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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,

ConceptDraw Arrows10 Technology

How should diagramming software work? The answer is - Fast and easy.

"Tree"- mode drawing works like that. Just select objects in your drawing and press Tree or Chain button to connect all of them just in one click.

Your diagram looks professional and it took only a moment to draw.

block diagram, function blocks Block Diagrams

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

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.

Amazon Web Services, AWS, Amazon cloud AWS Architecture Diagrams

Amazon Web Services, AWS, Amazon cloud
The flexible AWS cloud solutions will help you to create reliable applications with a high level of scaling in the AWS cloud, to run your applications and accelerate their work on the level of security. Besides AWS resources are available worldwide and yo

interactive voice response system, IVR Interactive Voice Response Diagrams

interactive voice response system, IVR
Interactive Voice Response Diagrams solution extends ConceptDraw PRO v10 with samples, templates and library of ready-to-use vector stencils to help create Interactive Voice Response (IVR) diagrams illustrating a work of interactive voice response system, Voice-over-Internet Protocol (VoIP) diagrams and Action VoIP diagrams with representing voice actors on them.

aerospace symbols, transport symbols Aerospace and Transport

aerospace symbols, transport symbols
This solution extends ConceptDraw PRO software with templates, samples and library of vector clipart for drawing the Aerospace and Transport Illustrations. It contains clipart of aerospace objects and transportation vehicles, office buildings and anci

target diagram, circular diagram, circle diagram Target and Circular Diagrams

target diagram, circular diagram, circle diagram
This solution extends ConceptDraw PRO software with samples, templates and library of design elements for drawing the Target and Circular Diagrams.

site plan, landscape design plan Site Plans

site plan, landscape design plan
Vivid and enticing plan is the starting point in landscape design and site plan design, it reflects the main design idea and gives instantly a vision of the end result after implementation of this plan. Moreover site plan, architectural plan, detailed engineering documents and landscape sketches are obligatory when designing large projects of single and multi-floor buildings.

information graphics, infographics tool What are Infographic Area

information graphics, infographics tool
Solutions of the area What is Infographics from ConceptDraw Solution Park collect templates, samples and vector stencils libraries with design elements for the drawing information graphics.

ConceptDraw Solution Park ConceptDraw Solution Park

ConceptDraw Solution Park
ConceptDraw Solution Park collects graphic extensions, examples and learning materials