Heat Pump

The vapor line (gas line) of a heat pump system is sized to provide a minimum velocity of __________ in a horizontal run.

• 700 cfm

• 1500 fpm

• 700 fpm

• 1500 cfm

In the heating mode, which way is the liquid refrigerant inside the liquid line flowing?

• from the compressor to the indoor coil

• from the indoor coil to the outdoor coil

• from the compressor to the outdoor coil

• from the outdoor coil to the indoor coil

Tags

NGSS.HS-PS3-4

One of the reasons that the heat pump is so efficient is because it can achieve supply air temperatures similar to that of fossil-fuel (gas/oil) systems, usually around 140°F.

• True

• False

Tags

NGSS.HS-PS3-4

The supply airflow of a heat pump is typically directed to the _______________ by the diffusers and grilles.

• interior walls

• perimeter walls

• middle of the room

• middle of the room

Tags

NGSS.HS-PS3-4

Nomenclature for the heat pump is different than a straight air conditioning system.  The large insulated copper line connecting the indoor and outdoor coils is known as the _______________.

• hot vapor

• cool vapor

• suction

• gas

The velocity of the refrigerant in the liquid line is normally __________ or less.

• 700 fpm

• 1500 fpm

• 300 fpm

• 300 cfm

A device that removes heat from a cold body and transfers it to a hot body

• Heat Engine

• Heat Pump

• Steam Engine

• Carnot

Tags

NGSS.HS-PS3-4

What device is being shown in the picture?

• Heat Engine

• Refrigerator

• Hot Reservoir

• Heat Pump

Tags

NGSS.HS-PS3-4

Heat Engine is a device that transforms thermal energy into mechanical energy.

Heat Pump is device that removes heat from a cold body and transfers it to a hot body

• is correct

• is correct

• Both are correct

• Neither of these options are correct

Tags

NGSS.HS-PS3-4

The mode or cycle of the heat pump that removes ice from the outdoor coil is known as the ____________________ mode.

• heating

• defrost

• cooling

• off-cycle

Tags

NGSS.HS-PS3-4