Energy Building Performance Flashcards
Learn 100%
Why is energy conservation in the home important?
Buildings that operate more efficiently have a reduced energy demand. That means lower operating costs.
State ways in which energy can be conserved in a house. (9)
Switching off Draft matts Care in the kitchen Shower heads Time in the shower Heating Lighting Micro-generation Light bulbs
Explain how Draft Matts can improve energy conservation.
In most homes heat escapes trough doors, windows and chimneys.
Draft proofing costs £200 but saves £35/year.
Explain how Micro-generation can improve energy conservation.
Biomass boiler would not only save you money, but would be a source of income.
What where BEDZeds performance advantages? (3)
Space heating requirements - 80% less
Hot water consumption - 57% less
Electricity usage - 25% less
What are the economic benefits of energy conservation in the home? (1)
Reduced running costs such as heating and lighting.
Suggest 2 ways in which a person could reduce their individual ecological footprint. (2)
- Eat less meet, turn vegetarian.
- Use public transport and car pool.
How might a government go about trying to reduce their ecological footprint? (2)
Introduce levy’s and taxes on items such as meat to encourage people to eat more vegetables.
Outline 3 ways that BED-Zed was designed to be a sustainable project. (3)
- Triple glazing windows
- Increased insulation
- Passive solar design
What types of things might a person do to reduce their energy use in the home?(2)
- Attach water efficient shower heads
- Draft proof their windows and windows
List 3 critical factors that influence the energy efficiency of a building as listed in the specification. (3)
- Triple glazing windows
- Air tightness
- Insulation
Define what is meant by the U-Value of a construction material. (2)
The rate at which heat conducts through 1m2 of material, for the temperature difference between inside and outside.
What is the equation for the rate of heat flow?
Q = A x U x T
A wall is said to have a heat loss of 55W. Describe in words what this means.
55 joules pass through the wall in one second
What building regulation was used up until 2015 for ensuring that new homes took energy conservation into consideration? (2)
Building Regulation L1A 2006, Conservation of fueland power in new dwellings.
A new code was released with the aim of taking the performance of buildings above this minimum threshold. Mention its name, when it was published and when it was removed from government policy. (3)
- Code for sustainable homes.
- Published in 2006, operational in 2007.
- Removed March 2015.
Make reference to the new code for homes which will be operational from 2016 on wards. List the 3 associated levels for this new legislation.
Zero Carbon Homes 2016
1 - Allowable solutions.
2 - Low carbon heat and power.
3 - Fabric efficiency.
Mae reference to the Kg of CO2/m2/year in the old codes, and the new codes. How can a contractor ensure that he gets below the new threshold?
- Old code - 28 Kg/CO2/m2/year
- New code - 11 Kg/CO2/m2/year
The 2 lower levels of Zero Carbon Hierarchy is used to d lower the value below 11 Kg.
Name the 3 levels of the Zero Carbon Homes policy.
1 - Allowable solutions.
2 - Low carbon heat and power.
3 - Fabric efficiency.
Describe 2 measures that could be taken to improve energy efficiency of the outside wall of a bedroom.(2)
Adding additional insulation (Cavity) to the external wall.
Improved glazing improve air tightness around windows
State 1 environmental benefit gained by installing insulation in the loft.(1)
Increased levels of home comfort.
What is the top level of the ZCH hierarchy? (1)
Allowable solutions.
What is the bottom level of the ZCH hierarchy?(1)
Fabric energy efficiency.
Explain 2 core requirements for a ZCH. (2)
The fabric performance must, at a minimum, comply with the Fabric Energy Efficiency Standard (FEES) [1]
CO2 that remains after consideration of heating, cooling, fixed lighting and ventilation, must be less or equal to the Carbon Compliance limit [1]
