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 article, an organic rankine cycle for diesel engine waste heat recovery is modeled and optimized, and the fast and elitist NSGA-II (Nondominated Sorting Genetic Algorithm) is applied to maximize the thermal efficiency and minimize the total annual cost simultaneously.
106 citations
TL;DR: In this article, the effect of iso-butanol addition to diesel fuel on engine performance parameters has been experimentally investigated and the results indicate that up to 30% isobutanol in fuel blends are better than that of 40%.
Abstract: The effect of iso‐butanol addition to diesel fuel on engine performance parameters has been experimentally investigated. The used engine was a single cylinder four stroke CI engine Type Lister 1–8. The tests were performed at engine speed that ranges from 375 to 625 with an increment of 42 rpm at different loads and with 10, 20, 30 and 40% v/v iso‐butanol‐diesel fuel blends. The overall engine performance parameters measured included air‐fuel ratio (AFR), exhaust gas temperature, brake power (Bp ), brake specific fuel consumption (bsfc) and brake thermal efficiency (η th ). The experimental results show that AFR, exhaust gas temperature, (Bp ) and (ηbth ) decreased and bsfc increased with iso‐butanol addition compared to net diesel fuel. Also, the obtained results indicate that the engine performance parameters when using up to 30% iso‐butanol in fuel blends are better than that of 40%.
106 citations
TL;DR: In this article, the authors compared the performance of RCCI and blended combustion modes in a single-cylinder engine and found that the latter is more sensitive to n-butanol ratio and EGR rate.
106 citations
TL;DR: In this article, a biofuel process chain based on fast pyrolysis of hybrid poplar and subsequent hydroupgrading of the obtained bio-oil is simulated using Aspen Plus®.
106 citations
TL;DR: In this article, a high-temperature direct-contact thermal energy storage element for use in a system for storage and retrieval of thermal energy in the range of about 400° to about 3000° F.
105 citations