The relative change of drying rate as a function of the cumulative ventilation air drying potential in a thin-layer solar drying facility

Piotr Krawczyk

Abstract

Controlling low-temperature drying facilities which utilise non-prepared air is quite difficult, due to very large variability of ventilation air parameters - both in daily and seasonal cycles. The results of experimental studies of sewage sludge solar drying process in thin-layer solar dryer have been presented. It was found that regardless of weather conditions, the rate of sewage sludge drying is significantly changed during drying process. The results showed that the rate of drying decreases with increasing so called cumulative ventilation air drying potential.Knowledge on current dryin rate provides new possibilities for controlling such systems. Based on the results, operating recommendations for analysed type of dryer have been formulated. Experimental data analysed in the paper was collected in 2012 - 2014 during operation of a test solar drying facility in a sewage treatment plant in Błonie near Warsaw, Poland.

Author Piotr Krawczyk (FPAE / IHE)
Piotr Krawczyk,,
- The Institute of Heat Engineering
Journal seriesIOP Conference Series: Materials Science and Engineering, ISSN 1757-8981, e-ISSN 1757-899X, (0 pkt)
Issue year2019
Vol556
No1
Article number012055
Conference9th International SOLARIS Conference, 30-08-2018 - 31-08-2018, Chengdu, Chiny
DOIDOI:10.1088/1757-899X/556/1/012055
Languageen angielski
Score (nominal)5
Score sourcejournalList
ScoreMinisterial score = 5.0, 23-01-2020, ArticleFromJournal
Publication indicators Scopus Citations = 0
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