Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Principles of Industrial Measurements > Test 2 > Flashcards

Test 2 Flashcards

1
Q

The measurement of how much water the air has absorbed at a given temperature.

A

Relative Humidity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Device used in a cooling tower to keep water from blowing out.

A

Drift Eliminators

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

___ is a term applied to the horizontal direction that air takes in relationship to the downward flow of water in a cooling tower. ___ is a term applied to the vertical flow of air as it moves through a cooing tower in relationship to the downward flow of water.

A

Cross and Counterflow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What isn’t an objective of water treatment

A

Water Deionization

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Heat that can be measured or sensed is referred to as

A

Sensible Heat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

The approach to tower is the

A

Change in temperature that exists between water entering and leaving the cooling tower.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Dry bulb temperature is the

A

Air temperature as measured by a dry-bulb thermometer.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

The wet bulb temperature is the

A

air temperature as measured by a bulb thermometer covered by a water saturated wick. Takes into account the relative humidity.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

A cooling tower is classified by

A

How it produces air flow; mechanical or natural. And how the air flows in relation to the downward flow of water; cross or counter current.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

The temperature change that exists between the water leaving the tower and the wet bulb temperature of the air entering the tower.

A

Approach to Tower

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

A device used in a cooling tower to break up and redirect the flow of falling water.

A

Splash Bars

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Vents located on the side of a cooling tower.

A

Louvers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Mechanical draft towers use fans to force air in ( ___ draft) or pull air out ( ____ draft).

A

Forced draft and Induced draft

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Air moves through a (forced draft or induced draft) at a higher rate. What happens to the flow rate at the discharge point.

A

Forced, flows-down, 20% efficiency decrease

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The measure of how much water the air has absorbed at a given temperature.

A

Relative Humidity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

A term applied to fluid flow that is directed into one piece of equipment before exiting and entering another. Example heat exchanger

A

Series Flow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

A pipe that even disperses hot water over the fill of a cooling tower.

A

Water distribution header and hot water inlet to cooling tower

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

A post used to support the framework of a cooling tower.

A

Treated wood column and plastic column.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Hyperbolic towers are primarily designed for service in what industry?

A

Power Plants

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

A common term used to describe the internal buildup on the surface area of a heat exchanger that results in restricted flow.

A

Fouling

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Results when electrochemical reactions occur between metal surfaces and surrounding hot water that results in the gradual wearing away of metal.

A

Corrosion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Sensible heat transfer accounts for ___ to ___ of the cooling effect in a cooling tower.

A

10%-20%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Which tower is most efficient, forced or induced? What happens to the flow rate at the discharge point?

A

Induced, speeds-up, efficiency increases.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

The efficiency of a tower is tied to all of the following factors except:

A

Personnel (but not really)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

A term applied to fluid flow that is equally distributed to multiple pieces of equipment. Example heat exchanger

A

Parallel Flow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

___ draft cooling towers use natural forces to bring air into a cooling tower while ___ draft towers use fans to induce or force air into a tower.

A

Natural and Mechanical

27
Q

Which hyperbolic tower gets higher air flow; counter-flow, cross-flow?

A

Cross-flow

28
Q

Which hyperbolic tower is more efficient; counter-flow, cross-flow?

A

Counterflow

29
Q

A type of boiler that passes hot gases through tubes to heat up and vaporize water.

A

Fire Tube Boiler

30
Q

A group of gas filled tubes in a natural gas burner.

A

Spuds

31
Q

A steam trap that operates by opening or closing a bellows as the temperature changes. This movement opens and closes a valve.

A

Bellows trap

32
Q

A type of steam trap that is controlled by temperature changes.

A

Thermostatic steam trap

33
Q

A boiler is most closely defined as a

A

Device used by industry to boil water and produce steam

34
Q

Boiler load is most closely defined as a

A

Plants demand for steam

35
Q

The steam generating drum is typically operated:

A

Half Full

36
Q

The downcomer is connected to:

A

Steam generating drum and mud drum

37
Q

The water make-up system takes its level measurement from the:

A

Deaerator and steam generating drum.

38
Q

Fans are used in a water tube boiler system to:

A

Control oxygen flow rate

39
Q

The deaerator has the following flows in and out except:

A

Steam generating drum (out)

40
Q

The coolest tube in the boiler system is the:

A

Water make-up

41
Q

The burners in a water tube boiler are surrounded by which tubes:

A

steam generating tubes

42
Q

Flow moves in the opposite direction in these tubes.

A

Downcomer and steam generating, Riser and downcomer

43
Q

The steam generating tubes are connected to the:

A

Mud drom and steam generating drum

44
Q

A boiler utilizes the following furnace design:

A

Direct fired furnace
Firce and water tube
Indirect fired furnace

45
Q

The convection section in a fired heater most closely resembles the ___ section in a boiler.

A

Economizer

46
Q

Steam i used in what 4 applications

A

Heat exchangers
Steam turbine
Distilation systems
Laminating

47
Q

Used to evenly distribute air and fuel vapors over an ignition source and into a boiler firebox.

A

Burner

48
Q

A section of the boiler utilized to preheat feed water before it enters the main boiler system.

A

Economizer section

49
Q

As steam flows from the boiler to the plant it begins to cool. When steam cools it forms ___

A

Condensation.

50
Q

Slugs of water can damage equipment and lead to a condition known as:

A

Water Hammer

51
Q

The inlet line to the tower (drum) header.

A

Downcomer

52
Q

The principle reason water circulation occurs in a water tube boiler is because of:

A

Natural buoyancy forces

53
Q

The shortest discharges line from the lower (drum) header.

A

Riser

54
Q

Some processes can not take superheated steam so a process know as ___ is applied to remove the additional heat.

A

desuperheated steam

55
Q

A steam trap that operates with an upside-down bucket inside a casing. It is effective on condensate and non-condensing vapors.

A

Inverted bucket trap

56
Q

The lower drum (header)

A

Mud drum

57
Q

Steam that is removed from the water and heated up to a higher temperature.

A

Superheated steam

58
Q

A device used to separate liquids from gases and return them to a condensate header.

A

Steam trap

59
Q

A steam trap that operates with a float that opens a valve as the condensate level rises.

A

Float trap

60
Q

There is a direct correlation between steam temperature and:

A

Pressure

61
Q

Super high pressure steam is between:

A

1000-1200 psig

62
Q

The primary purpose of a condensate recovery system is:

A

Save money
Return water to boiler
Remove slugs of water from steam

63
Q

5 operating problems associated with steam generation

A 
Tube rupture
Soot buildup
Loss of water flow
Flame impingement
Scale and water purity

Principles of Industrial Measurements (2 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions