WASTE ENERGY HARVESTING USING III-NITRIDE MATERIALS

2017 ◽  
pp. 37-75 ◽  
Author(s):  
E. Ghafari ◽  
E. Witkoske ◽  
Y. Liu ◽  
C. Zhang ◽  
X. Jiang ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Waste Energy

Energy generated through the pyroelectric effect using Macro-fiber Composites

2020 ◽  
pp. 1045389X2095709
Author(s):  
Krystal L Acosta ◽  
W Keats Wilkie ◽  
Daniel J Inman
Keyword(s):  
Energy Harvesting ◽  
Thermal Energy ◽  
Experimental Tests ◽  
Fiber Composites ◽  
Maximum Energy ◽  
Specific Power ◽  
Power Devices ◽  
Pyroelectric Effect ◽  
Waste Energy ◽  
Temperature Rate

Waste energy harvesting is a method of generating small amounts of energy, usually through vibrations or thermal energy. Macro-fiber Composites (MFCs) have been employed in energy harvesting applications utilizing the piezoelectric effect, however, energy harvesting using the pyroelectric effect in MFCs has not been thoroughly explored. This paper takes strides in investigating the energy generated using the pyroelectric effect with P1 and P2 MFCs using two different oscillating temperature rates at 5°C/min and 10°C/min. Numerical temperature data along with analytical temperature functions were used to model the pyroelectric effect and the result was compared to experimental tests. Depending on the size of the MFC, type, resistor used, and the temperature rate, the energy generated varies from 0.4 to 24 µJ for the P1 MFC, and 8 to 459 µJ for the P2 MFC. The maximum specific power was also estimated analytically, numerically, and experimentally. A resistor sweep was performed using the numerical model to calculate the optimal resistance that would provide the most energy. The resistor was in the Gigaohm (GΩ) to Teraohm (TΩ) range for the specified temperature profiles. The required resistance to generate the maximum energy decreased as the temperature rate and the size of the MFC increased. This was validated with experiments conducted at varying resistances. Because this is energy generated from the ambient environment, pyroelectric harvesting can be used to power devices without cost to the source. This form of harvesting can be used in any place where there is a natural thermal cycle (i.e. due to weather or machine giving off thermal energy).

scholarly journals A review study on energy harvesting systems for vehicles

2018 ◽  
Vol 12 (4) ◽  
pp. 251-259 ◽  
Author(s):  
Umut Aksu ◽  
Recep Halicioglu
Keyword(s):  
Energy Source ◽  
Energy Harvesting ◽  
Fossil Fuels ◽  
Fuel Oil ◽  
Automotive Sector ◽  
Slowing Down ◽  
Industrial Sectors ◽  
Harvesting Systems ◽  
Technological Developments ◽  
Waste Energy

The widespread and increasing consumption of fossil-based fuels as an energy source causes a rapid decrease of these natural sources, as well as an increase of pollution in the atmosphere. Fuel oil, one of the products of fossil fuels, is today the commonly used energy source for transportation. The importance of contributing to the fuel economy and of increasing environmental consciousness have necessitated certain measures in the automotive sector, as well as in other industrial sectors. Therefore, the technological developments recently carried out in the automotive sector aim to reduce the consumption of fossil fuels, for example by recovering waste energy in vehicles. In this direction, efforts have been centered upon the development of energy harvesting systems that provide energy recovery from dynamic parts of the vehicles, such as suspensions. Moreover, the regenerative braking systems that recover some amount of kinetic energy of the vehicles slowing down have been developed and have been in use long since. In this study, research studies on providing the recovery of the vehicles’ waste energy are reviewed with their comparisons.

Waste Energy Harvesting

2014 ◽  
Author(s):  
Ling Bing Kong ◽  
Tao Li ◽  
Huey Hoon Hng ◽  
Freddy Boey ◽  
Tianshu Zhang ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Waste Energy

Recent advances in CNT/graphene based thermoelectric polymer nanocomposite: A proficient move towards waste energy harvesting

2016 ◽  
Vol 53 ◽  
pp. 653-671 ◽  
Author(s):  
Abhijit Dey ◽  
Om Prakash Bajpai ◽  
Arun K. Sikder ◽  
Santanu Chattopadhyay ◽  
Md Abdul Shafeeuulla Khan
Keyword(s):  
Energy Harvesting ◽  
Polymer Nanocomposite ◽  
Recent Advances ◽  
Waste Energy

scholarly journals Energy Storage Overflow-Aware Data Delivery Scheme for Energy Harvesting Wireless Sensor Networks

Sensors ◽  
2019 ◽  
Vol 19 (6) ◽  
pp. 1383 ◽  
Author(s):  
Wenwei Lu ◽  
Yi-hua Zhu ◽  
Kaikai Chi
Keyword(s):  
Wireless Sensor Networks ◽  
Energy Storage ◽  
Sensor Networks ◽  
Energy Harvesting ◽  
Source Node ◽  
Wireless Sensor ◽  
Data Delivery ◽  
Limited Capacity ◽  
Waste Energy ◽  
Simulation Results

In Energy-Harvesting Wireless Sensor Networks (EH-WSNs), energy storage with limited capacity is used in the nodes to store the harvested energy. Energy storage overflow (ESO) happens when the energy storage is full, which causes the nodes to be unable to store the newly harvested energy. In traditional data delivery schemes, there is the problem of “energy hungry and surplus coexistence”, meaning that some nodes in the network are hungry for energy while some other nodes continue to waste energy due to ESO. To alleviate this problem, in this paper, we present the ESO-aware multiple path (EAMP) data delivery scheme so that more data can be delivered to the sink. With the EAMP, multiple disjoint paths from the source node to the sink are constructed, and the source node splits data into multiple pieces with each going through one of the paths, which helps in mitigating ESO. Simulation results show that the proposed EAMP scheme can deliver more data than the existing ones.

Dynamic Modeling and Simulation of Waste Energy Harvesting System for Urban Car

2012 ◽  
Vol 576 ◽  
pp. 679-682
Author(s):  
A.R. Fadhilah ◽  
A. Rahman
Keyword(s):  
Energy Harvesting ◽  
Waste Heat ◽  
Passenger Cars ◽  
Harmful Emission ◽  
Engine Efficiency ◽  
Single Cylinder Engine ◽  
Waste Energy ◽  
Turbulence Effect ◽  
Energy Harvesting System ◽  
Short Time

Single cylinder engine is capable of reducing harmful emission to the environment due to reduction in fuel consumption. On the other side, supercharger is known to be able to boost air to substantially improve the fuel economy of passenger cars. However, some amount of power is required by supercharger, thus reducing the efficiency of the engine. For improving the engine efficiency, waste heat energy from coolant is transferred to the boosted air before it flows into the combustion chamber. The system which functions as heat transfer is known as Waste Energy Harvesting System (WEHS). This system has been developed in order to supply enough boosted air for creating massive turbulence effect and auto oxidation to burn 100% of fuel with very short time. WEHS will contribute to reduce power loss due to heat release from the engine as well as reduce power consumed by the supercharger.

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