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| Dear Colleagues,
Conventional is on the way OUT and sustainable is IN. This is the observation we are recently noticing in the stream of new projects tendered in the Gulf markets. From hospitals, airports, malls, museums to large commercial buildings , Energy usage is finally well scrutinized and optimized . This is driving a strong search for well engineered products , built to rigorous norms, capable to deliver well defined performances to help reach and secure some demanding objectives.
In this newsletter we want to shed some light on our principal’s experiences in optimizing their equipment usage to the benefit of this grand objective: conserving energy. In particular we talk about:
- Factors leading to an optimized selection of cooling towers pumping head.
- Optimization of electrical bus bar systems in switchgears, leading to minimum loss in energy transfer.
- Proposing the use of cooling tower basin cleaning system ,to maintain high efficiency of chillers.
- Plate heat exchanger optimized design features
We hope our newsletter will help our readers generate some interesting ideas in optimizing parts of their installations and most of all contribute in raising awareness on the unavoidable cause of sustainable designs .
Raphael Khlat
Managing Director
FJTCO
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Importance of proper Busbar
sizing and termination |
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| DESIGN CONSIDERATIONS |
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| Given a set of electrical, mechanical and environmental bus bar requirements, the focus of the design process is to find the optimum combination of materials, configurations and manufacturing processes that will yield a finished product that meets the requirements of the application. |
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Factors influencing the sizing of the busbar:
a) The Voltage and Current rating of the system
b) The enclosure IP rating
c) Forced ventilation or natural ventilation
d) Working and ambient temperatures
e) Heat loss by convection and radiation
f) Heat generated in the busbar
Electrical - Delivering Voltage and Current The starting point for bus bar design is identification of the voltage(s) and current(s) that the bus bar will be required to distribute. Then, a candidate cross sectional area can be selected and an initial conductor layout can be designed. The electrical properties of the conductor(s) must then be evaluated to determine if the voltage and current requirements will be met.
The most important electrical property is resistance, which applies to all types of voltages and currents. If the bus bar is carrying AC current two additional electrical properties need to be considered: capacitance and inductance. Each of these causes its own type of reactance (opposition to electrical change). Those reactances contribute to the impedance of the bus bar, which is resistance(to steady current) plus the total reactance
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| Cooling Tower Basin Cleaning | |
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| HVAC New Build and Aftermarket Filtration Solutions | |
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| Save Money • Save Energy • Save Water |
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| When particulates have accumulated in your cooling tower basin, it leads to loss of efficiency in the condenser water system. Periodic manual cleaning is an option, but it is expensive, and fouling exponentially decreases the heat transfer efficiency. As the dirt builds up on heat transfer surfaces, energy is diverted to cooling DIRT and not system water. Continous basin cleaning using LAKOS Filtration Solutions prevents this problem and maintains maximum system efficiency. |
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| The LAKOS Solution: |
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| Continuous Basin Cleaning |
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A complete LAKOS basin cleaning filtration system includes a centrifugal separator, pump package, and HydroBooster spray nozzles strategically placed in the tower basin to direct the flow of dirt to the separator. |
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| Piping and nozzle layouts for factory installed or field erected cooling towers are available. |
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| Learn More > |
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| The Challenge of Cooling Tower Pumping |
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Tower pumping does not present great difficulty in terms of good pump application. This is because of a normally high order of application safety factors. Troubles do occur occasionally, however.
So, let’s take a look at these potential troubles and see how to solve them.
Pump Head Requirements
 The pumping head determination procedure for the “open” tower piping loop differs from the conventional “closed” loop piping circuit used for most hydronic (heat-cool) applications. The difference concerns consideration of “open” loop static heads.
The closed loop circuit has no need for consideration of static heads for pump selection because of a balance or cancellation of static heads between the supply and return risers. Static head lost by water flow to any height in the supply piping is cancelled by a static head “regain” as water flows down the return piping. The only pump head requirement for the “closed” loop is that due to flow-friction pressure drop, (Fig 1). |
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| Hot Mission, Cool Vision - Sondex Plate Heat Exchanger. | |
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In a region where cooling is required round the clock, round the year, the role of heat exchangers is optimal. Right from individual homes to business establishments and government institutions the need for high quality heat exchange systems is always on the rise. The products are both compact and efficient, and the after sales service matches the best on offer. Naturally, Sondex has gained the trust of clients and aims to extend the market boundaries in the near future.
The need of the day is complete cooling systems for entire areas and townships with a central provider. Sondex has successfully undertaken major projects to supply heat exchangers for district cooling, such like Atlantis, Dubai Metro, Al Zeina Al Muneera \islands in Abu Dhabi, Palm Jumeirah Shoreline Apartments, just to mention a few.. With the support of major breakthroughs in heat transfer technology, Sondex is currently involved in creating demand specific products.
Each project is meticulously planned after extensive consultations with the engineers, building contractors, product installers and the owners themselves to ensure total satisfaction.
Sondex plate heat exchangers are unique because of their innovative design. New technology is developed to keep pace with the changing needs of this fast progressing industry. A result of years of modernisation, the heat exchangers are created to suit diverse working conditions.
In addition to Gasketed Plate Design Heat Exchangers, Sondex manufactures Heat Exchangers with Brazed Plates, Semi-Welded Plates, Free Flow Plates and Plate and Shell and Tube Heat Exchangers.
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| Learn More > |
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| For feedback and to receive all of our emails, contact nadia@fjtco.com today. |
| Copyright 2011. Visit www.faisaljassimtrading.com |
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