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.


Singh R.,THDC Institute of Hydropower Engineering and Technology | Chauhan S.,Govind Ballabh Pant University of Agriculture & Technology | Gope P.C.,Govind Ballabh Pant University of Agriculture & Technology
Procedia Engineering | Year: 2017

The increased application of aluminum alloy in the past decades in automotive industries has suggested the researchers to study its behavior under different loading conditions and applications. Tungsten inert gas (TIG) welding in aluminum alloy is one of the widely used methods to manufacture the automobile parts. The strength of welded components may differ under different loading conditions. Moreover, if cracks develop in the welded components during their service period, it makes the working conditions worst. The working efficiency of same component may differ at different strain rates. The effect of strain rate on the fracture behavior of aluminum alloy containing cracks or notches is important to be studied to predict the failure of the component. The present work describes an experimental investigation to study the influence of high strain rates on the fracture behavior and tensile properties of welded 6061 aluminum alloy. The tensile tests have been performed on 100 kN Universal Testing Machine under uniaxial static loading. At higher strain rates, considerable increase in yield strength and ultimate tensile strength has been observed. This may be due to insufficient elastic recovery time at higher crosshead speed, and thus the yield as well as ultimate strength of the material increases. © 2017 The Authors.


Ranjan P.,THDC Institute of Hydropower Engineering and Technology
Communications in Computer and Information Science | Year: 2017

This Paper presents a microstrip rectangular patch antenna for satellite communication. This antenna resonates at 15.88 GHz which comes under Ku band. The advantage of this antenna is 5.5 dBi gain and the antenna size is reduced up to 15% to conventional antenna. This microstrip antenna size reduced by Optimization technique. The proposed antenna design has good directivity and sharp narrow band. VSWR of the antenna is almost equal to 1. Impedance matching is perfect and it is almost 50 Ω. Edge side cut Feeding technique is used in this paper which is simple to design. Simulation has been performed by HFSS software. © Springer Nature Singapore Pte Ltd. 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.


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.


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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