For diesel engines used in public transport the exhaust gas recirc valve is used during winter months to heat incoming air into the engine to burn fuel more efficiently.

In most power plants today these huge air heaters are used. They have these massive rotating glass panes that sort of look like revolving doors. They are sealed compartmentally with the airflow however. In one compartment as it rotates these huge glass panes are heated by the boiler exhaust and can get as warm as 500 degrees. In the next compartment the cool incoming air for the furnaces hit the glass and cool the glass down. The end result is that the exhaust air gets cool from around 500 degrees to half its temperature at around 250. Not always perfect, but it usually maintains. It gets a lot colder in winter months. The incoming air exchanges all that heat and goes into the furnace and they figure they burn about %35 less coal because of the regenerative heat exchanges.

The concept should be applied everywhere really. Cars, trucks, even the furnace of your house. ESPECIALLY the furnace of a house!!! That would save people $$$ man!

*sigh*

Anyhow it’s been around a lot longer than 4 years. I’d say at the place I work those were installed on startup. The plant is about 30 years old now.

For diesel engines used in public transport the exhaust gas recirc valve is used during winter months to heat incoming air into the engine to burn fuel more efficiently.

In most power plants today these huge air heaters are used. They have these massive rotating glass panes that sort of look like revolving doors. They are sealed compartmentally with the airflow however. In one compartment as it rotates these huge glass panes are heated by the boiler exhaust and can get as warm as 500 degrees. In the next compartment the cool incoming air for the furnaces hit the glass and cool the glass down. The end result is that the exhaust air gets cool from around 500 degrees to half its temperature at around 250. Not always perfect, but it usually maintains. It gets a lot colder in winter months. The incoming air exchanges all that heat and goes into the furnace and they figure they burn about %35 less coal because of the regenerative heat exchanges.

The concept should be applied everywhere really. Cars, trucks, even the furnace of your house. ESPECIALLY the furnace of a house!!! That would save people $$$ man!

*sigh*

Anyhow it’s been around a lot longer than 4 years. I’d say at the place I work those were installed on startup. The plant is about 30 years old now.

For diesel engines used in public transport the exhaust gas recirc valve is used during winter months to heat incoming air into the engine to burn fuel more efficiently.

In most power plants today these huge air heaters are used. They have these massive rotating glass panes that sort of look like revolving doors. They are sealed compartmentally with the airflow however. In one compartment as it rotates these huge glass panes are heated by the boiler exhaust and can get as warm as 500 degrees. In the next compartment the cool incoming air for the furnaces hit the glass and cool the glass down. The end result is that the exhaust air gets cool from around 500 degrees to half its temperature at around 250. Not always perfect, but it usually maintains. It gets a lot colder in winter months. The incoming air exchanges all that heat and goes into the furnace and they figure they burn about %35 less coal because of the regenerative heat exchanges.

The concept should be applied everywhere really. Cars, trucks, even the furnace of your house. ESPECIALLY the furnace of a house!!! That would save people $$$ man!

*sigh*

Anyhow it’s been around a lot longer than 4 years. I’d say at the place I work those were installed on startup. The plant is about 30 years old now.