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 performance of a hybrid photovoltaic/thermal (PVT) solar collector with graphite was evaluated by the thermal efficiency, electrical efficiency and primary energy saving efficiency.
98 citations
TL;DR: In this paper, an organic rankine cycle (ORCRC) was added to the S-CO2 cycle for heat recovery, which could effectively recover the residual heat of the topping cycle and increase the system thermal efficiency.
98 citations
TL;DR: In this article, a nanolubricant is formulated using graphene nanoflakes and engine oil meeting API 20W50 SN/CF and API 20 W50 SJ/CF specifications.
98 citations
TL;DR: In this article, a self-sustainable hybrid photovoltaic thermal (PV/T)-integrated-active solar still has been designed and tested for composite climate at I.I.T.
Abstract: SUMMARY In this paper a new self-sustainable hybrid photovoltaic thermal (PV/T)-integrated-active solar still has been designed and tested for composite climate at I.I.T. New Delhi (28832 0 N; 77812 0 E). The PV system is used to generate electricity to run the pump (60 W and 18 V) as well as thermal energy to heat the water in the collector. The proposed design of hybrid-active solar still can be used at any remote location because of its self-sustainability. The experiments were performed on the set-up for different water depths and for different running duration of the pump. It has been observed that the hybrid-active solar still gives a higher yield (more than 3.5 times) than the passive solar still. It has also been observed that the daily distillate yield and thermal efficiency of the hybrid-active solar still remain almost the same for all water depths in the basin by reducing the daily running period of the pump from 9 to 5 h. This running period of the pump reduced saves 43% of the power used to run the pump with 9 h running, without affecting the performance of the solar still. This work also deals with exergy analysis of the system. Copyright # 2008 John Wiley & Sons, Ltd.
97 citations
TL;DR: In this paper, the authors used both a 3D computational model and engine experiments to explore the effect of the oxygen concentration and intake temperature on RCCI combustion efficiency at light load.
97 citations