Development and Experimental Study of a New Electric-Heating Rapid Thermal Response Mold for RHCM Process

2011 ◽  
Vol 4 (6) ◽  
pp. 2082-2086 ◽  
Author(s):  
Guilong Wang ◽  
Guoqun Zhao ◽  
Yanjin Guan
Keyword(s):  
Experimental Study ◽  
Thermal Response ◽  
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.

Analysis of Hybrid Electric/Thermofluidic Control for Wet Shape Memory Alloy Actuators

2009 ◽  
Author(s):  
Leslie Flemming ◽  
Stephen Mascaro
Keyword(s):  
Control Strategies ◽  
Fluid Dynamic ◽  
Thermal Response ◽  
Electric Heating ◽  
Electrical Heating ◽  
Linear Contraction ◽  
Heating And Cooling ◽  
The Wire ◽  
Temperature Strain ◽  
Strain Model

A wet SMA actuator is characterized by an SMA wire embedded within a compliant fluid-filled tube. Heating and cooling of the SMA wire produce a linear contraction and extension of the wire. Thermal energy can be transferred to and from the wire using combinations of resistive heating and free/forced convection using hot and cold fluid. The goal of this paper is to analyze the speed and efficiency of wet SMA actuators using a variety of control strategies involving different combinations of electrical and thermofluidic inputs. A computational fluid dynamic model is used in conjunction with a temperature-strain model to simulate the thermal response of the wire and compute strains, contraction/extension times and efficiency. The simulations produce cycling rates of up to 5 Hz for electrical heating and fluidic cooling, and up to 2 Hz for fluidic heating and cooling. The results demonstrate efficiencies up to 0.5% for electric heating and up to 0.2% for fluidic heating.

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.

Experimental study on the vascular thermal response to visible laser pulses

2014 ◽  
Vol 30 (1) ◽  
pp. 135-145 ◽  
Author(s):  
D. Li ◽  
B. Chen ◽  
W. J. Wu ◽  
G. X. Wang ◽  
Y. L. He ◽  
...  
Keyword(s):  
Experimental Study ◽  
Thermal Response ◽  
Laser Pulses ◽  
Visible Laser

scholarly journals Experimental Study of Thermal Restraint in Bio-Protectant Disaccharides by FTIR Spectroscopy

2018 ◽  
Vol 12 (1) ◽  
pp. 123-133 ◽  
Author(s):  
S. Magazù ◽  
E. Calabrò ◽  
M.T. Caccamo
Keyword(s):  
Experimental Study ◽  
Ir Spectra ◽  
Ftir Spectroscopy ◽  
Spectral Range ◽  
Thermal Response ◽  
Center Frequency ◽  
Water Mixture ◽  
Spectral Distance

Background: In the present paper, InfraRed (IR) spectra on water mixtures of two homologous disaccharides, i.e. sucrose and trehalose, as a function of temperature have been collected. Methods: In particular, IR spectra were registered, in the spectral range from 4000 cm-1 to 400 cm-1, to investigate the thermal response of the water mixtures of two homologous disaccharides, through positive thermal scans, i.e. by increasing the temperature from the value of 25°C to the value of 50°C. The OH-stretching region has been analyzed by means of two simple and straightforward procedures, i.e. by evaluating the shift of the intramolecular OH stretching center frequency and the Spectral Distance (SD). Result and Conclusion: Both the analyses indicate that trehalose water mixture have a higher thermal response than that of the sucrose-water mixture.

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