7 Energy Building Performance PPQ

Question 1

Environmental benefit of insulation in houses

Answer 1

Less FF burned to produce same amount of heat in house

Question 2

1 economic and 1 environmental benefit of wall cavity insulation

Answer 2

Reduces heating bill

Reduce carbon emissions

Question 3

2 ways to minimise home heating consumption

Answer 3

Turn thermostat down

Close windows and doors

Question 4

2 ways to improve energy efficiency outside a bedroom

Answer 4

Wall cavity insulation

Air tightness: silicon gun to window frame

Improve/upgrade glazing

Question 5

Describe one energy efficiency measure which could be implemented on a window and explain why this measure would improve the energy efficiency of the window.

Answer 5

Sealing edges improves air tightness

Improve Glazing reduces U value

Question 6

Define what is meant by the U-Value of a construction material. {2}

Answer 6

rate at which heat is conducted away through 1m2 of the material for each 1 degree difference in temperature {1} between the outside and the inside of the building {1}.

Question 7

Equation for heat flow through building

Answer 7

Q = U x A x deltaT

Q rate of heat flow
U u value
A area
Delta T temperature difference

Question 8

Recall zero carbon homes hierarchy (top to bottom of pyramid)

Answer 8

Allowable solutions
On-site low carbon heat and power
Fabric energy efficiency

Question 9

Explain two core requirements for a Zero Carbon Home.

Answer 9

• The fabric performance must, at a minimum, comply with the Fabric
Energy Efficiency Standard (FEES) {1}.
• Any CO2 emissions that remain after consideration of heating, cooling, fixed lighting and ventilation, must be less than or equal to the Carbon Compliance limit established for zero carbon homes {1}.
• Any remaining CO2 emissions, from regulated energy sources (after requirements 1 and 2 are met), must be reduced to zero {1}.