Ball-Tech Energy Ltd.

Present the

BallTechnic ® System

Air Conditioning and Industrial Heat Exchangers Cleaning Systems

Products line Prese.

Ball Tech Energy Ltd.

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· · · · · · Ball-Tech Energy Ltd .

Established in 1989 as an R&D company .

Reorganized in 1994 with new investment and management .specializes in the field of water treatment.

Main product line The BallTechnic System.

Patented throughout the world.

Installed in air conditioning or industrial water piping.

Keep heat exchanger tubes permanently clean .

Enables heat exchanger nonstop operation at its optimum design condition .

Over 1700 Installations in Israel, Italy, France, Mexico, S. Africa Thailand, India, Malaysia, Singapore, China, Hong Kong and the Philippines Located in the modern Industrial Park in Rosh Ha ’ ain, Israel.

A total solution

for

Air-Con.& Industrial cooling system’s Scale Fouling and its Environmental problems

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•

The Problem

Keeping Air Conditioning Systems in Full Capacity & Efficiency

•

The Solution

Keeping the Heat Exchanger Tubes Always Clean

Central Air-conditioning System -Block Diagram Blow down water 1% EXPANSION VALVE COOLING TOWER COOLING WATER CYCLE CONDENSER / HEAT EXCHANGER COOLANT CYCLE Make Up Water 2-2.5% Evaporating Loss 1-1.5% 1T.R =3 G.P.M

COMPRESSOR 1Kw / h = 1T.R (Piston) 0.8Kw / h = 1T.R (Cent) EVAPORATOR FAN COILS CHILLED WATER CYCLE COMPLETE COOLING CYCLE

The Problem

• • • • •

Cooling capacity of The majority of medium to large central air conditioning systems are designed around a re-circulating open water cooling systems .

Water flow in the tubes of Shell & Tube heat exchanger and remove the heat from the coolant gas .

Water contains low solubility salts and sediments that deposit and build a stony scale on the inner tubes surfaces, causing fouling of the heat exchanger unit

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•

Fouling of the heat exchanger unit is causing reduction of the Air Conditioning C.O.P

What is Causing Fouling? Why? How Fast ?

Water contain minerals of Magnesium and Calcium that tend to deposit on hot surfaces .

Mg(HCO 3 ) 2 heat MgCO 3 + CO 2 + H 2 O Deposit Ca(HCO 3 ) 2 heat CaCO 3 + CO 2 Deposit + H 2 O

Scale, fouling sediments can be found after 100-200 operation hours

Coefficient of Performance (COP) of A/C systems

C.O.P = Q L W C =

Cooling Rate of A/C Systems T.R Electrical power required to generate above T.R

C.O.P

3 2.5

2 1.5

1 0.5

0 0 1 Clean Regular 2 3 4 5 No of operational months 6 7

The Problem

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Accumulation of stony deposits on the tube inner wall has a heat insulating effect that results in :

• •

·

· • • ·

Reduction of system C.O.P and overall capacity Lower C.O.P requires extra installed capacity resulting in higher installation cost Lower C.O.P means higher electricity consumption and maintenance costs .

•

A/C system stoppage due to compressor high head pressure .

The Effect of Scale on A/C Performance

C.O.P

3 2.5

2 1.5

1 0.5

0 0 Clean Regular 1 2 3 4 No of operational months Refrigeration 100% 5 6 7 Another unit added Minimum Refrigeration 0 1 2 Electricity in Kw 100% 3 4 Months 5 0 1 2 6 7 Another unit added 3 4 Months 5 6 7

Current Design Consideration to Compensate Fouling

• •

· Add more capacity per unit · Add units as backup during disassembly and cleaning

• • • • •

Current Operational Consideration to Compensate Fouling · Use more electricity for the required cooling · Operate another system earlier · Special maintenance to disassemble and clean the heat exchanger

Relative 140% 0 Watts Per T.R

120% The Increasing of Power Consumption due to Fouling of Heat Exchanger 0.17

Scale Thickness mm 0.33

0.50

0.67 0.88

1.00

100% 0 0.0005

0.001

0.0015

0.002

Fouling Factor 0.0025

0.003

Keeping Heat Exchanging Tubes Always Clean Existing Solutions

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Chemical cleaning by acids.

Shutting down and chemical-acid cleaning of the heat exchanger tubes.

Frequent mechanical disassembly and acid cleaning of the heat exchanger tubes require excessive maintenance time.

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Acid can damage the tubes and the system.

An additional backup unit is required to provide cooling while cleaning the system.

Loss of production and cooling for days.

Environmental problems due to the disposal of the chemicals.

Ball Tech system

It is an hydro-mechanical system, circulate Sponge Balls through condenser's tubes and keep them permanently clean.

Ball Tech system installation

Ball Tech system Cleaning Concept

Features

* · The system injects and collects the soft balls in seconds * 100% reliable system Inject and Clean the tubes every 40 min (adjustable) totally avoids scale * The Sponge Balls made of natural rubber with special wear resistance additives * The sponge ball ’ ls diameter is 1 mm larger than that of the heat exchanger inner tube ’ s diameter..

* Sponge Ball ’ s and condense water specific weight are identical.

* Sponge Ball has Excellent Flexibility * The sponge balls enter and moves through the heat exchanger tubes by the water flow * The sponge balls wipe off the inner tubes walls without disturbing the condense water flow .

*

Balls replacements - Every 1500 Hrs of the chiller works.

Ball Tech system installation

Ball Tech Injector and Sponge Ball rinsing

Ball Tech system advantages

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It is a simple, reliable hydro-mechanical system.

It keeps heat exchanger’s tubes permanently and absolutely clean.

It is simple to install and requires no modification to the heat exchanger.

The ball flow does not disturb the condense water flow.

It does not impair environmental quality.

It preserves heat exchanger’s C.O.P. as designed by the manufacturer.

• • • • •

Saving on Air-conditioning’s energy consumption about 15% and more.

Reduce maintenance and chemicals cost.

It is one-time investment recoverable within one year.

It prevents accelerated chiller’s compressor wear.

Clean and simple procedures for supervision by any maintenance technician.

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Patent Protection

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Ball-Tech Energy Ltd. has patented its BallTechnic System products throughout the world

• • •    • • • • • • ·

Patents No US 5176204

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Israel 96802

· · ·

US 5176204

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US 5086833

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US 4865121

·

Israel 94289 Israel 79885 Europe 0-417-332-B1 Patents Applications in the following countries : · Israel ·



USA ·



Mexico ·

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S. Africa · · Europe · Japan China Singapore Thailand Australia

The Thermodynamic Cycle P-H Graph P re ss u re

P’2 P 2 3 3’ 2 2’ ID E AL E N T RO P Y LIN E

D

S = 0 P 1 Q L sat liq H3 H’3

Clean sy stem therm al cycle A chieved w ith B allTec hnic

H1

Fo ulin g effect - Sy stem therm al cycle after 10 00 Hrs of o peratio n C .O .P= Q L W c =

AC TU AL EN TRO P Y CO ND IT IO N S s at vap our H es H2 H’2

C .O .P= Q L W c =

EN THA LP Y

m (H 1 -H 3 ) m (H 2 -H 1 ) m (H m( H 1 H’ 3 ’ 2 -H 1 ) )

Calculation of Cleaning Reliability:

• • • • • • • • • • • ·

The BallTechnic system is using 30 balls for every 100 tubes in a pass (30% of the counted tubes) Can this ratio clean all the tubes ?

• • ·

Yes, with 99.999....% reliability

• ·

Some simple probability calculations The chance of a ball not to pass through a specific

· ·

tube is 0.7

There are, however, about 40 cleaning cycle in 24Hrs and deposits are formed within 200 Hrs .

The probability of a ball not to clean a tube is reduced over 24 Hrs. at the power of 40 is : · (0.7)40 = 6.3 * 10-7= 0.00000063

Conclusion: cleaning reliability of every tube is proved.

· Field experience: Unnecessary disassembly of the heat exchangers of systems equipped with BallTechnic shows 100% clean tubes with no exception

Ball Transfer Force

• • •

Balls specific gravity is the same as water Ball diameter is 1 mm larger than tube diameter Pressure drop on tube is at least 1 meter (0.1 bar) per pas

• •

Example

A 20 mm tube diameter, with 0.1

bar

pass (1 meter) pressure difference per •

The force that pushes the ball through the tube is :

• •

0.1bar x (3.14x22 cm)/4 = 0.315 Kg This pressure is much higher than is required to push the sponge ball through the tube

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