Directorate of Construction and Engineering: Technician
StudiesNursing Physical Assessment
Assignment Brief: HNC L4 CBE Building Services Engineering
P a g e 1 | 8
| Student Name | ID Number |
| Unit Number and Title | U10 Principles of Ventilation & Air Conditioning Design & Installation. Pearson Unit Code: D/615/1926. |
| Academic Year | 2022 – 2023 |
| Unit Assessor | Nita Dixit |
| Assignment Title | U10A2 LO3 and LO4 |
| Issue Date | 14 March 2023 |
| Submission Date | 04 June 2023 |
| IV Name | Imad Dagher |
| Date | 04 November 2022 |
| Submission Format: |
| You are to submit one A4 word-processed document, to include all attempted tasks. The choice of font face, font size and line spacing are left to your discretion. However, as a professional report, clarity and readability are critically important. You are encouraged to use diagrams and graphics to help to explain the topics. Any material (images, drawings, diagrams, text) that is derived from other sources must be suitably referenced using the Harvard form of referencing. Citations must appear within your text. The final page(s) of your assignment should include a bibliography of any material used in support of your research. The order of the references must follow the order in which the citations appear in your assignment. |
| Learning Outcomes |
| This assignment will assess learning outcome LO3 and LO4 for which you will be expected to present a design and justify components for a non-domestic ventilation and air conditioning system. |
Directorate of Construction and Engineering: Technician
Studies
Assignment Brief: HNC L4 CBE Building Services Engineering
P a g e 2 | 8
| Assignment Scenario: |
| Your client is an up and coming ecommerce company, EezeeExport.net, wishing to build a prestigious company headquarter complex to accommodate their expanding organisation. In consultation with their architect, an out of town brownfield site has been selected. Drawings have been prepared and submitted for outline planning with the LPA. The proposed new development will involve several buildings: A new 24m high office block, arranged over 6 floors (5 floors of office accommodation above ground and a basement level gym.) You are currently employed by a Building Services Consultancy to carry out the air conditioning system design. You have been provided with the general arrangement drawings and supporting information for the new office block. You have been asked to provide information, analyses and relevant design calculations for a suitable air conditioning system heating system including any possible sustainable options. Your work should make reference to industry standard guides and legislation. Preliminary calculations have been carried out and following adjustments the design data has been confirmed below. The client has asked that fresh air makes up 21% of the total supply air for the office areas. The building data per floor of office space: Radiative Loads: 23.6kW Conductive Loads: 2 kW Convective (infiltration) Loads: 1 kW sensible (ignore the latent load) Occupancy 1person/6m² of floor area Room Temp = 21 ⁰C DB, 14.5°C WB Supply Temperature: 16⁰C dB Coil ADP: 8⁰C dB. Outdoor Condition: 30⁰C dB; 20.5⁰C WB The building data for the basement gym area is: Occupancy 30 people. Gym Equipment: 0.5 kW per item of equipment Radiative Loads: 5 kW Conductive Loads: 2 kW Convective (infiltration) Loads: 1 kW Room Temp = 18 ⁰C dB, 50% RH Supply Temperature: 14⁰C dB Coil ADP: 7⁰C dB. Outdoor Condition: 30⁰C dB; 20.5⁰C WB Use the following values for air: Cp=1.02 kJ/Kg.K; latent heat of evaporation (hfg) = 2450 kJ/kg For lighting gains and office equipment gains use BSRIA data. Your assignment must present all calculations, measurements, data, psychrometric charts clearly using correct units and make reference to industry standard guides and legislation throughout. |
Directorate of Construction and Engineering: Technician
Studies
Assignment Brief: HNC L4 CBE Building Services Engineering
P a g e 3 | 8
| Assessment Task |
| Your client EezeeExport.net would like to consider a range of ventilation options for their new headquarter building. Discuss and analyse the ventilation strategies that could be employed in the building. Your analyses must also reflect on the occupiers’ operational requirements and the following common systems must be appraised in your analyses: Displacement ventilation Mixed mode ventilation Supply and extract ventilation Night time cooling. Whilst the design development continues, there is a requirement for a quantifiable design to be presented and issued to the cost consultant. Present a design proposal and justify the selection of components for the new building based on a “supply and return” ventilation and air conditioning system. Perform the necessary calculations for both the basement and a representative floor of the offices above, to determine several design requirements as follows: The calculated supply air, recirculated return air, and fresh air flowrates, the psychrometric processes with a description of the points entered on the chart, and an explanation of the process lines drawn onto the chart, calculation of the mixed point conditions, the space sensible and latent loads, the total coil duties including the associated latent and sensible loads and the heater battery duties. Present the equipment components selected for the gym and office system, in the form of a component arrangement diagram clearly labelling each component, flowrates, air temperature using data calculated using the psychrometric chart and equations. Compare different ventilation strategies to determine best practice. Discuss the effect of different duct sizing on the performance of a ventilation and air conditioning installation. Evaluate sustainable options for inclusion in a ventilation and air conditioning strategy for a given building type. |
Directorate of Construction and Engineering: Technician
Studies
Assignment Brief: HNC L4 CBE Building Services Engineering
P a g e 4 | 8
| Summative Assignment Feedback |
| Student Name/ID | |||
| Unit Title | U/10 Principles of Ventilation & Air Conditioning Design & Installation. |
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| Assignment Number | U10A2 | Assessor | Nita Dixit |
| The date you submitted |
Date Received 1st submission |
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| Re-submission Date | 18 June 2023 | Date Received 2nd submission |
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| Strengths of performance | |||
| Limitations of performance | |||
| Any improvements needed in future assessments |
Directorate of Construction and Engineering: Technician
Studies
Assignment Brief: HNC L4 CBE Building Services Engineering
P a g e 5 | 8
| Criteria | Merit | *Achieved/Referred |
| P7 | Discuss ventilation strategies for a given building. | |
| P8 | Present a ventilation and air conditioning design proposal for a given building type. |
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| P9 | Specify ventilation and air conditioning components, including ductwork sizing for a given building. |
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| P10 | Justify the selection of components for a nondomestic ventilation and air conditioning system. |
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| M4 | Compare different ventilation strategies to determine best practice. |
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| M5 | Discuss the effect of different duct sizing on the performance of a ventilation and air conditioning installation. |
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| D2 | Evaluate sustainable options for inclusion in a ventilation and air conditioning strategy for a given building type. |
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| Assessor signature and date: | ||
| * Please note that grade decisions are provisional. They are only confirmed once internal and external moderation has taken place and grade decisions have been agreed at the assessment board. |
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| ResubmissionFeedback | ||
| Assessor Signature: | Date: | |
| Internal Verifier’s Comments |
Directorate of Construction and Engineering: Technician
Studies
Assignment Brief: HNC L4 CBE Building Services Engineering
P a g e 6 | 8
| Student declaration I certify that the assignment submission is entirely my own work and I fully understand the consequences of plagiarism. I understand that making a false declaration is a form of malpractice. Student signature: Date: |
Begin writing your assignment here…
Directorate of Construction and Engineering: Technician Studies
Assignment Brief: HNC L4 CBE Building Services Engineering
P a g e 7 | 8
Internal Verification – Assessment Decisions
| Programme Title: | HNC L4 CBE Building Services Engineering | ||||
| Unit/Component Number and Title: | U10 Ventilation & Air Conditioning Design & Installation. | ||||
| Assessor Name: | Nita Dixit | Internal Verifier Name: | Imad Dagher | ||
| Assignment title: | U10 A2 | ||||
| Name of Learner (If a larger sample is required, please add rows or use additional sheets) |
Submission Type (First, Resubmission, Retake) |
List which assessment and grading criteria the Assessor has awarded. Please state specific criteria and not an overall grade |
Assessment Decision Accurate (Y/N) |
List the assessment and grading criteria where inaccurate decisions have been made |
State why the assessment decision is inaccurate. *If an inaccurate decision is recorded the Internal Verifier must recommend actions detailing the issues to be addressed. The Assessor and the Internal Verifier must then confirm that the action has been undertaken before assessment decisions are issued to learners. |
| INTERNAL VERIFIER CHECKLIST | Y/N | ||||
| Has every learner and the Assessor confirmed the authenticity of the evidence? | |||||
| Is there evidence of collusion or plagiarism? | |||||
| Does the assessment feedback to each learner: ● Link to relevant assessment criteria? ● Justify each assessment criterion awarded? ● Provide appropriate guidance to the learner without giving specific actions for improvement? |
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| GENERAL COMMENTS (if appropriate) |
Directorate of Construction and Engineering: Technician Studies
Assignment Brief: HNC L4 CBE Building Services Engineering
P a g e 8 | 8
| Any actions required must be reviewed across the whole cohort. | ||
| Action Required | Target Date for Completion |
Date Action Completed |
| I confirm that the assessment decisions are accurate, there is no evidence of assessment malpractice and any action points have been addressed and completed in respect of the whole cohort. |
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| Internal Verifier signature | Imad Dagher | Date |
| Assessor signature | Nita Dixit | Date |
| Lead Internal Verifier signature (if appropriate) | Date |