Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full. General principles and requirements— 44 стр.
Heating systems in buildings. Method for calculation of system energy requirements and system efficiencies. Heat generation systems, thermal solar systems— 50 стр.
Solar supported gas-fired domestic appliances producing hot water. Appliances not exceeding 70 kW heat input and 500 litres water storage capacity. Assessment of energy consumption— 34 стр.