Adiabatic calorimeter for isochoric specific heat capacity measurements and experimental data of compressed liquid R1234yf

2018 ◽  
Vol 125 ◽  
pp. 86-92 ◽  
Author(s):  
Quan Zhong ◽  
Xueqiang Dong ◽  
Yanxing Zhao ◽  
Jingzhou Wang ◽  
Haiyang Zhang ◽  
...  
Keyword(s):  
Experimental Data ◽  
Heat Capacity ◽  
Specific Heat ◽  
Specific Heat Capacity ◽  
Adiabatic Calorimeter ◽  
Compressed Liquid ◽  
Heat Capacity Measurements

Heat Capacity Measurements of Loose Materials with Respect to Long Heat Accumulation

2016 ◽  
Vol 835 ◽  
pp. 542-546
Author(s):  
Veronika Šípková ◽  
David Bujdoš ◽  
Martina Vodičková
Keyword(s):  
Heat Capacity ◽  
Specific Heat ◽  
Specific Heat Capacity ◽  
Heat Storage ◽  
Recycled Aggregates ◽  
Heat Accumulation ◽  
Heat Capacity Measurements

The paper is aimed at storing heat with gravel. During testing, we used various kinds of recycled aggregates, were studied their characteristics and suitability for ground heat storage. The most important feature is the specific heat capacity which was measured through own construction of the calorimeter. The construction of the calorimeter and measured results are summarized in this paper.

Thermal conductivity and specific heat capacity measurements of CuO nanofluids

2013 ◽  
Vol 115 (2) ◽  
pp. 1883-1891 ◽  
Author(s):  
Benigno Barbés ◽  
Ricardo Páramo ◽  
Eduardo Blanco ◽  
Carlos Casanova
Keyword(s):  
Thermal Conductivity ◽  
Heat Capacity ◽  
Specific Heat ◽  
Specific Heat Capacity ◽  
Heat Capacity Measurements

Specific Heat Capacity Measurements of Intermetallic Phases in the Ternary Al-Ti-Cr System

2014 ◽  
Vol 35 (6) ◽  
pp. 658-665 ◽  
Author(s):  
Mario J. Kriegel ◽  
Dmytro Pavlyuchkov ◽  
Olga Fabrichnaya ◽  
Magnus Rohde ◽  
David Rafaja ◽  
...  
Keyword(s):  
Heat Capacity ◽  
Specific Heat ◽  
Specific Heat Capacity ◽  
Intermetallic Phases ◽  
Heat Capacity Measurements ◽  
Cr System

The State primary standard of the unit of specific heat capacity of solids GET 60-2019

2020 ◽  
pp. 3-8 ◽  
Author(s):  
Tatiana A. Kompan ◽  
Valentin Kulagin ◽  
Viktoriya V. Vlasova ◽  
Sergey V. Kondratiev ◽  
Alexander Ya. Lukin ◽  
...  
Keyword(s):  
Heat Capacity ◽  
Specific Heat ◽  
Specific Heat Capacity ◽  
Primary Standard ◽  
High Accuracy ◽  
Thermal Capacity ◽  
Adiabatic Calorimeter ◽  
Modes Of Operation ◽  
Sources Of Uncertainty ◽  
Lower Accuracy

The paper describes the creation of the new State standard of thermal capacity of solids. The main point of the project is the design of the high accuracy adiabatic calorimeter КА-С4. The construction and the modes of operation of installation are presented. The sources of uncertainty and the resulting values of accuracy are analyzed. Also the paper contains the information about the measures for the transmitting of the unit to the devices of lower accuracy.

Enhanced Specific Heat Capacity of Nanomaterials Synthesized by Dispersing Silica Nanoparticles in Eutectic Mixtures

2013 ◽  
Vol 135 (3) ◽  
Author(s):  
Donghyun Shin ◽  
Debjyoti Banerjee
Keyword(s):  
Heat Capacity ◽  
Specific Heat ◽  
Silica Nanoparticles ◽  
Specific Heat Capacity ◽  
Solid Phase ◽  
Thermal Power ◽  
Lithium Carbonate ◽  
Molar Ratio ◽  
Heat Capacity Measurements ◽  
The Cost

Anomalous enhancements in the specific heat capacity values of nanomaterials were measured in this study. Silica nanoparticles (∼2–20 nm) were dispersed into eutectic of lithium carbonate and potassium carbonate (62:38 by molar ratio) at 1.5% mass concentration. The specific heat capacity measurements were performed using a differential scanning calorimeter (DSC). The specific heat capacity of the silica nanocomposite (solid phase) was enhanced by 38–54% and the specific heat of the silica nanofluid (liquid phase) was enhanced by 118–124% over that of the pure eutectic. Electron microscopy of the samples shows that the nanoparticles induce phase change (forms a higher density “compressed phase”) within the solvent material. Hence, a new model is proposed to account for the contribution of the compressed phase to the total specific heat capacity of the nanomaterials. The proposed model is found to be in good agreement with the experimental data. These results have wide ranging implications, such as for the development of efficient thermal storage systems that can enable significant reduction in the cost of solar thermal power.

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