Method and circuit arrangement for autonomic accounting metered utility warm water in buildings linked to heating centers
HU9200312D0
Optimum control method for firing devices
HU902583D0
Combined quantity regulating or limiting and pressure and/or temperature difference regulating device operating by means of auxiliary energy mainly for distance heatisupplying heating centres
HUT48741A
Method and connection arrangement for periodic energy-spare domestic hot-water supplying buildings provided with separate heating and domestic hot-water producing system particularly building connected into district heating network
HU198159B
Process for regenerating ion-exchange resin and utilizing the regenerate in the agriculture
HUT45568A
Switching system for active anticorrosion protection of power transmission lines, primarily for heat-transmission lines
HU198791B
Temperature-sensing structure for measuring the temperature of media flowing in pipelines with heat-insulation claped by flanges
HUT42814A
Corrosion-proof tubing placed into protecting channel
HU172358B
Fin-and-tube counterflow recuperator
DE2240784A1
Reducing galvanic corrosion - in hot water systems etc using inserts of more base metal (alloy)
