Sealed environment chamber for canopy light interception and trace hydrocarbon analyses

Details Sealed environment chamber for canopy light interception and trace hydrocarbon analyses Sealed environment chamber for canopy light interception and trace hydrocarbon analyses

Jan 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999adspr..24..271d&link_type=abstract

Advances in Space Research, Volume 24, Issue 3, p. 271-280.

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Scientific paper

Two sealed chambers were constructed, each measuring approximately 4.5 m × 3 m × 2.5 m (L×W×H). Heat exchangers and air handling components were integrated within the sealed environment. Construction materials were chosen to minimize off-gassing and oxidation. Acceptable materials included stainless steel, TeflonTM, glass and HeresiteTM or baked enamel coated metal parts. The glass-topped chambers have externally mounted microwave powered light sources providing minimum PAR at canopy level of 1000 μm.m-2.s-1. Major gases (CO2, O2) were monitored. Other environmental variables relevant to plant production (humidity, temperature, nutrient solution) were monitored and controlled continuously. Typical environment control capability and system specifications are presented. The facility is described as a venue ideally suited to address specific research objectives in plant canopy light interception, such as the roles of novel microwave powered overhead and inner-canopy light sources for dense plant canopies. In addition, control of recycled hydroponic nutrient solutions and analysis of trace atmospheric hydrocarbons in the context of sealed environment life support can be concurrently monitored.

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