Passive House Design 2

From the options below select an appropriate U value range for a Passivhaus?

• 0.10 - 0.15 W/m²K

• 0.21 - 0.27 W/m²K

• 0.17 - 0.20 W/m²K

• 0.19 - 0.23 W/m²K

From the options below choose the statement which best defines "Thermal Bridging"

• Thermal Bridging is the prevention of heat loss in a building.

• Thermal Bridging is when materials that are poorer insulators than surrounding materials come in contact; allowing heat to flow through the path created.

• Thermal Bridging is a property that enables building materials to absorb, store, and later release significant amounts of heat.

• Thermal Bridging is the transfer of heat from room to room via the MVHR system.

The image above shows a blower window test to check the airtightness level of the structure: 

• True

• False

From the list below, choose the statement which best describes "wicking" of insulation

• Wicking is the positive effect on an Insulation's performance caused by air movement.

• Wicking is the loss of heat through a structure due to materials that are poorer insulators coming in contact with cold surrounding surfaces.

• Wicking is the term given to Insulation when it is performing at its optimum

• Wicking is the negative effect on an Insulation's performance caused by air movement.

From the list below please select the option that states Passivhaus standard for Airtightness

• 7 ach

• 9 ach

• 0.6 ach

• 0.9 ach

When testing the airtightness of a Passive House; a Bloewer Door Test is used. From the list below select the pressure which is applied to the house during this test?

• 50 Pa

• 60 kPa

• 50 kPa

• 60 Pa

Please select if the following statement is True or False:

Applying an airtightness membrane to the inner leaf of a timber frame wall is the only way in which it can be made airtight.

• True

• False

When a service penetrates the airtightness membrane it must be sealed to prevent airleakage.

From the list below identify the mechansim that ensures that there is no airleakage through the membrane.

• Wallace

• Grommet

• Washer

• Scrim Tape

From the list below please select the advantages of the MVHR system

• Remove Stale Air

• Increase Air Infiltration

• Maintain adequate Heating and Cooling

• Energy Efficient