Renewable power engineering. Thermal solar systems and components. Test methods for solar collectors. Part 3. Thermal performance of glazed liquid heating collectors (sensible heat transfer only) including pressure drop
Fire equipment. Fire self-rescuers with chemically fixed oxygen for the protection of people against toxic products at the escape from smoking buildings during a fire. General technical requirements. Test methods
Services of housing maintenance, public utilities and administration of apartment buildings. Services content in-house power supply systems of apartment buildings. General requirements