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"Automobile air conditioning systems cool the occupants of a vehicle in hot weather, and have come into wide use from the late twentieth century. Air conditioners use significant power; on the other hand the drag of a car with closed windows is less than if the windows are open to cool the occupants evaporatively. There has been much debate on the effect of air conditioning on the fuel efficiency of a vehicle. Factors such as wind resistance, aerodynamics and engine power and weight have to be factored into finding the true variance between using the air conditioning system and not using it when estimating the actual fuel mileage. Other factors on the impact on the engine and an overall engine heat increase can have an impact on the cooling system of the vehicle." [Automobile air conditioning. Wikipedia]
The block diagram example "Automotive HVAC system" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Block Diagrams solution from the area "What is a Diagram" of ConceptDraw Solution Park.
Automotive HVAC system
Automotive HVAC system, block diagram,

Create Block Diagram

Block diagrams solution extends ConceptDraw PRO software with templates, samples and libraries of vector stencils for creating the block diagram.

Create block diagrams, electrical circuit diagrams, schematics, and more in minutes with ConceptDraw PRO.

systems engineering, sysml SYSML

systems engineering, sysml
The SysML solution helps to present diagrams using Systems Modeling Language; a perfect tool for system engineering.

event-driven process chain diagram, EPC diagram, process chain flowchart Event-driven Process Chain Diagrams

event-driven process chain diagram, EPC diagram, process chain flowchart
Event-driven Process Chain (EPC) Diagram is a type of flowchart widely used for modeling in business engineering and reengineering, business process improvement, and analysis. EPC method was developed within the Architecture of Integrated Information Systems (ARIS) framework.

Cross-Functional Flowchart Basics

Don't let your first glance fool you. ConceptDraw is a lot easier to use than it looks. Use its cross-functional templates and library as basics to get started.
All you need to know are a few basic steps and terms.

ConceptDraw Arrows10 Technology is a new age in drawing software. Use it for process flows and its new rapid draw feature enables to draw an impressive charts in a seconds.