« previous next »

Author Question: When would a steam boiler be preferable over a hot-water-type boiler? What will be an ideal ... (Read 78 times)

sabina

  • Hero Member
  • *****
  • Posts: 563
on: Jul 26, 2018
When would a steam boiler be preferable over a hot-water-type boiler?
 
  What will be an ideal response?

Question 2

What is meant by a closed breaker as compared to an open breaker?
 
  What will be an ideal response?


anyusername12131

  • Sr. Member
  • ****
  • Posts: 327
Reply #1 on: Jul 26, 2018
Answer to Question 1

When large amounts of heat need to be transferred, the boiler is used to produce steam. This is due to the fact that about 970 Btu/lb of heat can be added to water at 212F and atmospheric pressure to change it into steam at the same temperature. This same amount of heat will be transferred to the air passing across a heating coil as the steam turns back into condensate.

Answer to Question 2

A closed breaker is on energized an open breaker is off de-energized..


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

Did you know?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Did you know?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

Structure of water and ice Structure of water and ice
Recruitment of Muscle Fiber Type Recruitment of Muscle Fiber Type
Coolant circulates through the water jackets in the engine block and cylinder head. Coolant circulates through the water jackets in the engine block and cylinder head.
This internal bypass passage in the thermostat housing directs cold coolant to the water pump. This internal bypass passage in the thermostat housing directs cold coolant to the water pump.
What is the freezing point of a solution of 2.86 g MgCl2 in 100 g of water? Kf for water is ... What is the freezing point of a solution of 2.86 g MgCl2 in 100 g of water? Kf for water is ...
A Bat Ray cruising through the water column below the "sunburst." Bat Rays are types of ... A Bat Ray cruising through the water column below the "sunburst." Bat Rays are types of ...
Video: How do the different types of chromatography work? (No Audio)

For a complete list of videos, visit our video library