ISOCHORIC HEAT CAPACITY OF 1% AQUEOUS SOLUTION OF MAGNESIUM CHLORIDE
Aim. The aim is to conduct an experimental study of isochoric heat capacity of 1% aqueous solution of magnesium chloride along the phase boundary curve.Method. In order to determine the isochoric heat capacity at the phase boundary curve we used the adiabatic calorimeter of KH. I. Amirkhanov.Results...
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2016-07-01
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| Series: | Юг России: экология, развитие |
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| Online Access: | https://ecodag.elpub.ru/ugro/article/view/834 |
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| author | V. I. Dvoryanchikov D. K. Djavatov G. A. Rabadanov E. G. Iskenderov D. P. Shikhakhmedova |
| author_facet | V. I. Dvoryanchikov D. K. Djavatov G. A. Rabadanov E. G. Iskenderov D. P. Shikhakhmedova |
| author_sort | V. I. Dvoryanchikov |
| collection | DOAJ |
| description | Aim. The aim is to conduct an experimental study of isochoric heat capacity of 1% aqueous solution of magnesium chloride along the phase boundary curve.Method. In order to determine the isochoric heat capacity at the phase boundary curve we used the adiabatic calorimeter of KH. I. Amirkhanov.Results. Results of the study of the isochoric heat capacity depending on the temperature are given in tables and figures; the findings are compared with those of other researchers. When evaluating a complex system, we ought not to evaluate its effectiveness on the basis of only one criterion, even a very important, in this case must take into account the requirements of the technical, economic, environmental and of other natures.Conclusions. When solving optimization problems of efficiency in geothermal energy it is necessary to take into account the fact of the temperature dependence of the heat and density. The temperature dependence of the density and heat capacity in the calculations significantly affect the value of the efficiency criterion to be taken into account, otherwise the calculation error can be up to 20%. The data obtained from the isochoric heat capacity of aqueous solutions of magnesium chloride is compared with the data for water and aqueous solutions of NaCl and NaOH, obtained previously, which may be represented as a model of geothermal and sea water. |
| format | Article |
| id | doaj-art-fa2f0497092e4e3c91425becce27e7c5 |
| institution | Kabale University |
| issn | 1992-1098 2413-0958 |
| language | Russian |
| publishDate | 2016-07-01 |
| publisher | Kamerton |
| record_format | Article |
| series | Юг России: экология, развитие |
| spelling | doaj-art-fa2f0497092e4e3c91425becce27e7c52025-08-20T03:56:29ZrusKamertonЮг России: экология, развитие1992-10982413-09582016-07-0111212113110.18470/1992-1098-2016-2-121-131828ISOCHORIC HEAT CAPACITY OF 1% AQUEOUS SOLUTION OF MAGNESIUM CHLORIDEV. I. Dvoryanchikov0D. K. Djavatov1G. A. Rabadanov2E. G. Iskenderov3D. P. Shikhakhmedova4Laboratory of Thermophysics of geothermal systems, Institute of Geothermal Problems, Dagestan Scientific Center, Russian Academy of Sciences, Makhachkala, RussiaLaboratory of Energetics, Institute of Geothermal Problems, Dagestan Scientific Center, Russian Academy of Sciences, Makhachkala, RussiaLaboratory of physical chemistry of thermal waters, Institute of Geothermal Problems, Dagestan Scientific Center, Russian Academy of Sciences, Makhachkala, RussianLaboratory of low-grade heat and solar energy storage, Branch of the Joint Institute for High Temperatures of the Russian Academy of Sciences, Makhachkala, RussiaLaboratory of Thermophysics of geothermal systems, Institute of Geothermal Problems, Dagestan Scientific Center, Russian Academy of Sciences, Makhachkala, RussiaAim. The aim is to conduct an experimental study of isochoric heat capacity of 1% aqueous solution of magnesium chloride along the phase boundary curve.Method. In order to determine the isochoric heat capacity at the phase boundary curve we used the adiabatic calorimeter of KH. I. Amirkhanov.Results. Results of the study of the isochoric heat capacity depending on the temperature are given in tables and figures; the findings are compared with those of other researchers. When evaluating a complex system, we ought not to evaluate its effectiveness on the basis of only one criterion, even a very important, in this case must take into account the requirements of the technical, economic, environmental and of other natures.Conclusions. When solving optimization problems of efficiency in geothermal energy it is necessary to take into account the fact of the temperature dependence of the heat and density. The temperature dependence of the density and heat capacity in the calculations significantly affect the value of the efficiency criterion to be taken into account, otherwise the calculation error can be up to 20%. The data obtained from the isochoric heat capacity of aqueous solutions of magnesium chloride is compared with the data for water and aqueous solutions of NaCl and NaOH, obtained previously, which may be represented as a model of geothermal and sea water.https://ecodag.elpub.ru/ugro/article/view/834adiabatic calorimeterisochoric heat capacityphase equilibriaaqueous solutions of saltsgeothermal energyspecific volumethermocoupletemperature dependence |
| spellingShingle | V. I. Dvoryanchikov D. K. Djavatov G. A. Rabadanov E. G. Iskenderov D. P. Shikhakhmedova ISOCHORIC HEAT CAPACITY OF 1% AQUEOUS SOLUTION OF MAGNESIUM CHLORIDE Юг России: экология, развитие adiabatic calorimeter isochoric heat capacity phase equilibria aqueous solutions of salts geothermal energy specific volume thermocouple temperature dependence |
| title | ISOCHORIC HEAT CAPACITY OF 1% AQUEOUS SOLUTION OF MAGNESIUM CHLORIDE |
| title_full | ISOCHORIC HEAT CAPACITY OF 1% AQUEOUS SOLUTION OF MAGNESIUM CHLORIDE |
| title_fullStr | ISOCHORIC HEAT CAPACITY OF 1% AQUEOUS SOLUTION OF MAGNESIUM CHLORIDE |
| title_full_unstemmed | ISOCHORIC HEAT CAPACITY OF 1% AQUEOUS SOLUTION OF MAGNESIUM CHLORIDE |
| title_short | ISOCHORIC HEAT CAPACITY OF 1% AQUEOUS SOLUTION OF MAGNESIUM CHLORIDE |
| title_sort | isochoric heat capacity of 1 aqueous solution of magnesium chloride |
| topic | adiabatic calorimeter isochoric heat capacity phase equilibria aqueous solutions of salts geothermal energy specific volume thermocouple temperature dependence |
| url | https://ecodag.elpub.ru/ugro/article/view/834 |
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