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Author Question: What is the difference between a draw-through air system and a blow-through air system? What will ... (Read 64 times)

magmichele12

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on: Jul 26, 2018
What is the difference between a draw-through air system and a blow-through air system?
 
  What will be an ideal response?

Question 2

How does an Infrared leak detector work?
 
  What will be an ideal response?


yuyiding

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Reply #1 on: Jul 26, 2018
Answer to Question 1

In the air handling unit, air passes through the filters, preheater, cooling coil, heating coil, reheater, and finally the fan. This type of system is referred to as a draw-through system because the fan is located after the coils and draws the air across them. A blow-through system would locate the fan before the coils.

Answer to Question 2

Refrigerant is drawn into the tip and travels between an infrared light source and an infrared light sensor. When refrigerant enters the tip, it reflects the infrared radiation and blocks the sensor from seeing it, much like a cloud can block the sun on a cloudy day.


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magmichele12

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Reply #2 on: Jul 26, 2018
Thank you!


yuyiding

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Reply #3 on: Jul 26, 2018
Always glad to help...


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