USDA Stuttgart Rice Research Greenhouses, Stuttgart, AR
(Completed in 2005)
Two large air conditioners with supply and return air ducts for two separate air conditioned research cells glazed with insulated glass and used for advanced rice research.
Motorized shade system under insulated glass roof on galvanized steel frame of square tube. Note double roof vents with insect screens at roof vent opening through opening in shade system.
Glass greenhouse still under construction. Note aluminum entry doors and slant wall Acme exhaust fans for this cell. This greenhouse features double roof vents, a lightning protection system on top of greenhouse ridge, motorized shade system and concrete stemwalls. Greenhouse butts up against headhouse and offices.
View of two earlier Phase I greenhouses with a central service corridor in background and newer Phase II gutter connected research greenhouse with two long research greenhouses sharing a central service corridor to foreground. These Nexus galvanized steel frame greenhouses are glazed with tempered single glass panes on pad and fan cooled cells and insulated glass on the air conditioned greenhouse cells.
Clear tempered glass on galvanized steel frame with concrete stemwalls. Note two slant wall Acme exhaust fans for each greenhouse cell.
Small gutter connected service corridor serving research greenhouses to both sides. Note roof vents are open on the service corridor to provide fresh air to the cooling pads on the corridor wall of each cell. You can see the motorized shutters open to allow air to reach the Koolcel pads in a cell visible through the windows on the double door at the south end of the corridor. Each greenhouse has lightning protection spikes down the greenhouse ridge and you can see the shadow caused by the slope/flat/slope motorized shade system in each greenhouse cell.
Tempered 5/32” thick glass on galvanized Nexus steel greenhouse frame with concrete stemwalls and Acme slant wall fans. Also note gutter downspouts, light fixtures inside cells and lightning protection on greenhouse ridges.
Tempered glass on Nexus galvanized steel greenhouse frame with concrete stemwall, with roof vents, slant wall exhaust fans and PVC downspouts. Note pipe bollards to protect exhaust fans along service driveway to access headhouse. Note one set of roof vents is wide open over one of the greenhouse cells.
Slope/flat/slope motorized shade system under tempered glass roof in “closed” position to provide roof shading to crops below. Mounted on galvanized Nexus steel greenhouse frame. Note top of Koolcel evaporative cooling pad system in background, roof vent controls on wall above pads. Also note hot water supply and return piping to hot water Modine unit heaters.
Tempered glass on galvanized Nexus steel greenhouse frame with Koolcel pad system, motorized shade system and high pressure sodium plant lighting systems visible over concrete floor before benches are installed.
View down service corridor with research greenhouses to each side. Intake air for pad systems in each cell provided through roof vents overhead. Air then allowed into individual cells as needed through motorized shutters on both sidewalls that open when the Wadsworth control system in that cell calls for air or the more advanced stage of wetting the Koolcel pad system just inside the shutters for each cell. The water sump tank for each cell is visible in the corridor as are the controls and electric service panels for each cell.
Typical base plate for sidewall post on top of concrete stemwall. You can also see an exhaust fan penetrating through the glass wall and some of the high pressure sodium light fixtures hanging over the concrete floors where benches will be located just a few a days after this picture was taken.