Water Resources in Food and Energy Production

BioScience ◽  
1982 ◽  
Vol 32 (11) ◽  
pp. 861-867 ◽  
Author(s):  
David Pimentel ◽  
Sarah Fast ◽  
Wei Liang Chao ◽  
Ellen Stuart ◽  
Joanne Dintzis ◽  
...  
2013 ◽  
Vol 732-733 ◽  
pp. 7-10
Author(s):  
Jing Long Liang ◽  
Hui Li ◽  
Xiao Ya Geng

Thermal power generation in China as the main energy production, the production process consumes a lot of water resources. It is significant and the overall layout of the development of the national economy and the effective utilization of water resources, for the water consumption of the accurate calculation of thermal power generation process. The value through the site have been extracted, The water consumption of power plant cooling tower unit and the emissions per unit of energy was calculated and analyzed.


Author(s):  

Hydro power potential of Transbaikal Kray small rivers has been considered as a part of the territory water resources that can be used for energy production. It has been shown that Transbaikal Kray territory is characterized by the well-developed river network, more than 98 % of it relate to the small river class. Use of the rivers’ hydro-power resources is hampered due to the absence of their hydro-power potential. This is the first topical article devoted to assessment of theoretical (gross) potential of the Transbaikal Kray small hydro-power industry. A map of runoff module distribution on the Transbaikal Kray territory and data on elevations obtained with Shuttle Radar Topography Mission digital relief model have been used in this study. The “linear accounting” method has been applied to the rivers theoretical hydro-power potential calculation, a map of the Transbaikal Kray small rivers hydro-power theoretical potential distribution has been plotted in accordance with the obtained results. River ranges located in the Stanovoy upland, the adjoining Northern part of the Transbaikalian middle mountains, and the Khentey-Daur upland possess the highest theoretical capacity. The lowest values are typical for South-East regions of the Kray.


Water ◽  
2021 ◽  
Vol 13 (17) ◽  
pp. 2416
Author(s):  
Adegboyega Adeniran ◽  
Katherine A. Daniell ◽  
Jamie Pittock

Water infrastructure development is key to attaining sustainable development, especially for water supply, sanitation and health, agricultural development, and energy production. However, sub-Saharan African countries face specific challenges around infrastructure financing, systemic and repeated malfunctioning, and decentralised infrastructure types. Using Nigeria as a case, this article aims to analyse historical water infrastructure development in Nigeria with a specific focus on dams and standpipes. Seven themes are discussed: infrastructure divisions; deprioritising water supply; political infrastructures; infrastructure failure and sustainability; infrastructure classification and typologies; optimal use of water resources and infrastructure; and a commentary on the future of water infrastructure development. The article concludes with policy and research suggestions for policymakers and other relevant stakeholders.


2014 ◽  
Vol 12 ◽  
pp. 747-752 ◽  
Author(s):  
Satya. P. Bindra ◽  
Abdel Hamid ◽  
Hussein Salem ◽  
Khalifa Hamuda ◽  
Salem Abulifa

Ground Water ◽  
2009 ◽  
Vol 47 (5) ◽  
pp. 611-611 ◽  
Author(s):  
John E. McCray ◽  
Geoffrey D. Thyne

Water ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 769
Author(s):  
Hany F. Abd-Elhamid ◽  
Ashraf Ahmed ◽  
Martina Zeleňáková ◽  
Zuzana Vranayová ◽  
Ismail Fathy

The shortage of water is a major obstruction to the social and economic development of many countries, including Egypt. Therefore, there is an urgent need to properly manage water resources to achieve optimum water use. One way of saving available water resources is to reduce evaporation that leads to the loss of a large amount of water from reservoirs and open lakes. This paper aims to use a floating photovoltaic system (FPVS) to cover a lake’s water surface to reduce evaporation and also for energy production. This methodology was applied to Lake Nasser as one of the largest lakes in the world where much evaporation happens due to its large area, arid environments, and the shallow depths of some parts of the lake. The estimated evaporation from the lake was 12.0 × 109 m3/year. The results show that covering 25%, 50%, 75%, and 100% of the lake can save about 2.1, 4.2, 6.3, 7.0, and 8.4 × 109 m3/year and produce energy of 2.85 × 109, 5.67 × 109, 8.54 × 109, and 11.38 × 109 MWh/year, respectively. Covering areas of shallow water depth was more efficient and economical. The results show that covering 15% of the lake’s area (depths from 0.0 to 3.0 m) can save 2.66 × 109 m3/year and produce 1.7 MWh/year. Covering 25% of the lake’s area (depths from 0.0 to 7.0) can save 3.5 × 109 m3/year and produce 2.854 MWh/year. Using an FPVS to cover parts of Lake Nasser could help manage water resources and energy production for Egypt to overcome the likely shortage of water resources due to population growth. This system could be applied in different locations of the world which could help in increasing water resources and energy production, especially in arid and semi-arid regions.


Water ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 2119
Author(s):  
Eva Contreras ◽  
Javier Herrero ◽  
Louise Crochemore ◽  
Cristina Aguilar ◽  
María José Polo

Run of river (RoR) hydropower systems, despite being one of the most cost-effective and environmentally benign energy technologies, have the disadvantage that production is not constant because it is subject to a high variability in precipitation and snow cover. In addition, the management of RoR plants has to comply with some particular operating conditions, but also with some environmental flow requirements. This work presents the assessment of the main inputs included in a climate service, historical local data and the seasonal forecast of water inflow to RoR plants, which are used to predict the operability and the expected energy production. The analysis is presented through the application in a pilot RoR system located in the south of Spain, in a semi-arid Mediterranean area impacted by snow, where seasonal forecasting is especially challenging. The results show the high interannual variability of the operation in this kind of facilities. The outcomes indicate that seasonal climate forecast information would improve the prediction of observed river streamflow by 7.4% in reliability and 3.2% in sharpness compared to the current operational forecast based on historical data. The climate forecasts thus provide valuable information for the exploitation of available water resources, which generates a significant value for the operation of the plant and the energy production market.


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