Static heat recovery ventilation system

Abstract

The static heat recovery ventilation system exchanges heat, through a heat pipe heat exchanger, between stale air exhausted from a house or an apartment and the fresh air intake into the house or the apartment In a first aspect of the invention, the static heat recovery system uses a negative pressure generated by exhaust equipment inside the house or apartment, such as a bathroom fan or a range hood fan, to induce an entry of fresh air through the heat exchanger and into the house or apartment. In another aspect of the invention, the static heat recovery system uses a positive pressure in the hallway of an apartment building to induce an entry of fresh air through the heat exchanger and into a suite of apartments.

I claim:  
     
         1 . A method for ventilating a suite of apartments having an exterior wall and a bathroom and an exhaust fan in said bathroom, said method comprising the steps of: 
 providing a heat exchanger inside said suite of apartments, said heat exchanger having a fresh air inlet and a stale air outlet extending through said exterior wall, a fresh air outlet communicating with an inside space in said suite of apartments, and a stale air inlet connected to an outlet of said exhaust fan in said bathroom;    using said bathroom fan, causing a negative pressure inside said suite of apartments and in said fresh air outlet, and    causing an air circulation through said heat exchanger from said fresh air inlet to said fresh air outlet and into said suite of apartments.    
     
     
         2 . The method as claimed in  claim 1 , wherein said negative pressure is an EPS differential of about 20 pascal.  
     
     
         3 . The method as claimed in  claim 1 , further comprising the step of simultaneously discharging fresh air from said fresh air outlet into two adjacent rooms in said suite of apartments.