An apparatus for studying aerosol, comprising: a test chamber comprising one or more panels (110A, 110B, 110C, 110D, 110E) defining an enclosed interior volume, each of the one or more panels (110A, 110B, 110C, 110D, 110E) having a first wall having a surface defining an interior of the test chamber and having a second wall defining an exterior of the test chamber, wherein a void space is defined between the first and second walls (112, 114), wherein each of the panels (110A, 110B, 110C, 110D, 110E) comprises a panel inlet in communication with the void space and a panel outlet in communication with the void space, wherein air flowed through the void space has a temperature greater than the temperature in the enclosed interior volume of the test chamber; a frame configured to retain the one or more panels (110A, 110B, 110C, 110D, 110E), wherein one or both of the panel inlet and the panel outlet are defined through the frame; a chamber inlet port extending through one of the one or more panels (110A, 110B, 110C, 110D, 110E) and defining an air inlet conduit in communication with the enclosed interior volume of the test chamber; a chamber outlet port extending though one of the one or more panels (110A, 110B, 110C, 110D, 110E) and defining an air outlet conduit in communication with the enclosed interior volume of the test chamber; a fan disposed in the enclosed interior volume of the test chamber, the fan positioned and configured to mix air in the enclosed interior volume; and a trap port for sampling contents from the enclosed interior volume, the trap port extending through one of the one or more panels (110A, 110B, 110C, 110D, 110E) and comprising a valve to permit sampling of the contents in the enclosed interior volume. a test chamber comprising one or more panels (110A, 110B, 110C, 110D, 110E) defining an enclosed interior volume, each of the one or more panels (110A, 110B, 110C, 110D, 110E) having a first wall having a surface defining an interior of the test chamber and having a second wall defining an exterior of the test chamber, wherein a void space is defined between the first and second walls (112, 114), wherein each of the panels (110A, 110B, 110C, 110D, 110E) comprises a panel inlet in communication with the void space and a panel outlet in communication with the void space, wherein air flowed through the void space has a temperature greater than the temperature in the enclosed interior volume of the test chamber; each of the one or more panels (110A, 110B, 110C, 110D, 110E) having a first wall having a surface defining an interior of the test chamber and having a second wall defining an exterior of the test chamber, wherein a void space is defined between the first and second walls (112, 114), wherein each of the panels (110A, 110B, 110C, 110D, 110E) comprises a panel inlet in communication with the void space and a panel outlet in communication with the void space, wherein air flowed through the void space has a temperature greater than the temperature in the enclosed interior volume of the test chamber; a frame configured to retain the one or more panels (110A, 110B, 110C, 110D, 110E), wherein one or both of the panel inlet and the panel outlet are defined through the frame; a chamber inlet port extending through one of the one or more panels (110A, 110B, 110C, 110D, 110E) and defining an air inlet conduit in communication with the enclosed interior volume of the test chamber; a chamber outlet port extending though one of the one or more panels (110A, 110B, 110C, 110D, 110E) and defining an air outlet conduit in communication with the enclosed interior volume of the test chamber; a fan disposed in the enclosed interior volume of the test chamber, the fan positioned and configured to mix air in the enclosed interior volume; and a trap port for sampling contents from the enclosed interior volume, the trap port extending through one of the one or more panels (110A, 110B, 110C, 110D, 110E) and comprising a valve to permit sampling of the contents in the enclosed interior volume.