Radiator for central heating system - is made from light alloy extrusion, containing several tubes
DE3233450A1
Supply air heat-exchange device with variable degree of efficiency
EP0029573A2
Heat exchangers, their formation and arrangement in an installation for heat recovery by exchange of air, in particular for dwelling houses and comparable lay-outs
DE3030415A1
Heat exchanger for domestic heating system - has dividing wall with large surface area for maximum heat transfer
DE2947432A1
Air-to-air heat exchanger - comprises flat heat conductive elements between fresh and stale air passages
DE2545817A1
Roadside embedded guide post retainer - has sheath segments limiting post depth with spade ended shaft extension
