HVAC 4 commercial and Refrigeration Final Questions and Answers (Graded A)
14 vistas 0 veces vendidas
Grado
HVAC 4 commercial and Refrigeration
Institución
HVAC 4 Commercial And Refrigeration
HVAC 4 commercial and Refrigeration Final Questions and Answers (Graded A)HVAC 4 commercial and Refrigeration Final Questions and Answers (Graded A)HVAC 4 commercial and Refrigeration Final Questions and Answers (Graded A)
On a low temperature defrost the fans stay running - ANSWER - False
On m...
HVAC 4 commercial and
Refrigeration Final Questions and
Answers (Graded A)
On a low temperature defrost the fans stay running - ANSWER - False
On medium temperature reach an evaporator with a box design temperature of 38
degrees, we normally need to us a planned defrost scheme - ANSWER - False
On a medium temperature walk in system the thermostat can deenergize the liquid
line solenoid at set point - ANSWER - True
Medium temperature systems sometimes use heated defrost - ANSWER - True
Pump down systems protect compressors from slugging - ANSWER - True
A medium temperature meat case can be at 25 degrees - ANSWER - True
The higher the TD of an evaporator, the higher the humidity in the box? - ANSWER -
False
Off cycle defrost on a medium temperature systems use heaters and time clocks -
ANSWER - False
Evaporator temperature affects the btu rating of a compressor - ANSWER - True
A walk-in refrigerator and an A/C system are both R22 and the ambient air at their
condensers is 95°. The AC units condensing temperature will be - ANSWER - A.
About the same as the walk-in refrigerator
, The evaporator temperature Hass to be lower than the box temperature because -
ANSWER - A. He goes to cold, the heat in the box must transferred to the refrigerant
in the evaporator
The condensing temperature have to be higher than the ambient temperature
because - ANSWER - A. The heat goes cold, The heat in the condenser must transfer
to the ambient air
A scroll compressor has fewer moving parts than a reciprocating compressor -
ANSWER - True
Hot gas injected is into an evaporator for load control - ANSWER - True
The approximate box temperature of a medium temperature system is - ANSWER -
C. 35 degrees
On a refrigeration system that has a glide, what do we use to calculate superheat -
ANSWER - B. Dewpoint
How much discharge superheat do we expect on our refrigeration compressors -
ANSWER - C. 30-60 degrees
The condensing unit on a medium temperature refrigeration system runs...... than a
comfort cooling condenser in the same environment with the same refrigeration -
ANSWER - C. About the same
One checking for sub cooling on a 407 a refrigeration system you need to use the...
On a PT chart - ANSWER - C. Bubble point
The condensing temperature Hass to be higher than the ambient air temperature
because - ANSWER - A. He goes too cold, the heat in the condenser must transfer to
the ambient air
Los beneficios de comprar resúmenes en Stuvia estan en línea:
Garantiza la calidad de los comentarios
Compradores de Stuvia evaluaron más de 700.000 resúmenes. Así estas seguro que compras los mejores documentos!
Compra fácil y rápido
Puedes pagar rápidamente y en una vez con iDeal, tarjeta de crédito o con tu crédito de Stuvia. Sin tener que hacerte miembro.
Enfócate en lo más importante
Tus compañeros escriben los resúmenes. Por eso tienes la seguridad que tienes un resumen actual y confiable.
Así llegas a la conclusión rapidamente!
Preguntas frecuentes
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
100% de satisfacción garantizada: ¿Cómo funciona?
Nuestra garantía de satisfacción le asegura que siempre encontrará un documento de estudio a tu medida. Tu rellenas un formulario y nuestro equipo de atención al cliente se encarga del resto.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller NursingTutor1. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for $12.99. You're not tied to anything after your purchase.
