WELCOME

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Founded in 1948 by our late Chairman, Mr Mahendra Swarup

Privately held company

Designing and manufacturing evaporative water cooling

towers and other products related to process cooling for over

5 decades

Sold cooling towers valued at over US$ 2 billion

Cooling more than 640,000,000 litres of water every minute

or 922 billion litres every day

Team consists of highly qualified engineers and professionals

with over 2,800 man-years of experience

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Main business is process cooling equipment – cooling towers, air-cooled heat exchangers and air-cooled steam condensers

The only company in the world having integrated manufacturing with five factories for process cooling equipment

90% of turnover and profits are from the process cooling business

Top management fully dedicated to process cooling

Diversified interests in wind energy, real estate and flexible packaging

Headquarters in Kolkata, India

Branch offices in New Delhi,

Mumbai, Chennai, Hyderabad,

Bangalore and Vadodara

U.S. office in Denver, Colorado

Indian and global sales network

Five manufacturing locations

around India

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KOLKATA WORKS Est. 1948

Area 16,000 sq. m

Manufactured items include:

Mechanical components

Aluminium and FRP fans

Gearboxes

Drive shafts

Flow control valves

Low oil level switches

FRP fan cylinders, basins, grids, etc.

Steel fabrication

PVC fill sheets and drift eliminators

Package and pre-engineered cooling towers

Industrial cooling tower components

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Manufactured items include:

Mechanical components

FRP fans

Gearboxes

Drive shafts

FRP fan cylinders, grids, etc.

SS grids

PVC/HTRE plastic splash bars

PVC drift eliminators

Fabrication and preservative treatment of wood components

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SAHIBABAD WORKS U.P. (near Delhi) Est. 1972

Area 40,000 sq. m

Manufactured items include:

FRP fan blades

FRP fan cylinders

FRP side casings

PVC rolls for fill sheets

PVC fill sheets and drift eliminators

Fabricated items

Package and pre-engineered cooling towers

Air-Cooled Heat Exchangers

Air-Cooled Steam Condensers

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BHASA WORKS W.B. (near Kolkata)

Est. 1992

Area 25,000 sq. m

Fabrication of wood components for cooling towers

Preservative treatment of wood components

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Manufactured items:

Air-Cooled Steam Condensers Single Row

Multi Row

KANDLA WORKS Gujarat

Est. 1997

Area 40,000 sq. m

SAVLI WORKS Gujarat (near Vadodara)

Est. 2012

Area 46,000 sq. m

COOLING TOWERS AIR-COOLED HEAT EXCHANGERS

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AIR-COOLED STEAM CONDENSERS

SERIES AQ-3800 FRP & SERIES AQ 4800 STEEL

Steel Low energy consumption

Low sound level

High efficiency film-type fill

Corrosion resistant fibreglass construction

Rugged mechanical equipment

Low maintenance costs

V-belt drive

Venturi fan cylinder

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SERIES QF-20K FRP

Unique octagonal design

Corrosion-resistant fibreglass

construction

High efficiency PVC film-type fill

Rugged mechanical equipment

Easy maintenance

Architects’ delight

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SERIES 6KF FRP

Corrosion-resistant fibreglass

construction

High efficiency PVC film-type fill

Time-tested Paharpur power train

Long service life

Easy maintenance

Easy expansion

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SERIES CF-I & CF-II FRP

Induced draught, counterflow

design

Available in multi-cell configuration

for virtually any cooling capacity

Fans available with both gear- and

direct-drive option

P-25 spray nozzles for uniform water

distribution

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SERIES 9KF FRP

Paharpur’s latest FRP unitary cooling

tower

Corrosion-resistant pultruded FRP

structure

FRP casing, louvres and fan cylinder

Over 30 models with nominal capacity

of 160 to 1000 TR per cell

High efficiency PVC film-type fill

Time-tested Paharpur power train

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SERIES OXF-30K

Paharpur’s latest CTI certified FRP

unitary cooling tower

Crossflow design

Only CTI certified crossflow tower in

India

FRP casing and fan cylinder

High efficiency PVC film-type fill

Time-tested Paharpur power train

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SERIES CF 3

Paharpur’s latest CTI certified FRP

unitary cooling tower

Counterflow design

Corrosion-resistant pultruded FRP

structure

FRP casing, louvres and fan cylinder

High efficiency PVC film-type fill

Time-tested Paharpur power train

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SERIES 9 SF AND 10 DF WOOD

Designed for high efficiency and low

operating costs

Low profile enables integration with

architectural surroundings

Low plan area

High capacity per cubic foot

Fill and drift eliminators are optimised

to deliver maximum cooling with

minimum power

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SERIES 15 & 18 WOOD

Highly versatile

Available in single and dual air

intake configurations

Splash type fill – of treated wood or

PVC/PP

Can cope with poor water quality

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SERIES S-100, 120 & 160 WOOD

Low profile and pumping head

Low operating costs

Efficient PVC fill with integral

louvres and eliminators

Stainless steel fill support system

No framing obstructions in fill area

Industrial duty mechanical

equipment 19

CLASS 400 WOOD/FRP & 800 CONCRETE

Designed for dependability, durability

and operational simplicity

Low pumping head

Rectangular, counterflow design

In-line or back-to-back configurations

PVC film/splash type or pre-stressed

concrete splash type fill

PVC drift eliminators

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CLASS 500 WOOD Pressure treated wood provides high

strength and longevity

Crossflow design

Design permits variations in fill type/density/fan type/size/fan cylinder height and shape to optimise tower sizing

Efficient fill configuration

FRP fan cylinders

Sturdy mechanicals

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CLASS 600 WOOD Cross flow design

Low drift

Minimal long term maintenance costs

Both single and dual air intake configurations

High efficiency

Long service life

Available with PVC or treated wood splash fill

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CLASS 1000 CONCRETE Non-combustible

Pre-cast and pre-stressed structural components reduce construction time

Choice of treated wood, concrete and plastic fill for longevity and durability

Available in more than 20 combinations of cell length and fill height with a variety of fill and fan options

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CLASS 800 NATURAL DRAFT HYPERBOLIC Suitable for the largest heat load

applications

Absence of fans results in energy saving

Simplicity of operation

Total avoidance of heated air recirculation

Available in cross flow and counter flow design

PVC film/splash type or pre-stressed concrete splash type fill

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RCC CHIMNEYS

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Extension of cooling tower

construction business

Built chimneys as high as 275 m

(902 ft)

Single/twin flue

Steel/brick lining

At JSW Bellary, flue was of RCC up to a

height of 105 m (done for the first time

in Asia), balance 170 m was brick

Over 1,000 units in service

Thermal designs conform to HTFS standards

Design pressures up to 160 bar

Complete header box range – plug, cover, manifold, D-type

Complete finned tube range – L, G, extruded, welded

Comprehensive process control options – steam coil, louvres, warm air recirculation

Fans and drives designed specially for ACHE application

ASME U-Stamp authorisation, if required

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Energy efficient

solutions for

HVAC system

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Cooling Tower is a device for

evaporative cooling of water

by direct contact with air

Ambient wet bulb

temperature is the limiting

temperature to which water

can be cooled

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Approach – Difference

between Cold water

temperature and Wet

Bulb temperature

Range – Difference

between Hot water

temperature and Cold

water temperature

AC System - highest

power consumer of a

building

Chillers – highest power

consumer of AC System

Chillers must be energy efficient if building has to be energy efficient

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Chiller power consumption

can be reduced by reducing

the condenser water

temperature at chiller inlet

0.586

0.592

0.597

0.603

0.609

0.614

0.62

0.626

0.632

0.56

0.57

0.58

0.59

0.6

0.61

0.62

0.63

0.64

86.6 87.1 87.6 88.1 88.6 89.1 89.6 90.1 90.6

Entering Condenser Water Temp vs IKW/TR

IKW

/TR

Entering Condenser Water Temp (Deg F)

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Condenser water

temperature can be

reduced by lowering the

cooling tower approach

Parameters Case 1 Case 2

Option 1 Option 2

Water flow rate 1650 USGPM 1650 USGPM 1650 USGPM

Hot water

temperature

1000 F 950 F 950 F

Cold water

temperature

900 F 850 F 850 F

Wet bulb temperature 830 F 830 F 830 F

Cooling Tower

selection

Model No.6153 Model No.978S/20

HP X 2 Nos.

Model No.988S/15 HP

X 2 Nos.

Cost of cooling tower INR 768000 INR 1888000 INR 2245000

Cooling Tower Fan

BHP

28.07 2x18.95 = 37.9 2X13.86 = 27.72

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Parameters Case 2 - Option 1 Case 2 – Option 2

Differential cost of C.T. INR 1120000 INR 1477000

Net energy saving in kW 33 – (37.9-28.07)X0.746 = 25.67 33– (27.72-28.07)X0.746 = 33.26

(A) Alt-I:- 5000 hrs

chiller operation

Energy saving 25.67 X 5000 X 10 = INR 1283500 33.26 X 5000 X 10 = 1663000

Payback period 1120000/1283500X12=10.5 months 1477000/1663000X12=11 months

(A) Alt-II:- 8000 hrs

chiller operation

Energy saving 25.67 X 8000 X 10 = INR 2053600 33.26 X 8000 X 10 = 2660800

Payback period 1120000/2053600X12=6.5 months 1477000/2660800X12 =7 months

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Green towers cost more

Higher initial cost is offset

by the energy saving in the

entire HVAC system

Payback period usually less

than 12 months

THANK YOU!

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