Domestic retrofit operational carbon

This assignment will focus on the development of a sustainable retrofit plan for a typical dwelling in Wales. There are three parts to
the assignment.
Part 1 – Domestic retrofit operational carbon
This assignment will create a low carbon retrofit plan for a typical welsh house. The Welsh Government has accepted in principle
the advice from the Independent review on decarbonising Welsh homes: report “Better Home, Better Wales Better World” that all
social homes should achieve an Energy Performance Certificate rating of A (SAP rating of 92).
You will need to model the reduction in Carbon emissions using the SAP Excel Worksheet the target is to achieve a SAP rating of

  1. This target will achieve the carbon reductions and ensure that the house is affordable to heat. The house has recently had an
    Air Source Heat Pump installed so this should not be changed
    To achieve your goal, you can alter the;
    • fabric,
    • ventilation,
    • renewable systems.
    You will need to discuss the feasibility of the installation, cost of installation and whether the alterations must be fitted
    simultaneously or can be fitted in a step by step manner.
    Part 2 – Carbon footprint of a building element
    The assignment will require each student to research and critically evaluate the cradle to grave carbon footprint of a building
    element (from here on referred to as “element”) which you have altered in Part 1 Domestic retrofit operational carbon.
    The work will be assessed for demonstrated understanding of the factors and methods that must be considered when calculating a
    carbon footprint. For the selected element, at least two different materials or construction methods should be considered. A
    conclusion should be made as to which would be preferred in terms of carbon footprint and why. The selection of the element
    material should include an assessment of the element’s function and the material’s fitness for purpose. Examples of elements for
    study:
    Low Carbon Buildings Assignment –
    Retrofit House
    Written Assessment
    Marking Criteria
    March 2021
    • Walls
    • Floor
    • Roof
    • Windows/Doors
    • Insulation
    Sources of information:
    Refer to the sources identified in the lecture. You may also find the following resources of use:
    • electronic journals available through the library catalogue
    • Construction Information Service (the link is near the bottom of the webpage)
    https://intranet.cardiff.ac.uk/students/study/libraries/subject-support/information-resources-for-your-subject/architecturelibrary-databases
    • Other internet sources
    • The Environment Agency carbon Calculator (On Learning Central in Learning material – Week 2)
    Part 3 – Operational vs Embodied Carbon
    Compare the Operational Carbon (Part 1) over the lifetime of the measure chosen (e.g. a external wall insulation will last 30 years)
    against the saving in Embodied Carbon (Part 2).
    Low Carbon Buildings Assignment –
    Retrofit House
    Written Assessment
    Marking Criteria
    March 2021
    Submission details
    Your submission should be in the form of a report on all the changes you have made. You will need to explain the solutions you
    have chosen,
    • Part 1
    o The items you have chosen to change in the spreadsheet,
    o their feasibility,
    o cost implications
    o do the alterations have to be fitted simultaneously or can they be fitted in a step by step manner
    • Part 2
    o the carbon footprint of an “element” as described above.
    • Part 3
    o compare the Operational Carbon (Part 1) of the building element over the lifetime of the measure chosen against the
    saving in Embodied Carbon (Part 2).
    The report should be 2500 words maximum (maximum 12 sides of A4 including figures). THIS ASSIGNMENT IS WORTH 10
    CREDITS
    Electronic submission date – Tuesday 27
    th April 2021 by 17:00
    Use only your student number to identify your work, not your name.
    The report should be submitted through Learning Central as a file in pdf format.
    The file name should be LCF_2020-21_StudentNumber.pdf
    NB: Please note that the submission of pdf format ensures that formatting is not lost in transfer between different versions of software.
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