Heat Pump Test ( Week 3)

The temperature split across an indoor coil is normaly equal to a range of 17° to 21°.

• True

• False

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

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

• gas

• hot vapor

• suction

• liquid

Typically, the minimum air flow for heat pump applications is __________________.

• 400 fpm/ton

• 400 cfm/ton

• 350 fpm/tom

• 450 cfm/ton

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

In the cooling mode, the refrigerant in the gas line is at a __(1)__ temperature and flowing __(2)__ the indoor coil.

• 1) - low

  (2) - away from

• (1) - high

  (2) - towards

• (1) - high

  (2) - away from

• (1) - low

  (2) - towards

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

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.MS-PS3-3

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.MS-PS3-3

NGSS.MS-PS3-4

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

• 700 fpm

• 1500 fpm

• 300 fpm

• 300 cfm

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

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