Physical Modeling of Thermal Processes of the Air Solar Collector with Flow Turbulators
Journal Title: Energy Engineering and Control Systems - Year 2018, Vol 4, Issue 1
Abstract
The analysis of existing systems of solar air heating has been carried out. The physical model of the solar air collector (SAC) with additionally installed flow turbulators, which are located in the air channel of the solar collector, is presented to improve its thermal characteristics and efficient use in temperate climates. The energy balances for the five key elements of the SAC have been presented and the balance equations system has been written. To determine the geometrical and heat engineering parameters of the flow turbulators, a number of graphical dependencies have been recorded. We found out that in the air channel of the solar collector there is a transitional movement of the heat carrier, and the maximum coefficient of convective heat exchange between the turbulator of flow and air is observed at the angle of inclination of the heat absorber of 45 deg. The computer simulation of thermal processes occurring in the air channel of the solar collector was carried out and we discovered that the power of the proposed SAC increased by 23% compared to the solar collector with a flat heat-absorbing plate.
Authors and Affiliations
Vasyl Zhelykh, Khrystyna Kozak, Olexandra Dzeryn, Volodymyr Pashkevych
Keywords
Related Articles
- EP ID EP308009
- DOI 10.23939/jeecs2018.01.009
- Views 86
- Downloads 0
Methods for Defining the Binary Coal Mixture Composition in the Pulverized Coal-Fired Boiler
The paper deals with the methods for defining the composition of the coal mixture burnt in boilers at combined heat and power plants. Indirect methods for defining the proportions of the two grades of coal in the mixture...
Drying of Antioxidant Composite Materials based on Table Beet
Reduction in the cost of energy in the food industry is an important challenge today due to increased prices. Drying process of plant material refers to the complex energy-intensive processes. Solution of this problem is...
Modeling of Hydraulic Load of Electric Drive in Electrical Complex of Pumping Station
The paper analyses the contemporary state of the electric drive hydraulic load modelling in the pumping stations’ electrotechnical complex applications. It was found that in the vast majority of cases, mathematical model...
Dynamic Modelling of Centrifugal Hydraulic Load of Pumping Station Electric Drive
The paper analyzes modern trends in modelling the centrifugal hydraulic load of the pumping station electric drive. It was found that a very simplified approach to the representation of one of the inextricably linked sub...
Digital Complex for Modeling Processes in Electric Circuits with Protection and Automatic Devices
The developed digital complex for modeling electromechanical and electromagnetic processes in electric circuits of any configuration with electromagnetic devices, control devices, synchronous and asynchronous motors incl...