Ball-Tech Energy Ltd. Present the Ball. Technic® System Air Conditioning and Industrial Heat Exchangers Cleaning Systems Products line Prese. Ball Tech Energy Ltd. 1
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 Ball. Technic 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. Products line Prese. Ball Tech Energy Ltd. 2
A total solution for Air-Con. & Industrial cooling system’s Scale Fouling and its Environmental problems. Products line Prese. Ball Tech Energy Ltd. 3
The Problem • Keeping Air Conditioning Systems in Full Capacity & Efficiency The Solution • Keeping the Heat Exchanger Tubes Always Clean Products line Prese. Ball Tech Energy Ltd. 4
Central Air-conditioning System -Block Diagram Make Up Water 2 -2. 5% COOLING TOWER Blow down water 1% 30 ºC COOLING WATER CYCLE CONDENSER / HEAT EXCHANGER EXPANSION VALVE 6 ºC COOLANT CYCLE EVAPORATOR Evaporating Loss 1 -1. 5% 1 T. R =3 G. P. M 25 ºC COMPRESSOR 1 Kw / h = 1 T. R (Piston) 0. 8 Kw / h = 1 T. R (Cent) 10 ºC FAN COILS CHILLED WATER CYCLE COMPLETE COOLING CYCLE Products line Prese. Ball Tech Energy Ltd. 5
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 • 1·mm of scale can be deposited in 2000 hours of operation. • 1·mm scale reduces the system by 45% Products line Prese. Ball Tech Energy Ltd. 6
What is Causing Fouling? Why? How Fast ? Water contain minerals of Magnesium and Calcium that tend to deposit on hot surfaces. heat Mg(HCO 3 )2 Mg. CO 3 + CO 2 + H 2 O Deposit heat Ca(HCO 3 )2 Ca. CO 3 + CO 2 + H 2 O Deposit Scale, fouling sediments can be found after 100 -200 operation hours Products line Prese. Ball Tech Energy Ltd. 7
Coefficient of Performance (COP) of A/C systems C. O. P = Products line Prese. QL = WC Cooling Rate of A/C Systems T. R Electrical power required to generate above T. R Ball Tech Energy Ltd. 8
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. Products line Prese. Ball Tech Energy Ltd. 9
The Effect of Scale on A/C Performance C. O. P 3 2. 5 2 1. 5 1 0. 5 0 Clean Regular 0 1 2 3 4 5 6 7 No of operational months Refrigeration 100% Another unit added Minimum Refrigeration 0 1 2 3 4 5 6 7 Months Electricity in Kw 100% Another unit added 0 1 2 3 4 5 Months Products line Prese. Ball Tech Energy Ltd. 10
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 Products line Prese. Ball Tech Energy Ltd. 11
Products line Prese. Ball Tech Energy Ltd. 12
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. • Products line Prese. Ball Tech Energy Ltd. 13
Ball Tech system It is an hydro-mechanical system, circulate Sponge Balls through condenser's tubes and keep them permanently clean. Products line Prese. Ball Tech Energy Ltd. 14
Ball Tech system installation Products line Prese. Ball Tech Energy Ltd. 15
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. Products line Prese. Ball Tech Energy Ltd. 16
Ball Tech system installation Products line Prese. Ball Tech Energy Ltd. 17
Ball Tech Injector and Sponge Ball rinsing Products line Prese. Ball Tech Energy Ltd. 18
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. Products line Prese. Ball Tech Energy Ltd. 19
• 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. Products line Prese. Ball Tech Energy Ltd. 20
Patent Protection • • Ball-Tech Energy Ltd. has patented its Ball. Technic 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 -B 1 Patents Applications in the following countries: ·Israel · Japan ·USA · China ·Mexico · Singapore ·S. Africa · Thailand ·Europe · Australia Products line Prese. Ball Tech Energy Ltd. 21
The Thermodynamic Cycle P-H Graph Products line Prese. Ball Tech Energy Ltd. 22
Calculation of Cleaning Reliability: • The Ball. Technic 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 24 Hrs 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 Ball. Technic shows 100% clean tubes with no exception Products line Prese. Ball Tech Energy Ltd. 23
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 (1 meter) pressure difference per pass • The force that pushes the ball through the tube is : • 0. 1 bar x (3. 14 x 22 cm)/4 = 0. 315 Kg • This pressure is much higher than is required to push the sponge ball through the tube. Products line Prese. Ball Tech Energy Ltd. 24
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