What does "ACH" stand for?

• Air Circulation and Heating

• Air Changes per Home

• Air Changes per Hour

• Atmospheric Convection Heat

What is Flow Rate?

• volume of fluid that moves through a system per unit of time

• Flow rate is the speed at which a fluid moves.

• Flow rate is the pressure of a fluid as it moves through a pipe.

• Flow rate is the total amount of fluid in a system at any given time.

True or false: The recommended Flow Rate for a room depends on the use

• True

• False

What is the correct formula for calculation of air velocity in a pipe

• V/A

• q/V

• q*V

• A*v

True or false: The air velocity is independent of the noise

• True

• False

What happens with pipe's area if we increase the velocity

• It stays the same

• It decreases

• It increases

• Depends on the pipe material

What is the relation between Thermal transmittance and Thermal Resistance?

• U = Rt

• U + Rt = 1

• U = 1 / Rt

• 1 + Rt = U

Thermal bridge is where all the ________ escapes from a room

• Pressure

• Air

• Heat

• Flow rate

How can we avoid thermal bridges

• Constant Flow Rate

• Ventilation and air renewal

• Continuity of insulation envelope

• Using better materials for construction

The three modes of heat transfer are:

• Air, Water and Fire

• Conduction, Convection and Radiation

• Burning, Melting and Exploding

• Evaporation, Condensation and sublimation