Experimental Sun-proof Cabinet


Previous Picture End Box Swift Cabinet

Up To UpSwift Nestboxes

Swifts under Eaves Next Picture


Sometimes, the only option for a nest-box is a south-facing wall. In such cases, one needs to defend the nesting space from the sun. Experiments with a single double-skinned nest-box kept the temperature to 37C on a day when the temperature reached 34C in the shade. 40C is thought to be the maximum safe limit. This cabinet has been installed on a house in Cambridge with a max-min thermometer inside for testing this summer. It has a double roof and the the front is an "air sandwich" made of 12mm marine ply. There are ventilation holes on the back with 12mm spacers to allow an air gap next to the wall. It is painted white to reflect the sun. The internal dimensions of each nest-box are roughly 400mm x 200mm x 175mm. The birds need to traverse an entrance (30mm x 75mm) through 36mm of plywood.
During the summer of 2010, on a day when the temperature in the shade reached 29.1C, the temperature in the box reached 30C.


P02225

P02226

Sun-proof cabinet computer model

P02227

Sun-proof cabinet exploded

Previous Picture End Box Swift Cabinet

Up To UpSwift Nestboxes

Swifts under Eaves Next Picture

Home Home | Search Search

If you wish to comment, feel free to send a mail message by clicking this icon Send email

© 2001 Magik Circle Limited http://www.magikcircle.com