The New Construction of Heating Elements for Greenhouse Heating Systems

Jarosław Knaga , Stanisław Famielec , Kazimierz Rutkowski


Power demand in a greenhouse’s heating system is characterized by high diversity over time. The differences range from several to more than a dozen times and are a result of conditions changes between day and night as well as in longer periods of time. Improving greenhouse microclimate and reducing heat losses are nowadays the main research areas in greenhouse technology. New construction of heating pipes – hexagram-shaped pipes called “Walczak’s pipes” – enable higher heat efficiency and quicker response to changes of external conditions. In this research Walczak’s pipes made of polypropylene were tested. Specific heat efficiency was determined for three different heating medium flow rates. Moreover, thermal parameters of the tested pipes were compared to those of similar pipes made of steel. The conducted research allowed for stating that Walczak’s pipes made of PP are suitable for low-temperature heating systems, e.g. in greenhouses, heat pumps, etc.
Author Jarosław Knaga (FoPaPE / DoEaAPA)
Jarosław Knaga,,
- Department of Energy and Agricultural Process Automation
, Stanisław Famielec (FoPaPE / IoAEaI)
Stanisław Famielec,,
- Institute of Agricultural Engineering and Informatics
, Kazimierz Rutkowski (FoPaPE / IoAEaI)
Kazimierz Rutkowski,,
- Institute of Agricultural Engineering and Informatics
Publication size in sheets0.5
Book Krakowiak-Bal Anna, Vaverkova Magdalena (eds.): Infrastructure and Environment, 2019, Springer, ISBN 978-3-030-16541-3, [978-3-030-16542-0], 392 p., DOI:10.1007/978-3-030-16542-0
Keywords in EnglishGreenhouse, Walczak’s pipes, Heating pipes, Heating system
Languageen angielski
Score (nominal)20
Citation count*
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FinansowanieThis research was financed by the Ministry of Science and Higher Education of the Republic of Poland (statutory activities DS-3600/WIPiE/2018, Faculty of Production and Power Engineering, University of Agriculture in Krakow).
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