Basic HVAC science

What is the latent heat of vaporization for 3 lbs of water?

• 970btu

• 144btu

• 2910btu

• 432btu

Tags

CCSS.6.RP.A.3D

What is the latent heat of solidification for 1 lbs of water?

• 970btu

• 144btu

• 2910btu

• 432btu

Which process requires more energy sensible or latent heating or cooling of a substance?

• Latent

• Sensible

• both are the same

• none of these are correct

What is a U-Factor?

• A measurement of Insulation

• A measurement of temperature

• A measurement of thermal conductivity

• 0.076

What ways can heat be transferred?

• Conduction

• Convection

• Radiation

• Currents

How many Btu's are in a ton of cooling?

• 288,000btu/day

• 14,000 btu/hr

• 200 btu/min

• 12,000 btu/day

Tags

CCSS.6.RP.A.3D

Our three types of flow are Parallel, Counterflow and Cross flow.

• true

• false

1 ft of water pressure is = to 4.33 psi.

• true

• false

Atmospheric pressure is 14.7 psia. Pick all of the corresponding measurements that are the same as atmospheric pressure.

• 0 psig

• 760,000 microns

• 29.92 in Hg

• 14.7 psig

We have 2 pressure gauges on either side of a pump. 1 gauge is 3' off of the floor the other is 4' up. Can we use these gauges without correcting for elevation?

• yes

• no