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Co-Authors
- H. K. Gupta
- R. K. Chadha
- M. N. Rao
- B. L. Narayana
- P. Mandal
- N. Kumar
- Y. J. Bhaskar Rao
- Shakeel Ahmed
- Vineet Gahalaut
- Anil Kumar
- N. Purnachandra Rao
- Kusumita Arora
- P. Srinivas
- M. Madhavi
- Girish Kothyari
- Sumer Chopra
- Srinivas Pendyala
- B. Ravi Kumar
- D. C. Mishra
- B. Singh
- D. Ch. Venkat Raju
- M. Singh
- P. Mahesh
- A. Sateesh
- Charu Kamra
- Srinivas Gugulothu
Journals
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Ravi Kumar, M.
- The Jabalpur Earthquake of May 22, 1997
Abstract Views :209 |
PDF Views:2
Authors
H. K. Gupta
1,
R. K. Chadha
1,
M. N. Rao
1,
B. L. Narayana
1,
P. Mandal
1,
M. Ravi Kumar
1,
N. Kumar
1
Affiliations
1 National Geophysical Research Institute, Hyderabad - 560 007, IN
1 National Geophysical Research Institute, Hyderabad - 560 007, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 50, No 1 (1997), Pagination: 85-91Abstract
The Jabalpur earthquake of magnitude 5.8 occurred on May 22, 1997 along seismically active Narmada-Son Lineament (NSL) in central India, with its epicenter about 30 km southeast of Jabalpur. A maximum intensity Io = VIII on MM scale was observed in Jabalpur and surrounding region. The isoseismal map prepared for this earthquake shows NE-SW trend which in general agrees with the focal mechanism solution indicating thrust faulting along a ENE-WSW fault with minor strike-slip component. Several ground cracks mapped in meizoseismal area show a dominant N75° E trend. The damage pattern of the constructions clearly shows a strong correlation with lithology, structures and soil cover of the area. There are no foreshocks reported for this earthquake and only a few aftershocks are recorded. which warrant a close monitoring of this region.Keywords
Earthquake, Seismology, Jabalpur.
- CSIR-National Geophysical Research Institute, Hyderabad
Abstract Views :264 |
PDF Views:96
Authors
Affiliations
1 CSIR–National Geophysical Research Institute, Uppal Road, Hyderabad 500 007, IN
1 CSIR–National Geophysical Research Institute, Uppal Road, Hyderabad 500 007, IN
Source
Current Science, Vol 108, No 11 (2015), Pagination: 2010-2013Abstract
The National Geophysical Research Institute, Hyderabad, under the aegis of the Council of Scientific and Industrial Research, New Delhi, continued its scientific pursuit in many important areas of basic and applied earth sciences research encompassing geophysics, geology, geochemistry, geochronology and geodesy during the year 2014. The Institute is credited with 167 research publications and has accomplished several national and international projects. We give in this article an overview of three select scientific achievements.Keywords
Aquifer Systems, Earth Sciences Research, Mafic Magmatism, Seismic Hazard.Full Text
- Discovery of a Massive Ancient Tectonic Slab in the Southeastern Indian Ocean:Implications for the Indian Ocean Geoid Low
Abstract Views :312 |
PDF Views:77
Authors
Affiliations
1 CSIR-National Geophysical Research Institute, Uppal Road, Hyderabad 500 007, IN
1 CSIR-National Geophysical Research Institute, Uppal Road, Hyderabad 500 007, IN
Source
Current Science, Vol 112, No 03 (2017), Pagination: 449-450Abstract
A surprising discovery of a massive, ancient, subducted tectonic slab in the southeastern Indian Ocean, known as the southeast Indian slab (SEIS), encompassing the entire mantle down to the earth's core raises a whole set of new questions, and offers opportunities to answer some previously outstanding ones. Evidence for SEIS comes from a high-resolution tomographic study by Simmons et al.Full Text
- Experimental Investigations on Thermal Conductivity and Performance Analysis of Filament Wound Fiber Reinforced Heat Exchanger Composite Shell
Abstract Views :159 |
PDF Views:0
Authors
Affiliations
1 Dept of Mechanical Engg., M. V. S. R. Engineering College, Nadergul, Hyderabad, IN
1 Dept of Mechanical Engg., M. V. S. R. Engineering College, Nadergul, Hyderabad, IN
Source
Manufacturing Technology Today, Vol 10, No 10 (2011), Pagination: 10-16Abstract
Advanced composites with their inherent advantages such as strength to weight ratio, became an ideal choice mostly in the fields like aerospace, missiles, submarines and ground structures like heavy military bridges etc. Composite materials also proved to be good insulators and have wide application in boiler tubes, heat exchanger shells and electrical applications. In any power plant apart from the turbine, boiler and pump, the heat exchanger is a vital component. The present investigation proposes EGlass/Vinyl Ester filament wound FRP (Fiber Reinforced Polymer) heat exchanger shell due to its good thermal insulation and noncorrosive properties. Experimental investigation was carried out to determine thermal conductivity on FRP shell. Based on these investigations, a single tube & shell type heat exchanger with copper as tube and FRP as shell is designed and developed in order to carryout performance analysis of a composite shell for both parallel and counter flows for a range of temperatures from 40 °C to 150 °C. The heat exchanger effectiveness for FRP shell is found to be 28% more than mild steel shell in the heat exchanger. The present study recommends that the existing metal boiler shells can be replaced with FRP material due low maintenance cost and less radiation effect.- Shallow Subsurface Investigations for Resource Exploration and Hazard Estimation
Abstract Views :240 |
PDF Views:78
Authors
Affiliations
1 Institute of Seismological Research, Gandhinagar 382 421, IN
1 Institute of Seismological Research, Gandhinagar 382 421, IN
Source
Current Science, Vol 113, No 03 (2017), Pagination: 379-380Abstract
The international workshop which held at ISR, Gandhinagar encompassed five major themes, namely: (i) Exploration of groundwater and minerals; (ii) Geothermal resource mapping; (iii) Air and space-borne geophysical investigations; (iv) Active fault mapping; (v) Seismic hazard assessment (SHA): macro-micro and site specific and societal impact of SHA.Full Text
- Performance Investigation of Two VCR Circuits Connected In Parallel with R134a and HC Blends
Abstract Views :133 |
PDF Views:0
Authors
Affiliations
1 Department of Mechanical Engineering, GITAM University, Hyderabad, IN
2 Department of Mechanical Engineering, MVSR Engineering College, Hyderabad, IN
1 Department of Mechanical Engineering, GITAM University, Hyderabad, IN
2 Department of Mechanical Engineering, MVSR Engineering College, Hyderabad, IN
Source
International Journal of Engineering Research, Vol 5, No SP 2 (2016), Pagination: 495-498Abstract
Early mechanical refrigeration systems employed sulphur dioxide gas or anhydrous ammonia, with small home refrigerators primarily using the former. Being toxic, sulphur dioxide rapidly disappeared from the market with the introduction of CFCs. Refrigerant R12 is one of the most widely used refrigerants used for different applications.R-12 is a CFC and it has unusually high potential to cause the depletion of the ozone layer. Hence it is being replaced by R134a and certain blends. Although R134a is considered as an alternative refrigerant for R12, it has high global warming potential as per the Kyoto protocol it has to be decreased. At present natural refrigerant which is being used is a blend of propane and iso-butane. It operates at similar saturation pressures to R12 or R134A. It is also compatible with most common refrigeration materials and lubricants. HC's are having excellent thermophysical properties, only drawback is the flammability. HC's are not suitable for large cooling capacity plants as it demands more charge of the refrigerant. The present work eliminates the risk of flammable issues of HC refrigerant. Experiments were conducted on two VCR circuits in parallel connection one operating with R134a and the other with HC mixture. Therefore total quantity of the HC charge decreases.Full Text
- Earthquake swarms in Palghar district, Maharashtra, Deccan Volcanic Province
Abstract Views :425 |
PDF Views:78
Authors
Affiliations
1 Institute of Seismological Research, Raisan, Gandhinagar 382 009, IN
1 Institute of Seismological Research, Raisan, Gandhinagar 382 009, IN
Source
Current Science, Vol 118, No 5 (2020), Pagination: 701-704Abstract
The Palghar district of Maharashtra falls in zone III of the seismic zoning map of India, where earthquakes up to magnitude 6.0 can occur1. A swarm activity was started in the Palghar district of Maharashtra in November 2018 and is still continuing (till the end of November 2019). According to reports from the National Centre for Seismology (NCS), more than 1,000 earthquakes of micro-tominor magnitude have occurred in the Dahanu and Talasari talukas of Palghar district, from 3 November 2018 to 15 February 2019. The biggest tremor of magnitude ML 3.7 was recorded on 1 February 2019, at 3.54 PM (IST). The people of Dahanu and Talasari talukas were panicked by the abnormal ground vibration and burst sound that they felt. In fact, Jawahar city in Palghar district has experienced swarms several times earlier.Full Text
References
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- Sokos, E. N. and Zahradnik, J., ISOLA: A Matlab GUI for use with ISOLA fortran codes, USER’s Guide, 2000, Ver. 2.5, p. 34.
- Sateesh, A., Mahesh, P., Singh, A. P., Kumar, S., Chopra, S. and Ravi Kumar, M., Environ. Earth Sci., 2019, 78, 381; doi: 10.1007/s12665-019-8382-1.
- Chopra, S. et al., J. Geol. Soc. India, 2008, 72, 245–252.
- Bhattacharya, S. N. and Dattatrayam, R. S., Gondwana Geol. Magz., 2003, v5, 67–85.
- Srinagesh, D. et al., Geol. Soc. India, 2015, 85, 419–430.
- Improvements, New Innovations and Status of Solar Thermal Power Plants in India
Abstract Views :206 |
PDF Views:0
Authors
Affiliations
1 Mechanical, TPS–II, NLC India Limited, IN
1 Mechanical, TPS–II, NLC India Limited, IN
Source
Indian Journal of Power and River Valley Development, Vol 70, No 1&2 (2020), Pagination: 10-19Abstract
A high solar radiation available in India is a factor to encourage the full development of solar power plants for thermal and electrical energy productions. Most parts of India, Asia experience a clear sunny weather for about 250 to 300 days a year, because of its location in the equatorial sun belt of the earth, receiving fairly large amount of radiation as compared to many parts of the world especially Japan, Europe and the US where development and deployment of solar technologies is maximum. Photovoltaic (PV) and solar thermal technologies are two main ways of generating energy from the sun, which is considered the inexhaustible source of energy. PV converts sunlight directly into electricity whereas in solar thermal technology, heat from the sun’s rays is concentrated to heat a fluid, whose steam powers a generator that produces electricity. Solar thermal technology is more pollution free energy than solar photovoltaic energy.
In this paper, a brief description and working principles of the solar thermal technology are studied. Besides, the paper points out the solar energy potential, the current state of electricity generation and the future of solar thermal power projects in the country. Special attention is drawn to the Indian government initiatives and support for the use of solar energy. In the end, the future prospects of solar projects development with the worldwide competitive technologies by considering the existing obstacles that should be removed by the Indian governments and energy planners in the future of energy production are presented.
Keywords
Solar Thermal Power Plant, Solar Thermal Energy Storage, Concentrating Solar Power, Heat Transfer Fluid (HTF), Thermal Energy Storage (TES), Phase Change Material (PCM).References
- Ministry of New Renewable Energy of India, Annual report 2016-2017.
- IPCC, 2011: IPCC Special Report on Renewable Energy Sources and Climate ChangeMitigation. Prepared by Working Group III of the Intergovernmental Panel on Climate Change [O. Edenhofer, R. Pichs-Madruga, Y. Sokona, K. Seyboth, P. Matschoss, S. Kadner, T. Zwickel, P. Eickemeier, G. Hansen, S. Schlömer, C. von Stechow (eds)]. CambridgeUniversity Press, Cambridge, United Kingdom and New York, NY, USA, 1075 pp. (Chapter 7 & 9).
- REN21. 2017. Renewable 2017 Global Status Report (Paris: REN21 Secretariat).ISBN 978-3-9818107-6-9.
- Mr. Srinivas Gugulothu1, Dr. Jose K. Kakkassery2, Performance study of Solar Thermal Energy Storage, M.Tech Project work
- Thermax Co. Vapour Absorption Machine manuals
- Sukhatme S.P., Solar energy – principles of thermal collection and storage, Tata McGraw- Hill, New Delhi, 1996.
- Solar energy utilization by G.D. Rai, Khanna Publishers, (1993).