• Author / Uploaded
• parykoochak

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The file has three sheets 1

Info

Information of how to use the file

2

Main sheet

Data entry and output sheet - yellow fields input fields

3

cal

This sheet takes input from Main sheet, calculates and transfer back output to Main s

Calculates Various losses Total makeup water quantity Side stream filter capacity Dimension of CT Basin

DBS

et, calculates and transfer back output to Main sheet

INPUT PROCESS DATA Circulation Flow Suply Temperature Return Temperature Wet Bulb Temperature Approach Range Cycles of Conc.

500 33 43 27.8 5.2 10 4

M3/hr °C °C °C °C °C

OUTPUT 1 2 3 4

Evaporation Loss Blow Down Loss Drift Loss Back Wash Loss

8 3 1 10

M3/hr M3/hr M3/hr M3/hr

5 Total Make up

22 M3/hr

6 Side Stream Capacity

15 M3/hr

INPUT DATA FROM CT VENDOR CT footprint Length Width

8 mt 4 mt

Sump level to pump centre level Pump centre level to min level MinL to NL Normal level to max level (over flow level) Free board level to max level

600 200 1312.5 300 300

mm mm mm mm mm

OUTPUT ELEVATION 300 mm

MaxL

300 mm

NL

1313 mm

MinL

200 mm

Pump CL

600 mm

Sump

2713 mm

Total Depth

To avoid sediments ingress in pump

ments ingress in pump

COOLING TOWER & ITS SYSTEM By process requirement

Circulation Flow

500

By process requirement By process requirement As per prevailing atm condition

Suply Temperature Return Temperature Wet Bulb Temperature Approach Range COC

33 43 27.8 5.2 10 4

As per CW treatment

CT Makeup Reuirement 1 Evaporation Loss

0.00153 * Range * Circulation

Q Range Evaporation loss

500 10 7.65 8

Round Off 2 Blow Down Loss

Evap Loss / [ COC - 1]

Eavporation loss COC Blow Down Loss

8 4 2.7 3

Round Off 3 Drift Loss

0.2% of Circulation rate

Q Drift Loss

500 1 1

Round Off 4 Side Stream Filter Side Stream Filter capacity

3% of Circulation rate

Q Side Stream Capacity

500 15 15

Round Off Back Wash Loss

2% of Circulation rate

Q Side Stream Capacity Round Off

500 10 10

CW MAKE UP FLOW = Evap loss + B/D loss + Drift Loss + Back wash CW Make up

22

CT BASIN M3/hr °C °C °C °C °C

CT Capacity Q

110% of circulating flow 500 M3/hr 110% 550 M3/hr

Hold up volume above min level in CT Basin 5 minutes of circulating water Q 5 min of vol Round Off 42 M3 of volume to be of min level to normal level

M3/hr °C M3/hr M3/hr

CT Foot print L B Area Ht of water storage (min to normal)

500 M3/hr 41.7 M3/hr 42 M3/hr

8 mt 4 mt 32 m2 1.3125 mt

WATER LEVEL IN SUMP M3/hr M3/hr M3/hr

Sump to pump centre line

600 mm

Pump centre level to min level

200 mm

Min Level to Nor level M3/hr M3/hr M3/hr

M3/hr M3/hr M3/hr

M3/hr M3/hr M3/hr

M3/hr

1312.5 mm

Normal level to max level (over flow level)

300

Free board level to max level

300