The thermodynamic efficiency
of the combustion cell [[eta].sub.FC] can be determined as the ratio between the net output power [W.sub.gross] and the rate of hydrogen usage [m.sub.H2] in accordance with the following relationship :
LCCP analyses can be a great tool, but the author would like to point out inconsistencies with some recently published articles on the benefits thermodynamic efficiency
of refrigerants, like R-32 (Daikin Industries, 2011).
van den Broeck, "Thermodynamic efficiency
at maximum power," Physical Review Letters, vol.
The authors don't say, however, exactly what policy measures besides R&D investments they would recommend, nor do they elaborate on why folks other than engineers should care about thermodynamic efficiency
. Implicit in their discussion, however, is the potential for new energy-conversion technologies to dramatically reduce the rate of natural resource depletion and move us toward a zero-carbon economy based on renewable energy sources.
So, the proposed new coal plant needs to achieve at least 79% thermodynamic efficiency
to meet the new rule.
The lengthy opening chapter of this volume analyzes the thermodynamic efficiency
of alternative refrigerating and air conditioning systems based on solar absorption technology, and describes the design of a pilot plant in Odessa.
This technology enables improved fuel economy thanks to higher thermodynamic efficiency
, which in turns leads to lower exhaust emissions.
The engine's innovative injection procedure makes for much better fuel and thermodynamic efficiency
than the wall-guided combustion process previously employed with direct injection.
Low-lift savings are achieved through two distinct mechanisms: improved transport efficiency and improved thermodynamic efficiency
. Thermodynamic efficiency
is mainly a function of condensing and evaporating temperatures, determined in turn by condenser and evaporator approach temperatures and source ([T.sub.z]) and sink ([T.sub.x]) temperatures.