300725 Construction Technology For The Assessment Answer
a). Ductwork single-line logistics, ground floor
Office
Toilets and kitchen
b). Diagramatic representation of ductulator calculations
Answer:
Heat load calculationsBasic assumptions:
Design considers the offices only for heat load calculations
Natural air filtration is undertaken (since there is integrated green building concept in the design) :
From the drawing attached, the following are deduced:
-Office size: 8 x 8x 3.6m with 10 levels
-Kitchen : 1.375 x 1.0 x 1.8
-Toilets:
-Plant room: 2.75 x 2.0 x 3.6m
-the windows and doors: L1: 11 windows;
L2: 8 windows; 2 doors; L3 to L7: 8 windows, 2 doors
L8: 6 windows; 2 doors
L9: 4W, 4doors
L10: 2 windows; 6 doors
Now, the established wall system is known as partially filled cavity wall system (available commercially): hence the Uvalue lies between 0.28W/M2K to 0.15W/m2K hence the average U value to be used for purpose of calculation: (0.28+0.15)/2= 0.215W/m2K
In calculating the heat solar gain, the north and south elevations are not considered but we consider the sun’s orientation which is in the east and west elevations:
Qsolar = Aunshaded x SHGFmax X SCX CLF
From the standard ASHRAE tables (ASHRAE, 2001).
The CLF for east elevation at 8am is 0.8 and at 6pm is 0.12, average= (0.12+0.8)/2 = 0.1 while CLF for the west elevation at 8 am is 0.06 and 0.61 hence av= 0.335. Meanwhile since there is no direct sunlight in the North and South elevations, the CLF= 0
The maximum number of people expected to occupy each level is determined:
1 person occupies 10.25m2 hence per floor: (8x8)/10.25= 7 persons
Total number of people expected: 7 x 10 = 70
SHGF (per person from ASHRAE, 2001): = 0.5
For the lighting requirements (since there are no electrical and wiring circuit in place), we can assume that every room requires at least 3 bulbs to meet the lighting requirements. Note that level 1 has about 11 windows, approximately the number of rooms are 4 per floor hence : total lighting needed= 3 x 4x10= 120
|
HEAT TRANSFER DUE TO TEMPERATURE DIFFERENCE |
|
|
|
|
|
|
|
|
|
|
OFFICES |
|
|
|
|
|
|
|
|
|
|
ITEM |
|
Size/level |
Area |
Uvalue |
To |
Ti |
To-Ti |
No. of Levels |
Q |
|
Walls & Roofs |
|
|
|
Concrete wall |
|
|
|
|
|
|
North Elevation |
8 |
3.6 |
28.8 |
0.215 |
32 |
24 |
8 |
10 |
495.36 |
|
South Elevation |
8 |
3.6 |
28.8 |
0.215 |
32 |
24 |
8 |
10 |
495.36 |
|
East Elevation |
0 |
0 |
0 |
0 |
32 |
24 |
8 |
10 |
0 |
|
West Elevation |
0 |
0 |
0 |
0 |
32 |
24 |
8 |
10 |
0 |
|
Roof |
8 |
8 |
64 |
0.215 |
32 |
24 |
8 |
10 |
1100.8 |
|
DUE TO SOLAR/SUN GAIN |
|
|
|
CLF |
SHGF |
SC |
|
|
|
|
East Elevation |
8 |
3.6 |
28.8 |
0.1 |
0.5 |
1 |
|
10 |
1.44 |
|
West Elevation |
8 |
3.6 |
28.8 |
0.335 |
0.5 |
1 |
|
10 |
4.824 |
|
North Elevation |
8 |
3.6 |
28.8 |
0 |
0 |
0 |
|
10 |
0 |
|
South Elevation |
8 |
3.6 |
28.8 |
0 |
0 |
0 |
|
10 |
0 |
Table 1: Heat transfer through wall
Table 2: Due to Equipment
|
DUE TO EQUIPMENT |
|
|
|
w/m2 |
|
|
|
|
|
|
per floor |
8 |
8 |
64 |
12 |
768 |
|
|
|
768 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Table 3: Due to persons
|
DUE TO PERSONS |
n |
w/person |
W |
|
|
|
|
|
|
|
Per Floor |
70 |
0.5 |
35 |
|
|
|
|
|
35 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Table 4: Due to Light and Grand total
|
DUE TO LIGHT |
n |
w/bulb |
levels |
W |
|
|
|
|
|
|
|
120 |
15 |
10 |
18000 |
|
|
|
|
18000 |
|
GRAND TOTAL |
|
|
|
|
|
|
|
|
20900.78 |
|
|
|
|
|
|
|
|
|
|
|
Hence the resulting total heat load = 20.9kW
The equivalent temperature difference for walls and roofs are given by the formula:
CLTD= W/AU
For the walls: CLTD= 2091.52/28.8x0.215= 3.37
PEAK ZONE LOADS: 25kW
- Psychrometrics and Equipment Selection
Equipment selection
Select the DADANCO active chilled beans based on the above parameters
- Ductwork Design
Table : Appropriate Supply Air and Exhaust duct work
|
AREAS |
|
|
Office |
|
|
Tea room |
|
|
Male and female toilets |
|
|
|
Buy 300725 Construction Technology For The Assessment Answers Online
Talk to our expert to get the help with 300725 Construction Technology For The Assessment Answers from Assignment Hippo Experts to complete your assessment on time and boost your grades now
The main aim/motive of the finance assignment help services is to get connect with a greater number of students, and effectively help, and support them in getting completing their assignments the students also get find this a wonderful opportunity where they could effectively learn more about their topics, as the experts also have the best team members with them in which all the members effectively support each other to get complete their diploma assignment help Australia. They complete the assessments of the students in an appropriate manner and deliver them back to the students before the due date of the assignment so that the students could timely submit this, and can score higher marks. The experts of the assignment help services at www.assignmenthippo.com are so much skilled, capable, talented, and experienced in their field and use our best and free Citation Generator and cite your writing assignments, so, for this, they can effectively write the best economics assignment help services.
Get Online Support for 300725 Construction Technology For The Assessment Answer Assignment Help Online
Want to order fresh copy of the Sample 300725 Construction Technology For The Assessment Answers? online or do you need the old solutions for Sample 300725 Construction Technology For The Assessment Answer, contact our customer support or talk to us to get the answers of it.
Assignment Help Australia
Want to order fresh copy of the 300725 Construction Technology For The Assessment Answers? online or do you need the old solutions for Sample 300725 Construction Technology For The Assessment Answer, contact our customer support or talk to us to get the answers of it.
