Control strategy for ventilation system of sewage sludge solar dryer

• Autorzy: Krawczyk P.
• Języki publikacji: EN

Abstrakty

EN

Control of low-temperature drying facilities using unprocessed air causes multiple difficulties due to major variability of ventilation air properties, both daily and seasonal. This paper presents an analysis of operating parameters of a sludge solar drying plant based on an approach that uses the concept of ventilation air drying potential. Formulas for the drying rate as a function of temperature and humidity of the ventilation air are given. Analysis results are used to propose recommendations for control strategy for such facilities aimed at improving efficiency and lowering power consumption. The analytical work was based on experimental data collected during operation of a test solar sludge drying facility located at a waste water treatment plant in Skarżysko-Kamienna (Central Poland).

Słowa kluczowe

EN

sewage sludge drying; solar drying; ventilation system control

PL

suszenie osadów ściekowych; suszenie słoneczne; sterowanie wentylacją

• Wydawca: Institute of Heat Engineering, Warsaw University of Technology
• Czasopismo: Journal of Power Technologies
• Rocznik: 2016
• Tom: Vol. 96, nr 2
• Strony: 145--148
• Opis fizyczny: Bibliogr. 14 poz., wykr.

Twórcy

autor

Krawczyk P.

• Division of Power Machines and Devices, Institute of Heat Engineering, Warsaw University of Technology ul. Nowowiejska 25, 00-665 Warszawa, Poland

Bibliografia

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• [6] P. Krawczyk, Research of the heat–flow processes in sewage sludge solar dryer, Ph.D. thesis, Ph. D. thesis, Division of Power Machines and Devices, Institute of Heat Engineering, Warsaw University of Technology (2008).
• [7] P. Krawczyk, Cumulative ventilation air drying potential as an indication of dry mass content in wastewater sludge in a thin-layer solar drying facility, Archives of Thermodynamics 34 (4) (2013) 23–34.
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• [10] P. Krawczyk, K. Badyda, Modelling of heat and flow processes in thin layer solar sludge dryer. impact of using mixing baffles on the basic parameters of the dryer, Polish J. Env. Stud 20 (2011) 185–189.
• [11] K. Badyda, P. Krawczyk, Research of heat and flow processes in a solar waste–water sludge dryer, Polish Journal of Environmental Studies 17 (3A) (2008) 28–32.
• [12] W. Szwarc, J. Szczygieł, P. Krawczyk, Technologia słonecznego suszenia osadów ściekowych (the technology of solar drying of sewage sludge), Czysta Energia 11 (2005) 26–28.
• [13] P. Krawczyk, Badania doświadczalne suszarni słonecznej osadów ściekowych–szybkość suszenia w funkcji parametrów wentylacji (experimental studies of sewage sludge solar drying - drying rate as a function of ventilation parameters), Zeszyty Naukowe Politechniki Rzeszowskiej. Mechanika (2015) 37–44.
• [14] J. Milewski, W. Bujalski, M. Wołowicz, K. Futyma, J. Kucowski, R. Bernat, Experimental investigation of co 2 separation from lignite flue gases by 100 cm 2 single molten carbonate fuel cell, International Journal of Hydrogen Energy 39 (3) (2014) 1558–1563.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.