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SRT257 Building Environmental Studies
GENERAL INSTRUCTIONS
1. This document is to be read in conjunction with the Unit Guide for this unit.
2. It is the responsibility of each student to confirm submission requirements, including date, time, and format.
3. Extension or Special Consideration may be considered for late submissions. It is the responsibility of each student to understand Deakin regulations regarding late submission and Special Consideration for assessment. You do not require Special Consideration for an assignment extension. You must request an extension as soon as you are aware there will be an issue with meeting the deadline, and making a request for an extension does not guarantee that this request will be granted. Extension requests must be submitted to the Unit Chair using the Extension Request Tool in Cloud Deakin, with supporting documentation of the reason for the request and evidence of the progress of work on the assignment. See https://www.deakin.edu.au/students/study-support/assessments-and-examinations/assessments
4. You will be required to complete Assignment 1 and Assignment 2 individually, and Assignment
3 in a group of no more than 5 students.
5. All assignments, unless otherwise stated, must be submitted electronically through CloudDeakin.
6. Unless otherwise stated, all assignments submitted through CloudDeakin must be in Portable Document Format (pdf).
7. You may refer to publications, but you must write in your own “voice” and cite the references using the Author-Date (Harvard—Deakin) system (see http://www.deakin.edu.au/students/studying/study-support/referencing/harvard). It is essential for you to fully understand what you write and to be able to verify your source if you are requested to do so later. The library provides workshops and advice on citations and referencing.
8. The University regards plagiarism as an extremely serious academic offence. Submission through CloudDeakin includes your declaration that the work you have submitted is entirely your own. Please make full use of the ‘Check Your Work’ folder in the Dropbox tab on CloudDeakin.
9. If you are not clear about the requirements of the assignments, please seek guidance as soon as possible.
10.Before starting your assignments, please access the University’s Study Support web page for useful advice: http://www.deakin.edu.au/students/studying/study-support School of Architecture and Built Environment
ASSESSMENT SCHEDULE:
No
|
Assignment
|
Mark
(%)
|
Mode
|
Submission Date
|
Format
|
1
|
Construction site-based climate report
|
30
|
Individual
|
Week 4 (01 August), Friday by 8:00 pm (AEST) through CloudDeakin
|
Written report in PDF
|
2
|
Heating/Cooling Calculation/LCA
|
30
|
Individual
|
Week 7 (29 August), Friday by 8:00 pm (AEST) through CloudDeakin
|
Written report in PDF
|
3
|
Final group report and presentation video
|
40
|
Group
|
Week 12 (03 October), Friday by 8:00 pm (AEST) through CloudDeakin
|
Written report in PDF and Presentation Video
|
|
|
100
|
|
|
|
BRIEF DESCRIPTION AND UNIT LEARNING OUTCOMES
Brief description of assessment task:
This assessment task requires students to provide written responses to heating/cooling/life cycle analysis.
ASSESSMENT TASK
There are three task options for assignment 2, and you only need to choose one that is interesting to you. Assignment 2 will be completed INDIVIDUALLY by each student. The options for assignment 2 are listed below:
Option 1: Heating load calculations
By completing this assignment, you are expected to learn how to use simple heating load calculations to estimate the peak heating loads and the annual heating load for a house. By allocating costs to the supply of energy and the cost of various wall, roof and window construction options, estimates are to be made of payback periods for these options. You will use these energy use and cost estimates to inform practical and cost-effective construction recommendations that reduce energy use.
Before you begin the calculation, you must find out the area of all the different materials that comprise the external envelope. You will also need to find out the R-values or U-values of all these materials. You can find these values from various sources. If your material is not listed, use the material that is the closest to it in terms of its thermal properties – or you might find out the R-values or U-values from manufacturers' data (available via the internet). Note that glazing design, e.g., single-glazing or double-glazing, can have a significant impact on the energy-saving potential of a house, considering different climatic conditions. Generally, double-glazed windows will reduce heat loss, and even though they cost more, they will result in lower operating costs. You are asked to do two calculations: one where single-glazed windows are chosen for the project, and the other with double-glazed windows selected.
Instructions
Complete the following tasks with the following assumptions:
▪ Assume 0.5 air changes /hour
▪ Indoor design temperature 21 °C
1) Calculate the peak heat loss rate, the steady heat loss rate and the annual space-heating load assuming the windows are single-glazed.
2) When you have finished task 1, redo the calculation with all the windows being double- glazed.
3) Make cost-effective construction recommendations that reduce energy use (e.g., discussion of glazing alternatives, calculation of U-value and payback periods, description of cost implications).
4) Discuss the implications of your findings for the redesign of the case study.
Note:
• Use diagrams (section view) to show the material composition of each building envelope;
• Clearly explain how the U-values were derived, and provide sources for the figures used.
Option 2: Cooling load calculations
By completing this assignment, you are expected to learn how to use simple cooling load calculations to estimate the peak cooling load due to different elements of a house envelope and the total annual cooling load for a house. By allocating costs to the supply of energy and the cost of various wall, roof and window construction options, estimates are to be made of payback periods for these options. You will use these energy use and cost estimates to inform practical and cost-effective construction recommendations that reduce energy use for cooling.
Before you begin the calculation, you must find out the area of all the different materials that comprise the external envelope. You will also need to find out the R-values or U-values of all these materials. You can find these values from various sources. If your material is not listed, use the material that is the closest to it in terms of its thermal properties – or you might find out R values or U-values from manufacturers' data (available via the internet). Note that an awning is a device that provides outdoor shading. Inside shading refers to a blind or "a shade" that can be pulled down to block direct sunlight on the inside of the glass.
You are asked to do two calculations. One where there is no impediment to the sun coming into the building (use values from Table 2 marked "no awnings or inside shade") and another calculation with all the windows shaded (use values from Table 2 marked "Awnings").
Instructions
Complete the following tasks with the assumption:
▪ Assume 0.5 air changes /hour
▪ Internal temperature 25.7 °C and outside design temperature of 35 °C
▪ The outdoor temperature range is 12 °C
▪ Four occupants, one kitchen
2) For the case study, assuming there are no awnings, overhangs, trees, etc., to shade the windows, calculate the peak cooling load.
3) When you have finished task 1, redo the calculation with all the windows appropriately shaded and obtain the new peak cooling load.
4) Make cost-effective construction recommendations that reduce energy use (e.g. description of cost implications, discussion of different shading schemes and payback periods, description of cost implications).
5) Discuss the implications of your findings for the redesign of the case study.
Note:
• Use diagrams (section view) to show the material composition of each building envelope;
• Clearly explain how the U-values were derived, and provide sources for the figures used.
Option 3: Life Cycle Analysis
You will analyse what materials are used for the building envelope of the case study house, and calculate the embodied energy and emissions based on calculated material quantities and embodied factors from inventories. Detailed tasks include:
1) Analysing the materiality of the external envelope for each element, such as the exterior wall, roof, window, and floor. You may use graphics to illustrate the material layers and material types.
2) Quantifying the primary materials: you need to calculate the material volume and then convert it to weight (kg) for each type of material;
3) Calculating embodied energy and CO2 : you need to look up embodied factors listed in the inventory, and then calculate the embodied energy and emissions using material weight and embodied factors;
4) Analysing the recyclability of the relevant materials.
• Whether it was made from a renewable source;
• How recyclable it is and/or whether it could be substituted by recycled material.
5) Discussing the implications of your findings for the redesign of the case study house. Completing this assignment will help you to learn: (1) what a house is built of; and (2) how the selection of materials used might affect a building’s ecological performance.
Note:
• You might use drawings or figures to label the materiality in your report.
• You may use the suggested inventory to look up embodied factors: http://www.organicexplorer.co.nz/site/organicexplore/files/ICE%20Version%201.6a.pdf