Automotive waste heat harvesting for electricity generation using thermoelectric systems — An overview

In order to protect the environment, save energy and reduce emissions, and promote the utilization of wave energy, this paper reviews the development history of application generation technology, summarizes its development from two aspects of optimization and application of wave energy conversion devices, analyses the application examples of wave energy generation devices on ships. This paper summarizes the application trend of wave power generation devices on ships: wave power generation should be used as auxiliary and domestic electricity for ships and wave energy should be combined with other new energy sources. Wave energy application in marine power generation can effectively reduce emissions from ships, which is conducive to the sustainable development of human society. The system mainly included low speed marine main diesel engine, waste heat boiler, electricity generation sub-system of power turbine, electricity generation sub-system of steam turbine, the heat exchange equipment, electricity generation sub-system of organic working medium steam turbine and other equipments. Based on experimental data of main engine and later theoretical calculation, this paper studied the effect rules of electricity generation power, waste heat utilization potential and related parameters of the waste heat utilization system under different main diesel load and ambient temperature.

Download Full-text

System Design of Electricity Generation Using Waste Heat from LNG Automobile

E3S Web of Conferences ◽

10.1051/e3sconf/202014502062 ◽

2020 ◽

Vol 145 ◽

pp. 02062

Author(s):

Canzong Zhou ◽

Shuyi Chen ◽

Wei Cui ◽

Zhengmao Yao

Keyword(s):

High Temperature ◽

Low Temperature ◽

Electricity Generation ◽

Waste Heat ◽

Cooling System ◽

Combustion Engine ◽

Lead Telluride ◽

Maximum Output ◽

Thermoelectric Conversion ◽

Temperature Environment

According to the research, thermoelectricity generation can recycle the heat contained in the cooling system of internal combustion engine. This paper is about taking advantage of the feature in the huge temperature difference at about 560 °C which is formed between high-temperature engine and LNG (Liquefied Natural Gas) in low temperature and the ability that LNG provides semiconductor with thermoelectric conversion material so as to produce the maximum output voltage in low temperature. We take advantage of lead telluride materials that adapt to the high temperature environment and bismuth telluride materials that adapt to the low temperature environment, both of which forms a circuit and are designed as a thermoelectric power generation device. Also, we confirm the possibility of applying the device to cars.

Download Full-text

Powering microbial electrolysis cells by electricity generation from simulated waste heat of anaerobic digesters using thermoelectric generators

International Journal of Hydrogen Energy ◽

10.1016/j.ijhydene.2019.12.073 ◽

2020 ◽

Vol 45 (7) ◽

pp. 4065-4072 ◽

Cited By ~ 3

Author(s):

Akshay Jain ◽

Zhen He

Keyword(s):

Electricity Generation ◽

Waste Heat ◽

Thermoelectric Generators ◽

Anaerobic Digesters ◽

Microbial Electrolysis Cells ◽

Electrolysis Cells ◽

Simulated Waste ◽

Microbial Electrolysis

Download Full-text

Temperature-Weighted Assessment of Waste Heat Availability With Matched End-Use Applications for Optimal Primary Energy Usage in the USA

Volume 5: Energy Systems Analysis, Thermodynamics and Sustainability; NanoEngineering for Energy; Engineering to Address Climate Change, Parts A and B ◽

10.1115/imece2010-39332 ◽

2010 ◽

Cited By ~ 1

Author(s):

Alexander S. Rattner ◽

Srinivas Garimella

Keyword(s):

Air Conditioning ◽

Electricity Generation ◽

Power Plants ◽

Waste Heat ◽

Residential Building ◽

Energy Scale ◽

Low Grade ◽

Energy Usage ◽

Water Heating ◽

The Usa

Approximately two-thirds of all input energy used for power and electricity generation in the USA is lost as heat during conversion processes. Additionally, 12.5% of primary fuel and 20.3% of the electricity generated through these processes are employed for space heating, water heating, and refrigeration where low-grade heat could suffice. The potential for harnessing waste heat from power generation and thermal processes to perform these low-grade tasks is assessed here. By matching power plant outlet streams with applications at corresponding temperature ranges, this study identifies sufficient waste heat to satisfy all residential, building, and manufacturing space and water heating needs. Sufficient high temperature exhaust from power plants is identified to satisfy 27% of residential air conditioning demand with thermally activated refrigeration or all industrial low temperature (100–150°C) process heating and refrigeration needs. Exhaust from vehicle engines is sufficient to satisfy all in-vehicle air conditioning and 68% of electricity generation demand. Energy usage and waste heat availability and application information collected for this study is compiled in a thermodynamically informed database. By providing SQL queries, this database can answer detailed questions about energy sources and demands delineated by temperature, energy scale, process, and location. This capability can inform future infrastructure and development to effectively capture waste heat that would be lost today, substantially reducing the USA national energy intensity across all end uses.

Download Full-text

High Efficiency Solar to Electric Energy Conversion through Spectrum Splitting and Multi-channel Full Spectrum Harvesting

MRS Proceedings ◽

10.1557/opl.2013.230 ◽

2013 ◽

Vol 1493 ◽

pp. 31-36 ◽

Cited By ~ 1

Author(s):

Lirong Zeng Broderick ◽

Tiejun Zhang ◽

Marco Stefancich ◽

Brian R. Albert ◽

Evelyn Wang ◽

...

Keyword(s):

Electricity Generation ◽

High Efficiency ◽

Waste Heat ◽

Electric Energy ◽

Solar Spectrum ◽

Thermal Storage ◽

High Energy ◽

Optimized Design ◽

Full Spectrum ◽

Spectrum Splitting

ABSTRACTA system combining photovoltaic (PV) and solar thermal approaches is designed to convert solar energy to electricity with high efficiency across the full solar spectrum. Concentrated solar spectrum is split into two parts: PV and thermal. The PV part of the spectrum is further split into several subbands directed to bandgap appropriate solar cells on an inexpensive Si substrate. Epitaxial Ge on Si is used as a virtual substrate for III-V semiconductor growth. At long and very short wavelengths where PV efficiency is low, solar radiation is directed to a high temperature thermal storage tank for electricity generation using heat engines. The potential of using PV waste heat due to thermalization of high energy photoelectrons for electricity generation is also investigated. Detailed optical and thermal analysis show that with optimized design and neglecting optical component loss, system power conversion efficiency can reach 56%, including more than 16% absolute contribution from thermal storage.

Download Full-text