Results 41 to 50 of about 69,897 (260)
Applied Sciences, 2019 Complete characteristic curves of a pump turbine are fundamental for improving the modeling accuracy of the pump turbine in a pump turbine governing system.
Chu Zhang +4 more
doaj +1 more source
Auxiliary titanium sublimation pump produces ultrahigh /10 to the minus 11 torr/ vacuum [PDF]
, 1966 Sublimated titanium as a gettering agent in conjunction with a turbine-type pump provides a two-step procedure for obtaining an ultrahigh vacuum of 10 to the minus 11 torr. The pump alone evacuates the chamber to a pressure of 10 to the minus 9 torr. The
Outlaw, R. A.
core +1 more source
Experimental investigation of a cascaded organic Rankine cycle plant for the utilization of waste heat at high and low temperature levels [PDF]
, 2020 A power plant with two cascaded organic Rankine cycles (CORC) to exploit waste heat from a 800 kWe combined heat and power plant, fueled by biogas, is designed and tested.
Heim, André +4 more
core +1 more source
Biotechnology and Bioengineering, EarlyView.ABSTRACT In light of climate change and growing resource scarcity, microbial production of organic acids offers a sustainable alternative to fossil‐based chemical synthesis. In this study, malic acid production by Aspergillus oryzae was optimized through cultivation temperature adjustment and biotin supplementation, while organic acid formation from ...
Lukas Hartmann +6 more
wiley +1 more source
Cooling system for high speed aircraft [PDF]
, 1981 The system eliminates the necessity of shielding an aircraft airframe constructed of material such as aluminum. Cooling is accomplished by passing a coolant through the aircraft airframe, the coolant acting as a carrier to remove heat from the airframe ...
Lawing, P. L., Pagel, L. L.
core +1 more source
Raman Spectroscopy–Based Glucose Feed Control Automates Malic Acid Fermentation
Biotechnology and Bioengineering, EarlyView.Raman spectroscopy enables automated, closed‐loop glucose feeding for malic acid production with Ustilago trichophora. Online PLS regression of glucose and malic acid provides input for PID control to maintain 20 g/L glucose. The feed is dynamically adjusted and stopped in response to metabolic demand and product inhibition, demonstrating practical ...
Luca Antonia Grebe +8 more
wiley +1 more source
Structural characteristics analysis of extra–high–head pump–turbine-unit under extreme-pressure working-conditions [PDF]
E3S Web of ConferencesDuring transient processes in extra–high–head pumped–storage power plants, the prototype pump–turbine-units must be able to withstand sudden changes in water pressure within the delivery system.
Huang Xiaoying +5 more
doaj +1 more source
Business Strategy and the Environment, EarlyView.ABSTRACT The present study applied the diffusion of innovation theory to investigate the rate of diffusion of renewable energy sources used by Europe's top professional football stadiums and the relationship with carbon neutrality. A discrete diffusion model estimated the diffusion of renewable energy to saturation, and a multivariate logistic ...
Chad S. Seifried +2 more
wiley +1 more source
Fluid thrust control system [PDF]
, 1968 A pure fluid thrust control system is described for a pump-fed, regeneratively cooled liquid propellant rocket engine. A proportional fluid amplifier and a bistable fluid amplifier control overshoot in the starting of the engine and take it to a ...
Howell, W. L. +2 more
core +1 more source
Dynamic control strategy of a distillation system for a composition-adjustable organic Rankine cycle [PDF]
, 2017 Using zeotropic mixtures as working fluids can improve the thermal efficiency of Organic Rankine cycle (ORC) power plants for utilising geothermal energy.
Collings, Peter, Wang, Enhua, Yu, Zhibin
core +1 more source