Numerical Study on Geometric Parameter effects of Power Generation Performances for Segmented Thermoelectric Generator

2018 ◽  
Vol 26 (01) ◽  
pp. 1850004 ◽  
Author(s):  
Mahesh Suresh Patil ◽  
Jae-Hyeong Seo ◽  
Moo-Yeon Lee
Keyword(s):  
Power Generation ◽  
Waste Heat Recovery ◽  
Thermoelectric Generator ◽  
Waste Heat ◽  
Numerical Study ◽  
Plate Thickness ◽  
Area Ratio ◽  
Physical Parameters ◽  
Thermoelectric Element ◽  
Conducting Plate

Thermoelectric generator (TEG) is a promising option in waste heat recovery with various advantages including nonmoving components, very low operating noise and overall high stability. However, low power generation efficiency of TEGs is still concerned for application in wider fields. The objective of the present study is to investigate the parameters affecting the performance and efficiency of segmented TEG. The physical parameters including length ratio, length-to-area ratio and thickness of conducting plate were considered. In addition, the effect of varying hot side temperature was analyzed. Performance of segmented TEG was compared based on the power generation and conversion efficiency. The results of the investigation showed that increasing Bi2Te3 length in the segmented TEG made up of Bi2Te3 and SiGe increased the maximum power generation and efficiency. As length-to-area ratio increased, the power generation decreased, however, efficiency increased slightly. In addition, as the hot side temperature increased from 150[Formula: see text]C to 650[Formula: see text]C, the power generation and efficiency both increased. Power generation and efficiency of segmented TEG increased when the conducting plate thickness was increased. The power generation and efficiency were 39.2% and 51.9% higher for TEG with asymmetrical element than TEG with symmetrical element showing that asymmetrical element would be better option for same thermoelectric element volume.

scholarly journals Car exhaust waste heat recovery using hexagon shaped thermoelectric generator

2021 ◽  
Vol 1 (1) ◽  
pp. 43-51
Author(s):  
Muhammad Fairuz Remeli ◽  
◽  
Baljit Singh ◽  
Keyword(s):  
Power Generation ◽  
Theoretical Model ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Thermoelectric Generator ◽  
Waste Heat ◽  
Combustion Engine ◽  
Early Stage ◽  
Electrical Performance ◽  
Engine System

Heat recovery technology using thermoelectric has attracted many research intentions mainly for its ability to generate power passively. The automotive engine usually produces waste heat ranging from 30-40% due to the thermodynamic limit. The use of thermoelectric generator (TEG) for waste heat recovery and power generation could increase the efficiency of the internal combustion engine system. This research developed and investigated a heat recovery system using a thermoelectric generator (TEG) for power generation. A thermoelectric generator (TEG) consisted of thermoelectric modules, hexagonal pipe connector and heat sinks was built and connected to an exhaust pipeline. A theoretical model was developed to access the thermal and electrical performance of the TEG system. The theoretical model consisted of the heat transfer mechanism including the thermal resistance networks from the flue gas to TEG and the heat sink. The electrical power output was determined using the Seebeck principle. The early stage of finding reveals that the system was able to produce an open circuit voltage of 0.13 V for a small temperature gradient of 3ᵒC between the cold and hot surface of the TEG. The further improvement of the system is currently under investigation for producing higher power. In the future, this system hopefully could replace the car battery for charging the alternator as well as increasing the overall efficiency of the engine system.

High efficiency GeTe-based materials and modules for thermoelectric power generation

2021 ◽  
Author(s):  
Tong Xing ◽  
Qingfeng Song ◽  
Pengfei Qiu ◽  
Qihao Zhang ◽  
Ming Gu ◽  
...  
Keyword(s):  
Power Generation ◽  
Thermoelectric Power ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
High Efficiency ◽  
Waste Heat ◽  
Thermoelectric Performance ◽  
Thermoelectric Generators ◽  
Thermoelectric Power Generation

GeTe-based materials have a great potential to be used in thermoelectric generators for waste heat recovery due to their excellent thermoelectric performance, but their module research is greatly lagging behind...

scholarly journals Analisis Kinerja Sistem Proteksi Type M-3425A pada Generator di WHRPG PT. Semen Padang

2020 ◽  
Vol 17 (2) ◽  
pp. 81
Author(s):  
Liliana Liliana
Keyword(s):  
Power Generation ◽  
Kyoto Protocol ◽  
Clean Development Mechanism ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Generator Protection ◽  
Development Mechanism

Waste Heat Recovery Power Generation (WHRPG) adalah sebuah sistem mengkonservasi energi dan menunjang pembangunan bersih atau Clean Development Mechanism (CDM) yang merupakan implementasi dari Kyoto Protocol. Sistem ini terbukti dapat  menurunkan emisi CO2 sebesar 47.000 ton per tahun. WHRPG menggunakan generator sinkron dengan kapasitas 8,5 MW dilengkapi dengan sistem eksitasi tanpa sikat.  Pengoperasian WHRPG yang kontinyu harus didukung dengan pengoperasian generator dengan pengamanan yang optimal. Generator harus terus dilindungi dari gangguan-gangguan yang mungkin terjadi. Pengamanan Generator telah dilengkapi dengan Generator Protection Type M-3425 yang terdiri atas beberapa jenis pengamanan di dalamnya. Penelitian ini bertujuan untuk menganalisis kinerja proteksi pada generator khususnya terhadap gangguan tegangan lebih dan frekuensi rendah berupa kenaikan tegangan mencapai 45% dan gangguan penurunan frekuensi mencapai 6 % . Penelitian ini mengidentifikasi ketepatan kinerja relay Over Current Relay dan  under frequency Relay dalam melaksanakan pengamanan gangguan tersebut.  Hasil pemantauan dan analisis dinyatakan bahwa kedua  relay dapat dengan cepat membaca gangguan yang terjadi, selanjutnya memberi isyarat untuk mengaktifkan lock out relay, alarm dan lampu indikator sehingga gangguanpun dengan segera dapat diatasi sehingga potensi kerusakan yang bisa terjadi  pada generator bisa diminimalisir.

scholarly journals Waste Heat Recovery from a Marine Waste Incinerator Using a Thermoelectric Generator

2012 ◽  
Vol 41 (6) ◽  
pp. 1024-1029 ◽  
Author(s):  
N. R. Kristiansen ◽  
G. J. Snyder ◽  
H. K. Nielsen ◽  
L. Rosendahl
Keyword(s):  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Thermoelectric Generator ◽  
Waste Heat ◽  
Waste Incinerator ◽  
Marine Waste
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