Chapter 12 - Quiz

Frage 1 von 20

1

In systems that are open to the atmosphere, such as a non-pressurized thermal storage tank, the volume increase of heated fluid is accommodated by an expansion tank.

Wähle eins der folgenden:

WAHR
FALSCH

Erklärung

Frage 2 von 20

1

One inherent problem with standard expansion tanks is that the air and water they contain are in direct contact.

Wähle eins der folgenden:

WAHR
FALSCH

Erklärung

Frage 3 von 20

1

The air in a standard expansion tank is initially at atmospheric pressure.

Wähle eins der folgenden:

WAHR
FALSCH

Erklärung

Frage 4 von 20

1

Standard expansion tanks typically need to be drained and refilled with air at least once each year.

Wähle eins der folgenden:

WAHR
FALSCH

Erklärung

Frage 5 von 20

1

Many of the shortcomings of standard expansion tanks can be avoided by separating the air and water in an expansion tank.

Wähle eins der folgenden:

WAHR
FALSCH

Erklärung

Frage 6 von 20

1

The entire volume of system fluid reaches the maximum fluid temperature simultaneously.

Wähle eins der folgenden:

WAHR
FALSCH

Erklärung

Frage 7 von 20

1

Most modern diaphragm-type tanks use a butyl rubber or EPDM diaphragm.

Wähle eins der folgenden:

WAHR
FALSCH

Erklärung

Frage 8 von 20

1

It is good practice to install a pressure-regulator valve near the inlet of any expansion tank.

Wähle eins der folgenden:

WAHR
FALSCH

Erklärung

Frage 9 von 20

1

The expansion tank should always be connected to the system near the outlet port of the circulator.

Wähle eins der folgenden:

WAHR
FALSCH

Erklärung

Frage 10 von 20

1

Many systems with chronic "air problems" can be corrected by simply rearranging the piping so that the circulator pumps away from the point of no pressure change.

Wähle eins der folgenden:

WAHR
FALSCH

Erklärung

Frage 11 von 20

1

In a typical closed-loop hydronic system, the extra space caused by heated liquid is usually provided by a separate chamber called the expansion tank. This tank contains a volume of __________ that is compressed.

Wähle eine der folgenden:

air
gas
water
sludge

Erklärung

Frage 12 von 20

1

A software module called Expansion Tank Sizer in the Hydronics Design Studio software is an aid for determining tank size and __________.

Wähle eine der folgenden:

placement
pressurization
type
brand

Erklärung

Frage 13 von 20

1

When __________ occurs, there is no longer a cushion of air for the system's water to expand against.

Wähle eine der folgenden:

waterlogging
deaeration
thermal shutdown
hydraulic separation

Erklärung

Frage 14 von 20

1

The static pressure at the expansion tank connection when the system is filled is based on the height of the system piping above the expansion tank, the type of fluid used, and a customary allowance for __________ psi pressure at the top of the system for proper operation of the air vents.

Wähle eine der folgenden:

1.5
3.33
5.0
7.5

Erklärung

Frage 15 von 20

1

In a diaphragm-type expansion tank, since the diaphragm separates the fluid from the air, the air __________ the fluid.

Wähle eine der folgenden:

cools
easily combines with
is proportional to
cannot be reabsorbed by

Erklärung

Frage 16 von 20

1

A properly sized diaphragm-type expansion tank allows the pressure relief valve to reach a pressure of about __________ psi lower than its rated opening pressure when the system reaches its maximum operating temperature.

Wähle eine der folgenden:

1.25
3.33
5.0
6.66

Erklärung

Frage 17 von 20

1

Expansion tanks have maximum pressure and temperature ratings. This information is stamped on the label of the tank. Typical ratings are __________ psi and 240ºF.

Wähle eine der folgenden:

5.0
60.0
25.0
86.0

Erklärung

Frage 18 von 20

1

The __________ fixes the pressure of the system's fluid at its point of attachment to the piping. This is called the point of no pressure change.

Wähle eine der folgenden:

circulator
heat emitter
expansion tank
diaphragm

Erklärung

Frage 19 von 20

1

When __________ circulators are used, the header they connect to should be located close to and just downstream from the point where the expansion tank is connected.

Wähle eine der folgenden:

multiple zone
variable speed
hydraulic
single zone

Erklärung

Frage 20 von 20

1

It is __________ to install two or more expansion tanks at different locations within a system.

Wähle eine der folgenden:

standard procedure
a manufacturer's recommendation
not advisable
the user's requirement

	Erstellt von Neil Revollo vor fast 8 Jahre

Expansion Tanks

Chapter 12 - Quiz

Frage 1 von 20

In systems that are open to the atmosphere, such as a non-pressurized thermal storage tank, the volume increase of heated fluid is accommodated by an expansion tank.

Wähle eins der folgenden:

Erklärung

Frage 2 von 20

One inherent problem with standard expansion tanks is that the air and water they contain are in direct contact.

Wähle eins der folgenden:

Erklärung

Frage 3 von 20

The air in a standard expansion tank is initially at atmospheric pressure.

Wähle eins der folgenden:

Erklärung

Frage 4 von 20

Standard expansion tanks typically need to be drained and refilled with air at least once each year.

Wähle eins der folgenden:

Erklärung

Frage 5 von 20

Many of the shortcomings of standard expansion tanks can be avoided by separating the air and water in an expansion tank.

Wähle eins der folgenden:

Erklärung

Frage 6 von 20

The entire volume of system fluid reaches the maximum fluid temperature simultaneously.

Wähle eins der folgenden:

Erklärung

Frage 7 von 20

Most modern diaphragm-type tanks use a butyl rubber or EPDM diaphragm.

Wähle eins der folgenden:

Erklärung

Frage 8 von 20

It is good practice to install a pressure-regulator valve near the inlet of any expansion tank.

Wähle eins der folgenden:

Erklärung

Frage 9 von 20

The expansion tank should always be connected to the system near the outlet port of the circulator.

Wähle eins der folgenden:

Erklärung

Frage 10 von 20

Many systems with chronic "air problems" can be corrected by simply rearranging the piping so that the circulator pumps away from the point of no pressure change.

Wähle eins der folgenden:

Erklärung

Frage 11 von 20

In a typical closed-loop hydronic system, the extra space caused by heated liquid is usually provided by a separate chamber called the expansion tank. This tank contains a volume of __________ that is compressed.

Wähle eine der folgenden:

Erklärung

Frage 12 von 20

A software module called Expansion Tank Sizer in the Hydronics Design Studio software is an aid for determining tank size and __________.

Wähle eine der folgenden:

Erklärung

Frage 13 von 20

When __________ occurs, there is no longer a cushion of air for the system's water to expand against.

Wähle eine der folgenden:

Erklärung

Frage 14 von 20

The static pressure at the expansion tank connection when the system is filled is based on the height of the system piping above the expansion tank, the type of fluid used, and a customary allowance for __________ psi pressure at the top of the system for proper operation of the air vents.

Wähle eine der folgenden:

Erklärung

Frage 15 von 20

In a diaphragm-type expansion tank, since the diaphragm separates the fluid from the air, the air __________ the fluid.

Wähle eine der folgenden:

Erklärung

Frage 16 von 20

A properly sized diaphragm-type expansion tank allows the pressure relief valve to reach a pressure of about __________ psi lower than its rated opening pressure when the system reaches its maximum operating temperature.

Wähle eine der folgenden:

Erklärung

Frage 17 von 20

Expansion tanks have maximum pressure and temperature ratings. This information is stamped on the label of the tank. Typical ratings are __________ psi and 240ºF.

Wähle eine der folgenden:

Erklärung

Frage 18 von 20

The __________ fixes the pressure of the system's fluid at its point of attachment to the piping. This is called the point of no pressure change.

Wähle eine der folgenden:

Erklärung

Frage 19 von 20

When __________ circulators are used, the header they connect to should be located close to and just downstream from the point where the expansion tank is connected.

Wähle eine der folgenden:

Erklärung

Frage 20 von 20

It is __________ to install two or more expansion tanks at different locations within a system.