Effectiveness Analysis of Recirculation Dryer with a Heat Pump
Keywords:Heat pump, Drying of grain, Recirculation
AbstractThe results of the thermodynamic analysis of conventional and heat pump conveyer convective drying of grain are shown in this article. The purpose of this work is to analyze the impact of recirculation on the energy efficiency of traditional and heat pump grain dryers. The mathematical model should also shows energy advantage of heat pump dryers in relation to traditional. Modeling of processes is performed for the first period of drying at a constant rate of moisture removal from the grain. The calculations were made for wheat grain. The influence of recirculation on the increasing of the drying systems efficiency has been showed. The conclusions considering the effectiveness of the conveyer heat pump dryers, as well as the quantitative characteristics of utilization rates of external energy for evaporation have been made. A significant increase of energy efficiency of dryer using the heat pump as a heat source was shown. The efficiency of the heat pump increases significantly with decreasing drying process temperature.
Вобликов Е.М. Технология элеваторной промышленности: Учебник. – СПб: Лань, 2010. – 384 с.
Малин Н.И. Технология хранения зерна. – М.: КолосС , 2005. – 278 с.
Малин Н.И. Энергосберегающая сушка зерна. – К.: КолосС, 2004. – 240 с.
Данилов О.Л., Леончик Б.И. Экономия энергии при тепловой сушке. – М.: Энергоатомиздат, 1986. – 136 с.
Рей Д. Экономия энергии в промышленности: Справ. пособие для инженерно-технических работников / Пер. с англ. – М.: Энергоиздат, 1983. – 208 с.
Янтовский Е.И., Левин Л.А. Промышленные тепловые насосы. – М.: Энергоиздат, 1989. – 128 с.
Лыков А.В. Теория сушки. – М.: Энергия, 1968. – 472 с.
Безродный М.К., Кутра Д.С. Эффективность применения тепловых насосов в установках сушки древесины: Монография. – К.: НТУУ “КПИ”, 2011. – 240 с.
LicenseCopyright (c) 2017 NTUU KPI Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under CC BY 4.0 that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work