Power recovery from data line in avionic applications

Author(s):  
Jinying Zhang ◽  
Saeid Hashemi ◽  
Masood Karimian ◽  
Zied Koubaa ◽  
Mohamad Sawan
Keyword(s):  
2020 ◽  
Vol 35 (10) ◽  
pp. 1036-1043
Author(s):  
Chen LIN ◽  
◽  
Yu-chun FENG ◽  
Xi CHEN ◽  
Gui-quan TANG ◽  
...  
Keyword(s):  

Author(s):  
Hee-Won Jang ◽  
Hyun-Sik Kim ◽  
Seong-Ho Ham

Author(s):  
I K Smith

The world market for systems for power recovery from low-grade heat sources is of the order of £1 billion per annum. Many of these sources are hot liquids or gases from which conventional power systems convert less than 2.5 per cent of the available heat into useful power when the fluid is initially at a temperature of 100° C rising to 8–9 per cent at an initial temperature of 200°C. Consideration of the maximum work recoverable from such single-phase heat sources leads to the concept of an ideal trilateral cycle as the optimum means of power recovery. The trilateral flash cycle (TFC) system is one means of approaching this ideal which involves liquid heating only and two-phase expansion of vapour. Previous work related to this is reviewed and details of analytical studies are given which compare such a system with various types of simple Rankine cycle. It is shown that provided two-phase expanders can be made to attain adiabatic efficiencies of more than 75 per cent, the TFC system can produce outputs of up to 80 per cent more than simple Rankine cycle systems in the recovery of power from hot liquid streams in the 100–200°C temperature range. The estimated cost per unit net output is approximately equal to that of Rankine cycle systems. The preferred working fluids for TFC power plants are light hydrocarbons.


Water ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 1194 ◽  
Author(s):  
Marco Sinagra ◽  
Costanza Aricò ◽  
Tullio Tucciarelli ◽  
Pietro Amato ◽  
Michele Fiorino

Although many devices have recently been proposed for pressure regulation and energy harvesting in water distribution and transport networks, very few applications are still documented in the scientific literature. A new in-line Banki turbine with positive outflow pressure and a mobile regulating flap, named Power Recovery System (PRS), was installed and tested in a real water transport network for the regulation of pressure and flow rate. The PRS turbine was directly connected to a 55 kW asynchronous generator with variable rotational velocity, and coupled to an inverter. The start-up tests showed how automatic adjustment of the flap position and the runner velocity variation are able to change the characteristic curve of the PRS according to the flow delivered by the water manager or to the pressure set-point assigned downstream or upstream of the system, maintaining good efficiency values in hydropower production.


Author(s):  
Shawn Rodgers ◽  
Paul Nelson ◽  
Coral Betancourt ◽  
Ernie Kee ◽  
Fatma Yilmaz

The solution to a Markov chain modeling electric power supply to critical equipment in a typical 4-loop pressurized water reactor following a Loss of offsite power event is compared with a convolution method. The standard “convolution integral” approach is described, and an alternative methodology based on a Markov model is illustrated.


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