« previous next »

Author Question: What is the difference between a draw-through air system and a blow-through air system? What will ... (Read 59 times)

magmichele12

  • Hero Member
  • *****
  • Posts: 559
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

  • Sr. Member
  • ****
  • Posts: 357
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.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

magmichele12

  • Hero Member
  • *****
  • Posts: 559
Reply #2 on: Jul 26, 2018
Thank you!


yuyiding

  • Sr. Member
  • ****
  • Posts: 357
Reply #3 on: Jul 26, 2018
Always glad to help...


« previous next »
 

Did you know?

Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

Did you know?

Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

Did you know?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

The female reproductive system. (a) Sagittal section through the pelvis. (b) Top view of pelvic orga The female reproductive system. (a) Sagittal section through the pelvis. (b) Top view of pelvic orga
Neuro System Neuro System
A typical open-end wrench. Note the size difference on each end and that the head is angled 15 ... A typical open-end wrench. Note the size difference on each end and that the head is angled 15 ...
Neurotransmitters of the Autonomic Nervous System Neurotransmitters of the Autonomic Nervous System
The Conduction System The Conduction System
The Autonomic Nervous System The Autonomic Nervous System
Video: Endocytosis -Types and Phagocytosis

For a complete list of videos, visit our video library