This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: An engineer wishes to select a suction line that will have a maximum pressure drop which is ... (Read 114 times)

ts19998

  • Hero Member
  • *****
  • Posts: 531
on: Jul 26, 2018
An engineer wishes to select a suction line that will have a maximum pressure drop which is equivalent to a 2F saturation temperature drop. What would be the pressure drop for a 134a system operating with a 0F saturation temperature?
 
  What will be an ideal response?

Question 2

Often around fluorescent lights in a drop ceiling there is a narrow slit. What is the purpose and advantages of application?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jlaineee

  • Sr. Member
  • ****
  • Posts: 380
Reply #1 on: Jul 26, 2018
Answer to Question 1

134a at 0F saturation is 6.5 psig. 134a at -2F saturation is 5.5 psig 6.5  5.5 = 1 psi drop for a 2F saturation temperature drop

Answer to Question 2

That opening is the return air. The advantage of having a return air around the fluorescents is that the heat generated by the light is pulled back up into the return and is not radiated as much into the occupied space.


ts19998

  • Member
  • Posts: 531
Reply 2 on: Jul 26, 2018
YES! Correct, THANKS for helping me on my review

DylanD1323

  • Member
  • Posts: 314
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

Did you know?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

Did you know?

The average person is easily confused by the terms pharmaceutics and pharmacology, thinking they are one and the same. Whereas pharmaceutics is the science of preparing and dispensing drugs (otherwise known as the science of pharmacy), pharmacology is the study of medications.

Rebound Tenderness, Apply Firm Pressure to the Abdomen Rebound Tenderness, Apply Firm Pressure to the Abdomen
Some plastic intake manifolds are equipped with a pressure relief valve that would open in the ... Some plastic intake manifolds are equipped with a pressure relief valve that would open in the ...
The engine is rotated until the timing marks on the front of the crankshaft line up with zero ... The engine is rotated until the timing marks on the front of the crankshaft line up with zero ...
An injector tester being used to check the voltage drop through the injector while the tester is ... An injector tester being used to check the voltage drop through the injector while the tester is ...
Drop Dead Healthy Drop Dead Healthy
Change in Blood Pressure through the Systemic Circuit Change in Blood Pressure through the Systemic Circuit
Video: Brief Summary on Photosynthesis - Animation

For a complete list of videos, visit our video library