Patent ID: 6543932
Filing Date: 2003-04-08
Classification: F24F

Abstract:
An enthalpy tunnel for receiving a mass flow rate of conditioned air comprising:a settling chamber of substantially circular cross section having an inlet, a single aerodynamically smooth bell-shaped outlet, and an air settling and mixing volume disposed therebetween, a main tunnel attached to said bell-shaped outlet and disposed so as to accept the conditioned volume of air from said outlet, said tunnel comprising: an inlet end attached to said flow sensor disposed so as to receive the air stream from said flow sensor, a discharge end, a hollow body interposed between said ends, a sampling connection forming an opening through said hollow body, a sampling tunnel connected to said sampling connection disposed so as to divert and capture an air sample from said main tunnel, and a flow sensor and transmitter interposed between said bell-shaped outlet and said main tunnel for generating a signal proportionate to the flow rate of said conditioned volume of air.