Modeling of thermal and flow processes in a solar waste-water sludge dryer with supplementary heat supply from external sources

• Autorzy: Krawczyk, P. , Badyda, K.
• Języki publikacji: EN

Abstrakty

EN

This article presents a continuation of previous research on a model of solar waste-water sludge drying processes. The primary premises for that model were described in [1, 2]. This paper presents results from a simulation of a drying process powered by solar radiation energy supplemented with external heat delivered to the dried matter through an IR heating lamp installation and floor heating system. The modeling results were used to discuss the impact of individual heat delivery systems on the primary performance parameters of the drying facility (primarily its efficiency) as well as on the operation of the ventilation system and sludge shuffing installation. Appropriate shuffing frequency has a significant impact on both the efficiency of the facility and its electricity consumption. Another analyzed parameter was effectiveness of supplementary heat usage, both for the IR lamp system and the floor heating system.

Słowa kluczowe

PL

suszenie osadów ściekowych; obliczeniowa mechanika płynów; suszenie słoneczne; wymiana ciepła; wymiana masy

EN

waste-water sludge drying; computational fluid dynamics CFD; CFD; solar drying; heat exchange; mass exchange

• Czasopismo: Journal of Power Technologies
• Rocznik: 2011
• Tom: Vol. 91, nr 1
• Strony: 37-40
• Opis fizyczny: Bibliogr. 4 poz., wykr.

Twórcy

autor

Krawczyk, P.

autor

Badyda, K.

• Institute of Heat Engineering, Warsaw University of Technology, 21/25 Nowowiejska Street, 00-665 Warsaw, Poland,

Bibliografia

• [1] P. Krawczyk, Research of the heat-flow processes in sewage sludge solar dryer, Ph.D. thesis, Division of Power Machines and Devices, Institute of Heat Engineering, Warsaw University of Technology (2008).
• [2] K. Badyda, P. Krawczyk, Research of heat and flow processes in a solar waste-water sludge dryer, Polish Journal of Environmental Studies 17 (2008) 28-32.
• [3] J. Szczygieł, W. Szwarc, P. Krawczyk, Solar drying of sewage sludge, Czysta energia 11 (2005) 36-37.
• [4] J. Szczygieł, P. Krawczyk, Determinants of solar drying of sewage sludge, Gaz, woda i technika sanitarna 3 (2006) 30-32.