Irrigation is a potentially effective technology to improve agricultural incomes in Sub-Saharan Africa, and hand powered irrigation pumps have received significant interest and investment as a solution appropriate to small-scale farmers in this context. Despite this interest, there has been...

The rapid expansion of tubewell irrigation for rice production in 1980s Bangladesh led to intense debate on the economic, social and environmental impacts. Dominant concerns included inefficient, uneconomic tubewell operation, and groundwater depletion. Socially, the coinage "waterlordism"...

Generally, most pressure irrigation systems require efficient management of water and energy, particularly in systems installed on golf courses. Golf courses have high water requirements throughout the year because the grass has to be maintained in optimum conditions for adequate play...

In this study, a μ-ORC (micro organic Rankine cycle) generator that produces net positive power from low-grade heat (i.e., temperature below 100 °C) was experimentally demonstrated. First, the basic performance of a 10-Wp μ-ORC prototype with a small originally developed displacement-type...

A thermoacoustic compressor is capable of converting an alternating gas flow to a direct one with a large pumping rate on the basis of the pressure oscillation nature of thermoacoustic engines and the flow rectification effect of check valves. Theoretical calculations are first carried out to...

The overall aim of the present paper is to better understand the evolution of tubewell ownership in the North China Plain, especially focusing on the factors that determine ownership and its effect on production. Based on a random sample of 30 villages in three counties in the Hai River Basin,...

Over 1 year, private swimming pools in Australia will typically consume 1680GWh of electricity, producing 2130kt of CO2. Redesigning a pool's filtration system and using it more efficiently can reduce the energy use, and hence the CO2 production, by a significant amount. This paper describes...

The photovoltaic cells will exhibit long-term degradation if the temperature exceeds a certain limit. Photovoltaic cells are the heart of photovoltaic water pumping systems. In order to utilize PV power and increase photovoltaic water pumping system efficiency, it is necessary to keep PV cell...

ILO pub-WEP pub. Comparison of choice of technology, adaptation and technology transfer by public enterprises and private enterprises in India - based on sample survey of heavy industry (pumps and compressors), pharmaceutical industry and heavy electrical industry firms, compares organization...

ILO pub-WEP pub. Working paper, cost benefit analysis of energy sources for groundwater irrigation in India - considers petroleum and biomass engines, electric motors and rural area electrification, animal traction, handpumps, etc.; considers irrigation potential and its impact on agricultural...

ILO pub-WEP pub. Working paper on socio-economic implications of the use of solar energy technology in the Sahel - discusses feasibility and advantages of flat plate collectors' domestic production and rural area applications; stresses advantage for water heating, distillation and thermal...

ILO pub-WEP pub. Working paper presenting an economic analysis of alternative energy sources for irrigation pumping in Northern India - considers economic and technical aspects of photovoltaic pumping systems, solar energy systems, electric power, dual-fuel and diesel engines, Biogas and wind...