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Pumps and Pumping
Published in Subhash Verma, Varinder S. Kanwar, Siby John, Environmental Engineering, 2022
Subhash Verma, Varinder S. Kanwar, Siby John
Pumps are used to add energy to the water in the form of pressure or lift. The head added or total dynamic head (TDH) can be calculated by writing an energy equation for two points such that the pump falls between the two points. Headadded,ha=v222g−v122g+hl+Z2−Z1+p2γ−p1γ
Force-System Resultants and Equilibrium
Published in Richard C. Dorf, The Engineering Handbook, 2018
where TDH is the total dynamic head (the work the pump must do in overcoming lift and losses to move the water), WHP is the water horsepower (the power needed to move the water), and BPH is the brake horsepower (the power that must be available to the pump).
Pumps
Published in Richard Vaillencourt, Simple Solutions to Energy Calculations, 2020
The TDH is the highest pressure that the piping and equipment system will impose on the pump. This is simply a sum of the static head, the friction head and the controlling pressure drop of the various pieces of equipment.
Energy consumption forecasting in agriculture by artificial intelligence and mathematical models
Published in Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2020
Elham Bolandnazar, Abbas Rohani, Morteza Taki
where DE presents direct energy (J ha−1), g is acceleration due to gravity (m s−2), H is total dynamic head (m), Q is volume of required water for one cultivating season (m3 ha−1), γ is density of water (kg m−3), is electrical pump efficiency (reported to be 70–90% in the literature while it was calculated as 44% in the region) and is total power conversion efficiency (18–20%) (Kitani 1999).
Environmental and economic performance of a water distribution system through a lens of life cycle thinking: A case study of the City of Kelowna
Published in Sustainable and Resilient Infrastructure, 2023
Shah N. Khan, Haroon R. Mian, Kasun Hewage, Rehan Sadiq
where P = pump power (kW); Q = flow capacity (m3/h); ρ = density of fluid (1000 kg/m3); ɡ = gravity (9.81 m/s2); h = total dynamic head (m) (Equation. 4); η is the efficiency of the pump obtained from pump curves provided by the manufacturer.
Evaluation of solar powered water pumping system: the case study of three selected Abattoirs in Ibadan, Nigeria
Published in International Journal of Sustainable Engineering, 2018
Temitope Raphael Ayodele, Ayodeji Samson Olatunji Ogunjuyigbe, Omolola Anuoluwa Adeniran
Various pumps have, in their data sheet, specific total dynamic heads, efficiencies and capacities. Pump charts are used to match the estimated total dynamic head () to the best efficiencies possible.