scholarly journals Operation and Charging Test for a Electrical Bus by the Low Temperature Difference Indirect Heating Stirling Engine with a Wood Biomass Boiler in the Expo '70 Commemorative Park.

2011 ◽  
Vol 77 (776) ◽  
pp. 1026-1030 ◽  
Author(s):  
Makoto TAKEUCHI ◽  
Koichi KANZAKI ◽  
Noriaki OTSUKA ◽  
Makoto KAWASHIMA ◽  
Shinji SUZUKI
Keyword(s):  
Low Temperature ◽  
Temperature Difference ◽  
Stirling Engine ◽  
Wood Biomass ◽  
Biomass Boiler ◽  
Indirect Heating

Early Development Of A 100 Watt Low Temperature Difference Stirling Engine

2021 ◽  
Author(s):  
Matthias Lottmann ◽  
Zachary C. de Rouyan ◽  
Linda Hasanovich ◽  
Steven M. W. Middleton ◽  
Michael Nicol-Seto ◽  
...  
Keyword(s):  
Low Temperature ◽  
Early Development ◽  
Temperature Difference ◽  
Stirling Engine

scholarly journals An Analysis Model Combining Gamma-Type Stirling Engine and Power Converter

Energies ◽  
2019 ◽  
Vol 12 (7) ◽  
pp. 1322 ◽  
Author(s):  
Hua-Ju Shih
Keyword(s):  
Low Temperature ◽  
Bias Voltage ◽  
Temperature Difference ◽  
Energy Harvester ◽  
Waste Heat ◽  
Power Converter ◽  
Stirling Engine ◽  
Living Environment ◽  
Analysis Model ◽  
Variable Capacitance

Waste heat is a potential source for powering our living environment. It can be harvested and transformed into electricity. Ohmic heat is a common type of waste heat. However, waste heat has the following limitations: wide distribution, insufficient temperature difference (ΔT < 70 K) for triggering turbines, and producing voltage below the open voltage of the battery. This paper proposes an energy harvester model that combines a gamma-type Stirling engine and variable capacitance. The energy harvester model is different from Tavakolpour-Saleh’s free-piston-type engine [7.1 W at ΔT = 407 K (273–680 K)]. The gamma-type Stirling engine is a low-temperature-difference engine. It can be triggered by a minimum ΔT value of 12 K (293–305 K). The triggering force in the variable capacitance is almost zero. Furthermore, the gamma-type Stirling engine is suitable for harvesting waste heat at room temperature. This study indicates that 21 mW of energy can be produced at ΔT = 30 K (293–323 K) for a bias voltage of 70 V and volume of 103.25 cc. Because of the given bias voltage, the energy harvester can break through the open voltage of the battery to achieve energy storage at a low temperature difference.

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