Abstract
Entropy generation along with exergetic analysis is carried out using turbulent nanofluid flow in the heat exchanger. To obtain the optimized percentage constituent of nanofluid, the nanofluid volume concentrations is varied for the given input conditions. For different Reynolds number of the fluid and heat capacity rate ratio between the streams, the heat transfer improvements are studied in terms of nano particles diameter. Parametric analysis is carried out for a counterflow heat exchanger using turbulent nanofluid flow with exergetic efficiency along with entropy generation number as performance parameters. The exergetic efficiency provides realistic approach in the design of nanofluid applications in heat exchanger leading to conservation of energy.
Abstract
This study presents an experimental investigation of conventional and enhanced receiver tube performance for the application of a concentrated parabolic trough collector (CPC). The CPC system is fabricated and tested for the conventional and enhanced receiver tubes. The experiments were performed on both tubes for the change of flow rates. The temperature rise of the tube surface, as well as working fluid, were monitored for varying flow rates. The results were compared and discussed in view of enhanced CPC system performance. The results exhibited that the temperature rise of the working fluid passing through the tube was more in the case of the enhanced tube compared to the conventional receiver tube under the same flow rates.
Key Words
enhanced receiver tube; parabolic trough collector; peripheral temperature variation; surface temperature; temperature rise
Address
Mohammed Al-Harrasi and Afzal Husain: Department of Mechanical and Industrial Engineering, Sultan Qaboos University, Muscat, Oman
M. Zunaid: Department of Mechanical Engineering, Delhi Technological University, Bawana Road, Delhi, India
Abstract
Recent concerns about rising fuel prices and greenhouse gas emissions have focused attention on alternative energy sources, particularly in the transport sector. Transportation consumes 40% of overall fuel usage. As a result, a growing majority of researches on Electric Vehicles (EVs) and their Energy Management Systems (EMS) have been done. In order to enhance the performance and to meet the needs of drivers, more information regarding the EMS is needed. A new Energy Management System is proposed using a FOPID controller. To put the concept into practice, state equations are utilised. The fifth-order state-space model under study is a linked model with several inputs and outputs and the transfer matrices are calculated for decoupling the system. Utilizing these transfer matrices to decouple the system and FOPID controller is used to tune the system. The tuned parameters are minimized using a Particle Swarm Optimization (PSO) approach with Integral Time Absolute Error (ITAE) as the goal. When the suggested FOPID system's results are compared to those of PID-controlled systems, a sizable improvement is observed, which is explained by the results.
Key Words
energy management system; FOPID; PSO
Address
Shujaat Husain and Haroon Ashfaq: Department of Electrical Engineering, Jamia Millia Islamia, New Delhi, 110025, India
Mohammad Asjad: Department of Mechanical Engineering, Jamia Millia Islamia, New Delhi, 110025, India
Abstract
The current study presents experimental research on a parabolic trough collector with tube and cavity receivers. The primary concentrating parabolic reflector is designed for an aperture area of 2x2 m2 with mirror-polished stainless steel sheet reflectors. The cavity receiver consists of a compound parabolic secondary reflector and a copper tube. Both the conventional tube receiver and the cavity receiver tube are coated with black powder. The experiments are carried out to compare the efficiency of the cavity receiver with the tube receiver for fluid temperature rise, thermal efficiency, and overall losses. The experiments showed significantly higher fluid temperature rise and overall efficiency and lower thermal losses for the cavity receiver compared to the tube receiver within the parameters explored in this study.
Key Words
cavity receiver; compound parabola; parabolic trough concentrator; temperature rise; thermal efficiency; thermal losses
Address
Omar Al-Nabhani, Saud Al-Kalbani, Azzam Al-Alawi and Afzal Husain: Department of Mechanical and Industrial Engineering, Sultan Qaboos University, Muscat, Oman
Abstract
Environmental sustainability is critical; else, the whole planet would face climatic disasters in the near future. A transportation system based on electric vehicles is assumed to be capable of providing long-term mobility. However, despite several attempts by national and international authorities, a great aim could not be met in India or the rest of the globe. Existing electric cars have a number of limits and obstacles. This report highlighted significant environmental and safety-related constraints that contribute to the low adoption rate of BEVs in India. A SWOT analysis was also carried out to identify the important elements influencing the future of BEV penetration in India.
Key Words
BEVs; environmental and safety barriers; environmental pollution; safety hazards
Address
Sanjeev Kumar and Amit Pal: Department of Mechanical, Production & Industrial Engineering, Delhi Technological University, Delhi, India
Abstract
The dual-fuel technology, which uses gaseous fuel as the main fuel and liquid as the pilot fuel, is an appealing technology for reducing the exhaust emissions. The current study proposes emission models based on ANFIS for a dual-fuel using producer gas (PG)-diesel engine. Emissions measurements were taken at different engine load levels and fuel injection timings. The proposed model predictions were examined using statistical methods. With R2 values in the range of 0.9903 to 0.9951, the established ANFIS model was found to be consistently robust in predicting emission characteristics. The mean absolute percentage deviate in range 1.9 to 4.6%, and mean squared error varies in range 0.0018 to 13.9%. The evaluation of the ANFIS model developed shows a reliable claim of intrinsic sensitivity, strength, and outstanding generalization. The presented meta-model can be used to simulate the engine's operation in order to create an efficient control tool.
Key Words
alternative fuels; emission; machine learning; renewable energy sustainability
Address
Prabhakar Sharma: School of Engineering Science, Delhi Skill and Entrepreneurship University, Delhi-110042, India
Avdhesh Kr Sharma: Mechanical Engineering Dept., D.C.R. University of Sci. & Technology,
Murthal (Sonepat)-131039, Haryana India
Abstract
This research work focuses to design and simulate a 200W solar power system with electrical power conservation scheme as well as thermal power conservation modeling to improve power extraction from solar power plant. Many researchers have been already designed and developed different methods to extract maximum power while there were very researches are available on improving solar power thermally and mechanically. Thermal parameters are also important while discussing about maximizing power extraction of any power plant. A specific type of coolant which have very high boiling point is proposed to be use at the bottom surface of solar panel to reduce the temperature of panel in summer. A comparison between different maximum power point tracking (MPPT) technique and proposed MPPT technique is performed. Using this proposed Thermo-electrical MPPT (TE-MPPT) with Deep Learning Algorithm model 40% power is conserved as compared to traditional solar power system models.
Key Words
ANFIS based MPPT; Deep learning based MPPT; FLC based MPPT; MPPT techniques; TE-MPPT; thermal effect of solar cell
Address
Raj G. Chauhan, Saurabh K. Rajput and Himmat Singh: Department of Electrical Engineering, Madhav Institute of Technology and Science, Racecourse Rd, near Gola ka Mandir, Mela Ground, Thatipur, Gwalior, Madhya Pradesh 474005, India
