Assignment front sheet

Qualification

Unit number and title

HNC Construction and the Built Environment (Building Services Engineering)

58: Application of Scientific Principles to Building Services Engineering (Assignment 4 of 4)

Student name

 Assessor name

 

Kerr Sheikh

Date issued

Completion date

Submitted on

11/05/16

08/06/16

 

 

 

Assignment title

 

Control Systems

 

 

 

Learning Outcome

Assessment Criteria

In this assessment you will have the opportunity to present evidence that shows you are able to:

Task no.

(Student Initials)

Evidence

(Page no)

LO5

Understand elements of control systems and their performance

 

5.1

 

Explain the concepts used in control systems.

 

 

 

 

5.2

 

Explain the construction and operation of sensing elements.

 

 

 

5.3

 

 

Compare response characteristics for various mode systems with different loads.

Learner declaration

I certify that the work submitted for this assignment is my own and research sources are fully acknowledged.

 

Student signature:                                                Date:

 

 

 

 

Assignment brief

 

 

 

 

 

Purpose of this assignment

On successful completion of this unit a learner will:

 

Understand elements of control systems and their performance

 

 

 

Scenario:

 

The aim of this assessment is to investigate the control of building services systems in a commercial setting for the final assessment for this unit.

 

Therefore choose a building services control system which you are familiar with, or which you can get information on. It should be of a manageable size, i.e. sufficient enough so that you can describe the system and how it works, large enough so that it contains enough equipment on it to cover the criteria required in the task below.

 

 

Task 1  (LO5 AC5.1)           

 

Write a description of the system, e.g. the type of building and its use, main building services systems, general control requirements.

 

Choose one area of the system. Show a schematic diagram of the equipment and control gear, using standard symbols.

 

Describe the purpose of the control of that area and explain how it works. As part of the description, you should: Use the terms “controlled condition”, “load variation”, “lag” and “deviation” and remember to show their meaning in context.

 

Task 2  (LO5 AC5.2)

Provide details of the construction and describe the operation of one sensing element used in BSE to measure each of the following:-

Temperature

Pressure

Humidity

Fluid flow measurement

 

 

 

 

 

Continued:

Task 3  (LO5 AC5.3)

 

The following sketches illustrate the variation of air temperature and air movement of valve position associated with different control systems for a heating system. Identify and describe the type of control represented by each control response below;

M1: (Select/design and apply appropriate methods/techniques)

 

Compare the control modes in the sketches LO5.3 (i) to LO5.3 (vi) above, explain which is likely to be used in practice and state why, give examples of the control modes to demonstrate your answer, describe how it is likely to be implemented using modern control equipment.

D2: (Take responsibility for managing and organising activities)

 

Explain how each of the control modes in task LO5.3 would operate in your proposed system with variations in load, you can explain with the use of graphs for typical outputs to help demonstrate your answer.                  

       (vi)

 

Achievement Summary

 

Qualification

BTEC Level 4 HNC in Construction and the Built Environment (Building Service Engineering)

 

Assessor name

Kerr Sheikh

 

Unit Number and title

58: Application of Scientific Principles to Building Services Engineering (Assignment 4 of 4)

 

Student name

 

 

Criteria Reference

To achieve the criteria the evidence must show that the student is able to:

Achieved (Tick)

Assessor

Initials

 

 

 

 

LO5.1

 

Explain the concepts used in control systems.

 

 

 

LO5.2

 

Explain the construction and operation of sensing elements.

 

 

 

LO5.3

 

Compare response characteristics for various mode systems with different loads.

 

 

 

 

 

 

 

 

 

Higher Grade achievements (where applicable)

 

Grade descriptor

Indicative characteristic/s

Contextualisation

Achieved (Tick)

Assessor Initials

M1:

Identify and apply strategies to find appropriate solutions

 

Effective judgements have been made

An effective approach to study and research has been applied

 

Detailed and thorough evaluation for the control modes in task LO5.3.

 

 

 

 

M3:

Present and communicate appropriate findings

The appropriate structure and approach has been used

A range of methods of presentation have been used and technical language has been accurately used

The communication is appropriate for familiar and unfamiliar audiences and appropriate media have been used

 

Appropriate use of language to describe the legal, construction and site constraints have been used

High standards of referencing made to all sources of information using Harvard method or an alternative

High standard of presentation

Appropriate grammar/technical terms/data/SI units

 

 

D2:

Take responsibility for managing and organising activities

 

autonomy/independence has been demonstrated

substantial activities, projects or investigations have been managed

activities have been managed

the unforeseen has been accommodated

 

Successfully undertaken research and minimal direction from Lecturer in the use of the controls modes for a BSE application in task LO5.3.

 

 

 

  Assignment Feedback

Formative Feedback: Assessor to Student

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Action Plan

 

 

 

 

 

 

 

 

Summative feedback

Feedback: Student to Assessor

Sign and date, when you have read through the feedback and agree with the tutor comments and grading of the assignment.