scholarly journals A modular 3D printed isothermal heat flow calorimeter for reaction calorimetry in continuous flow

2020 ◽  
Vol 5 (8) ◽  
pp. 1410-1420 ◽  
Author(s):  
Manuel C. Maier ◽  
Michael Leitner ◽  
C. Oliver Kappe ◽  
Heidrun Gruber-Woelfler
Keyword(s):  
3D Printing ◽  
Heat Flow ◽  
Continuous Flow ◽  
Reaction Calorimetry ◽  
Flow Calorimeter ◽  
Heat Flow Calorimeter ◽  
Process Understanding ◽  
3D Printed ◽  
Isothermal Heat Flow Calorimeter

The presented continuous flow calorimeter enables process understanding of novel flow syntheses and the use of highly reactive compounds. Adaptation of the calorimeter is possible via 3D printing and due to its modular and expandable design.

An isothermal heat flow calorimeter for large-volume applications

2011 ◽  
Vol 110 (2) ◽  
pp. 1021-1027 ◽  
Author(s):  
Vratislav Tydlitát ◽  
Jan Zákoutský ◽  
Robert Černý
Keyword(s):  
Heat Flow ◽  
Large Volume ◽  
Flow Calorimeter ◽  
Heat Flow Calorimeter ◽  
Isothermal Heat Flow Calorimeter

scholarly journals Monitoring the course of early-age reactions in alkali activated aluminosilicates

2019 ◽  
Vol 282 ◽  
pp. 02056
Author(s):  
Miloš Jerman ◽  
Vratislav Tydlitát ◽  
Robert Černý
Keyword(s):  
Heat Flow ◽  
Sodium Hydroxide ◽  
Water Glass ◽  
Early Time ◽  
Early Age ◽  
Heat Power ◽  
Reaction Heat ◽  
Flow Calorimeter ◽  
Isothermal Heat Flow Calorimeter ◽  
Alkali Activated

In this paper the reaction heat development of alkali activated aluminosilicates is studied by an isothermal heat flow calorimeter. The highest reaction activity is observed during two hours after mixing. The hydration heat power at early time is influenced mainly by the composition of tested mixtures involving ceramic dust as precursor and different amounts of sodium hydroxide and water glass as activators and by temperature.

Resistance thermometry-based picowatt-resolution heat-flow calorimeter

2013 ◽  
Vol 102 (16) ◽  
pp. 163110 ◽  
Author(s):  
S. Sadat ◽  
E. Meyhofer ◽  
P. Reddy
Keyword(s):  
Heat Flow ◽  
Flow Calorimeter ◽  
Heat Flow Calorimeter ◽  
Resistance Thermometry

Theory of heat-flow calorimeter

1974 ◽  
Vol 46 (3) ◽  
pp. 398-403 ◽  
Author(s):  
Satohiro. Tanaka ◽  
Kazuo. Amaya
Keyword(s):  
Heat Flow ◽  
Flow Calorimeter ◽  
Heat Flow Calorimeter

Excess Heat Power Measurement by Heat-Flow Calorimeter in a D/Pd Gas-Loading System

2014 ◽  
Vol 687-691 ◽  
pp. 874-877 ◽  
Author(s):  
Bing Jun Shen ◽  
Xing Ye Wang ◽  
Wu Shou Zhang ◽  
Li Hong Jin ◽  
Xin Le Zhao ◽  
...  
Keyword(s):  
Heat Flow ◽  
Quadratic Equation ◽  
Input Power ◽  
Nitrogen Atmosphere ◽  
Power Measurement ◽  
Heat Power ◽  
Excess Heat ◽  
Flow Calorimeter ◽  
Heat Flow Calorimeter ◽  
Loading System

In order to confirm the reliability and accuracy of the excess heat triggered by current in the previous work [1-3], a new designed and built heat-flow calorimeter [4] was introduced in the same D/Pd gas-loading system as mentioned previously. The calorimeter was calibrated in nitrogen atmosphere and the results between the input power (P) and the exothermal electromotive force (V) could be simulated by a quadratic equation: P = (15.356 ± 0.068) V – (0.014 ± 0.039) V2. The maximum excess power (6.398 ± 0.191 W) were found at the condition of an optimum current (8.47 A) and a deuterium pressure (3 × 104 Pa). The reproducibility was 3/3 and the total excess energy released in these experiments was about 0.70 ± 0.02 MJ within 40 hours, which means (1.6 ± 0.1) ×103 eV for each palladium atom. The excess heat power and excess heat energy were far more than that in a chemical reaction.

Optimal data aquisition for heat flow calorimeter

1984 ◽  
Vol 72 (1-2) ◽  
pp. 83-94 ◽  
Author(s):  
L.G. Karlsen ◽  
H. Søeberg ◽  
J. Villadsen
Keyword(s):  
Heat Flow ◽  
Flow Calorimeter ◽  
Heat Flow Calorimeter ◽  
Data Aquisition
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