Choice of heat-transfer agent for heat pipes operating in the temperature range 300–500°C

1980 ◽  
Vol 39 (5) ◽  
pp. 1214-1216
Author(s):  
V. K. Shchukin ◽  
I. I. Mosin ◽  
Yu. V. Matveev
Keyword(s):  
Heat Transfer ◽  
Heat Pipes ◽  
Heat Transfer Agent ◽  
Temperature Range

scholarly journals Ways to heat hot water via the heat pipes

2018 ◽  
Vol 168 ◽  
pp. 09003
Author(s):  
Peter Hrabovský ◽  
Zuzana Kolková ◽  
Jozef Matušov ◽  
Patrik Nemec
Keyword(s):  
Heat Transfer ◽  
Heat Pipe ◽  
Nuclear Power ◽  
Heat Pipes ◽  
Hot Water ◽  
Temperature Range ◽  
Thermal Output ◽  
Actual Use ◽  
Mechanical Elements ◽  
The Way

The article deals various ways of heating hot water where heat is transferred by the basic phenomena of heat transfer theories, which take place on an innovative basis with the advantage of the absence of mechanical elements. The heat transfer in this case ensures a change in the phase-in phase of the working substance – the fluid – from which the thermal output and the efficiency of the device are derived. The devices described in this article work on the same principle of heat transfer. Each device is characterized by own construction and the principle of heat transfer. Heat pipes are classified according to the way of operation and the place of use. Subdivision of the heat pipe, in terms of its actual, use in the desired temperature range. At present, heating plants use cooling technologies (nuclear power, space stations, IT).

Limiting characteristics of inclined thermosyphons and heat pipes with excess heat-transfer agent

1984 ◽  
Vol 46 (5) ◽  
pp. 505-510
Author(s):  
L. L. Vasil'ev ◽  
L. P. Grakovich ◽  
D. K. Khrustalev
Keyword(s):  
Heat Transfer ◽  
Heat Pipes ◽  
Heat Transfer Agent ◽  
Excess Heat

scholarly journals Testing algorithm for heat transfer performance of nanofluid-filled heat pipe based on neural network

Open Physics ◽  
2020 ◽  
Vol 18 (1) ◽  
pp. 751-760
Author(s):  
Lei Lei
Keyword(s):  
Neural Network ◽  
Heat Transfer ◽  
Heat Pipe ◽  
Heat Transfer Performance ◽  
Volume Fraction ◽  
Heat Pipes ◽  
Transfer Performance ◽  
Analysis Model ◽  
Accurate Analysis ◽  
Testing Algorithm

AbstractTraditional testing algorithm based on pattern matching is impossible to effectively analyze the heat transfer performance of heat pipes filled with different concentrations of nanofluids, so the testing algorithm for heat transfer performance of a nanofluidic heat pipe based on neural network is proposed. Nanofluids are obtained by weighing, preparing, stirring, standing and shaking using dichotomy. Based on this, the heat transfer performance analysis model of the nanofluidic heat pipe based on artificial neural network is constructed, which is applied to the analysis of heat transfer performance of nanofluidic heat pipes to achieve accurate analysis. The experimental results show that the proposed algorithm can effectively analyze the heat transfer performance of heat pipes under different concentrations of nanofluids, and the heat transfer performance of heat pipes is best when the volume fraction of nanofluids is 0.15%.

Three-dimensional heat transfer analysis of flat-plate oscillating heat pipes

2021 ◽  
pp. 117189
Author(s):  
Kimihide Odagiri ◽  
Kieran Wolk ◽  
Stefano Cappucci ◽  
Stefano Morellina ◽  
Scott Roberts ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Flat Plate ◽  
Three Dimensional ◽  
Heat Pipes ◽  
Heat Transfer Analysis

Thermal Modeling of Unlooped and Looped Pulsating Heat Pipes

2001 ◽  
Vol 123 (6) ◽  
pp. 1159-1172 ◽  
Author(s):  
Mohammad B. Shafii ◽  
Amir Faghri ◽  
Yuwen Zhang
Keyword(s):  
Heat Transfer ◽  
Finite Difference ◽  
Heat Pipes ◽  
Analytical Models ◽  
Charge Ratio ◽  
Sensible Heat ◽  
Governing Equations ◽  
Heating Wall ◽  
Heat Mode ◽  
Explicit Finite Difference

Analytical models for both unlooped and looped Pulsating Heat Pipes (PHPs) with multiple liquid slugs and vapor plugs are presented in this study. The governing equations are solved using an explicit finite difference scheme to predict the behavior of vapor plugs and liquid slugs. The results show that the effect of gravity on the performance of top heat mode unlooped PHP is insignificant. The effects of diameter, charge ratio, and heating wall temperature on the performance of looped and unlooped PHPs are also investigated. The results also show that heat transfer in both looped and unlooped PHPs is due mainly to the exchange of sensible heat.

Heat transfer intensification by increasing vapor flow rate in flat heat pipes

2015 ◽  
Author(s):  
Silviu Sprinceana ◽  
Ioan Mihai ◽  
Marius Beniuga ◽  
Cornel Suciu
Keyword(s):  
Heat Transfer ◽  
Flow Rate ◽  
Heat Pipes ◽  
Vapor Flow ◽  
Heat Transfer Intensification

scholarly journals Numerical simulation study of the heat transfer characteristic in Ω-shape grooved heat pipes

2017 ◽  
Vol 205 ◽  
pp. 3916-3922
Author(s):  
Kaimin Yang ◽  
Zhuang Cong ◽  
Yudong Mao ◽  
Xiuli Zhang
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Simulation Study ◽  
Heat Transfer Characteristic ◽  
Heat Pipes ◽  
Transfer Characteristic
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