Chalaev D. Development the theory and practice of sorption and vapor compression technologies for heat transformation

The purpose of the dissertation is to solve the scientific and practical problem of improving technologies for heat transformation using sorption and vapor compression heat pumps. The problem is solved by creating adsorption thermal transformers based on new energy-intensive sorbents and developing energy-saving technological processes of convective drying using vapor compression heat pumps. A methodology based on the analysis of thermodynamic cycles of sorption-type heat pumps has been developed for the search and selection of adsorption materials promising for the use as working fluid of adsorption thermal transformers. Experimental samples of adsorption heat pumps and adsorption refrigerators using adsorbents reached from salts of alkali and alkaline-earth metals have been created and tested, the sorption effect of which is formed on the effect of reversible thermochemical reactions. Due to the generalization of the test results, the energy indicators of the actual adsorption cycle were obtained and the basics of thermal engineering calculation and design of adsorption units on salt adsorbents were developed. Technological schemes of heat supply with the use of abandoned gas wells have been developed. The processes of thermolabile materials convective drying in a closed circulation circuit with forced dehydration of the drying agent using a condensation heat pump have been investigated and optimized. The temperature parameters of the heat pump cycle have been determined, at which the energy consumption for the removal of moisture from the air is minimal. Analytical dependences to optimize the dehumidification process and to intensify the convective drying process have been obtained.