Disaster risk in the urban villages of Delhi

Kumar, B Ajay; Bhaduri, S.

doi:10.1016/j.ijdrr.2018.04.022

Cited by 18 publications

(8 citation statements)

References 2 publications

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“…The city of Delhi (also known as National Capital Territory of Delhi) is placed along the banks of Yamuna River 46,47 . The location of the city lies in the subtropical belt of the Indian sub‐continent at the latitude of 28.38°N and the longitude of 77.17°E, with an elevation of 216 m above the mean sea level 48 .…”

Section: Methodsmentioning

confidence: 99%

“…44,45 The city of Delhi (also known as National Capital Territory of Delhi) is placed along the banks of Yamuna River. 46,47 The location of the city lies in the subtropical belt of the Indian sub-continent at the latitude of 28.38 N and the longitude of 77.17 E, with an elevation of 216 m above the mean sea level. 48 The city of Delhi has a precise tropical climate with extremely hot summers with temperatures getting up to 45 C and extremely cold winters with temperatures falling to 2 C or even less.…”

Section: Research Area-delhi Metropolitan Citymentioning

confidence: 99%

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Techno‐economic assessment and optimization of a standalone residential hybrid energy system for sustainable energy utilization

Kumar

Tewary

2021

Intl J of Energy Research

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Summary Nowadays the whole world is striving to achieve energy security and sustainable development through sustainable utilization of cleaner energy resources. But due to the rapidly rising population caused by the unprecedented urban development, it has created imbalances of energy supply and demand. Hybrid energy systems have emerged as a promising source to augment existing energy infrastructure for sustainable energy supply and to reduce the impact of challenges posed by the energy scarcities. There have been continuous requests from the urban sector for additional energy resources, but the energy generation involves a complex phenomenon. In India also, there are abundances of rising energy demands from various sectors over the regions, and these demands cannot be fulfilled further due to the limitations of the energy generation grids. As a result, an approach is required to offer additional energy resources beyond the use of diesel generator (which increases environmental pollution). Recently due advancement in hybrid energy systems consisting of non‐renewable & renewable or renewable & renewable or non‐renewable & non‐renewable, it provides a scope to understand the various configuration of the hybrid energy system for past trends, present status and future scenarios. The investment in energy technologies is critical to be evaluated with techno‐economic feasibility analysis for resource efficiency optimization. Hence, the main objective of this work is to propose an optimal system configuration for urban residential standalone hybrid energy systems to fulfil the electrical energy requirement, which is technically and economically reliable & feasible. The current work accounts for scaling up the existing energy system with proper implementation. The simulations results show that expected average energy requirements of 5 kWh/day with a peak of 818 W for a typical household can be met with proposed configuration (with components like solar PV, wind turbine, power generator [diesel] and battery backup system). The data simulation and optimization technique for a monthly profile of wind, solar, and excess energy generation over HOMER simulation toolkit offer the potential to generate excess electricity of 19.3%. Techno‐economic assessment of the system shows that the proposed system offers more economical and performance benefits. This study also articulates the need to propose a better energy system structure with basic energy grid extension as a cost‐effective solution for sustainable development. Similar kind of assessment will offer a useful decision support system for tropical countries to guide future researchers in energy studies.

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Section: Methodsmentioning

confidence: 99%

Section: Research Area-delhi Metropolitan Citymentioning

confidence: 99%

Techno‐economic assessment and optimization of a standalone residential hybrid energy system for sustainable energy utilization

Kumar

Tewary

2021

Intl J of Energy Research

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“…Geomorphologically, the study area is part of the Ganga-Yamuna flood plain with Hindon River as the Western boundary. It is a vast flood plain of the River Hindon dissected by its tributaries (Kumar & Bhaduri, 2018;Saleem et al, 2020). Geomorphologically the area can be divided into three main categories including (a) older alluvial plains, (b) older flood plains, and (c) active flood plains.…”

Section: Geological Setupmentioning

confidence: 99%

Analysing Effects on Ground Water Levels Due to Conversion of Rural to Urban Landscapes

Kumar

Veerabhadrappa

2022

Journal of Landscape Ecology

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Greater NOIDA evolved from 1991 with 101 villages to 2020 with 293 villages. This is an ideal case of rural to urban transformation in the immediate past. This transformation led to a decrease in recharging natural surfaces and an increase in impermeable surfaces. Along with the reduction in recharge areas, an increase in population has necessitated more and more extraction of groundwater resulting in an imbalance of water extraction and recharge. The result is depletion of groundwater levels in this area. The area is part of the wide Indo-Gangetic alluvium with sand, silt and clay layers resting on quartzite’s of Delhi Super Group. Geomorphological map prepared using digital elevation models of the area shows older and younger alluvial plains and active flood plains of the river Hindan. Time series analysis of key land use land cover classes shows that recharge areas were reduced from 77 % to 30 % from 2005 to 2019 and impervious surfaces have increased from 19 % to 65 % for the same period. Aquifers of the area are both phreatic and semi-confined. The aquifer parameters estimated through step drawdown test and long duration aquifer performance test indicates that the average coefficient of transmissivity of the area is 1752 m2/day and the average coefficient of storage is 4.84 x 10-4. Discharge of the wells shows a yield of 8 to 16 lps for a drawdown of 3 to 6 m. An attempt has been made to know the behaviour of groundwater levels during the same period as that of land use land cover. The results indicate a 74 % depletion in groundwater levels with an average annual depletion of 21 %. An interrelationship between urban growth and groundwater levels has been established in this study. This analysis indicates that as agriculture declined water levels also depleted and have a positive correlation of 0.852. On the contrary, as the built-up increased water level has depleted hence have a negative relationship with a correlation coefficient of -0.851. To make it a sustainable resource, these overexploited aquifers need careful participatory management by communities, Scientists, and policymakers.

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“…4 and 6, it can be seen that the amplitude of the pulse patterns are different in value. However, the percentage of the delivery to each node is similar in value considering the relation state in equation (5). Therefore, the amplitude of the current pulse at each branch and the amplitude of total current pulses was replaced with the amplitude of water supply rate at each node and the amplitude of water supply from the pulse generator as stated in Fig.…”

Section: = ℎ * 100mentioning

confidence: 99%

“…The disasters range from localized flooding to huge typhoons and earthquakes [1,2,3]. In particular, flood-related disasters are globally widespread, affecting both urban and rural areas [3,4,5,6]. Recent flooding and landslides in Japan in July 2018 killed and displaced many people living in various prefectures around Japan [7].…”

Section: Introductionmentioning

confidence: 99%

Development of logistics library for disaster relief using electric circuit model

Chata

Fernando

Takahashi

et al. 2020

JASSE

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In this study, a logistics network simulator based on the similarity between logistic and electric behaviors was considered. To reduce the complexity of practical electrical circuit development, the developed logistics model was converted to an electrical circuit model for analysis. Basic logistics networks such as centralized, de-centralized, and complex models were simulated using the well-defined electrical circuit models. The results show that theoretical logistical behavior can be simulated using electrical circuit models and converted simulation block models, confirming the similarity between flow of logistics and current distribution in electrical circuit.

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Disaster risk in the urban villages of Delhi

Cited by 18 publications

References 2 publications

Techno‐economic assessment and optimization of a standalone residential hybrid energy system for sustainable energy utilization

Techno‐economic assessment and optimization of a standalone residential hybrid energy system for sustainable energy utilization

Analysing Effects on Ground Water Levels Due to Conversion of Rural to Urban Landscapes

Development of logistics library for disaster relief using electric circuit model

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