Control strategy for ventilation system of sewage sludge solar dryer

Piotr Krawczyk


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 Skar˙zysko-Kamienna (Central Poland).
Author Piotr Krawczyk (FPAE / IHE)
Piotr Krawczyk,,
- The Institute of Heat Engineering
Journal seriesJournal of Power Technologies, ISSN 2083-4187, e-ISSN 2083-4195
Issue year2016
Publication size in sheets0.5
Keywords in Englishsewage sludge drying, solar drying, ventilation system control
ASJC Classification2102 Energy Engineering and Power Technology
Languageen angielski
746-3603-4-PB.pdf 212.9 KB
Score (nominal)12
Score sourcejournalList
ScoreMinisterial score = 12.0, 08-09-2020, ArticleFromJournal
Ministerial score (2013-2016) = 12.0, 08-09-2020, ArticleFromJournal
Publication indicators WoS Citations = 1; GS Citations = 3.0; Scopus SNIP (Source Normalised Impact per Paper): 2016 = 0.17
Citation count*3 (2020-09-06)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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