THDC Institute of Hydropower Engineering and Technology

Tehri, India

THDC Institute of Hydropower Engineering and Technology

Tehri, India
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Pandey P.S.,THDC Institute of Hydropower Engineering and Technology | Aghwariya M.K.,THDC Institute of Hydropower Engineering and Technology | Ranjan P.,THDC Institute of Hydropower Engineering and Technology | Rani G.,THDC Institute of Hydropower Engineering and Technology
Advances in Intelligent Systems and Computing | Year: 2017

This paper presents a successful designing of the theremoelectric refrigerator system based on Peltier effect at very low cost. In this system semiconductor-based electronic components are used which is the function of small heat pumps. On giving a low DC voltage (4 V) to the thermoelectric module system, heat moves through the module from one side to the other. One side of the module is therefore cooled, while the other side simultaneously heats up. The module can sink the heat from one side. The system is very useful for medicine which required the constant temperature such as insulin for diabetic patients. © Springer Science+Business Media Singapore 2017.


Ranjan P.,THDC Institute of Hydropower Engineering and Technology | Aghwariya M.K.,THDC Institute of Hydropower Engineering and Technology | Pandey P.S.,THDC Institute of Hydropower Engineering and Technology | Prasanthi N.,UPES
Advances in Intelligent Systems and Computing | Year: 2017

This paper presents a successful designing of microstrip patch antenna at the center frequency of 5.9 GHz with cylindrical metallic PINs structure in between two dielectric materials. The bandwidth is increased by inserting cylindrical PINs structure and using the capacitive coupled coplanar strip feed. The PINs are made by copper wire. The bandwidth of prototype is approximately 3.25 GHz. Prototype structure is on a RT/Duroid substrate, with the dielectric constant of 3.0, thickness of the substrate is 1.56 mm, and the feeding is provided by capacitive coupled feeding patch of the dimensions of 3.7 mm × 1.2 mm. The structure has then been modeled and simulated using Ansoft HFSS. © Springer Science+Business Media Singapore 2017.


Varun,National Institute of Technology Hamirpur | Sharma A.,Lovely Professional University | Shree V.,National Institute of Technology Hamirpur | Nautiyal H.,THDC Institute of Hydropower Engineering and Technology
Sustainable Cities and Society | Year: 2012

This paper quantifies the significant environmental effects of a three storey building in Northern India. The building has a floor area of 3960 m 2 and projected service life of 50 years. In this study, a comprehensive life cycle environmental assessment of the building was conducted to find out the energy consumption and greenhouse gas (GHG) emissions by the building. This study shows that RCC framework and steel in the building are the highest contributor in GHG emissions for all three floors. Also, it has been shown that second floor has the biggest share in contribution to the total impact. In addition to this, 59% of the total energy is consumed only in the operation phase. In most of the buildings, life cycle phases have significant impact in some category, however; only two life cycle phases viz. construction and operation seem to be more significant in all impact categories (energy and emissions). © 2012 Elsevier B.V.


Nautiyal H.,THDC Institute of Hydropower Engineering and Technology | Varun,National Institute of Technology Hamirpur
Renewable and Sustainable Energy Reviews | Year: 2012

Kyoto protocol was the first agreement regarding control of climate change problems. Clean development mechanism (CDM) was included in the Kyoto protocol to promote sustainable development in developing countries (non-Annex I countries) and assist developed countries (Annex I countries) to achieve their emission reduction targets. CDM allows trading of emissions reductions and helps to increase sustainable development in a developing country and reduce global emissions in developed country. Renewable energy sources are the appropriate alternatives for sustainable development through CDM. India is one of the emerging nations in renewable energy sector. Government of India is trying to enhance energy generation through renewable and carbon trading. This paper shows the current status and progress of renewable energy through CDM in India. © 2012 Elsevier Ltd. All rights reserved.


Varun,National Institute of Technology Hamirpur | Garg M.O.,Indian Institute of Petroleum | Nautiyal H.,THDC Institute of Hydropower Engineering and Technology | Khurana S.,Gurukul Vidyapeeth | Shukla M.K.,Indian Institute of Petroleum
Renewable and Sustainable Energy Reviews | Year: 2016

Heat transfer enhancement is an important matter of concern for energy conservation and also beneficial from economic point of view. The use of passive devices like twisted tapes, roughness elements, wires inserts etc. are effective methods of heat transfer augmentation. Many research studies on different types of twisted tapes geometries to increase heat transfer rate have been carried out. Also, several correlations were developed to determine heat transfer and friction factor for twisted tape inserts. In the present study, a review on work done in the area of heat transfer augmentation using twisted tapes has been carried out. Previous experimental and numerical studies on various types of twisted tapes (based on the literature survey) were discussed. These studies reveal that the future research in the area of twisted tapes will bring more development in the heat exchanger systems. The optimum shape for twisted tapes can also be developed based on maximisation of heat transfer and minimisation of friction factor regarding fluid used in the system. © 2016 Elsevier Ltd.


Singh A.N.,Gujarat Forensic Sciences University | Sharma P.K.,THDC Institute of Hydropower Engineering and Technology | Agrawal Y.K.,Gujarat Forensic Sciences University
Applied Spectroscopy Reviews | Year: 2014

Photoacoustic spectrophotometer (PAS) has emerged as the most promising technology with its promise to resolve unmet issues in various domains. The advantages of PAS are nonvulnerability of the sample, trace quantity sample analysis, and short response time. Though it showed distinguished features close to its emergence, it is bereft of its importance in the present scenario. Certainly, there exists a transparent gap in understanding the current situation in forensic crime scene management and the application of PAS within the same discipline. This article aims to consolidate all this information to fill an existing knowledge gap and tries to establish trajectory of research done up to now. This article will also pinpoint the reasons behind why this advanced technique could not accomplish its respectable feat inside the market and restraint of optical business toward inventing and commercializing this merchandise. © 2014 Taylor & Francis Group, LLC.


Tripathi R.,THDC Institute of Hydropower Engineering and Technology | Kumar A.,P.A. College
Advanced Science Letters | Year: 2014

2-mercaptoethanol capped nanoparticles of cadmium selenide (CdSe) have been prepared in methanol through chemical technique. Nanostructures of the prepared CdSe particles have been confirmed through X-ray diffraction (XRD) and transmission electron microscopy (TEM) measurement. The Debye–Scherrer formula is used to obtain the particle size. The average size of the prepared CdSe nanoparticles is found to be 50 nm. The frequency-dependent dielectric dispersion is investigated in the temperature range from 297 K to 383 K and in a frequency range from 100 Hz to 1 MHz by impedance spectroscopy. The frequency-dependent maxima of the imaginary part of impedance are found to obey Arrhenius law with activation energy ∼ 1.8 eV. The frequency-dependent electrical data are analyzed in the framework of conductivity and is obey the power law. © 2014 American Scientific Publishers.


Tripathi R.,THDC Institute of Hydropower Engineering and Technology | Kumar A.,P.A. College
Advanced Materials Research | Year: 2013

Zinc selenide nanoparticle has been synthesized using soft chemical routes. The particles were capped using 2-mercaptoethanol to achieve the stability and avoid the coalescence. The asobtained particles were characterized by X-ray diffraction (XRD), Transmission electron microscopy (TEM), UV-VIS absorption and photoluminescence (PL) spectra. The impedance studies were carried out as a function of frequency (100 Hz-1 MHz) and temperature (298-373 K) by impedance spectroscopy. An analysis of the complex impedance (z' and z") with frequency is performed assuming a distribution of relaxation times. © (2013) Trans Tech Publications, Switzerland.


Sharma S.,Graphic Era University | Sharma S.,THDC Institute of Hydropower Engineering and Technology | Sharma A.,Graphic Era University | Agarwala V.,Indian Institute of Technology Roorkee
Journal of Materials Engineering and Performance | Year: 2016

In the present study, Ni-P-ZnO nanocomposite coating was developed on the surface of mild steel substrate by electroless technique. The second phase ZnO nanoparticles were synthesized by autocombustion method, to incorporate into the Ni-P matrix. 10 g/L of ZnO nanoparticles were added to the Ni-P alkaline bath for co-deposition, and the electroless bath was reduced by sodium hypophosphite. The heat treatment of the as-prepared Ni-P/Ni-P-ZnO coatings was carried out at 400 °C in argon (99.9%) atmosphere for 1 h. The as-prepared and heat-treated Ni-P/Ni-P-ZnO coatings and ZnO nanoparticles were analyzed for surface morphology, elemental composition, phase analysis and particle size distribution using field emission scanning electron microscopy (FESEM), energy-dispersive analysis of x-rays (EDAX), transmission electron microscopy (TEM), powder x-ray diffraction analysis. To determine the calcinations temperature of ZnO powder, differential scanning calorimetry was also carried out. TEM analysis of the synthesized ZnO nanoparticles was also carried out, and from the micrographs a spherical shape of ~40 nm size range is observed for the ZnO nanoparticles. The corrosion properties of the coatings were carried out in a 3.5 wt.% NaCl solution by electrochemical polarization test. The dispersion of ZnO nanoparticles into the coating is determined by FESEM. Atomic force microscopy was used to investigate the change in the surface topography of the coatings before and after exposure in the test environment. A uniform distribution of ZnO nanoparticles into the Ni-P matrix is confirmed by the FESEM-EDAX results. Electrochemical test results suggest that Ni-P-ZnO shows better corrosion resistance as compared to plain Ni-P coating. © 2016, ASM International.


Kumar N.,Indian Institute of Technology Roorkee | Pandey P.S.,THDC Institute of Hydropower Engineering and Technology
International Journal of Smart Home | Year: 2016

Action Dependent Heuristic Dynamic Programming (ADHDP) optimal controller for multi area Automatic Generation Control (AGC) scheme has been designed in this paper. A competitive environment has been considered in the interconnected power system. Conventional AGC model has been modified to include bilateral transactions taking place in energy market. The modified AGC model has been discretized to implement ADHDP. ADHDP is a powerful technique of Approximate Dynamic Programming, used for providing optimal solution by minimizing the given objective function. The proposed approach has been tested on two area AGC scheme for different cases. The results have been compared with the discrete full state feedback controller. © 2016 SERSC.

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