Passive heat-transport system

Passive ventilated control box

Perimeter seal for air heater

Perimeter sealing element for regenerative heat exchanger

Piston sealing

Plate heat exchangers

Plate stabilizer assembly for rotary regenerative air preheaters

Pneumatic transport and heat exchange systems

Pollution control and heat recovery

Power transformer waste heat recovery system

Preheater and method of controlling wrap of a web

Pressure cooker with regulated vapor pressure

Pressure staged heat exchanger

Pressure vessels

Prismatic brick of refractory material

Prismatic refractory brick for glass melting furnace chambers

Procedure for controlling a thermal installation

Process and an apparatus for cooling of waste gas bends

Process and apparatus for alternately heating and cooling a heat

Process and apparatus for control of the climatic environment of