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UO Building Services Assessment 1 Part A 2022 SP6 Page 1/4 UO Building Services - Assessment 1 Part A Assessment Name Assessment 1 – Project – Part A - Air Conditioning Systems, Calculations & Hydraulic Services Submission Dates/Times 12 noon Adelaide time Monday 24 October 2022 (Monday of Week 6) Weighting 30% of the total grade for this course File types to submit One*.doc or *.docx file with a maximum file size of 50MB PART A: AIR CONDITIONING SYSTEMS, CALCULATIONS & HYDRAULIC SERVICES (30%) RATIONALE Statutory Authorities must be consulted with during the design and construction of Mechanical, Electrical and Hydraulic systems. Therefore, understanding their roles and how they assist the design team is extremely important. Question 1 is aimed at briefly describing these authorities and how they can drive the design process of a project. There are many different types of air conditioning systems that engineers can choose to use during the design of a building. Some systems are more suited to projects than others. The two most popular types of systems are one-on-one type and variable refrigerant volume type air conditioning systems. Question 2 will review both types and the pros and cons of each system. Trade waste systems are used on certain projects to ensure pollutants to not enter the sewer systems that may affect the way these systems operate. Grease arrestors are one way grease can be removed from wastewater prior to entering the sewerage system. Question 3 is aimed at briefly describing what a greaser arrestor is and when they must be used in a project. Finally, Psychrometrics describes the fundamental thermodynamic process that drives how all air conditioning system performs. It is important to relate any design of an air conditioning system back to these fundamental basics. Question 4 will demonstrate your understanding of a Psychrometric chart and how system capacities and airflows are determined. One of the Graduate Qualities at the University of South Australia is that a graduate communicates effectively in professional practice and as a member of the community. This means that the standard of communications expected is what one would expect from a degree-qualified individual in the workplace. COURSE OBJECTIVES • CO 1 Demonstrate the scientific principles which underpin the operation of specific building service engineering functions. • CO 2 Interpret the design and operation of supply services in domestic and commercial construction. • CO 3 Assess the design and operation of conditioning internal environments and other engineering services systems in multi-storey buildings and the implications that such systems have in the construction process. • CO 4 Summarise the building surveying context of building services. • CO5 Display information on building service engineering functions using Building Information Models individually or in teams. ASSESSMENT ONE: Project – Building Services Design, Documentation, Integration, Commissioning & BIM (70%) UO Building Services Assessment 1 Part A 2022 SP6 Page 2/4 ASSESSMENT SUMMARY COMPONENTS COURSE OBJECTIVES WEIGHTING (% of course grade) DUE DATE DETAILS SUBMISSION PROCESS Part A: Air Conditioning & Hydraulic Services CO 1, 2, 3, 4 30% Monday 12pm Week 6 1400 words Learnonline Part B: Coordination of services CO 3 & 5 36% Monday 12pm Week 10 1000 words plus 2 CAD drawings Learnonline Part C: BIM Model Interrogation CO5 10% Friday 12pm Week 10 600 words equivalent Learnonline Total: 76% of course grade CRITERIA FOR MARKING • Conceptual understanding demonstrated through explanation of key concepts related to the operation of specific building service engineering functions, using relevant information and sources. (75%) • Quality Sources, Evidence and Referencing (10%) • Written Communication (15%) Part A Report – General Instructions Submit your file through the submission link by 12 pm, Monday of Week 6. a) Prepare a 1400-word (+10% /-20%) report in response to each question listed below in Report Specifications. If using equation editor, the word count may be up to 20% less than 1400 words (approx. 1100 words) as using equation editor can count 1 word per line of calculation. b) Download a copy of the rubric (feedback form) and use it to make sure you have addressed the criteria listed for this assessment. c) The following guidelines should be followed for submission of an assessment produced to a professional standard: • This assessment should be drafted in a report format, with title page, headings, clear structure, and formal, professional language. • Your report must have an Introduction, Conclusion, and a Reference List. • Line Spacing must be 1.5 spacing and font size 11 or 12. • All Calculations must be typed, in the body of the report. Note: Using equation editor in Word can help to reduce word count. • Handwritten calculations will not be assessed. • Work that is not typeable (e.g. psychrometric chart) can be scanned into the word document. d) Word Count • Communicating facts clearly and concisely is an important skill to develop in preparation for the professional workplace. Therefore, it is not appropriate to exceed the word limit and any words outside of the relevant limit will not be considered for assessment. • The word count includes all text including calculations, headings, tables, captions, in-text references within the main body of the report, but excludes the cover page, contents page(s) and Reference List/Bibliography. e) References • Ensure that all research and sources are relevant, current, and reliable. • Ensure that in-text citations and reference list adhere to Harvard UniSA style. • Any standards, codes & statutory authorities must be referenced in-text and in the reference list. • Please note that submissions lacking in-text referencing and/or reference list may be referred to academic integrity. UO Building Services Assessment 1 Part A 2022 SP6 Page 3/4 PART A – SCENARIO You are a newly employed staff member at CRATOX, a company that manages building services throughout the project lifecycle. The company is about to commence work on the requirements of building services for a small office building in in the CBD of Adelaide, SA that requires a new air-conditioning system. To assist the Mechanical Engineer with sizing the air conditioning systems, you have been asked to prepare a report that demonstrates to the management team that you understand the design and documentation requirements for building services, within the context of this small office building. Your report will be used by engineers to select a new air-conditioning system. Part A Report Specifications Structure your report to address the following questions: In your report, you must state any assumptions you have made. 1. Review the various statutory authorities used in the design of Electrical, Mechanical and Hydraulic services. Prepare a list of all authorities for each discipline. Selecting one and briefly describe in detail how this authority aids in the design and construction phase of a project. (approx. 300 words). 2. Explain the major differences between one-on-one type air conditioning systems and variable refrigerant volume type air conditioning systems. Include spatial requirements, system flexibly and energy efficiency in your response. (approx. 250 words). 3. Describe what a grease arrestor is and explain when they must be installed as part of a project. (approx. 250 words). 4. A small office building in the CBD of Adelaide, SA requires a new air-conditioning system to be designed, with the following room and design criteria: • The room floor area is 1,200 m². • Assume a room cooling load of 105 W/m² Total Cooling Load, with a 5 W/m² Latent Load and occupancy of 1 person/10 m². • The design external outdoor air conditions are 38.0°C DB and 21.5°C WB. • Supply air condition is 12.0°C and an outside airflow rate of 10.0 L/s/person (ignore fan gains) and chilled water to the coil at 6°C flow and 12°C return. • Design room temperature of 24°C DB and 50% RH. Assume the cooling coil has an air off relative humidity of 90% RH (or coil bypass factor of 0.9). • Use the air density and specific heat capacity values given in the concept videos and worked example. Your answers to the following questions will enable the Mechanical engineer to select and size a suitable air conditioning system: a. Produce a psychrometric chart for the cooling process (assume a single coil system with recirculation): o Plot inside and outside air conditions. o Plot Air Mixing Process Line and Mixed Air Condition. o Plot Cooling Process Line and Plot ‘Air Off Coil’ Condition. o Plot Cooling Coil Apparatus Dew Point. o Mark up Coil Enthalpy Δh b. Calculate the total room cooling load in kW. c. Calculate the latent room cooling load in kW. d. Calculate the sensible room cooling load in kW. e. Calculate the cooling coil duty in kW. f. Produce a schematic for the air conditioning system, assuming a single cooling coil, supply and return fans, mixing damper arrangement and outside air intake/discharge louvres (fans in a draw-through arrangement). g. Explain any errors that may occur with the above calculations https://uo.unisa.edu.au/pluginfile.php/65550/question/questiontext/129032/1/65658/ashrae-chart.pdf UO Building Services Assessment 1 Part A 2022 SP6 Page 4/4 ASSESSMENT ADVICE FIND, USE AND EVALUATE INFORMATION • Construction Management guide on the UniSA Library website to help you get started and find resources: http://guides.library.unisa.edu.au/friendly.php?s=ConstructionManagement • A scholarly source, or academic source, is written by a qualified author who is an expert in their field. They are usually published in books or journals, rather than on websites. A scholarly source will likely have a reference list or bibliography at the end of it. https://www.library.unisa.edu.au/siteassets/files/scholarlysources.pdf WRITING REPORTS • Apply appropriate section headings and subheadings and ensure consistent numbering of sections. • Keep paragraphs simple – one concept per paragraph. • Refer to the guidance on writing reports provided by Student Support and available at this link: https://lo.unisa.edu.au/mod/book/view.php?id=1670006&chapterid=267489 REFERENCING USING THE HARVARD SYSTEM • The UniSA Online Academic Literacy Modules