Drying and Modeling
- Adsorption and Cooling Systems
- Microencapsulation and Drying Processes
- Advanced Battery Technologies Research
- Sustainable Building Design and Assessment
- Water-Energy-Food Nexus Studies
- Turbomachinery Performance and Optimization
- Coagulation and Flocculation Studies
- Heat transfer and supercritical fluids
Indian Institute of Technology Roorkee
2022-2025
Uttaranchal University
2020-2022
Dehradun Institute of Technology University
2021
Himachal Pradesh University
2017-2018
Shoolini University
2012-2017
Baddi University of Emerging Sciences and Technologies
2010-2012
National Institute of Technology Hamirpur
2012
In this study, an experimental investigation of indirect solar dryer integrated with phase change material has been carried out for drying Valeriana Jatamansi. The experimentation performed under the climatic conditions Himalayan region, Solan (latitude − 30.91°N, longitude 77.09°E), Himachal Pradesh (India) in month October-November 2016. Paraffin RT-42 used as a dryer. Using system, moisture content rhizomes reduced from 89% to 9% 5 days compared heat pump and shade drying, which took 8 14...
The influence of heat transfer and frictional characteristics air that is turbulent transitting rectangular channel textured by novel hybrid roughness (multi-V shaped ribs combined with hemispherical protrusion in V-fashion) has been studied experimentally. A uniform solar intensity 1000 W/m2 incident over the opposite side roughened plate. relative pitch, angle attack, Reynolds number, hydraulic diameter, gap width majorly thermal heater. In this research paper, effect number from 4281 to...
Abstract The current work analyses the thermal (ηth) and effective efficiency (${\eta}_{\mathrm{eff}}$) of a solar air collector (STAC) that has an arc-shaped dimple as roughness geometry on absorber plate. Nusselt number (Nu) friction factor (ff) were computed for during testing, which was done STAC. Additionally, different values, correlations Nu ff developed further used in this study. temperature rise parameter parametric design are to assess these efficiencies. influence variables STAC...
A current investigation deals with experimental analysis of the heat transfer behavior and optimum relative width parameter solar air channel aspect ratio 10.0 60° angled broken multiple V-type baffles. The experiment enclosed a wide range such as Reynolds number varied from 3000 to 8000, 1.0 6.0, baffle height 0.5, pitch 10.0, discrete distance 0.67 gap 1.0. obtained results showed that higher overall thermal performance occurred at 5.0. Also, reveal baffles are thermo-hydraulically...
The present study describes the optimization of spacer length parameter perforated delta-shaped winglets (PDWs) imposed on absorber plate solar air heater (SAH). An experimental set up is designed to analyze influence artificial roughness (AR) variation thermo-hydraulic performance SAH. variable PDWs (Spdw) which varies from0 mm 300 in steps 100 mm. impact Spdw Nusselt number (Nupdw), friction factor (frpdw) and (ηpdw) investigated. fixed parameters are relative height = 0.8, longitudinal...
This study presents a novel hybrid roughness configuration for solar heat collectors (SHCs), combining wired and protrusion rib to address the global demand sustainable energy solutions. By leveraging induce localized turbulence near absorber plate ribs disrupt laminar sublayer without adding significant material mass, proposed design enhances thermal performance while minimizing environmental economic costs. The experimental investigation evaluates effects of relative width (W/w), gap...
Small hydropower (SHP) systems are widely considered environmentally sustainable, but they still contribute to emissions during the construction and maintenance phase. This study evaluates life cycle acidification potential of different SHP projects in India using assessment (LCA) techniques. SO2eq from these vary between 0.065 0.325 g/kWh, depending on project type—run-of-river, canal-based, or dam-toe—as well as their respective size (capacity) location. The predictive models developed...
An experimental investigation of dimple-shape roughness element arranged in angular fashion has been carried out to see the effect on heat transfer and friction characteristics rectangular duct solar air heater. Duct an aspect ratio (W/H) 11, relative pitch (p/e) range 10–20, height (e/D) 0.021–0.036, angle arc (α) 45°−75°, Reynolds number (Re) ranges from 3600 18 000. The effects factor have discussed. It also observed that thermohydraulic performance roughened heater increases with...
This work presents the results of an experimental study thermohydraulic performance rectangular channel having discrete V-pattern baffle attached on broad wall. Measurements have been carried out for aspect ratio 10, Reynolds number from 3000 to 21000, relative height value 0.50, pitch 1.5, gap width 1.0, flow attack angle 60°, and distance values 0.26 0.83. The heat transfer friction factor data obtained were compared with a smooth wall under similar operating conditions. In comparison...
In this work, the effect of angle attack [Formula: see text] discrete V-pattern baffle on thermohydraulic performance rectangular channel has been studied experimentally. The wall was constantly heated and other three walls were kept insulated. experimentations conducted to collect data Nusselt number friction factor by varying Reynolds ( Re) = 3000–21,000 from 30° 70°, for values relative height text], pitch ratio width distance text]. As compared smooth wall, roughened enhances 4.2 5.9...
This work deals with the experimental investigation on heat transfer, friction factor, and thermal hydraulic performance of V-pattern dimpled obstacles in an air passage. The experiments were conducted a turbulent flow regime Reynolds number ranging from 5,000 to 17,000 using as working fluid under uniform wall flux boundary condition. encompassed geometrical parameter, namely relative width varying , ratio depth print diameter () 0.50 2.0, pitch 8.0 to11.0, height 0.037, angle attack 35°...
The irreversible absorption of solar energy accompanied by emission for conversion into thermal takes place at the cost exergy losses from collector and effectiveness this is evaluated in terms efficiency based upon second law thermodynamics. Presented paper exergetic impinging jet its comparison with that conventional collector. effect flow Reynolds number, diameter, streamwise spanwise pitch between jets on air during has been studied correlations developed heat transfer coefficient...