Improvement of IR emitter to create non-reflector dryer for plant raw materials

Authors

DOI:

https://doi.org/10.15587/2312-8372.2017.98068

Keywords:

flexible film resistive electric heater, non-reflector IR dryers of plant raw materials, quality of dried semi-finished products

Abstract

The object of research is an improved flexible film resistive electric heater of emitting type (FFREHET) for creating a non-reflector IR dryer and vegetable raw material on the example of Antonovka apples.

It is proposed to improve the FFREHET by spraying a resistive element based on current-conducting nichrome paste on a flexible electrical insulating film with additional coating on top and bottom by layers of a flexible electrical insulating film. Also, FFREHET is provided with drainages for connection to the power grid.

The spectral-optical properties of the Antonovka apple are determined, namely the acceptable IR regions of its absorbing capacity (2.5...3, 6, 9 and 12...15 μm). This confirms the effectiveness of using FFREHET during the drying of plant raw materials. It is confirmed the low inertia of the FFREHET at a temperature of 60 ºC with the heating duration τ/ = 87 s, which simultaneously corresponds to the constant uniform temperature of the working surface and is characterized by a clear dynamics of operation.

Non-reflector VC IR dryer with a vibrating mechanism and a heat exchanger is developed. Improved FFREHET follows the geometric shape of the working chamber of the device, ensuring a reduction in the geometric dimensions and simplicity of device design. According to experimentally obtained kinetics of moisture content for Antonovka apples, the shortest duration of heat treatment is 160 s-1 with conservation of BAS and natural color.

Author Biographies

Lyudmila Kiptelaya, Kharkiv State University of Food Technology and Trade, Klochkivska str., 333, Kharkiv, Ukraine, 61051

Doctor of Technical Sciences, Professor

Department of Processes, Devices and Automation of Food Production

Andrii Zahorulko, Kharkiv State University of Food Technology and Trade, Klochkivska str., 333, Kharkiv, Ukraine, 61051

PhD, Assistant

Department of Processes, Devices and Automation of Food Production

 

Aleksey Zagorulko, Kharkiv State University of Food Technology and Trade, Klochkivska str., 333, Kharkiv, Ukraine, 61051

PhD, Associate Professor

Department of Processes, Devices and Automation of Food Production

Bogdan Liashenko, Kharkiv State University of Food Technology and Trade, Klochkivska str., 333, Kharkiv, Ukraine, 61051

PhD, Associate Professor

Department of Processes, Devices and Automation of Food Production

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Published

2017-03-30

How to Cite

Kiptelaya, L., Zahorulko, A., Zagorulko, A., & Liashenko, B. (2017). Improvement of IR emitter to create non-reflector dryer for plant raw materials. Technology Audit and Production Reserves, 2(3(34), 17–22. https://doi.org/10.15587/2312-8372.2017.98068

Issue

Section

Food Production Technology: Original Research