Updated Heating Tunnel for Solar Glass

The glass will be ejected out from the reaction chamber with high temperature around 300℃. In order to avoid glass broke due to temperature dramatically dropping.  When the glass is finally output from the tunnel, temperature will no more than 40℃
First two sections are heating section, temperature is around 250℃, hot air blows out from top and bottom.  The conveyor speed and temperature of each section could be adjustable independently.
For the third section, just big fan blowers are equipped, also with a chiller to provide cold air.