Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

    We have a manual that explains all the features 

Record number 319525
Title Dehumidification in greenhouses by condensation on finned pipes
Author(s) Campen, J.C.; Bot, G.P.A.
Source Biosystems Engineering 82 (2001)2. - ISSN 1537-5110 - p. 177 - 185.
DOI http://dx.doi.org/10.1006/bioe.2002.0058
Department(s) Institute of Agricultural and Environmental Engineering
Systems and Control Group
PE&RC
Publication type Refereed Article in a scientific journal
Publication year 2001
Abstract In this study, an experimental dehumidifying system for greenhouses is tested. The system uses finned pipes fixed under the gutter of the greenhouse. The pipes are cooled below the dewpoint of the greenhouse air by cold water. The humid air passes the pipe and fins by natural convection and condensation occurs reducing the humidity in the greenhouse. The performance of the system in relation to its location and dimensions are studied by computational fluid dynamics calculations. The total heat transferred and condensate removed are monitored as a function of the greenhouse conditions. The system removes 40 g of condensate per hour per square metre of greenhouse floor from the humid air sufficient during periods when heating is applied and ventilation is minimized. The heat transferred at the cold surface by condensation is less than one-third of the total heat removed by the system at a relative humidity of 80%.
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