Digital temperature programmer with two temperature sensors

1981 ◽  
Vol 21 (1) ◽  
pp. 163-171 ◽  
Author(s):  
S. Gál ◽  
J. Muráti ◽  
J. Sztatisz
Keyword(s):  
Temperature Sensors ◽  
Two Temperature

In-Mold Monitoring of Temperature and Cavity Pressure During the Injection Molding Process

2014 ◽  
Author(s):  
Catalin Fetecau ◽  
Felicia Stan ◽  
Laurentiu I. Sandu
Keyword(s):  
Injection Molding ◽  
Pressure Sensors ◽  
Temperature Sensors ◽  
Injection Molding Process ◽  
Cavity Pressure ◽  
Molding Process ◽  
Shear Rates ◽  
Wide Range ◽  
Simulation Results ◽  
Two Temperature

This paper focuses on the in-mold monitoring of temperature and cavity pressure. The melt contact temperature and the cavity pressure along the flow path were directly measured using two pressure sensors and two temperature sensors fitted into the cavity of a spiral mold. Three melt temperatures and dies of different heights (1.0, 1.5 and 2 mm) were used to achieve a wide range of practically relevant shear rates. In order to analyze the extent to which the numerical simulation can predict the behavior of the molten polymer during the injection molding process, molding experiments were simulated using the Moldflow software and the simulation results were compared with the experimental data under the same injection molding conditions.

Simulation and Analysis of a Micro-Fluidics Cooling System

2007 ◽  
Vol 339 ◽  
pp. 490-494
Author(s):  
Xiao Wei Liu ◽  
Rong Yan Chuai ◽  
You Feng Zhang ◽  
Q.F. Tao
Keyword(s):  
Temperature Distribution ◽  
Silicon Substrate ◽  
Cooling System ◽  
Element Model ◽  
Temperature Sensors ◽  
Quantitative Relation ◽  
Micro Fluidics ◽  
Micro Pump ◽  
Design Requirements ◽  
Two Temperature

The paper presents a micro-fluidics cooling system which is designed on a silicon substrate including a micro-pump, two temperature sensors, a flow sensor and some microchannels. To design the cooling system optimally, a finite element model is built. The temperature distribution on the silicon substrate is analyzed using the model. Moreover, the quantitative relation is given of the temperature distribution, flow velocity and driving capability of the micro pump. Consequently, the structure parameters and design requirements of the cooling system are obtained.

Experimental Study on Characteristics of False Defrosting for Split Air Source Heat Pump

2012 ◽  
Vol 220-223 ◽  
pp. 585-591
Author(s):  
Rui Chao Tang ◽  
Zhi Tao Han ◽  
Er Kang Zhang ◽  
Shu Guang Liu ◽  
Hai Quan Zhang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Heat Exchanger ◽  
Heat Pump ◽  
Control Method ◽  
Temperature Sensors ◽  
Air Conditioner ◽  
Air Source Heat Pump ◽  
Shaft Power ◽  
Discharge Pressure ◽  
Two Temperature

Detailed experimental study on the characteristics of false defrosting of a split type air-source heat pump (ASHP) has been made. The results show that the false defrosting is seriously detrimental to ASHP by comparing varied parameters of compressor such as shaft power, suction and discharge pressure, etc. in normal defrosting and false defrosting. This paper also analyzes a common defrosting control method for air conditioner of split ASHP room, i.e., with two temperature sensors set on indoor heat exchanger, the operating principle thereof and drawbacks in terms of causing false defrosting.

scholarly journals Comparison of Temperature Control and Temperature Difference Control for a Kaibel Dividing Wall Column

Processes ◽  
2019 ◽  
Vol 7 (10) ◽  
pp. 773 ◽  
Author(s):  
Xing Qian ◽  
Rui Liu ◽  
Kejin Huang ◽  
Haisheng Chen ◽  
Yang Yuan ◽  
...  
Keyword(s):  
Temperature Control ◽  
Temperature Difference ◽  
Capital Investment ◽  
Temperature Sensors ◽  
Distillation Process ◽  
Control Structures ◽  
Dividing Wall Column ◽  
Dynamic Performances ◽  
Two Temperature ◽  
Better Than

A dividing wall column (DWC) effectively intensifies the distillation process with a reduced energy consumption, capital investment, and space. The three-product DWC has been investigated intensively and extensively; however, the four-product Kaibel DWC has received scarce attention. This study aimed to propose feasible control structures for the Kaibel DWC using only temperature sensors in order to promote its industrialization. Two temperature control structures, two temperature difference control structures, and two double temperature difference control structures were studied. The feasibility of the six proposed control structures was verified with a wide variety of feed disturbances. In most cases, temperature difference control was better than temperature control to maintain product purities. The dynamic performances proved that the inserted feed disturbances were handled well. These results help to promote the industrialization of the Kaibel DWC.

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