Waste Energy Recovery Through Turbo Generation: “Unexpected Fuel Efficiency Sweet Spot for Transient Control.”

2018 ◽  
Author(s):  
Shima Nazari ◽  
Rani Kiwan ◽  
Jason Siegel ◽  
Anna Stefanopoulou
Keyword(s):  
Energy Recovery ◽  
Fuel Efficiency ◽  
Sweet Spot ◽  
Transient Control ◽  
Waste Energy

scholarly journals Waste energy recovery simplify assessment

2021 ◽  
Vol 1037 (1) ◽  
pp. 012043
Author(s):  
L Knapčíková ◽  
R Hricová ◽  
I Pandová ◽  
J Pitel’
Keyword(s):  
Energy Recovery ◽  
Waste Energy

Automobile based heat energy recovery systems

2021 ◽  
pp. 11-23
Author(s):  
Om Prakash ◽  
Ishan Kashyap ◽  
Ayush Kumar ◽  
Bharath Bhushan ◽  
Anil Kumar ◽  
...  
Keyword(s):  
Electric Vehicles ◽  
Energy Recovery ◽  
Fossil Fuel ◽  
Electrical Energy ◽  
Heat Energy ◽  
World Energy ◽  
Waste Energy ◽  
Heat Energy Recovery ◽  
Further Development ◽  
State Of Art

In today's world, energy-saving and waste energy recovery are an important aspect, and it is more critical in the automotive sector. This is mainly due to vehicles are running on fossil fuel. This paper presents review on state of art waste energy recovery systems for automobiles. With further development, this system has the potential in deployment in many other industries. This technology can also be used to store electrical energy which will further be helpful in both hybrid and electric vehicles.

Numerical and experimental investigation of exhaust manifold configurations of turbo-charged diesel engines

2020 ◽  
pp. 095765092097030
Author(s):  
Sheng Liu ◽  
Weilin Zhuge ◽  
Yangjun Zhang
Keyword(s):  
Flow Field ◽  
Pipe Flow ◽  
Energy Recovery ◽  
Fuel Efficiency ◽  
Branch Pipe ◽  
Exhaust Gas ◽  
Available Energy ◽  
Pulse Converter ◽  
Flow Loss ◽  
Exhaust Energy

The exhaust energy recovery is significant for engine fuel efficiency. However, the exhaust gas interference and the loss of flow affect the utilization of exhaust energy of multi cylinder turbocharged diesel engine seriously. In this paper, through Particle Image Velocimetry experiment and computational fluid dynamics simulation of exhaust T-junction flow field, the characteristics of junction local flow field and the law of energy loss are obtained. Based on the one dimensional simulation of engine working process, the exhaust available energy analysis is carried out, and the transmission of available energy of exhaust valve and various pipe systems under typical operating conditions is obtained. On this basis, five exhaust systems are designed, and the steady-state and transient performances are compared by bench tests. The results show that the shrinkage rate and the intersection angle of T-junction are the key factors affecting exhaust energy transmission and exhaust gas interference suppression. Reducing the branch pipe shrinkage rate leads to an increase in branch pipe flow loss, but it will also reduce the main pipe flow loss and exhaust gas interference. Reducing the angle between the main pipe and branch pipe is beneficial to the exhaust flow and exhaust energy recovery. The pulse converter exhaust system has a high exhaust available energy transmission rate; the Modular Pulse Converter system has superior fuel efficiency and transient response performance from the perspective of the entire engine operation range. The 90% response time difference between the five studied exhaust systems is about 0.41 s.

scholarly journals Possibilities of using energy recovery in underground mines

2018 ◽  
Vol 29 ◽  
pp. 00012
Author(s):  
Dariusz Obracaj ◽  
Sebastian Sas
Keyword(s):  
Energy Recovery ◽  
Underground Mines ◽  
Energy Structure ◽  
Waste Energy ◽  
Many Sources ◽  
Recoverable Energy

In underground mines, there are many sources of energy that are often irrecoverably lost and which could be used in the energy structure of a mine. Methane contained in the ventilation air, the water from the dewatering of the mines and the exhaust air from the mine shafts are the most important sources of energy available to a mine. Among other sources of energy available in a mine, you can also distinguish waste energy from the process of the desalination of water or energy from the waste. The report reviewed the sources of energy available in a mine, assessed the amount of recoverable energy and indicated the potential for its use.

A Control Oriented SI and HCCI Hybrid Combustion Model for Internal Combustion Engines

2010 ◽  
Author(s):  
Xiaojian Yang ◽  
Guoming G. Zhu ◽  
Zongxuan Sun
Keyword(s):  
Steady State ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Fuel Efficiency ◽  
Combustion Process ◽  
Internal Combustion ◽  
Mean Value ◽  
Combustion Model ◽  
Zone Model ◽  
Transient Control

The combustion mode transition between SI (spark ignited) and HCCI (Homogeneously Charged Compression Ignition) of an IC (Internal Combustion) engine is challenge due to the thermo inertia of residue gas; and model-based control becomes a necessity. This paper presents a control oriented two-zone model to describe the hybrid combustion that starts with SI combustion and ends with HCCI combustion. The gas respiration dynamics were modeled using mean-value approach and the combustion process was modeled using crank resolved method. The developed model was validated in an HIL (Hardware-In-the-Loop) simulation environment for both steady-state and transient operations in SI, HCCI, and SI-HCCI hybrid combustion modes through the exhaust valve timing control (recompression). Furthermore, cooled external EGR (exhaust gas re-circulation) was used to suppress engine knock and enhance the fuel efficiency. The simulation results also illustrates that the transient control parameters of hybrid combustion is quite different from these in steady state operation, indicating the need of a control oriented SI-HCCI hybrid combustion model for transient combustion control.

On-line COP estimation for waste energy recovery heat transformer by water purification process

Desalination ◽  
2008 ◽  
Vol 222 (1-3) ◽  
pp. 666-672 ◽  
Author(s):  
R.F. Escobar ◽  
D. Juárez ◽  
J. Siqueiros ◽  
C. Irles ◽  
J.A. Hernández
Keyword(s):  
Water Purification ◽  
Energy Recovery ◽  
Purification Process ◽  
Waste Energy ◽  
On Line ◽  
Heat Transformer

scholarly journals Zero Waste; Energy Recovery From Non-recyclable Mixed Municipal Waste

2016 ◽  
Vol 64 (1) ◽  
pp. 99-108 ◽  
Author(s):  
Igor Laštůvka ◽  
Tomáš Vítěz ◽  
Jan Chovanec ◽  
Jan Mareček
Keyword(s):  
Waste Management ◽  
Energy Recovery ◽  
Zero Waste ◽  
Production And Consumption ◽  
Sustainable Utilisation ◽  
Waste Energy ◽  
Term Basis ◽  
Waste Separation ◽  
The Individual ◽  
Secondary Materials

Zero Waste is a strategy offering waste management solutions for today’s businesses. The Zero Waste strategy has been created with the objective of stimulating sustainable utilisation of resources, production and consumption with the highest possible level of recycling of generated waste. Due to the fact that currently there is very little information and only few relevant data available as a base for the implementation of the Zero Waste strategy, waste management specialists approach and apply such a strategy in different manners. On the other hand, there are areas of waste management where such a strategy has already been applied on a long-term basis in spite of non-existing relevant legislative tools. Indicators determined in the Zero Waste strategy may be achieved only if the individual countries clearly define legislative environment and adopt a national Zero Waste strategy with achievable objectives unambiguously determined. The area of waste separation, or handling of fractions of waste non-utilisable as secondary materials after separation, is one of the areas directly connected to the Zero Waste strategy. The objective of this paper is the evaluation of the usage of fractions of waste non-utilisable as secondary materials for energy recovery, providing thus valuable knowledge and information for the implementation of the Zero Waste strategy.

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