Forecasting of thermal performances of working bodies heat engineering of devices

• Дата: 2015
• Автори: Левтеров, А. М., Умеренкова, К. Р.
• Формат: Стаття
• Мова: Russian
• Опубліковано: Інститут енергетичних машин і систем ім. А. М. Підгорного Національної академії наук України 2015
• Теми: thermal characteristics; phase equilibriums; alternative energy sources; working body; mathematical model; УДК 532 541.11; теплофизические свойства; фазовые равновесия; рабочее тело; альтернативные энергоносители; математическая модель; теплофізичні властивості; фазові рівноваги; робоче тіло; альтернативні енергоносії; математична модель
• Онлайн доступ: https://journals.uran.ua/jme/article/view/40251
• Назва журналу: Energy Technologies & Resource Saving

The procedure of definition of parameters of phase equilibriums and thermal properties of the alternate non-petroleum power supplies used in manifold heat engineering of devices is offered. Descriptions of designed mathematical models of vapour-liquid equilibrias in multicomponent molecular intermixtures are submitted. Mathematical models of phase equilibriums and their numerical embodyings are based on the statistical mechanical approach within the framework of a thermodynamic perturbation theory without attraction of empirical parameters. Features of a method are the following: limited initial information for calculations, a hair accuracy, applicability for a wide class of substances in any practically important gamuts of states. Received results for basic properties and phase equilibriums predict performances of intermixtures in unexplored experimentally gamuts of states down to pressures 1000 МПа and temperatures up to 5000 K or up to temperatures of pyrolysis. Errors of calculations of predicted thermal performances of multicomponent working bodies are at a level of routine experimental errors.