Acoustics and Architecture

Building Services Applications

UBLMTB-30-20

Component B1 (Semester 1 Coursework) Brief

5

Contents

Introduction page 3

Questions A – Water Services and Drainage (30 marks) page 6

Questions B – Heating Systems (40 marks) page 8

Question C – Lighting (30 marks) page 10

Introduction

The Analysis and Calculation Report requires you to demonstrate, that you can perform the analytic procedures introduced in lectures during the first semester. This includes the following subjects:

· Water Services and Drainage System Design

· Heating System Design

· Lighting Design

The key aim of this coursework is to demontstrate your methodology and demonstrate an understanding of the techniques.

This coursework is based on an imaginary small office and gym building based upon the layouts of Mallard House at UWE Frenchay.

These are provided in PDF.

Drawings of Mallard House

Site location

Image of model

North

Plant Room

N

Ground floor

Rev B change

Room to be called IES 006

(this is the same label as stated in the CAD drawing)

First Floor

Image ground and first foor

The rooms have the following uses and Occupancy:

Room	USe	Occupancy
OES004	Gym	8
OES006	Small office	2
OES007	Small office	2
OES009	Office	5
OES015	Meeting Room	8
1ES001	Office	9
1ES004	Meeting Room	8
1ES006	Changing Room	6

Where drawings are requested these can be digital or neat hand drawings. The most important aspect is that they are clear. You do not need to use CAD unless you find it simpler. Marks will be awarded for clarity, accuracy and methodology not for the drawing technique selected.

You will need to show workings for all your calculations, and clearly reference all figures used in the calculations, to get full marks. Anyone providing answers alone will be given zero marks for that section.

You may use a spreadsheet for your calculations, however it must be clear how you arrived at the answer in your report, we will not be checking formula used within cells of the excel sheet to check working out, you need to clearly state within the report what calculations you have used in all the cells. Without this information we will not be able to mark your submission for these sections.

Word Count:

As a technical report the UWE standard guidance of 1000 words is a difficult metric. The words in this report are simply to describe your calculations and methodology. The majority of your report should be tables, diagrams and calculations.

Formative Feedback:

This will be given on extracts of coursework (approx. 50%) from drafts of the Reports and Essay prior to submission. You will need to allow at least 10 term-time days for a response.

Coursework Submission:

This course work should be submitted digitally and key dates are shown on Blackboard.

Please note that the submission deadlines are absolute and based on UWE server time, therefore you are strongly advised to submit work well ahead of the deadline dates to avoid situations where penalties could be incurred. Penalties are imposed if a submission is made up to 24 hours after the deadline, and the highest mark you can receive will be the minimum pass mark (if the assessment is passed). After the 24 hours have passed, the work will not be accepted for marking.

Exceptions shall only be considered for serious unforeseen circumstances. Regular traffic congestion, lost computer files and queues at printers are not unforeseen problems. Aim to submit 24 hours before the deadline and always back-up computer files.

Questions:

A) Water Services and Drainage (30 marks)

The water services and drainage component of this coursework is focussed on the toilet area, however some additional. This comprises a Male WC, at Ground Floor, with a Female WC on the first floor directly above. There is also a disabled WC, staff WC, cleaners store and small staff kitchenette in this area. These spaces are shown below:

Ground floor First Floor

1. You are to prepare a drainage layout and schematic for the area this should include the following:

A. The kitchen also requires drainage from a sink and dishwasher (Cold water feed only) located about half way along the South wall of the room (to the LHS)

B. 1ES004 will also have laundry and cleaners room. Allow for a washing machine (cold water feed only) and cleaners sink half way along the North wall of the room (to the RHS)

C. OES002 Store Room has one cleaner sink located on the wall adjacent to the stairwell

D. IES006 Changing Room has two showers adjacent to the stairwell

(note 1ES006 has been changed from a Toilet to a Changing Room for this exercise).

Provide a rational on your drawing as to your decisions (4 marks)

2. Provide working for the the discharge units for each stack that you have proposed in the system. (2 marks)

3. Prepare a domestic water services layout and schematic for the area, as noted in question A1 for both the hot and cold water, this should include the following:

A. An estimate of loading units in the system shown on the schematic

B. Key pipe sizes

Assume the system is fed by mains cold water pressure entering the building below ground into the plant room OES011 and the hot water is by local electrical hot water heaters. (8 marks)

4. Redraw the schematic only to meet the following requirements

· The client has requested a cold water storage tank on the incoming supply, sized to cover 15 mins of the overall peak cold water flow rate to the building. They have also requested a central indirect hot water storage cylinder to cover 10 mins of the peak hot water demand serving the hot water system. I.e. replacing the local electric hot water heaters.

· They also want to understand how large a hot water tank would need to be if the hot water was heated centrally using a calorifier (response to be provided in Q5)

· Update the estimate of the loading units and pipe sizes (8 marks)

5. Provide an estimate the size of the cold and hot water tank sizes required in Q4.

(2 marks)

6. How large is the heat input (in kW) required from a boiler to deliver a 1 hour reheat time of the hot water tank required in Q5? (2 marks)

7. Provide an update to the domestic water schematic from Q3 looking at how the system may work if using filtered rainwater harvesting for flushing of the WCs and urinals only. Flow rates not required. (4 marks)

B) Heating System Design (40 marks)

8. Calculate the heat loads for each room based on the following scenario:

· For room types refer to information provided at the start of the coursework.

· All dimensions of walls and windows are provided in the supplementary sheet.

Scale drawings are provided which will be 1:100 if printed at A3. Note it is expected you will use dimensions provided and not create your own from scale drawings.

· Assume the small corner room IES003 is not going to be built

· Plant rooms are to be unheated, however it is to be assumed heat gains for equipment result in no heat loss from surrounding rooms to the plant areas.

· Most rooms are to be naturally ventilated directly with outdoor air. Assume in winter conditions the windows are open to provide a minimum of 3 l/s/person. For this calculation you should allow for this load to be offset with the heat gains for people in that room.

· No other heat gains should be taken into account.

· Ignore any ventilation or air changes rates within the WCs, kitchen or changing rooms for this calculations

(note 1ES006 has been changed from a Toilet to a Changing Room for this exercise).

· Do not allow for ventilation to internal corridors and store rooms for this calculation.

· Allow an additional 0.2 ACH of ventilation for the Entrance Corridor OES001 due to movement of people in and out.

· The small Entrance Lobby OES014 is unheated.

· U Values:

· Wall = 0.14 W/sqm.K

· Ground Floor = 0.1 W/sqm.K

· Roof = 0.12 W/sqm.K

· Glazing/doors = 1.4 W/sqm.K

· Infiltration rate = 0.2ACH

· Internal Temperature = 21°C

(for this exercise all rooms to be the same)

· External Temperature = -2°C

(note you should consider how this changes for the ground floor)

· Allow an additional 10% on the conduction heat loss for each room due to thermal bridging.

· Base your heating loads on the combination of ventilation, infiltration and conduction, neglecting internal gains other than occupancy as noted above.

· You do not need to provide radiators in all internal areas (those without external walls) however any heat loss should be covered by radiators in adjacent rooms. If you do this, make it clear which radiator is covering additional load from which room.

Tasks to complete:

i. Complete a simple section to show the height of the walls/rooms you have used in your calculations.

This doesn’t need to be at scale, although it may help if you do it to scale, but must show the heights used.

ii. Provide a table of the final heat loss from each room in W.

iii. State the overall NV/3 and U.A figures for the building.

iv. Provide a final heat loss for the building in kW.

v. Provide a final figure for the overall heat loss from the building in W/m2 of total floor area.

vi. Provide the total heat loss of the building if the external temperature dropped to -4°C. (10 marks)

9. Select appropriate radiators for each space based on the assumptions below. You should state the size of the radiator and record the pressure drop stated by the manufacturer.

Key assumptions:

· Use your heat loss figures for the -2°C scenario.

· The heating system proposes the use of a gas condensing boiler, as such you are to assume 70°C Flow and 50°C Return water temperatures

· Possible radiator selection information will be posted on blackboard or you may find a suitable option through your own research

· You will need more than 1 radiator in some spaces

Provide a clear table showing overall heat loss for each room and the selected radiator(s) (8 marks)

10. You are now to design a pipework system and calculate pressure drops through the system based on the radiators and heat loss calculated in the previous questions.

Use the following assumptions:

· The boiler and pumps are located in the plant room OES11 on the plans.

The key tasks are set out below:

i. Draw out a layout and corresponding schematic

ii. Show on the layout and schematic which radiator will be the index run and give your reasons for assuming this radiator (note: you are not expected to calculate any alternative runs)

iii. Calculate the water flow rates through your assumed index run and establish the required pipe sizes, velocities and pressure drops assuming medium grade pipework. Show the information in crosshairs on the schematic.

iv. Provide the pump power required if the pump has an efficiency of 80%

(15 marks)

11. Your client has decided that they want to investigate zero carbon technologies and has asked whether an ground source heat pump is possible for this project.

A. Provide a brief summary of the advantages and disadvantages of this system specifically for this building (assume it is during the design process for the building and is therefore still to be built) (2 marks)

Based on a Flow temperature of 45°C and Return temperature of 35°C:

B. What overall flow rate of the pump would you now expect? (1 mark)

C. Reselect the radiator(s) in room OES015 (2 marks)

D. Provide a brief summary of what further changes to the system would you suggest and why? (2 marks)

C) Lighting Design (30 Marks)

1. User Requirement Specification (10 marks)

Develop a 1-page URS (user requirement specification) for the building setting out the principles and performance criteria to which the electric lighting systems is to be designed.

· The URS is for an gym with office facilities, refer to the handbook and relevant publications to address issues particular to these spaces.

· A strict single page limit is applied. Craft a concise piece of writing and use illustrations to save space. These should have been the outcome of study, not the complete study process.

· In the past the best followed the structure we discussed in class – function, amenity, legal, energy, cost, etc.

2. Lighting Design (10 marks)

Develop a design for the electric lighting of room the gym room (OES004) selecting appropriate fittings and proving function with appropriate calculations.

· Prove your design meets lighting standards with an appropriate software calculation-for general and emergency.

· From the software generate a standard output room layout with lux contours on the working plane.

· Provide one page with illustrations of your room including an isometric view.

3. Architectural Integration (10 marks)

Chose up to three fitting types to be used on the external façade of New Engineering Building (see images on the next page), to provide architectural feature lighting to the building entrance.

· Provide a spec sheet(s) for the types of fittings you have selected to include performance criteria and polar diagrams.

· Provide an installation detail sketch. Consider the mounting position and angle of light.

· Consider the impact your choice may have on the surrounding environment.