Products line Prese. Ball Tech Energy Ltd. 1

Ball-Tech Energy Ltd. Present the

BallTechnic® System

Air Conditioning and Industrial Heat Exchangers Cleaning Systems

 

 

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 .

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

COMPLETE COOLING CYCLE

1Kw / h = 1T.R (Piston)0.8Kw / h = 1T.R (Cent)

COOLING WATER CYCLE

COOLANT CYCLE

CHILLED WATER CYCLE

COOLING TOWER

CONDENSER/ HEAT EXCHANGER

6 ºC 10 ºC

25 ºC

FAN COILS

COMPRESSOR

Make Up Water 2-2.5%

Evaporating Loss 1-1.5%

Blow down water 1% 1T.R =3 G.P.M

EVAPORATOR

30 ºC

EXPANSION VALVE

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.

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

1mm of scale can be deposited in 2000 hours of operation.

1mm scale reduces the the system by 45%

What is Causing Fouling? Why? How Fast?

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

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

Mg(HCO3 )2 MgCO3 + CO 2 + H 2 O

Ca(HCO3 )2 CaCO3 + CO 2 + H 2 O

heat

heat

Deposit

Deposit

Coefficient of Performance (COP) of A/C systems

Clean

Regular

0

0.5

1

1.5

2

2.5

3

0

C.O.P

1 2 3 4 5 6 7

No of operational months

QL

WC

Cooling Rate of A/C Systems T.R

Electrical power required to generate above T.RC.O.P= =

The Problem • 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

CleanRegular

00.5

11.5

22.5

3

0

C.O.P

1 2 3 4 5 6 7

No of operational months

100%Refrigeration

0 1 2 3 4 5 6 7Months

Minimum Refrigeration

Anotherunit added

100%

Electricity in Kw

0 1 2 3 4 5 6 7Months

Anotherunit added

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 Watts

Per T.R

0 0.001 0.0015 0.002 0.0025 0.0030.0005

Fouling Factor

100%

120%

140%0 0.33 0.50 0.67 0.88 1.000.17

Scale Thickness mm

The Increasing of Power Consumption due to Fouling of Heat Exchanger

Keeping Heat Exchanging Tubes Always Clean

Existing Solutions • 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.

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 FeaturesThe 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

• 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.

•Patent Protection• Ball-Tech Energy Ltd. has patented its BallTechnic

System products throughout the world •  

• Patents No US 5176204 Israel 96802 US 5176204 Israel 94289 US 5086833 Israel 79885 US 4865121 Europe 0-417-332-B1 • Patents Applications in the following countries:• Israel Japan USA China Mexico Singapore S. Africa Thailand• Europe Australia

The Thermodynamic Cycle P-H Graph Pressure

H3 H’3 H1

ID EALENTRO PYLINE S=0

3’

3

Hes H2 H’2

2 2’

Q L

EN THA LPY

ACTUAL EN TRO PYCO NDIT ION S

sat liq

P’2

P 2

P 1

sat vap our

m (H 1-H’3) m(H ’2-H1)

C .O .P=Q L

W c

=Fo ulin g effect - System therm al cycle after 1000 Hrs of o peration

m (H 1-H3) m (H 2-H1)

C .O .P=Q L

W c=Clean system therm al cycle

A chieved w ith BallTechnic

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 0.1bar (1 meter) pressure difference

per pass

• The force that pushes the ball through the tube is:

• 0.1 bar x (3.14x22 cm)/4 = 0.315 Kg • This pressure is much higher than is required to

push the sponge ball through the tube.