The Community-Level Socio-Economic Impact of a PFI-Based Small Hydropower Plant Construction Project

Author(s):  
Yaeko Mitsumori
Author(s):  
Syed Mohsin Raza Naqvi ◽  
Ashfaq Ahmad Maann ◽  
Izhar Ahmad Khan ◽  
Syed Asif Ali Naqvi ◽  
R. M. Amir

Processes ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 266
Author(s):  
Md Rakibuzzaman ◽  
Sang-Ho Suh ◽  
Hyoung-Ho Kim ◽  
Youngtae Ryu ◽  
Kyung Yup Kim

Discharge water from fish farms is a clean, renewable, and abundant energy source that has been used to obtain renewable energy via small hydropower plants. Small hydropower plants may be installed at offshore fish farms where suitable water is obtained throughout the year. It is necessary to meet the challenges of developing small hydropower systems, including sustainability and turbine efficiency. The main objective of this study was to investigate the possibility of constructing a small hydropower plant and develop 100 kW class propeller-type turbines in a fish farm with a permanent magnet synchronous generator (PMSG). The turbine was optimized using a computer simulation, and an experiment was conducted to obtain performance data. Simulation results were then validated with experimental results. Results revealed that streamlining the designed shape of the guide vane reduced the flow separation and improved the efficiency of the turbine. Optimizing the shape of the runner vane decreased the flow rate, reducing the water power and increasing the efficiency by about 5.57%. Also, results revealed that tubular or cross-flow turbines could be suitable for use in fish farm power plants, and the generator used should be waterproofed to avoid exposure to seawater.


2021 ◽  
pp. 001946622110238
Author(s):  
Kashif Mansoor ◽  
Faraz Khan

The effects of nationwide lockdown were disproportionate on informal workers. Based on a primary household survey conducted among Muslim casual labour working in Aligarh lock industries, we add to studies on the socio-economic impact of the lockdown. We find 44% reduction in employment rate and fall in daily wage for 60% of workers, in the post-lockdown period. A net job loss of 20% was found. The incidence of violation with the minimum wages is severe in the lock industries, and this has increased tremendously as high as 90% for some workers, in the post-lockdown. Muslim women were affected more than men, in terms of unemployment and wages. With little to no savings, the income loss during the lockdown has led to a rise in indebtedness with one-third of households incurring debt Rs. 5,000–10,000. More than 90% of them were found unable to pay rent and electricity bills. Protecting livelihoods and dignity of workers is a constitutional duty of the state. This has become even more demanding now. JEL Codes: E21, E24, E26


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