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Journal articles on the topic 'Specific heat capacities'

Author: Grafiati

Published: 4 June 2025

Last updated: 23 June 2025

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1

Onderka, B., A. Sypien, A. Wierzbicka-Miernik, T. Czeppe, and L. A. Zabdyr. "Specific Heat Capacities of Some Ternary Aluminides." Journal of Phase Equilibria and Diffusion 32, no. 1 (2010): 39–41. http://dx.doi.org/10.1007/s11669-010-9822-5.

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2

SHI, X. H., G. L. MA, Y. G. MA, X. Z. CAI та J. H. CHEN. "“TEMPERATURE” FLUCTUATION AND HEAT CAPACITIES OF QUARKS AND π MESON". International Journal of Modern Physics E 16, № 07n08 (2007): 1912–16. http://dx.doi.org/10.1142/s0218301307007222.

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Specific heat capacities of π meson and different quarks after parton cascade AMPT model in Au + Au collisions at [Formula: see text] have been tentatively extracted from the event-by-event temperature fluctuations in the region of low transverse mass. The specific heat capacity of π meson shows a slight dropping trend with increasing impact parameter. The specific heat capacities of different quarks increase with the mass of quark, and the sum of up and down quark's specific heat capacities was found to be approximately equal to that of π meson.

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3

Morad, N. A., M. Idrees, and A. A. Hasan. "Specific heat capacities of pure triglycerides by heat-flux differential scanning calorimetry." Journal of Thermal Analysis 45, no. 6 (1995): 1449–61. http://dx.doi.org/10.1007/bf02547438.

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4

Uddin, Kutub, Md Amirul Islam, Sourav Mitra, et al. "Specific heat capacities of carbon-based adsorbents for adsorption heat pump application." Applied Thermal Engineering 129 (January 2018): 117–26. http://dx.doi.org/10.1016/j.applthermaleng.2017.09.057.

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5

Bobzin, K., C. Kalscheuer, M. Carlet, and J. Janowitz. "Specific heat capacity of chromium aluminum based nitride and oxynitride hard coatings." Materialwissenschaft und Werkstofftechnik 55, no. 2 (2024): 240–46. http://dx.doi.org/10.1002/mawe.202300147.

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AbstractIn simulation for machining processes, temperature dependent properties and their exact specification are important for application oriented results. For calculation of coated tools and components, interest in thermophysical properties of hard coatings is increasing. A methodical approach is used to measure the specific heat capacity of nitride and oxynitride hard coatings deposited by physical vapor deposition. The coating is converted into powdery state and measured by differential scanning calorimetry. Heat capacities for Cr44Al5N51 and two oxynitride Cr40Al5O18N37 and Cr44Al8O28N21 coatings were measured from T=200 °C to T=900 °C, technically relevant in tribological applications and manufacturing technology. The measured heat capacities showed reproducible results between cp ≈0.38 J/gK and cp ≈0.78 J/gK and dependency on the chemical composition of the coatings. The coating with highest non‐metal to metal ratio exhibited the highest heat capacity. The coating with highest oxygen content and lowest non‐metal to metal ratio showed the lowest heat capacity. Hard coatings and their thermophysical properties can affect heat transfer in industrial processes. Knowledge of these properties is necessary for process control by temperature sensor coatings or temperature dependent simulations. With measured values of heat capacities of physically vapor deposited hard coatings separated from the substrate, coatings can be adapted for use in application.

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6

Chen, Chen Tung A. "High-pressure specific heat capacities of pure water and seawater." Journal of Chemical & Engineering Data 32, no. 4 (1987): 469–72. http://dx.doi.org/10.1021/je00050a026.

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7

Wang, S., X. M. Jiang, Q. Wang, et al. "Research of specific heat capacities of three large seaweed biomass." Journal of Thermal Analysis and Calorimetry 115, no. 3 (2013): 2071–77. http://dx.doi.org/10.1007/s10973-013-3141-0.

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8

Sway, K., Jamey K. Hovey, and Peter R. Tremaine. "Apparent molar heat capacities and volumes of alkylbenzenesulfonate salts in water: substituent group additivity." Canadian Journal of Chemistry 64, no. 2 (1986): 394–98. http://dx.doi.org/10.1139/v86-063.

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Densities and specific heats were measured for the aqueous sodium salts of benzenesulfonate, p-toluenesulfonate, 2,4- and 2,5-dimethylbenzenesulfonate, mesitylenesulfonate, and p-ethylbenzenesulfonate. The limiting partial molar volumes, [Formula: see text] and heat capacities, [Formula: see text], lead to revised values in the group contributions for aromatic —CH2— and —CH3 groups in the additivity scheme proposed by Perron and Desnoyers. The heat capacities of substituted alkylbenzenes can deviate from group additivity by as much as 70 and 40 J K−1 mol,−1, respectively, when polar groups are located on the α and β positions of the alkyl chain.

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9

Günther, D., and F. Steimle. "Mixing rules for the specific heat capacities of several HFC-mixtures." International Journal of Refrigeration 20, no. 4 (1997): 235–43. http://dx.doi.org/10.1016/s0140-7007(97)00015-7.

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10

Joseph Gordian Atat, Joseph Gordian Atat, Emmanuel Bassey Umoren, Sunday Samuel Ekpo, and Unyime Akpan Umoette. "DETERMINATION OF SPECIFIC HEAT CAPACITIES OF LIQUIDS FROM SOME CONSUMABLE ITEMS." Journal of Advanced Research in Medical and Health Science (ISSN 2208-2425) 10, no. 4 (2024): 47–56. http://dx.doi.org/10.61841/e1sv7p88.

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This study was done to obtain the Specific Heat Capacities (SHC) of some liquids from some intake items (they are consumed widely in Niger Delta, Nigeria). These items are vegetables (Afang leaf, Pumpkin leaf, Bitter leaf, Scent leaf, Water leaf), fruits (Orange, Cucumber, Pineapple, Watermelon, Lime) and juice (Ribena, Chivita Exotic, Chivita Happy Hour, Chivita Active and Five Alive). Calorimeter was used and Method of mixtures was adopted for this finding. Measured parameters were obtained in the laboratory. Microsoft Excel was used for other analyses and computation of results.

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11

Shao, Chongkun, Peilun Wang, Ji Mi, Pengfei Jiang, Yongsheng Guo, and Wenjun Fang. "Distributed measurement of isobaric specific heat capacities for endothermic hydrocarbon fuels." Energy Conversion and Management 341 (October 2025): 120048. https://doi.org/10.1016/j.enconman.2025.120048.

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12

Liu, Na Na, Jian Lin Sun, and Di Wu. "Elastic Constants and Thermodynamic Properties of Cu, Cu₂O and CuO from First-Principles Calculations." Advanced Materials Research 335-336 (September 2011): 328–32. http://dx.doi.org/10.4028/www.scientific.net/amr.335-336.328.

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Elastic constants and some thermodynamic properties of Cu and copper oxides were studied by first-principles total energy calculations. The elastic constants of Cu and copper oxides were calculated on pressure. It was shown that the calculated elastic constants of Cu, Cu2O and CuO at zero pressure were well consistent with previous experimental data. The specific heat capacities and thermal expansion coefficient of Cu and copper oxides were successfully obtained. The calculated specific heat capacities of Cu were well consistent with the previous experimental data.

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13

Ambrozhevich, Maya Vladimirovna, and Mikhail Anatol'evich Shevchenko. "EQUATIONS OF AVERAGE ISOBARIC HEAT CAPACITY OF AIR AND COMBUSTION GASES WITH INFLUENCE OF PRESSURE AND EFFECT OF THERMAL DISSOCIATION." Aerospace technic and technology, no. 2 (April 22, 2019): 18–29. http://dx.doi.org/10.32620/aktt.2019.2.02.

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All properties of thermomechanical systems working substance are two-parameter that is determined by two parameters, the most often they are temperature and pressure which are easily measured by experiment. Representing the isobaric heat capacity as a function of temperature cp = f(T) become a thing of the past. Analytical and tabular ways are used to represent dependencies as a function of temperature and pressure. The tabular method is convenient for single calculations, but the analytical one is more convenient for a series of calculations. The advantages of an analytical description in comparison with a tabular one are obvious, namely, compactness of information storage without reference to node points, the ability to integrate and differentiate, dependencies can be embedded directly in the program body and don’t require special subroutines to access to the tables. Developers of the programs for calculating thermophysical properties, as a rule, use functional dependencies which may have a different appearance for temperature and pressure intervals of the same substance. This is explained by the fact that in the region close to the saturation curve, there is a steep change in all the thermophysical properties of substances including the isobaric heat capacity. In thermogasdynamic calculations of heat machines, the main physical parameter of the working fluid is its heat capacity, both true and average. The article presents the analytical dependencies of the average specific isobaric heat capacities of the main components of air and combustion products of hydrocarbon fuels which are united throughout the specified range of pressures and temperatures (nitrogen: p = 1 ... 200 bar, T = 150 ... 2870 K, oxygen: p = 1 ... 200 bar, T = 210 ... 2870 K, argon: p = 1 ... 200 bar, T = 190 ... 1300 K, the water vapor: p = 0,1 ... 200 bar, T = 700 ... 2600 K, carbon dioxide: p = 1 ... 200 bar, T = 390 ... 2600 K). The analytical dependencies were derived on the basis of previously obtained analytical expressions for the specific isobaric heat capacities of these gases. The average specific isobaric heat capacities of gases are also functions of temperature and pressure cp = f(T, P) and take into account the effect of thermal dissociation. Formulas for average specific isobaric heat capacities are obtained by integrating expressions for specific isobaric heat capacities. Verification of the obtained dependencies for different temperature ranges was done.

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14

Mamedov, Bahtiyar A., Elif Somuncu, and Iskender M. Askerov. "Evaluation of Speed of Sound and Specific Heat Capacities of Real Gases." Journal of Thermophysics and Heat Transfer 32, no. 4 (2018): 984–98. http://dx.doi.org/10.2514/1.t5285.

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15

Hu, J., Z. Li, J. Shi, J. Xue, Y. Long, and R. Ye. "Excellent Mechanical Properties and Specific Heat Capacities of Multiphase Er3+xNi Alloys." IEEE Transactions on Magnetics 51, no. 11 (2015): 1–3. http://dx.doi.org/10.1109/tmag.2015.2440313.

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16

Flandorfer, Hans, and Herbert Ipser. "Specific heat capacities of alloys of the non-stoichiometric GaNi3±x phase." Intermetallics 11, no. 10 (2003): 1047–51. http://dx.doi.org/10.1016/s0966-9795(03)00133-x.

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17

Feng, Song, Qincheng Bi, Hui Pan, and Zhaohui Liu. "Isobaric specific heat capacities of emulsified kerosene at high temperature and pressure." Thermochimica Acta 665 (July 2018): 127–33. http://dx.doi.org/10.1016/j.tca.2018.04.018.

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18

Wada, Brandon C., Oliver W. M. Baldwin, and Gerald R. Van Hecke. "Heat–Cool: A Simpler Differential Scanning Calorimetry Approach for Measuring the Specific Heat Capacity of Liquid Materials." Thermo 3, no. 4 (2023): 537–48. http://dx.doi.org/10.3390/thermo3040032.

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Specific heat capacity at constant pressure cp (J K−1 g−1) is an important thermodynamic property that helps material scientists better understand molecular structure and physical properties. Engineers control temperature (through heat transfer) in physical systems. Differential Scanning Calorimetry (DSC) is an analytical technique that has been used for over fifty years to measure heat capacities with milligram size samples. For existing procedures, such as ASTM E1269−11 (2018), the accuracy of molar heat capacity measurements is typically ±2–5% relative to the literature values, even after calibration for both heat flow and heat capacity. A comparison of different DSC technologies is beyond the scope of this paper, but the causes of these deviations are common to all DSC instruments, although the magnitude of the deviation (observed and accepted) varies with instrument design. This paper presents a new approach (Heat–Cool) for measuring more accurate and reproducible specific heat capacities of materials. In addition to better performance, the proposed method is faster and typically requires no additional calibration beyond the routine calibration of temperature and heat flow, with melting point standards common to all applications of DSC. Accuracy, as used throughout this paper, means deviation from the literature. The estimated standard deviation of repeated measurements of the cp values obtained with the Heat–Cool technique typically falls in the ±1–2% range.

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19

Travnicek, Petr, and Ivan Vitázek. "Uncertainty estimation of the mean specific heat capacity for the major gases contained in biogas." Research in Agricultural Engineering 66, No. 2 (2020): 52–59. http://dx.doi.org/10.17221/4/2020-rae.

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The paper is focused on the uncertainty estimation of the mean isobaric and isochoric specific heat capacity calculation. The differences in the data among the individual sources for the technical calculation are presented in the first part of the paper. These differences are discussed in this paper. Research of scientific work with listed values of measurement uncertainties has been carried out in the second part of the paper. Furthermore, mathematical models were calculated which describe the dependence of the specific heat capacities and temperature. The maximal error models were carried out. Two approaches were used for the calculation of the mean specific heat capacity. The first approach is the calculation with help of integration of the function which describes the dependence of the specific heat capacity and temperature. The second approach is the calculation of a simple arithmetic mean of the specific heat capacity related to the maximal and minimal value of the temperature interval. The conclusion of the work shows that the time-effective second way is applicable in the case of a narrow temperature range. A value of 5.5% (Δ<sub>t</sub> = 200 K) was reached for the relative uncertainty. This is a similar value to that in the case of using the first way.

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20

Adekoya, M. A., A. O. Adelakun, A. A. Faremi, and S. S. Oluyamo. "Thermal Response at Room Temperature and Device Applications of Two Wood Species in Akure, South Western Nigeria." Nigeria Journal of Pure and Applied Physics 10, no. 1 (2021): 12–15. http://dx.doi.org/10.4314/njpap.v10i1.3.

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Thermal properties (Density, Thermal conductivity and Specific heat capacity) play important impact in the formation of devicesmade of wooden materials. This study examines the room temperature thermal response of ten bulk samples from the species of Pterygota macrocarpa and Antiaris africana wood species found in South Western Nigeria. The samples were processed into appropriate shapes to fit into the parallel plane arrangement to determine the thermal properties. Temperature dependent models were used to obtain the specific heat capacities of the samples within a temperature variation of 308.25𝐾 - 310.00𝐾. The results revealed that the thermal properties (thermal conductivities and specific heat capacities) increase as temperature increases for all the bulk samples considered. The results of the research showed that the selected wood samples could find useful applications in industrial insulating devices. Keywords: Wood material, Lee’s disc apparatus, Temperature and Thermal properties.

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21

Semmar, N., J. L. Tanguier, and M. O. Rigo. "Analytical expressions of specific heat capacities for aqueous solutions of CMC and CPE." Thermochimica Acta 419, no. 1-2 (2004): 51–58. http://dx.doi.org/10.1016/j.tca.2004.01.030.

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22

Tyunina, Elena Yu, and Anna A. Kuritsyna. "HEAT CAPACITY PROPERTIES OF AQUEOUS BUFFER SOLUTIONS OF L-HISTIDINE IN A WIDE TEMPERATURE RANGE." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 62, no. 11 (2019): 78–84. http://dx.doi.org/10.6060/ivkkt.20196211.6082.

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The influence of temperature and concentration of L-histidine on the heat capacity properties of its aqueous buffer solutions was studied by differential scanning calorimetry. The investigations were carried out in aqueous buffer solutions (pH 7.4) containing monobasic sodium phosphate and dibasic sodium phosphate, which brings the environment closer to the conditions of real biological systems. The pH values of the solutions were fixed with a digital pH meter Mettler Toledo, model Five-Easy (Switzerland). The differential scanning microcalorimeter SCAL-1 (Biopribor, Pushchino, Russia) was used for measure the specific heat capacity of the system under study. It was equipped with Peltier thermoelectric elements, two measuring glass cells with an internal volume of 0.377 cm3, as well as a computer terminal and software for calculating heat capacity. The standard error of measurement of the specific heat for the studied solutions was within ±7·10-3 J·K-1·g-1. The experimental values of the specific heat of solutions of the amino acid in a phosphate buffer solvent in the temperature range (283.15 – 343.15) K were obtained. The concentration of histidine was varied from (0.00215 to 0.03648) mol·kg-1. All the studied solutions were prepared by the gravimetric method using Sartorius-ME215S scales (with a weighing accuracy of 1·10-5 g). The apparent molar heat capacities of L-histidine in the buffer solution, as well as its partial molar heat capacities at infinite dilution, were determined. The calculated molar parameters increase with an increase in both temperature and amino acid concentration. It was shown that the partial molar heat capacities transfers of L-histidine from water to the buffer solution have positive values in the temperature range studied. The results are discussed on base of the Gurney model.

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23

Liu, Caixi, Shuai Tang, and Yuhong Dong. "Effect of inertial particles with different specific heat capacities on heat transfer in particle-laden turbulent flow." Applied Mathematics and Mechanics 38, no. 8 (2017): 1149–58. http://dx.doi.org/10.1007/s10483-017-2224-9.

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24

Mustarelli, Piercarlo, and Corrado Tomasi. "Heat Capacities of Thermally Treated Na2O-3B2O3 Glasses Above and Below Tg." Zeitschrift für Naturforschung A 51, no. 3 (1996): 187–91. http://dx.doi.org/10.1515/zna-1996-0309.

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Various contributions have been obtained from the heat capacities of "as quenched" and annealed Na2O - 3B2O3 glasses. It is shown that the enthalpic release gives a major contribution to the DSC curves obtained by reheating quenched glasses. Different relaxation processes are followed by comparing DSC scans of quenched and annealed samples in the vitreous state and around the glass transition temperature, Tg. As a function of the annealing time at T = T8 - 30 °C, the specific heats at room temperature initially increase, due to the decrease of the exothermic contribution from quenched-in defects, which are absent in a fully annealed glass; over a month-long time scale these heat capacities drop, due to a partial ordering, which decreases the configurational contribution. Such a decrease is related with the "overshoot" which occurs above and which attains a limiting value ΔHg ≅ 14 J mol-1 in a matter of days. The heat capacities above Tg relax towards a value of CP of ≅ 2.3 J mol-1 K-1 after a few days of annealing, which is intermediate between the anomalously low CP (∼ 1.8 J mol-1 K-1 ) of a fast quenched (∼103 K min-1 ) and that ( ∼ 2 . 9 J mol-1 K-1 ) of a sample annealed for one hour. These phenomena point to complex relationships among enthalpic relaxation, entropic relaxation and temperature in these glasses

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25

Getachew, Kuma Watiro. "Determination of the Specific Heat Capacities of car engine oil (Deo Max (DM7)/ 15W-40(oilibya)) and defreins brake fluid (total HBF 4 liquid) at low temperature (26-35oC) by using Calorimeter." J. of Advancement in Engineering and Technology 7, no. 3 (2020): 06. https://doi.org/10.5281/zenodo.3751590.

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The purpose of this study is to determine the specific heat capacities of car oils at low temperature (26-35oC). I used experimental method, setting my procedure and analysis the data by using excel and draw graphs by using MATLAB. I used water as the standard mean that first I tried to determine the specific heat capacity of water using colorimeter which is 4184J/kg oc but I determined 4020J/kg oc which is an error around 3.91% this has right to continue my experiment to the next oils by using the same ways.  I obtained the specific heat capacity of Deo max 7 and HBF 4 is 4.4736 and 6.8556 J/kgoc respectively. Not all engine oils are suitable for engines. Owing the specific heat capacity of the oils is very important because increase the performance of engine as it increases temperature.

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26

Couture, Lorraine, Jacques E. Desnoyers, and Gérald Perron. "Some thermodynamic and transport properties of lithium salts in mixed aprotic solvents and the effect of water on such properties." Canadian Journal of Chemistry 74, no. 2 (1996): 153–64. http://dx.doi.org/10.1139/v96-019.

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In a continuing study on the optimization of the electrolyte medium for high-energy lithium batteries, volumes, heat capacities, and specific conductivities of LiClO4 and LiBr were measured in mixtures of γ-butyrolactone (BUTY) and 1,2-dimethoxyethane (DME) and of propylene carbonate (PC) and BUTY. These results are compared with those of the electrolytes in the pure solvents. Phase diagrams are also reported when appropriate. The effect of addition of water to these binary and ternary systems was investigated with the same techniques. The mixtures DME–BUTY, PC–DME, DME–H2O, and BUTY–H2O are typical of mixtures of aprotic solvents and mixtures of aprotic solvents and water. The electrolytes at high concentrations in aprotic solvents of low dielectric constants are largely associated. The medium still conducts electrolytically since the ion pairs are in a state that resembles to a large extent that of a molten salt. With some systems at high concentration, stable solvates persist in the solution medium, as evidenced mostly by heat capacities, and are in equilibrium with either the excess solvent or unsolvated molten salts. In mixed solvents, the properties of electrolytes can largely be predicted from the binary systems and by the coexistence of these solvates. The properties of water in DME, BUTY, or mixtures of the two solvents are modified significantly in the presence of LiBr but only slightly with LiClO4. These specific interactions, which affect the heat capacities much more than the volumes and which are especially large with the system LiBr–DME, could be responsible for the decrease in reactivity of water with lithium metal in an aprotic medium in the presence of certain electrolytes. Key words: LiClO4, LiBr, γ-butyrolactone, dimethoxyethane, propylene carbonate, lithium battery, aprotic solvent, water, association, solvates, solid–liquid phase diagrams, volumes, heat capacities, specific conductivities.

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27

Uy, Robert Frederik, Qiaozi Miao, and Chenghao Yuan. "Bimetallic ammeter: a novel method of current measurement." Emergent Scientist 4 (2020): 2. http://dx.doi.org/10.1051/emsci/2020001.

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An electric current flowing through a bimetallic coil heats it up, and due to thermal expansion, the coil either unwinds or winds depending on the direction of net heat transfer and the specific heat capacities of the metals used. This means that by relating a certain measure of its mechanical displacement with current, the bimetallic coil can be used as an ammeter. Thus, a mathematical model relating the current to the time taken by the bimetallic coil to unwind a fixed displacement was developed and verified through experiments, which show a good agreement between theoretical and experimental values.

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28

Lewins, J. D. "The ideal gas Joule cycle at maximum specific work." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 214, no. 12 (2000): 1545–51. http://dx.doi.org/10.1243/0954406001523470.

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The condition for maximum specific work from a gas-turbine engine operated on a Joule cycle is generalized to ideal gases from the well-known result obtained by using a perfect gas. An obvious corollary is shown to be the principal theorem, when the working substance is an ideal gas with specific heat capacities varying with temperature, that the turbine outlet and compressor outlet temperatures are equal. Two additional corollaries are shown to hold in general. A simple study shows that the optimum condition point is not much affected by real departures from reversible behaviour. The condition for which a regenerative heat exchanger is then desirable is found. The results are generalized to any gas for which the enthalpy is a function of temperature only.

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29

Akamatsu, Masato, Kaoru Yasuhara, Ikuo Osaka, Shinya Usui, and Mitsuo Higano. "Specific Heat Capacities of K-Type Thermocouple Materials in the Temperature Range 304K-574K." Netsu Bussei 27, no. 2 (2014): 69–76. http://dx.doi.org/10.2963/jjtp.27.69.

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30

Rifert, V. G., L. I. Anatychuk, A. S. Solomakha, P. O. Barabash, V. G. Petrenko, and O. P. Snegovskoy. "Influence of thermodynamic characteristics of a thermoelectric heat pump on the performance and energy consumption of a centrifugal distiller." Journal of Thermoelectricity, no. 2 (June 23, 2021): 5–17. https://doi.org/10.63527/1607-8829-2021-2-5-17.

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The paper analyzes the operation of a thermoelectric heat pump in combination with a centrifugal distiller for the regeneration of wastewater from a human life system in the conditions of future long-term space missions. The time dependence of the specific energy consumption of the system at different capacities of the heat pump is shown, the influence of the temperature difference of the heat carriers on the efficiency of the heat pump is analyzed. Bibl. 24, Fig. 5, Tabl. 2.

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31

Pejovic, Branko, Ljubica Vasiljevic, Vladan Micic, and Mitar Perusic. "Suitable model for the calculation of the correlation between the real and the average specific heat capacity and possibilities of its application." Chemical Industry 67, no. 3 (2013): 495–511. http://dx.doi.org/10.2298/hemind111104092p.

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Starting from the definition of the average specific heat capacity for chosen temperature range, the analytic dependence between the real and the mean specific heat capacities is obtained using differential and integral calculation. The obtained relation in differential form for the defined temperature range allows for the problem to be solved directly, without any special restrictions on its use. Using the obtained relation, a general model in the form of a polynomial of arbitrary degree in the function of temperature was derived, which has more suitable and faster practical application and is more general in character than the existing model. New graphical method for solving the problem is obtained based on differential geometry and using the derived equation. This may also have practical significance since many problems in thermodynamics are solved analytically and graphically. This result was used in order to obtain the amount of specific heat exchanged using an analytical model or a planimetric method. In addition, this graphical solution was used for the construction of the diagram showing the dependence between the specific heat exchanged and temperature. This diagram also gives a simple graphical procedure for the calculation of the real and the average specific heat capacity for arbitrary temperature or temperature interval. The confirmation for all graphic constructions is obtained using the differential properties between thermodynamic units. In order for the graphical solutions presented to be applicable in practice, suitable ratio coefficients have been determined for all cases. Verification of the model presented, as well as the possibilities of its application, were given using several characteristic examples of semi-ideal and real gas. Apart from linear and non-linear functions in the form of polynomials, the exponential function of the dependence between specific heat capacities and temperature was also analysed in this process.

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32

Hassan, Umar, Adeleke Waliyi Adekola, Mohammed Mohammed, Adamu Muhammad Auwal, and Sanusi Abdulganiyu. "EVALUATION OF THERMAL STORAGE CAPACITIES OF SOME SELECTED MATERIALS FOR SOLAR DRYING APPLICATIONS." FUDMA JOURNAL OF SCIENCES 4, no. 3 (2020): 192–96. http://dx.doi.org/10.33003/fjs-2020-0403-301.

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This work aimed at evaluating the thermal storage capacities of granite grits, laterite rock, sand, laterite, and Clay for solar drying applications. The sample materials were ground and sieved through 0.425mm British Standard sieve. The thermal conductivity, specific heat capacity, bulk density and melting point of the materials were determined. The results showed that Clay displayed better potentiality as thermal storage material with the highest thermal conductivity and specific heat capacity of 2.16 W/m oC and 1.398 kJ/kg K respectively. Laterite was observed to be the least with 1.07 W/moC, and 0.499 kJ/kg K respectively. The Sand was observed to have higher bulk density compared with other sample materials while Laterite exhibited the lowest. The analysis of the result indicates that clay could be used as material for thermal energy storage facility in solar drying applications.

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33

Joshi, Narendra S., Govinda P. Waghulde, and Gaurav R. Gupta. "Thermo-physical Investigations of oils, N-(2-aminoethyl)oleamide and Resulting Gels using TGA-DSC." Oriental Journal Of Chemistry 37, no. 6 (2021): 1496–500. http://dx.doi.org/10.13005/ojc/370632.

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Edible vegetable oils were gelled by using N-(2-aminoethyl)-oleamide. Oils in their free state were subjected to differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) analysis. The gels of these oils were prepared by using N-(2-aminoethyl)-oleamide as gelator and similar thermal analysis of the gels was carried out. The thermal analysis data obtained was used to determine specific heat capacity at constant pressure (Cp). The values were compared with the reported values of heat capacities. It is observed that the thermal properties and transitions of oils and gels, specific heat capacity is helpful parameter to understand the fundamentals of gels and gelation strategies.

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Ahrens, M., R. Merkle, B. Rahmati, and J. Maier. "Effective masses of electrons in n-type SrTiO3 determined from low-temperature specific heat capacities." Physica B: Condensed Matter 393, no. 1-2 (2007): 239–48. http://dx.doi.org/10.1016/j.physb.2007.01.008.

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Feng, Zhi-Cun, Ming-Yang Du, Lian-Jie Zhai, Kang-Zhen Xu, Ji-Rong Song, and Feng-Qi Zhao. "Hermetic thermal behaviors and specific heat capacities of bis(aminofurazano)furazan and bis(nitrofurazano)furazan." Journal of Thermal Analysis and Calorimetry 133, no. 3 (2018): 1379–85. http://dx.doi.org/10.1007/s10973-018-7242-7.

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Alozie, Diké-Michel, Philippe Courtes, Benjamin Ha, and Denis Prat. "Determination of Accurate Specific Heat Capacities of Liquids in a Reaction Calorimeter, by Statistical Design." Organic Process Research & Development 15, no. 6 (2011): 1412–19. http://dx.doi.org/10.1021/op200093b.

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Luo, Chunhuan, Qingquan Su, and Wanliang Mi. "Solubilities, Vapor Pressures, Densities, Viscosities, and Specific Heat Capacities of the LiNO3/H2O Binary System." Journal of Chemical & Engineering Data 58, no. 3 (2013): 625–33. http://dx.doi.org/10.1021/je301084m.

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38

Al-Shaar, Walid, Olivier Bonin, Bernard de Gouvello, Patrice Chatellier, and Martin Hendel. "Geographically Weighted Regression-Based Predictions of Water–Soil–Energy Nexus Solutions in Île-de-France." Urban Science 6, no. 4 (2022): 81. http://dx.doi.org/10.3390/urbansci6040081.

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Due to global urbanization, urban areas are encountering many environmental, social, and economic challenges. Different solutions have been proposed and implemented, such as nature-based solutions and green and blue infrastructure. Taking into consideration exogenous factors that are associated with these solutions is a crucial question to assess their possible effects. This study examines the possible explanatory factors and their evolution until the year 2054 of several solutions in the Île-de-France region: wastewater heat-recovery, surface geothermal energy, and heat-mitigation capacities of zones. This investigation is performed by a series of statistical models, namely the ordinary least squares (OLS) and the geographically weighted regressions (GWR), integrated within a geographic information system. The main driving factors were identified as land use/land cover and population distribution. The results show that GWR models capture a large part of spatial autocorrelation. Apropos of prediction results, areas with low, medium, and high potential for implementing specific solutions are determined. Furthermore, the implementation capacities of solutions are compared with the demand depicted as the need for slowing down the effects of surface urban heat islands and the dependence on fossil energy. Moreover, the heat mitigation capacities are not at all times distinctively linked to human activities. Further investigations are needed to discover the remaining possible reasons, particularly air quality, water, vegetation, and climate change.

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Makarenko, Konstantin I., Oleg N. Dubinin, and Igor V. Shishkovsky. "Linear Thermal Expansion and Specific Heat Capacity of Cu-Fe System Laser-Deposited Materials." Metals 13, no. 3 (2023): 451. http://dx.doi.org/10.3390/met13030451.

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The coefficient of linear thermal expansion and the specific heat capacity of laser-deposited Cu-Fe alloys fabricated from tin, aluminum, chromium bronze (89–99 wt.% Cu), and SS 316L were studied. The investigated alloys had a 1:1 and a 3:1 bronze–steel ratio. The Al–bronze-based alloy showed the lowest value of linear thermal expansion coefficient: (1.212 ± 0.095)∙10−5 K−1. Contrarily, this value was the highest {[(1.878–1.959) ± 0.095]∙10−5 K−1} in the case of functionally graded parts created from alternating layers of bronze and steel. Differential scanning calorimetry provided experimental results about the specific heat capacity of the materials. In the case of Al–bronze-based specimens, it demonstrated a decrease in the specific heat capacity until ~260 °C and its further increase during a heating cycle. Exothermic peaks related to polymorphic transformations were observed in the Al–bronze-based specimens. Cooling cycles showed monotonous behavior for specific heat capacities. It had exothermic peaks in the case of Cr–bronze-based alloys. A Lennard-Jones potential equation was used for testing the relation between heat capacity and thermal expansion. A three-way interaction regression model validated the results and provided the relative thermal expansion of commercially pure DED-fabricated SS 316L. Its specific heat capacity was also studied experimentally and was 15–20% higher in comparison to the traditional method of production.

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Abaszade, R. G., E. M. Aliyev, A. G. Mammadov, et al. "Investigation of thermal properties of gadolinium doped carbon nanotubes." Physics and Chemistry of Solid State 25, no. 1 (2024): 142–47. http://dx.doi.org/10.15330/pcss.25.1.142-147.

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Thermal properties characterizations for 10% and 15% Gd doped multi wall carbon nanotubes (MWCNTs) were investigated. TGA/DSC and TEM techniques were used for characterization. The features of mass loss characteristics for synthesized nanocomposite carbon nanomaterials were investigated. The specific heat capacities of the samples at a constant pressure increased as the temperature increased.

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Morad, N. A., M. Idrees, and A. A. Hasan. "Improved conditions for measurement of the specific heat capacities of pure triglycerides by differential scanning calorimetry." Journal of Thermal Analysis 44, no. 4 (1995): 823–35. http://dx.doi.org/10.1007/bf02547267.

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Santos, J. C. O., M. G. O. Santos, J. P. Dantas, Marta M. Conceição, P. F. Athaide-Filho, and A. G. Souza. "Comparative study of specific heat capacities of some vegetable oils obtained by DSC and microwave oven." Journal of Thermal Analysis and Calorimetry 79, no. 2 (2005): 283–87. http://dx.doi.org/10.1007/s10973-005-0050-x.

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43

van Ekeren, P. J., L. D. Ionescu, V. B. F. Mathot, and J. C. van Miltenburg. "Specific heat capacities and thermal properties of a homogeneous ethylene-1-butene copolymer by adiabatic calorimetry." Thermochimica Acta 391, no. 1-2 (2002): 185–96. http://dx.doi.org/10.1016/s0040-6031(02)00176-4.

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Tendera, Luca, Gerrit Karl Mertin, Carlos Gonzalez, Dominik Wycisk, Alexander Fill, and Kai Peter Birke. "Comprehensive Analysis of Parametric Effects on the Specific Heat Capacity of Pristine and Aged Lithium-Ion Cells." Energy Storage and Applications 1, no. 1 (2024): 35–53. https://doi.org/10.3390/esa1010004.

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The precise determination of the specific heat capacity of lithium-ion cells is essential for thermal management design. Though, varying influences and insufficient parametric analyses are found in the literature. Therefore, a simple and inexpensive measurement setup is utilized to measure the specific heat capacity of cells independent of their format and dimensions. A comprehensive parametric analysis is performed assessing the effect of cell casing, cell chemistry, temperature, state-of-charge, and state-of-health. For the first time ever, a predictive analysis on material level is conducted allowing for understanding the individual factors in detail. Thus, an analytical approach for calculating the specific heat capacity can be validated by comparing predictive values to experimental data for the first time. It is found that the cell format has a significant influence on the specific heat capacity due to varying mass fractions and housing materials. Furthermore, the cell chemistry and corresponding layer thicknesses are of high importance, too. By selecting specific heat capacities for individual materials from the general literature, the analytical prediction matches the experimental data and is thus validated for the first time ever. Moreover, temperature has a positive linear effect on the specific heat capacity which can increase by up to 15% over the operating range. Furthermore, the positive temperature dependency improves the charging performance. Finally, neither SOC nor SOH significantly affect the specific heat capacity of lithium-ion cells.

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Lewins, Jeffery D. "Optimising an Intercooled Compressor for an Ideal Gas Model." International Journal of Mechanical Engineering Education 31, no. 3 (2003): 189–200. http://dx.doi.org/10.7227/ijmee.31.3.1.

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Many of the conventional results obtained when optimising the performance of an intercooler during compression using a perfect gas model can be obtained when the restrictions of the model are relaxed to an ideal gas. That is, we now have temperature-dependent specific heat capacities but retain the equation of state pV = RT. This note illustrates the theme.

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Abaszade, R. G., E. M. Aliyev, M. B. Babanli, et al. "Investigation of thermal properties of carbon nanotubes and carboxyl group - functionalized carbon nanotubes." Physics and Chemistry of Solid State 24, no. 3 (2023): 530–35. http://dx.doi.org/10.15330/pcss.24.3.530-535.

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Thermal properties characterizations for carbon nanotubes (CNTs), carboxyl group-functionalized carbon nanotubes (FCNT), and graphite were presented in the paper. TGA/DSC and TEM techniques were used for characterization. The features of TGA characteristics transformation for synthesized carbon nanomaterials were investigated. The specific heat capacities of the samples at a constant pressure increased as the temperature increased.

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Lu, Xiaojia, Yanjun Wang, Lionel Estel, Narendra Kumar, Henrik Grénman, and Sébastien Leveneur. "Evolution of Specific Heat Capacity with Temperature for Typical Supports Used for Heterogeneous Catalysts." Processes 8, no. 8 (2020): 911. http://dx.doi.org/10.3390/pr8080911.

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Heterogeneous catalysts are widely used in the chemical industry. Compared with homogeneous catalysts, they can be easily separated from the reaction mixture. To design and optimize an efficient and safe chemical process one needs to calculate the energy balance, implying the need for knowledge of the catalyst’s specific heat capacity. Such values are typically not reported in the literature, especially not the temperature dependence. To fill this gap in knowledge, the specific heat capacities of commonly utilized heterogeneous catalytic supports were measured at different temperatures in a Tian–Calvet calorimeter. The following materials were tested: activated carbon, aluminum oxide, amberlite IR120 (H-form), H-Beta-25, H-Beta-38, H-Y-60, H-ZSM-5-23, H-ZSM-5-280, silicon dioxide, titanium dioxide, and zeolite 13X. Polynomial expressions were successfully fitted to the experimental data.

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S. Musonye, Fenwicks, Hiram Ndiritu, and Robert Kinyua. "Modeling and simulation of heat balance and internal heat recovery targets through a combination of stream specific minimum temperature difference and polynomial temperature coefficients of specific heat capacities using pinch analysis." AIMS Energy 8, no. 4 (2020): 652–68. http://dx.doi.org/10.3934/energy.2020.4.652.

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49

Bhuiyan, Mohammad M. H., Andrew W. Hakin, and Jin Lian Liu. "Densities, Specific Heat Capacities, Apparent and Partial Molar Volumes and Heat Capacities of Glycine in Aqueous Solutions of Formamide, Acetamide, and N,N-Dimethylacetamide at T=298.15 K and Ambient Pressure." Journal of Solution Chemistry 39, no. 6 (2010): 877–96. http://dx.doi.org/10.1007/s10953-010-9540-y.

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Tukimon, Mohd Faizal, Wan Nur Azrina Wan Muhammad, M. Nor Anuar Mohamad, Nurhayati Rosly, and Norasikin Mat Isa. "Thermal Analysis of Quaternary Molten Nitrate Salts Mixture for Energy Recovery System." Key Engineering Materials 796 (March 2019): 74–79. http://dx.doi.org/10.4028/www.scientific.net/kem.796.74.

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Quaternary molten salt nitrate have been used very practically as medium for energy storage or heat transfer fluid in terms of energy recovery system. Quaternary molten salt nitrate is a mixture that can transfer heat to generate energy such as electricity. Mixed alkaline molten nitrate salt can act as a heat transfer fluid due to their advantageous in terms of heat recovery system due to high specific heat capacity, low vapour pressure, low cost and wide range of temperature in its application. This studies shows about determining the new composition of quaternary molten nitrate salts from different primary salts that can possibly give a high specific heat capacity with low melting point. The mixture of quaternary molten nitrate salts was then heated inside the box furnace at 150°C for four hours and rose up the temperature to 400°C for eight hours. Through heating process, the quaternary molten nitrate alkaline was completely homogenized. The temperature was then dropped to room temperature before removing the mixture from the furnace. The specific heat capacities of each sample were determined by using Differential Scanning Calorimeter, DSC. From the result of DSC testing, Sample 6 gives the highest point of specific heat capacity and low melting point which is 0.4648 J/g°C and 97.71°C respectively. In the nut shell, Sample 6 was chosen as a good mixture with good thermal properties that has a low melting point which is below 100°C but high specific heat capacity that may be a helpful in the application energy recovery system.

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