Experimental study of paraffin melting in cylindrical cavity with central electric heating rod

2019 ◽  
Vol 237 ◽  
pp. 264-271 ◽  
Author(s):  
Shuai Wang ◽  
Yun Guo ◽  
Changhong Peng ◽  
Wanhong Wang
Keyword(s):  
Experimental Study ◽  
Cylindrical Cavity ◽  
Electric Heating

A simulation apparatus for the experimental study of batch reactor control methods

1986 ◽  
Vol 51 (6) ◽  
pp. 1259-1267
Author(s):  
Josef Horák ◽  
Petr Beránek
Keyword(s):  
Experimental Study ◽  
Closed Loop ◽  
Dynamic Properties ◽  
Batch Reactor ◽  
Exothermic Reaction ◽  
Electric Heating ◽  
Batch Reactors ◽  
Exchange Area ◽  
The Stability ◽  
Methods Of Control

A simulation apparatus for the experimental study of the methods of control of batch reactors is devised. In this apparatus, the production of heat by an exothermic reaction is replaced by electric heating controlled by a computer in a closed loop; the reactor is cooled with an external cooler whose dynamic properties can be varied while keeping the heat exchange area constant. The effect of the cooler geometry on its dynamic properties is investigated and the effect of the cooler inertia on the stability and safety of the on-off temperature control in the unstable pseudostationary state is examined.

Experimental Study on Double-Diffusive Convection During Solidification of NH4Cl-H2O Hypereutectic Solution in Cylinder Cavity

2008 ◽  
Author(s):  
Bofeng Bai ◽  
Jun Lu ◽  
Lei Zhang ◽  
Heng Li
Keyword(s):  
Experimental Study ◽  
Cylindrical Cavity ◽  
Particle Image ◽  
Solidification Process ◽  
Double Diffusive Convection ◽  
Diffusive Convection ◽  
Image Velocimetry ◽  
Diffusive Interface ◽  
Contrary Direction ◽  
Double Diffusive

In order to reveal the law of double-diffusive convection of multi-compound solution in cylindrical cavity, experimental study on solidification of NH4Cl-H2O hypereutectic solution has been performed by using particle image velocimetry (PIV). The influencing factors of flow patterns and intensity are also analyzed. The results show that: 1) There are two approximately symmetric main convection cells in the liquid which are down along the sidewall and up along the center of the cylindrical cavity. Meanwhile, there are also two secondary cells on the bottom corner of cylindrical cavity, which flow in contrary direction to that of the main ones; 2) Due to the release of water during the solidification process, solute layers and diffusive interface are developed in the liquid and will be disappeared in the end; 3) The cooling temperature and the initial concentration have significantly effects on the flow velocity, solute layers and diffusive interface.

Experimental study of under-floor electric heating system with shape-stabilized PCM plates

2005 ◽  
Vol 37 (3) ◽  
pp. 215-220 ◽  
Author(s):  
Kunping Lin ◽  
Yinping Zhang ◽  
Xu Xu ◽  
Hongfa Di ◽  
Rui Yang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Electric Heating ◽  
Heating System

The Coaxial Pipe Electric Heating System for Pipelines

1983 ◽  
Vol 105 (4) ◽  
pp. 469-474 ◽  
Author(s):  
M. Koyanagi ◽  
H. Hojo ◽  
A. Nagamune ◽  
J. Ogata
Keyword(s):  
Experimental Study ◽  
Crude Oil ◽  
Electric Heating ◽  
Heating System ◽  
Mechanical Tests ◽  
Electromagnetic Analysis ◽  
Submarine Pipeline ◽  
Long Distance ◽  
Heating Systems ◽  
Ac Current

To transport highly viscous crude oil efficiently through pipelines, some electric heating systems have been conventionally used. But they include heating cables or tubes, which are troublesome in submarine pipeline construction. A new electric heating system without a cable has been developed and is applicable to long-distance submarine pipelines. This system has a coaxial steel pipe structure, using the pipes as a heater by applying AC current to this coaxial circuit. In this paper, electromagnetic analysis on this system, experimental study using a 30-m length test pipeline, and mechanical tests on the electric insulating structure of the system are described.

Thermal Convection in Tilted Cylindrical Cavities Embedded in Rocks

Volume 1 ◽  
2004 ◽  
Author(s):  
F. Sa´nchez ◽  
A. Medina ◽  
F. J. Higuera
Keyword(s):  
Experimental Study ◽  
Thermal Convection ◽  
Cylindrical Cavity ◽  
Solid Rock ◽  
Saturated Porous Medium ◽  
Vertical Temperature Gradient ◽  
Vertical Temperature ◽  
Fluid Saturated Porous Medium ◽  
Cylindrical Cavities ◽  
Temperature And Pressure

We present a theoretical and experimental study of the thermal convection in a fluid-filled, tilted cylindrical cavity and in a fluid-saturated porous medium filling a cylindrical cavity embedded in a solid slab (solid rock) which has a constant vertical temperature gradient far from the cavity. Closed-form, analytical solutions are obtained for the temperature field in the solid and for the velocity, temperature and pressure within the cavity.

Sign in / Sign up

Export Citation Format

Share Document