Reason-A Technical Journal (Formerly Reason-A Technical Magazine)

Priyabrata Adhikary ¹, Pankaj K. R. Roy ², Asis Mazumdar ²

Affiliations
1 Mechanical Engineering Department, Gargi Memorial Institute of Technology, Kolkata-700144, IN
2 School of Water Resources Engineering, Jadavpur University, Kolkata-700032, IN

Abstract

Selecting the appropriate small hydropower project site in which to invest is a critical task involving different factors and policies. Small hydropower projects are emerging as a solution for sustainable, green, environment friendly and long term, cost effective source of renewable energy in India for the future. Hence such decision-making can be viewed as a multiple criteria analysis problem with correlating criteria and alternatives. This task should take into consideration several conflicting aspects because of the increasing complexity of the social, technological, environmental, and economic factors. Traditional single criteria decision-making approaches cannot handle the complexity of such systems. Multi criteria methods (MCDA) provide a better and flexible tool. This paper aims to evaluate applicability of multi criteria decision aid to decision makers during the small hydropower project planning and development. To the best of the author‟s knowledge this novel approach for application of MCDA to small hydropower project planning and development scenario is absent in renewable energy literatures due to its assessment complexity.

Keywords

Small Hydropower, MCDA, Fuzzy Expert System, Site Selection, GIS.

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Subhasish Das ¹, Biswajit Majumder ¹, Arijit Chakraborty ¹, Bivas Mandal ¹, Pankaj Kr. Roy ¹, Asis Mazumdar ¹

Affiliations
1 Law and Management, Jadavpur University, Kolkata, West Bengal, IN

Abstract

Since the British period the Damodar River has been the main source of water supply in Raniganj, Asansol and Durgapur area of West Bengal State in India. Afterwards since nineties, the drinking water demand was increasing rapidly with the population rise. There has been a considerable scarcity in water supply especially in summer months. Recently, to augment the water supply situation, considering future demand and population rise, a hydro-geological study has been carried out during dry period at different locations on the river bed. The observation were undertaken in and around the existing pumping area on Damodar river located in the southern part of Raniganj. This research is aimed at assessing the yield test at exploratory bored wells to find out the minimum quantity of water available to design radial collector wells at three different locations with respect to their drawdown, transmissibility and storativity. Secondly, a field method for the mechanical analysis of bore well log material of the study area was attained to determine the material size and the required artificial gravel packing. On the basis of the field study and investigations, data collection, collasion and analysis, this paper has been prepared highlighting the characteristics of the aquifer, the location of the intake wells and yield of the bed.

Keywords

Damodar River, Aquifer, Bore Well, Yield Test, Drawdown, Transmissibility, Storativity, Sieve Analysis.

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Subhasish Das ¹, Pankaj Kumar Roy ¹, Asis Mazumdar ¹

Affiliations
1 School of Water Resources Engineering, Jadavpur University, Kolkata, West Bengal, IN

Abstract

Management measure for Irrigation water by tidal back-water influx is an important issue for the sustainable living of rural communities in the areas where the rainfall is insufficient for rabi crop cultivation. Tidal back-water influx is one of the sources of irrigation water in the lower gangetic planes of West Bengal, India. Based on that concept, a plan is provided for the Magrahat basin of South 24 Parganas district in West Bengal for the augmentation of irrigation facilities through excess amount of tidal back-water entry during the post-monsoon period when the salinity of water is considerably low. In the present study, twenty major canals or khals of Magarahat basin are considered. Volume of available tidal water for irrigation of rabi crops was determined from the gauge data of tidal rivers. Here an attempt has been made to delineate not only the enhancement of the economic return of the people of the Magrahat basin but also to create provision for multi-cropping (rabi crops) pattern of agriculture/horticulture facilities during the dry season for sustaining of their livelihood. Also the tidal backwater surface profiles have been suggested for all the major canals of Magrahat basin using standard step method of gradually varied flow.

Keywords

Water Availability, Tidal Back-Water Influx, Gradually Varied Flow, Water Requirement of Crop, Water Distribution Management.

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