Results 81 to 90 of about 63,583 (308)
Ingeniería Mecánica, 2011 El objetivo de este estudio es determinar el efecto de las irreversibilidades (internas y externas)debidas a la transferencia de calor y las pérdidas de presión debidas a la fricción sobre elrendimiento de Segunda Ley de un motor Stirling de tipo ...
Juan José González-Bayón +2 more
doaj
Holodilʹnaâ Tehnika i Tehnologiâ, 2017 Progress on advancing technology of using liquid nitrogen for the non-polluting automobiles is reported. It is shown that the low exergy efficiency of the known engines fueled with liquid nitrogen has discredited the very idea of a cryomobile. The design
M.B. Kravchenko
doaj +1 more source
Microscale Regenerative Heat Exchanger [PDF]
The device described herein is designed primarily for use as a regenerative heat exchanger in a miniature Stirling engine or Stirling-cycle heat pump. A regenerative heat exchanger (sometimes called, simply, a "regenerator" in the Stirling-engine art) is
Moran, Matthew E. +2 more
core +1 more source
, 2009 Cílem této práce je seznámení s termodynamickými ději Stirlingova cyklu a teoretická analýza podle Gustava Schmidta. V první části je uveden princip Stirlingova cyklu a rozdíl mezi ideálním a skutečným cyklem. V další části je představeno, krok po kroku,
Pospíšil, Jaromír
core
Nodal Analysis of Stirling Cycle Devices [PDF]
, 1978 This paper describes a general-purpose program for the nodal analysis of Stirling-cycle devices or other cyclic regenerative machines, and presents an extensive discussion of results for an illustrative problem. The program employs finite-difference, explicit-forward solutions, and is readily adaptable to various machine topologies.
openaire +1 more source
Child &Family Social Work, EarlyView.Abstract The COVID‐19 pandemic and related restrictions imposed in the UK had a significant impact on social work practice with children and young people. As has been widely reported, practitioners were deprived of multisensory information in their assessments and of opportunities to connect with children.
Heather Ellis, Ariane Critchley
wiley +1 more source
Genetic origins and climate‐induced erosion in economically important Asian walnuts
Conservation Biology, EarlyView.Abstract The global climate is undergoing unprecedented changes, posing significant threats to species persistence. However, the spatiotemporal impacts on genetic diversity remain poorly understood, hindering species conservation and management. Walnuts, generally referred to as Juglans regia and J. sigillata, are economically vital in Asia, but little
Peng‐Zhen Fan +17 more
wiley +1 more source
Development of a refrigeration system for lunar surface and spacecraft applications [PDF]
An evaluation of refrigeration devices suitable for potential lunar surface and spacecraft applications was performed. The following conclusions were reached: (1) the vapor compression system is the best overall refrigeration system for lunar surface and
Copeland, R. J.
core +1 more source
Cristiano of Arabia: Did Ronaldo increase Saudi Pro League attendances?
Contemporary Economic Policy, Volume 43, Issue 2, Page 260-270, April 2025.Abstract In December 2022, Cristiano Ronaldo, five‐time Ballon d’Or winner and the most‐followed person on Instagram, signed for Al‐Nassr in the Kingdom of Saudi Arabia. This marked one of several expensive, recent interventions by the kingdom in global sports markets. We exploit the timing of this event to estimate superstar effects.
Dominik Schreyer, Carl Singleton
wiley +1 more source