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, the authors presented some experimental investigations on dual fuel operation of a 4 cylinder (turbocharged and intercooled) 62.5kW gen-set diesel engine with hydrogen, liquefied petroleum gas (LPG) and mixture of LPG and hydrogen as secondary fuels.
102 citations
TL;DR: In this paper, the authors examined the conversion of heat from a heat source by a single Carnot engine and then by a sequence of Carnot engines and derived the optimum values of the operating temperatures of these engines.
Abstract: The production of work from a heat source with finite heat capacity is discussed. We examine the conversion of heat from such a source first by a single Carnot engine and then by a sequence of Carnot engines. The optimum values of the operating temperatures of these engines are calculated. The work production and efficiency of a sequence with an arbitrary number of engines is derived, and it is shown that the maximum available work can be extracted only when the number of cycles in the sequence becomes infinite. The results illustrate the importance of recovery or bottoming processes in the optimization of work‐producing systems. In addition, the present model illuminates one practical limitation of the Carnot cycle: The Carnot efficiency is only obtainable from a heat source with infinite heat capacity. However, another cycle, somewhat reminiscent of the Otto and Brayton cycles, is derived which will provide the maximum efficiency for a heat source with a finite heat capacity.
102 citations
TL;DR: In this paper, the mass, momentum, and energy equations were solved using the ANSYS Fluent. And the authors compared the performance of pure water and Al2O3-water nanofluid by CFD method.
102 citations
TL;DR: In this paper, the results of the simulations of an organic Rankine cycle combined with a gas turbine in order to convert the gas turbine waste heat into electrical power are presented, and a diathermic oil circuits interposed between these two plants for safety reasons.
101 citations
TL;DR: In this article, a new combined cooling and power system using ammonia-water mixture is proposed to utilizing low grade heat sources, such as industrial waste heat, solar energy and geothermal energy.
101 citations