scholarly journals Performance of Siloxane Mixtures in a High-Temperature Organic Rankine Cycle Considering the Heat Transfer Characteristics during Evaporation

Energies ◽  
2014 ◽  
Vol 7 (9) ◽  
pp. 5548-5565 ◽  
Author(s):  
Theresa Weith ◽  
Florian Heberle ◽  
Markus Preißinger ◽  
Dieter Brüggemann
Keyword(s):  
Heat Transfer ◽  
High Temperature ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Heat Transfer Characteristics ◽  
Transfer Characteristics

scholarly journals Effect of variable heat input on the heat transfer characteristics in an Organic Rankine Cycle system

2016 ◽  
Vol 1 ◽  
pp. 13 ◽  
Author(s):  
Mahdi Hatf Kadhum Aboaltabooq ◽  
Tudor Prisecaru ◽  
Horatiu Pop ◽  
Valentin Apostol ◽  
Malina Prisecaru ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Heat Input ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Heat Transfer Characteristics ◽  
Transfer Characteristics ◽  
Cycle System ◽  
Variable Heat

scholarly journals Heat transfer in a novel microwave heating device coupled with atomization feeding

2021 ◽  
pp. 288-288
Author(s):  
Shangzhi Yu ◽  
Qinglong Xie ◽  
Xiaoning Mao ◽  
Ying Duan ◽  
Yong Nie
Keyword(s):  
Heat Transfer ◽  
Experimental Data ◽  
High Temperature ◽  
Microwave Heating ◽  
Flow Rate ◽  
Orifice Diameter ◽  
Spray Parameters ◽  
Heat Transfer Characteristics ◽  
Transfer Characteristics ◽  
Spray Flow Rate

The heat transfer characteristics of the microwave heating coupled with atomization feeding were investigated using ethanol as the spray medium on a pressure swirl nozzle. The effects of spray height, flow rate and temperature on the sauter mean diameter (SMD) of atomized droplets were examined. The results showed that the droplet SMD was 12-130 ?m, which increased with the spray height and decreased with the flow rate and temperature of spray medium. Through the fitting of the experimental data, the dimensionless correlation of the droplet SMD which was based on orifice diameter, Reynolds and Ohnesorge numbers was obtained. The calculated results were basically consistent with the experimental data within 15% error. The heat transfer characteristics of atomized droplets on high-temperature surface of SiC bed heated by microwave were then investigated. The effects of spray flow rate, spray height and spray temperature on the heat transfer characteristics were examined. The power of spray heat transfer decreased with the temperature and increased with the spray flow rate and spray height. The dimensionless correlation to describe the heat transfer characteristics of atomized droplets on the high-temperature SiC surface under the microwave heating was obtained which included thermophysical properties of spray medium, spray parameters, and temperatures of the high-temperature bed surface and spray medium, with the error of ?20%. These correlations can be used to predict the SMD of the atomized droplets and the power of spray heat transfer in the microwave heating process.

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