34 - Engineering diagrams

Abstract

This chapter covers all aspects of engineering diagrams from a basic block diagram through to the presentation of complex systems as drawings and on to full circuit design. Heating, Ventilation and Air conditioning, Hydraulic, Pneumatic, Electronic, Refrigeration and energy saving systems are covered. Reference is made to essential international standards which provide a major source of material for the symbology used in the preparation of diagrams. Tables containing commonly used symbols, psychrometric charts and examples of working circuit diagrams are shown throughout the chapter along with supporting explanations and guidance on function controls, safety devices and logic functions.