Design and construction 3 Equipment and supplies Heat exchangers Chemical engineering 2 Chemical process control 2 Chemistry, Technical 2 Data processing 2 plus ... Energy facilities 2 Extraction (Chemistry) 2 Fluid dynamics 2 Natural gas 2 Oil storage tanks 2 Petroleum refineries 2 Pipe and fluid dynamics 2 Plate towers 2 Shells (Engineering) 2 Storage 2 Air conditioning 1 Air conditioning from central stations 1 Boilers 1 Centrifugal pumps 1 Control 1 Cooling 1 Digital control systems 1 Energy storage 1 Heat 1 Heat balance(Engineering) 1 Heat pumps 1 Heat recovery 1 Heat storage devices 1 moins ...