Ventilation Calculation

Length

(m)

Width

(m)

Height

(m)

Elevator M/C

Room3.500 3.500 4.350 20 1070

Emergency

Stair5.395 3.580 17.850 10 3450

Turbine Building

Ground Floor

Battery

Room6.670 6.870 4.850 10 2230

Toilet 3.235 2.585 4.850 10 410

Pantry 1.770 2.585 4.850 20 450

Store 2.885 2.585 4.850 10 370

Turbine Building

Deaerator Floor

AHU Room'

Supply Fan- - - - 6500

Turbine Building

Operating Floor

TG Building

SCHEDULE for VENTILATION

Area

Room Size

No of Air

Change

Air volume to

be replaced

CW Pump

House31.500 9.550 7.850 10 23620

Switch Gear

Room8.000 9.550 4.350 15 4990

DM

Building22.000 24.000 8.850 10 46730

MCC Room

(Gr. Floor)14.000 8.000 4.850 15 8150

MCC Room

(1St Floor)20.000 8.000 3.850 15 9240

Toilet

(Gr. Floor)3.500 2.500 4.850 10 430

Toilet

(1st Floor)3.500 2.500 3.850 10 340

Chemical

Building

(Gr. Floor)

20.000 20.000 4.850 10 19400

Chemical

Building (1st

Floor)

20.000 20.000 3.850 10 15400

MCC Room 6.000 4.000 4.850 15 1750

DM Plant

PT Plant

CW Pump House

No. of

Fans

Fan capacity

considering

10% margin

(M3/Hr)

Fan capacity

seleted

(M3/Hr)

Head

Required

(mmWC )

Fresh Air supply thru' wall

mounted fan filter unit &

exhaust thru' back draft

damper

1 1177 1200 30

Air exhaust through wall

mounted exhaust fans.2 1898 1900 15

Air exhaust through wall

mounted exhaust fans.1 2453 2500 15

Air exhaust through wall

mounted exhaust fans.1 451 500 15

Air exhaust through wall

mounted exhaust fans.1 495 500 15

Air exhaust through wall

mounted exhaust fans.1 407 500 15

Air exhaust through wall

mounted exhaust fans.2 3575 3600 15

Type of Ventilation

Fan Details

SCHEDULE for VENTILATION

Air exhaust through wall

mounted exhaust fans.5 5196 5200 15

Supply Air System with

back draft damper2 2745 2800 30

Air exhaust through wall

mounted exhaust fans.7 7343 7400 15

Supply Air System with

back draft damper3 2988 3000 30

Supply Air System with

back draft damper5 2033 2100 30

Air exhaust through wall

mounted exhaust fans.1 473 500 15

Air exhaust through wall

mounted exhaust fans.1 374 400 15

Air exhaust through wall

mounted exhaust fans.4 5335 5400 15

Air exhaust through wall

mounted exhaust fans.4 4235 4300 15

Supply Air System with

back draft damper1 1925 2000 30

Type

Required

Break

Power

(in KW)

Rated Capacity

with 25%

margin

(in KW)

Wall mounted axial

type with rain cowl

& bird screen

0.245 0.306

Wall mounted axial

type with rain cowl

& bird screen

0.194 0.242

Wall mounted axial

type with rain cowl

& bird screen

0.255 0.319

Wall mounted axial

type with rain cowl

& bird screen

0.051 0.064

Wall mounted axial

type with rain cowl

& bird screen

0.051 0.064

Wall mounted axial

type with rain cowl

& bird screen

0.051 0.064

Wall mounted axial

type with rain cowl

& bird screen

0.368 0.459

Fan Details

SCHEDULE for VENTILATION

Wall mounted axial

type with rain cowl

& bird screen

0.531 0.664

Wall mounted axial

type with rain cowl

& bird screen

0.572 0.715

Wall mounted axial

type with rain cowl

& bird screen

0.755 0.944

Wall mounted axial

type with rain cowl

& bird screen

0.613 0.766

Wall mounted axial

type with rain cowl

& bird screen

0.429 0.536

Wall mounted axial

type with rain cowl

& bird screen

0.051 0.064

Wall mounted axial

type with rain cowl

& bird screen

0.041 0.051

Wall mounted axial

type with rain cowl

& bird screen

0.551 0.689

Wall mounted axial

type with rain cowl

& bird screen

0.439 0.549

Wall mounted axial

type with rain cowl

& bird screen

0.408 0.510

Length

(m)

Width

(m)

Height

(m)

A. TG Building Electrical Room

Reactor Room 16.905 4.785 4.850 6 2360

Dry Transformer

Room9.160 11.320 4.850 6 3020

Cable Cellar 56.710 6.770 3.850 6 8870

Cable Cellar

Extension26.295 11.550 3.850 6 7020

BD Bay (Column

Number 10-11)19.792 7.745 2.350 6 2170

CD Bay (Column

Number 1-1')8.240 8.095 2.350 6 950

B. Other Rooms of TG Building

Turbine Building

Ground Floor

EL(+)00.00 M

AB Bay 65.700 16.100 4.850 6 30790

Turbine Building

Mezzanine Floor

EL(+)05.00 M

AB Bay 65.700 16.100 4.850 6 30790

Turbine Building

Ground Floor

EL(+)00.00 M

AIR WASHER SIZING CALCULATION

Area

Room Size

Turbine Building

Mazzenine Floor

EL(+)05.00 M

No of Air

Change

Air volume to

be replaced

AB Bay 65.700 16.100 7.500 6 47600

BC Bay:

Electrical

Maintenance

Room

8.240 7.865 5.350 6 2090

BC Bay (Column

1-1')8.240 7.805 4.850 6 1880

Air Washer

Room8.240 7.865 5.350 6 2090

Air Washer

Room8.240 7.865 5.350 6 2090

= 141720 CMH

= 155892

= 2

= 80000 CMH

= 46.92 KW

= 55 KW

= 9

= 16000 CMH

= 3.75 KW

= 5.5 KW

KW Required for Each Washer Unit

Considered KW

No. of Washer unit considered

Capacity of each Washer unit

KW Required for Each Washer Unit

Considered KW

No. of Roof Extractor Considered

Capacity of Each Roof Extractor

Turbine Building

Operating Floor

EL(+)09.00 M

Turbine Building

Deaerator Floor

EL(+)14.50 M

Total Air Quantity to be Handled

Considering 10% Margin

Length

in Inch

1.67 1 2 11.5 4.43

2.13 1 2 11.5 4.43

6.26 4 2 11.5 4.43

4.95 2 2 11.5 4.43

1.53 1 2 11.5 4.43

0.67 1 1 11.5 4.43

21.73 4 5 11.5 4.43

21.73 4 5 34.5 13.29

DUCT SIZING

Duct Area

%

(Refer

Table 13)

Duct Area

in Sq. Inch

Dimension (Ref. Table 6)Number of

Opening

provided

CFM

Capacity

% for each

Opening

CFM

Capacity

%

33.59 4 8 17.5 6.74

1.47 1 1 3.5 1.35

1.33 1 1 3.5 1.35

1.47 1 1 3.5 1.35

1.47 1 1 3.5 1.35

Total CFM141720 - - 200 38.52 -

70860 - - 100 19.26 28

Total CFM 80000

11 21.75 10.87 116

5.436318752

Width

in Inch

Length

in Inch

Width

in Inch

11 0.64 1.00

11 0.82 1.00

11 2.41

11 1.91

11 0.59

11 0.26

- - - - - -

- - - - - -

Each Duct

Area

(sq. ft.)

DUCT SIZING DUCT SIZING

2.67

Dimension (Ref. Table 6)Duct Size

1.46

Duct Area

(sq. ft.)

Number

of Branch

Velocity

Considered

(m/sec)

- - - - - -

- - - - - -

- - - - - -

11 0.57 1 0.57 10 10

11 0.57 1 0.57 10 10

-

136 11 19.26 1 19.26 10 10

24 2900 600

24 1300 600

IF 3 NUMBER OF BRANCH TAKE OUT FROM COMMON HEADER

MM MM SQ. INCH Inch Inch

2900 600 3.624 34 24

IF 3 NUMBER OF DISTRIBUTION FROM EACH BRANCH TAKE OUT

SQ. INCH Inch Inch

1.208 18 16

NUMBER OF BRANCH TAKE OUT FROM COMMON HEADER

MM MM

850 600

NUMBER OF DISTRIBUTION FROM EACH BRANCH TAKE OUT

MM MM

450 400

SL.

NO.AREA

LENGTH

(M)

WIDTH

(M)

HIGHT

(M)

1 CCR + CER 50 7 4 350

350 3767.369

SL.

NO.AREA LENGTH WIDTH HIGHT

A TG Building Electrical Room

Gr. Floor (EL 0.0M)

1 Battery Room EL 0.0M 8 7 5 280

2 Electrical Room at EL 0.0M 50 7 5 1750

3Extention of electrical room at

EL (0.0M) (CD)27 11.5 5

1552.5

4 GT1 room at EL (0.0M) 18.5 8 9 1332

5 GT2 room at EL (0.0M) 7 8 9 504

Mezzanine Floor (EL 5.0M)

1 Cable Spreader Room EL 5.0M 58 7 41624

2 Cable Spreader Room EL 5.0M 34 11.5 41564

Operating Floor (EL 9.0M)

1 SWGR room EL 9.0M 26 11.5 4 1196

B Other Room of TG Building

1AB Bay Ground Floor EL 0.0M

65 15 5 4875

2

AB Bay Mezzanine Floor EL

5.0M 65 15 5 4875

3

AB Bay Operating Floor EL

9.0M (upto EL 20.0M) 65 15 11 10725

4BC Bay Ground Floor EL 0.0M

8 7 5 280

5

BC Bay Mezzanine Floor EL

5.0M 8 7 4 224

6

BC Bay Operating Floor EL

9.0M 16 7 4 448

6

BC Bay Deaerator Floor EL

14.5M (AW 1 for AB bay) 7 8 5.5 308

6

BC Bay Deaerator Floor EL

14.5M (AW 2 for AB bay) 7 8 5.5 308

6

CD Bay Deaerator Floor EL

14.5M (AW for Electrical room)5.75 8 5.5 253

32098.5

No of Air Washer Unit

Roof extractor

2 X 12 MW CPP

AIR CONDITIONING AREA

VENTILATION AREA

Power

37.67369 40 TR 60

Total Ventilation Considered Power

192591 200000 Kw

3 70000 41.06 170

8 26250 6.16 10

Length

(m)

Width

(m)

Height

(m)

A. TG Building Electrical Room

Electrical Room 57.100 6.670 4.850 6 11090

Reactor Room 16.905 4.785 4.850 6 2360

Dry Transformer

Room9.160 11.320 4.850 6 3020

Cable Cellar 56.710 6.770 3.850 6 8870

Cable Cellar

Extension26.295 11.550 3.850 6 7020

BD Bay (Column

Number 10-11)19.792 7.745 2.350 6 2170

CD Bay (Column

Number 1-1')8.240 8.095 2.350 6 950

Turbine Building

Operating Floor

EL(+)09.00 M

Switchgear

Room26.000 11.370 3.850 6 6830

Turbine Building

Ground Floor

EL(+)00.00 M

Turbine Building

Mazzenine Floor

EL(+)05.00 M

AIR WASHER SIZING CALCULATION

Area

Room Size

No of Air

Change

Air volume to

be replaced

B. Other Rooms of TG Building

Turbine Building

Ground Floor

EL(+)00.00 M

AB Bay 65.700 16.100 4.850 6 30790

Turbine Building

Mezzanine Floor

EL(+)05.00 M

AB Bay 65.700 16.100 4.850 6 30790

AB Bay 65.700 16.100 7.500 6 47600

BC Bay:

Electrical

Maintenance

Room

8.240 7.865 5.350 6 2090

BC Bay (Column

1-1')8.240 7.805 4.850 6 1880

BC Bay 65.575 6.770 5.350 0 0

Air Washer

Room8.240 7.865 5.350 6 2090

Air Washer

Room8.240 7.865 5.350 6 2090

= 159640 CMH

= 175604

Turbine Building

Operating Floor

EL(+)09.00 M

Turbine Building

Deaerator Floor

EL(+)14.00 M

Total Air Quantity to be Handled

Considering 10% Margin

= 2

= 90000 CMH

= 52.79 KW

= 55 KW

= 9

= 18000 CMH

= 4.22 KW

= 5.5 KW

No. of Washer unit considered

Capacity of each Washer unit

KW Required for Each Washer Unit

Considered KW

No. of Roof Extractor Considered

Capacity of Each Roof Extractor

KW Required for Each Washer Unit

Considered KW

Length

in Inch

Total CFM 42310

CFM

Capacity

%

Number of

Opening

provided

CFM

Capacity

% for each

Opening

Duct Area

%

(Refer

Table 13)

DUCT SIZING

Dimension (Ref. Table 6)

Duct Area

in Sq. Inch

27.21 4 7 11.5 3.54

27.21 4 7 34.5 10.61

42.07 4 11 17.5 5.38

1.85 1 2 3.5 1.08

1.66 1 2 3.5 1.08

Total CFM 113150 11 30.76 15.38 116

- - - - - -

- - - - - -

- - - - - -

Total CFM 117330

Total CFM 90000

FOR NON-ELECTRICAL ROOMS

Total CFM 113150

11 30.76 15.38 116 24 2900 600

7.688993352 24 1300 600

Width

in Inch

Length

in Inch

Width

in Inch

11 3.01 1.51

11 0.64

11 0.82

11 2.41

11 1.91

11 0.59

11 0.26

11 1.86 1.86

11 11.50 11.50

DUCT SIZING

Dimension (Ref. Table 6)

2.67

Velocity

Considered

(m/sec)

Duct Area

(sq. ft.)

Duct Size

DUCT SIZING

Each Duct

Area

(sq. ft.)

1.46

Number

of Branch

- - - - - -

- - - - - -

- - - - - -

- - - - - -

- - - - - -

24

- 11 0.00 1 0.00 0 0

- 11 0.57 1 0.57 10 10

- 11 0.57 1 0.57 10 10

11 31.89 31.89

Inch Inch

11 24.46 24.46 144 30

12.23171788 24

IF 3 NUMBER OF BRANCH TAKE OUT FROM COMMON HEADER

MM MM SQ. INCH Inch Inch

2900 600 5.126 34 24

IF 3 NUMBER OF DISTRIBUTION FROM EACH BRANCH TAKE OUT

SQ. INCH Inch Inch

1.709 18 16

MM MM

0 0

MM MM

3600 750

2200 600

NUMBER OF BRANCH TAKE OUT FROM COMMON HEADER

MM MM

850 600

NUMBER OF DISTRIBUTION FROM EACH BRANCH TAKE OUT

MM MM

450 400