Solutions for Seawater-cooled Air Conditioning Systems
Seawater-cooled air conditioning system is normally adopted when the chiller plant is nearby harbour or seashore. Seawater-cooled system has relatively high efficiency due to the comparatively constant and low sewater temperature. It is further divided into direct and indirect configuration. Direct seawater cooled system has the highest efficiency but the maintenance to the condenser tube or the titanium condenser is costly.
To reduce the maintenance cost of direct seawater-cooled equipment, plate heat exchange made of stainless steel or titanium is used to prevent the condenser from corrosion caused by seawater. Athough the closed loop condenser circuit is then easier to maintain, the efficiency is compromised as the heat exchange is not 100% in efficiency. Moreover the cleaning of such plate heat exchange is labour, parts and time consuming.
|Microfouling / Biofilm
Biofilm developed on the condenser creates a very large thermal barrier to the media for heat exchange. Tradtionally chlorinator is used to generate chlorine from seawater and kill the micro-organism and seashell. However the allowable concentration of chlorine discharged to the sea is governed by law to protect the environment and therefore the fouling problem is not eliminated.
In case of indirect seawater cooled system, the efficiency of plate heat exchanger is dropped dramatically when biofilm developed on the plate surface and macro-fouling block the passage of water flow. Therefore frequent cleaning is required to maintain a high differential temperature between the primary and secondary side.
Click here to see how we solve the biofilm problem.
In a typical design, a strainer is usually put before a seawater-cooled condenser or plate heat exchanger so as to prevent the devices from blocking by macrofouling such as seashells. No matter how small the size of the screen of a strainer, the larvae of these animials can pass through it and adhere to surface of pipe or devices where they accommodate and grow.
When they are large enough to block the condenser tubes or plate heat exchanger, the condenser approach increases and cleaning of devices is required.
HydroFLOW P Range does not kill the seashell directly. Instead the habitat and food supply is broken by killing the micro-organism that seashell rely on. Click here to see how we kill micro-organism effectively.
HydroFLOW P Range tackles microfouling and macrofouling existed in seawater-cooled air conditioning systems in an innovative, reliable, cost effective and environmental friendly way. The benefits that an HydroFLOW P Range can bring to you is numerous and summarised as below:
- Energy Efficiency of Chillers Maximized
- Equipment Down Time and Maintenance Cost Reduced
- Low Power Comsumption
- Ease of Installation
- Minimal Attention Required
- Environmental Friendly
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