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Encompassing both practical applications and recent research
developments, this book takes the reader from fundamental physics,
through cutting-edge new designs of ejectors for refrigeration. The
authors' unique vision marries successful design, system
optimization, and operation experience with insights on the
application of cutting-edge Computational Fluid Dynamics (CFD)
models. This robust treatment leads the way forward in developing
improved ejector technologies. The book covers ejectors used for
heat powered refrigeration and for expansion work recovery in
compression refrigerators, with special emphasis on two-phase flows
of "natural" fluids within the ejector, i.e. steam and carbon
dioxide. It features worked examples, detailed research results,
and analysis tools.
Encompassing both practical applications and recent research
developments, this book takes the reader from fundamental physics,
through cutting-edge new designs of ejectors for refrigeration. The
authors' unique vision marries successful design, system
optimization, and operation experience with insights on the
application of cutting-edge Computational Fluid Dynamics (CFD)
models. This robust treatment leads the way forward in developing
improved ejector technologies. The book covers ejectors used for
heat powered refrigeration and for expansion work recovery in
compression refrigerators, with special emphasis on two-phase flows
of "natural" fluids within the ejector, i.e. steam and carbon
dioxide. It features worked examples, detailed research results,
and analysis tools.
Natural ventilation in buildings, generally belongings to bio
climatic design, can provide a comfortable indoor climate and major
possibilities for energy saving and reducing energy consumption due
to mechanical ventilation and air conditioning systems. Natural
ventilation is the most efficient passive cooling systems, which
was also used in traditional, historic architecture to improve
thermal efficiency and indoor building comfort. Many historic
buildings in Italy were split between summer and winter apartments.
the summer apartment was located on the ground floor and frescoed.
Its cool indoor climate was due to the presence of surrounding
gardens and to the high thermal inertia of the ground and wall.
Sometimes these rooms benefited from effective natural
air-conditioning systems with air channels, gratings. underground
openings and rooms and basins for rain water storage. Some
architectural structures inside historical buildings are often
interpreted as cooling systems. The problem is the knowledge about
the real functioning of these systems during the past and at the
present.
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