Topic
Thermal efficiency
About: Thermal efficiency is a research topic. Over the lifetime, 20911 publications have been published within this topic receiving 302373 citations. The topic is also known as: thermodynamic efficiency & efficiency.
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TL;DR: In this paper, a free piston, internal combustion (IC) engine, operating at high compression ratio (~30:1) and low equivalence ratio (φ~0.35), has been proposed by Sandia National Laboratories as a means of significantly improving the IC engine's cycle thermal efficiency and exhaust emissions.
Abstract: A free piston, internal combustion (IC) engine, operating at high compression ratio (~30:1) and low equivalence ratio (φ~0.35), and utilizing homogeneous charge compression ignition combustion, has been proposed by Sandia National Laboratories as a means of significantly improving the IC engine’s cycle thermal efficiency and exhaust emissions. A zero-dimensional, thermodynamic model with detailed chemical kinetics, and empirical scavenging, heat transfer, and friction component models has been used to analyze the steady-state operating characteristics of this engine. The cycle simulations using hydrogen as the fuel, have indicated the critical factors affecting the engine’s performance, and suggest the limits of improvement possible relative to conventional IC engine technologies.
136 citations
TL;DR: In this paper, the potential of thermoelectric generator as a power generation system using heat from SGSP was investigated, and two new models of SGSP have been presented as: (1) SGSP using TEG in condenser of ORC without heat exchanger and (2)SGSP using tengenerated ORC with heat exchange.
136 citations
TL;DR: In this article, the authors studied the energy, economic and environmental implications of using complex small scale trigeneration energy conversion systems, starting with the results of an intensive theoretical and experimental research activity, and concluded that these systems, in comparison with conventional system, based on separate energy production, can guarantee a primary energy saving up to 28% and a reduction of equivalent CO 2 emissions up to 36%.
136 citations
TL;DR: In this paper, the authors investigated the combustion and emission characteristics of a port-injection SI turbocharged engine fueled with several H 2 / CNG blend ratios (0-50vol%) under various ignition timings.
136 citations
TL;DR: In this article, the authors reviewed the appropriateness of the Carnot cycle as the ideal model for geothermal binary power plants and showed that the ideal trilateral cycle is more suitable than the traditional triangular cycle.
136 citations