Forces acting on conical diffusers and their relation to integral performance parameters

Background: Energy Efficient wireless routing has been an area of research particularly to mitigate challenges surrounding performance in category of Wireless Networks. Objectives: The Opportunistic Routing (OR) technique was explored in recent times and exhibits benefits over many existing protocols and can significantly reduce energy consumption during data communication with very limited compromise on performance. Methods : Using broadcasting nature of the wireless medium, OR practices to discourse two foremost issues of variable link quality and unpredictable node agility in constrained WSNs. OR has a potential to reduce delay in order to increase the consistency of data delivery in network. Results : Various OR based routing protocols have shown varying performances. In this paper, a detailed conceptual and experimental analysis is carried out on different protocols that uses OR technique for providing more clear and definitive view on performance parameters like Message Success Rate, Packet Delivery Ratio and Energy Consumption.

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Power Test System Development and Dynamic Performance State Estimation Based on Hub Motor Vehicle

Recent Patents on Mechanical Engineering ◽

10.2174/2212797613666200131143626 ◽

2020 ◽

Vol 13 (2) ◽

pp. 126-140

Author(s):

Jing Gan ◽

Xiaobin Fan ◽

Zeng Song ◽

Mingyue Zhang ◽

Bin Zhao

Keyword(s):

Real Time ◽

Dynamic Performance ◽

Test System ◽

Operating Conditions ◽

Motor Vehicles ◽

Maximum Speed ◽

Performance Parameters ◽

Power Performance ◽

Power Test ◽

The Real

Background: The power performance of an electric vehicle is the basic parameter. Traditional test equipment, such as the expensive chassis dynamometer, not only increases the cost of testing but also makes it impossible to measure all the performance parameters of an electric vehicle. Objective: A set of convenient, efficient and sensitive power measurement system for electric vehicles is developed to obtain the real-time power changes of hub-motor vehicles under various operating conditions, and the dynamic performance parameters of hub-motor vehicles are obtained through the system. Methods: Firstly, a set of on-board power test system is developed by using virtual instrument (Lab- VIEW). This test system can obtain the power changes of hub-motor vehicles under various operating conditions in real-time and save data in real-time. Then, the driving resistance of hub-motor vehicles is analyzed, and the power performance of hub-motor vehicles is studied in depth. The power testing system is proposed to test the input power of both ends of the driving motor, and the chassis dynamometer is combined to test so that the output efficiency of the driving motor can be easily obtained without disassembly. Finally, this method is used to carry out the road test and obtain the vehicle dynamic performance parameters. Results: The real-time current, voltage and power, maximum power, acceleration time and maximum speed of the vehicle can be obtained accurately by using the power test system in the real road experiment. Conclusion: The maximum power required by the two motors reaches about 9KW, and it takes about 20 seconds to reach the maximum speed. The total power required to maintain the maximum speed is about 7.8kw, and the maximum speed is 62km/h. In this article, various patents have been discussed.

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Efficient Performance Parameters for Solar Cells

Fundamentals of Solar Cell Design ◽

10.1002/9781119725022.ch8 ◽

2021 ◽

pp. 217-245

Author(s):

Figen Balo ◽

Lutfu S. Sua

Keyword(s):

Solar Cells ◽

Performance Parameters ◽

Efficient Performance

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An analytical approach to study performance parameters of 1-3 piezoelectric composite

10.1063/5.0039468 ◽

2021 ◽

Author(s):

Sanjeev Kumar Singh ◽

S. K. Panda

Keyword(s):

Analytical Approach ◽

Piezoelectric Composite ◽

Performance Parameters ◽

Study Performance

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Prognostic Assessment of the Performance Parameters for the Industrial Diesel Engines Operated with Microalgae Oil

Sustainability ◽

10.3390/su13116482 ◽

2021 ◽

Vol 13 (11) ◽

pp. 6482

Author(s):

Sergejus Lebedevas ◽

Laurencas Raslavičius

Keyword(s):

Energy Efficiency ◽

Diesel Engine ◽

High Speed ◽

Performance Parameters ◽

Prognostic Assessment ◽

High Speed Diesel ◽

Microalgae Oil ◽

The Difference ◽

Smoke Opacity ◽

Efficiency Indicators

A study conducted on the high-speed diesel engine (bore/stroke: 79.5/95.5 mm; 66 kW) running with microalgae oil (MAO100) and diesel fuel (D100) showed that, based on Wibe parameters (m and φz), the difference in numerical values of combustion characteristics was ~10% and, in turn, resulted in close energy efficiency indicators (ηi) for both fuels and the possibility to enhance the NOx-smoke opacity trade-off. A comparative analysis by mathematical modeling of energy and traction characteristics for the universal multi-purpose diesel engine CAT 3512B HB-SC (1200 kW, 1800 min−1) confirmed the earlier assumption: at the regimes of external speed characteristics, the difference in Pme and ηi for MAO100 and D100 did not exceeded 0.7–2.0% and 2–4%, respectively. With the refinement and development of the interim concept, the model led to the prognostic evaluation of the suitability of MAO100 as fuel for the FPT Industrial Cursor 13 engine (353 kW, 6-cylinders, common-rail) family. For the selected value of the indicated efficiency ηi = 0.48–0.49, two different combinations of φz and m parameters (φz = 60–70 degCA, m = 0.5 and φz = 60 degCA, m = 1) may be practically realized to achieve the desirable level of maximum combustion pressure Pmax = 130–150 bar (at α~2.0). When switching from diesel to MAO100, it is expected that the ηi will drop by 2–3%, however, an existing reserve in Pmax that comprises 5–7% will open up room for further optimization of energy efficiency and emission indicators.

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