Heat Load Calculation for Resedential Building

8/10/2019 Heat Load Calculation for Resedential Building

1/15

tafila technical university

Faculty of engineering

Project #1

Heat load for residential building

Name: S.F.Albaradie & M. N. Sabbah & M. Al-zawahera

Lecturer name: Dr.

Sameh Saqoor


2/15

1.

Description

The project is estimated the heat load form residential building which the

property for the building is locations by hills and class of location is

class(3)A the purpose of calculation is neglected the radiation heat gain andthe equipmentsand light heat gain, too. Taking the convection resistance

inside is 0.03 w/m2.C, and the outside is 0.06

w/m2.C and for the floor take

it 0.15 w/m2.C.

The residential office which is work on it is shown below.

Figure 1: the building use on project to estimated heat load (this figure is built using Ecotect).


3/15

The construction of wall, celling, partition and floor are shown

down:

Wall

Figure 2: constriction of wall.

Table 1: constriction of wall material.

No. Constriction Rthm2.c/w

Thickness

m

1 Stone 0.058 0.1

2 concrete 0.114 0.23 Insulation 0.75 0.03

4 Air gaps 0.356 0.1

5 insulation 0.75 0.03

6 Cement brick 0.1142 0.1

7 plaster 0.025 .03

U=0.46


4/15

Celling

Figure 3: constriction of celling.

Table 2: constriction of celling material.


Thickness

m

1 Asphalt 0.028 0.02

2 concrete 0.029 0.05

3 Insulation 0.88 0.035

4 reinforced 0.034 0.03

5 Cement block 0.295 0.30

6 plaster .017 0.02 U=0.78

Floor

Figure 4: constriction of floor.


5/15

Table 3: constriction of floor material .


Thicknessm

1 Cement title 0.045 0.02

2 mortar 0.3125 0.053 aggregates 0.01428 0.035

4 Semi-f-stone 0.1785 0.03

U=1.206

Partition

Figure 5: constriction of Partition.

Table 4: constriction of Partition material.


Thicknessm

1 Plaster 0.0208 0.02

2 Cement 0.157 0.05

3 Cement plaster 0.02 0.035 U=2.275


6/15

2.

Result and discussion

The heat load for every room is show in table below.

Figure 6: division of building.

Room 1

Table 5: heat load room 1.

Aream2

Overallw/m2.c

Tc

QlossW

Wall 10.5 0.460 20 96.6

Ceiling 8. 75 .78 20 136.5

Floor 8.75 1.206 15 159.29

Windows

Door

Infiltration

93.293 W


7/15

Room 2


Area

m2Overall

w/m2.c

T

c

Qloss

W

Wall 21.6 0.460 20 198.8

Ceiling 48 .78 20 748.8

Floor 48 1.206 15 818.32

Windows 20

3.5 20

1400

Door 2 3.6 20 144

Infiltration 41.4 .347 20 521.79

3831.7 W

Room 3Table 7: heat load room 3.

Aream2

Overallw/m2.c

Tc

QlossW

Wall

Ceiling 21.35 0.78 20 333.06

Floor 21.35 1.206 15 386.22

Windows

Door

Infiltration

719.28 W

Room 4


Aream2

Overallw/m2.c

Tc

QlossW

WallCeiling 14 0.78 20 218.4

Floor 14 1.206 15 253.12

Windows

Door

Infiltration

471.5 W


8/15

Room 5


Area

m2Overall

w/m2.c

T

c

Qloss

W

Wall 14.7 .46 20 135.24

Ceiling 24.78 0.78 20 386.56

Floor 24.78 1.206 15 448.27

Windows 3

3.5 20

210

Door

Infiltration 8.8 .347 20 61.11

1241.18 W


Aream2

Overallw/m2.c

Tc

QlossW

Wall 9.6 0.46 20 88.32

Ceiling 17.64 0.78 20 275.18

Floor 17.64 1.206 15 318.32

Windows 3

3.5 20

210

Door

Infiltration 8.8 0.347 20

61.11

952.9 W

Room 7


Area

m2Overall

w/m2.c

T

c

Qloss

W

Wall 13.5 0.46 20 124.2

Ceiling 16.5 0.78 20 257.4

Floor 16.5 1.206 15 295.88Windows 12 3.5 20 840

Door

Infiltration 21.18 0.347 20 147.08

1667.2 W


9/15

Room 8


Area

m2Overall

w/m2.c

T

c

Qloss

W

Wall

Ceiling 24 0.78 20 374.4

Floor 24 1.206 15 434.16

Windows

Door

Infiltration

808.56 W

Room 9


Area

m2Overall

w/m2.c

T

c

Qloss

W

Wall

Ceiling 13.2 0.78 20 205.9

Floor 13.2 1.206 15 238.7

Windows

Door 11.52 3.5 20 806.4

Infiltration 111.248 0.347 20 772.5

2023.5 W Room 10


Aream2

Overallw/m2.c

Tc

QlossW

Wall 6.5 0.46 20 59.8

Ceiling 12.25 0.78 20 191.1

Floor 12.25 1.206 15 221.6

Windows 0.5

3.5 20

35

Doorventilation 285.83

793.25


10/15

Room 11


Area

m2Overall

w/m2.c

T

c

Qloss

W

Wall 3 0.46 20 27.6

Ceiling 5.6 0.78 20 85

Floor 5.6 1.206 15 101

Windows 3

3.5 20

21.

Door

Infiltration 8.8 0.347 20 183

580 W


Area

m2Overall

w/m2.c

T

c

Qloss

W

Wall 6.95 0.46 20 63.94

Ceiling 804 0.78 20 131.04

Floor 8.4 1.206 15 151.96

Windows 0.25 3.5 20 17.5

Door


183426.4 W

Room 13


Aream2

Overallw/m2.c

T

cQlossW

Wall 56 0.46 20 515

Ceiling 151.14 0.78 20 2355

Floor 151.14 1.206 15 4070Windows 18

3.5 20

1188

Door 13 3.5 20

910


1192.9

10231.2 W


11/15

Room 14


Area

m2Overall

w/m2.c

T

c

Qloss

W

Wall 30 0.46 20 276

Ceiling 25 0.78 20 390

Floor 25 1.206 15 452.25

Windows

Door

Infiltration

1118.2 W

Total roomTable 19: total heat load.

Area

m2Overall

w/m2.c

T

c

Qloss

W

Wall 192.2 0.46 20 1767.87

Ceiling 388.57 0.78 20 6061.84

Floor 388.57 1.206 15 7029

Windows 55.73 3.5 20 390.15

Door 26.5 3.5 20 1860

Infiltration 493.98

0.3477

20

3433.14

24378.7 W

Qtotal= Qloss*1.15 = 30kw


12/15

3.

Heating system

After estimated the total heat loss we can chose the type of boiler we will

work on him we will choose RTS HE Water Power with capacity up to

37kw.

Series RTS HE Water Boilers Include:

Rugged cast iron heat exchanger sections with integral flue collector

Heat transfer rods and extra thick (3") insulated jacket for increased

performance

High temperature flexible graphite port connectors provide the

installation ease of a gasket and long life of a push nipple

Graphite port connectors and ceramic fiber flue gas rope seals reduceassembly time and require no special assembly tools

Short, individual draw rods simplify assembly and reduce stress

A front and rear observation ports to visually inspect the flame andcombustion chamber

Easy-to-remove, front access covers and side mounted cover plates for

quick and easy boiler cleaning

Side mounted thankless coil domestic water heaters (when provided) foreasy inspection and/or replacement

Cast iron smoke hood with integral fail-safe breeching damper that iseasily adjusted and locked into position

Figure 7: RTS HE Water Boilers


13/15

The piping network is shown below

Figure 8: piping network

As show in the figure there is 2 zone and the longest pipe is 80 m the fittings is equal

50% of longest pipe which the El=120 m the circulation pump are depend on the El and

pressure drop we can get the pressure drop using pumps curve which will use cast iron

pump the volumetric flow rate is equal to total heat dived on 41.86 so the volumetric flow

rate is equal to 0.716 L/s the pump should be between (200-550 pa/m) from iron pump

curve select Armstrong S45 CAST Iron pump.The pipe we will use is steel pipe

with velocity range (0.6-1.2 m/s).


14/15

The pipe diameter and heat load for all supply and return section of zone(1) are presented

as shown in table below.

Table 20: pipe diameter zone (1).

Pipesection HeatingLoadkw

FlowRateL/s

P/ElPa/m Diametermm

Supply pipe section

A-B 30 0.716 250 40

B-C 14 0.33 250 32

C-D 12.8 0.305 250 25

D-E 11.1 0.265 250 25

E-F 9.4 0.2245 250 25

F-G 7.7 0.1839 250 20

G-H 6 0.143 250 20

H-I 4.3 0.1027 250 20

I-J 2.6 0.062 250 15

J-K 1.6 0.0385 250 15

Return pipe section

L-M 1.2 0.0286 250 15

M-N 2.9 0.069 250 15

N-O 4.6 0.1098 250 20

O-P 6.3 0.150 250 20

P-Q 8 0.1911 250 20Q-R 9.7 0.231 250 25

R-S 11.4 0.273 250 25

S-T 12.4 0.296 250 25

T-U 14 0.33 250 32

U-V 30 0.716 250 40


15/15

The pipe diameter and heat load for all supply and return section of zone(2) are presented

as shown in table below.

Table 21: pipe diameter zone (2).

Pipesection HeatingLoadkw

FlowRateL/s

P/ElPa/m Diametermm

Supply pipe section

A-B 30 0.716 250 40

B-C 16 0.382 250 32

C-D 15.5 0.370 250 32

D-E 15 0.3558 250 32

E-F 14.2 0.3392 250 25

F-G 12.2 0.2914 250 25

G-H 11.2 0.267 250 25

H-I 10.2 0.243 250 25

I-J 9.4 0.2245 250 25

J-K 8.4 0.200 250 25

K-L 7.4 0.176 250 20

L-M 6.4 0.15289 250 20

M-N 5.9 0.140 250 20

N-O 5.4 0.1230 250 20

Return pipe section

P-Q 0.5 0.0119 250 15Q-R 1 0.023 250 15

R-S 1.8 0.0430 250 15

S-T 3.8 0.090 250 20

T-U 4.8 0.1146 250 20

U-V 5.8 0.138 250 20

X-Y 6.6 0.157 250 20

Y-Z 7.6 0.1815 250 20

Z-Z 8.6 0.205 250 25

Z-Z 9.6 0.2293 250 25Z-Z 10.6 0.253 250 25

Z-U 16 0.382 250 32

U-V 30 0.716 250 40

Heat Load Calculation for Resedential Building

Documents

Transcript of Heat Load Calculation for Resedential Building