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 numerical investigation has been performed on the engine characteristics of a compression ignition (C.I.) engine using D100 (diesel) and AB100 (Algae-biodiesel) as fuels at various compression ratios (16.5-18.5).
88 citations
TL;DR: In this article, an analysis of thermodynamic constraints shows that the low concentration of carbon dioxide in ambient air does not pose stringent limits on air capture economics and that the thermodynamic energy requirement is small even using an irreversible sorbent-based process.
88 citations
TL;DR: In this article, the authors studied a long-term solar thermal energy storage based on water absorption by a lithium bromide aqueous solution, and the analysis of simulations made for a low-consumption building in Chambery shows that the solution flow rate is a critical parameter in the process performance.
88 citations
TL;DR: In this paper, an experimental study of a 3kW organic Rankine cycle (ORC) system using an open-drive scroll type expander and R245fa has been investigated.
88 citations
TL;DR: In this article, a three-cylinder SI Daihatsu engine with piston crowns coated with a layer of ceramic, which consisted of yttria-stabilized zirconia (YSZ), was evaluated.
Abstract: While there have been numerous research papers in recent years describing the theoretical benefits obtained from the use of ceramic components in reciprocating engines, the amount of literature that describes practical results is very limited. Although successes have been reported and ceramic components are now in service in production engines, mainly for reduced in-cylinder heat rejection, many researchers have experienced failures or a drop in engine performance. This article presents the work completed on a low heat rejection engine. Extensive experiments were conducted on a three-cylinder SI Daihatsu engine with piston crowns coated with a layer of ceramic, which consisted of yttria-stabilized zirconia (YSZ). Measurement and comparison of engine performance, in particular fuel consumption, were made before and after the application of YSZ coatings deposited onto the piston crowns. The details of the cylinder pressures during the combustion process were also investigated.
88 citations