High-Pressure Alarm Analysis (Water-Cooled Chiller)
2026-05-27
In water-cooled chiller systems, a high-pressure alarm (HP trip) is almost always triggered by issues within the cooling water circuit, specifically due to insufficient water flow or poor heat dissipation.
Below are the primary causes behind this issue:
Insufficient Water Flow Rate:
A malfunctioning cooling water pump, clogged pipes, or partially closed valves reduce the volume of water circulating through the condenser, preventing proper heat transfer.
Clogged Y-Strainer / Filter:
Debris, sand, or rust trapped inside the Y-strainer restricts the water flow significantly, leading to an immediate pressure spike in the system.
Severe Condenser / Cooling Tower Scaling:
High mineral content in the water causes scaling inside the condenser tubes and cooling tower fillers. This scale acts as a thermal barrier, drastically reducing cooling efficiency and driving up system pressure.
Cooling Tower Fan Failure:
If the cooling tower fan or its drive belt breaks or slips, the tower cannot lower the water temperature. Entering the condenser with overheated water causes a rapid high-pressure alarm.
Low Water Level in the Cooling Tower Basin:
An inadequate water volume or a faulty float valve introduces air into the piping network, causing air locks and disrupting steady water circulation.
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How to Select an Industrial Chiller for Pipe Extrusion Lines
2026-04-20
In plastic pipe manufacturing, temperature control plays a crucial role in ensuring product quality and production efficiency. Industrial chillers are essential auxiliary equipment widely used in pipe extrusion lines to provide stable and continuous cooling.
Applications of Industrial Chillers in Pipe Extrusion
Industrial chillers are mainly used in the following parts of the extrusion process:
Vacuum calibration tank cooling (primary application)
Extrusion mold cooling (mold temperature control)
Hydraulic and auxiliary system cooling (optional)
Among these, vacuum tank cooling requires the largest cooling capacity and directly affects pipe dimensional stability and surface quality.
Key Factors for Chiller Selection
To select the right chiller, the following parameters should be considered:
Pipe material (PVC, PE, PPR, etc.)
Pipe diameter range
Production capacity (kg/h)
Required cooling water temperature
Water tank volume and circulation flow rate
A proper evaluation of these factors ensures optimal cooling performance and energy efficiency.
General Selection Guidelines
Based on industry experience, the recommended chiller capacities are:
Small pipes (20–63 mm): 5–10 HP
Medium pipes (75–160 mm): 10–25 HP
Large pipes (above 200 mm): 30–60 HP or higher
For example, a 40HP air-cooled chiller is commonly used in medium to large pipe extrusion lines, providing reliable and efficient cooling performance.
Air-Cooled vs Water-Cooled Chillers
Air-Cooled Chillers:
Easy installation, no cooling tower required
Lower maintenance cost
Ideal for most standard industrial applications
Water-Cooled Chillers:
Higher energy efficiency
Suitable for large-scale industrial systems
Requires cooling tower and additional infrastructure
System Optimization Recommendations
To improve system stability and performance, the following configurations are recommended:
Stainless steel water tank
Automatic temperature control system
Integrated water circulation pump
These features help ensure consistent cooling performance and long-term reliability.
Conclusion
Selecting the right industrial chiller is essential for maintaining stable pipe quality, improving production efficiency, and reducing operational costs. A well-designed cooling system can significantly enhance the overall performance of pipe extrusion lines.
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Why Industrial Chillers Fail Faster in Poor Water Quality Conditions (And How to Prevent It)
2026-03-30
In industrial cooling systems, water quality plays a critical role in equipment performance and lifespan.
However, in many regions—especially in the Middle East and other areas with limited water treatment—this factor is often overlooked during chiller selection.
As a result, many industrial chillers experience premature failure, reduced efficiency, and increased maintenance costs.
Common Water Quality Challenges
In industrial environments, water may have the following characteristics:
• High alkalinity
• High mineral content
• Impurities and suspended particles
These conditions can significantly affect the internal components of a chiller system.
Impact on Chiller Performance
Poor water quality can lead to several issues:
Corrosion of Heat Exchangers
Alkaline water can cause corrosion in evaporators, especially those made with standard copper materials.
Scaling and Fouling
Minerals in the water can accumulate inside tubes, reducing heat transfer efficiency.
Reduced Cooling Efficiency
As heat exchange performance decreases, the system requires more energy to maintain the same cooling output.
Increased Maintenance Costs
Frequent cleaning, repairs, or component replacement may be required.
In cases where evaporator replacement is required, selecting the right material and design is critical to prevent recurring issues.
BOSIKAR provides customized evaporator solutions tailored to different water quality conditions, including options such as titanium tube and stainless steel designs, ensuring improved durability and long-term performance.
Why Standard Chillers Are Not Enough
Most standard industrial chillers are designed for normal water conditions and include:
• Copper tube evaporators
• Basic protective materials
These configurations may not be suitable for harsh water environments.
Recommended Anti-Corrosion Solutions
To improve durability and performance in challenging conditions, the following solutions are recommended:
• Titanium tube heat exchangers
• Stainless steel evaporators
• Proper water treatment systems
These measures can significantly extend equipment lifespan and reduce maintenance frequency.
Application in High-Risk Regions
This issue is particularly relevant in regions such as:
• Middle East
• Africa
• Industrial zones with untreated water supply
In these environments, selecting the right chiller configuration is essential.
BOSIKAR Solutions
BOSIKAR provides industrial chiller solutions designed for harsh operating conditions.
With extensive experience in the Middle East market, we have a deep understanding of local environmental challenges, including high ambient temperatures, alkaline water quality, and specific industrial usage requirements.
Unlike standard equipment suppliers, BOSIKAR focuses on delivering customized solutions tailored to real operating conditions, ensuring improved reliability, efficiency, and long-term performance.
Our solutions include:
• Anti-corrosion evaporator options
• Custom configurations based on water quality
• Stable performance in demanding environments
Conclusion
Water quality is a critical factor in industrial chiller performance that should not be overlooked.
By selecting appropriate materials and system configurations, businesses can improve reliability, reduce maintenance costs, and extend the lifespan of their cooling systems.
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Air-Cooled vs Water-Cooled Chiller Maintenance Guide
2026-03-30
Basic Difference
Air-cooled chillers dissipate heat through air, while water-cooled chillers use a cooling tower and water circulation system.
Air-Cooled Chiller Maintenance
Condenser Cleaning (Most Important)
Recommendation:
Clean every 2–4 weeksUse compressed air or water
Fan Inspection
Ensure the fans are running properly without abnormal noise.
Ventilation
Keep at least 1 meter clearance to ensure proper airflow.
Environment Condition
Avoid dusty, high-temperature, or enclosed environments.
Water-Cooled Chiller Maintenance
Cooling Tower Maintenance (Key Point)
The cooling tower must be cleaned regularly to prevent blockage and bacterial growth.
Includes:
Cleaning fill materialsRemoving dirt and algae
Water Quality Control (Very Important)
Poor water quality can lead to scaling, corrosion, and blockage.
Recommendation:
Use softened waterApply water treatment chemicals
Condenser Cleaning (Shell & Tube)
Scale buildup reduces heat exchange efficiency.
Recommendation:
Clean every 3–6 months.
Pump & Water Flow Check
Check if the pump is operating properly and water flow is stable.
Conclusion:
For air-cooled chillers, maintenance is mainly about cleaning the condenser and ensuring good airflow.
For water-cooled chillers, the key is maintaining the water system, including cooling tower cleaning and water quality control.
Air-cooled units are easier to maintain, while water-cooled systems are more efficient for large industrial applications.
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How to Select an Industrial Chiller for Film Extrusion
2026-03-23
Why Chiller is Essential for Film Extrusion?
Temperature control is critical during film extrusion.
Without stable cooling, problems will occur:
Uneven thickness
Wrinkles & bubbles
Poor transparency
Chiller ensures stable temperature, improving quality and output
Key Cooling Points
Chill Roll,Directly affects film quality
Die Head,Maintains stable extrusion temperature
How to Size the Chiller
General guideline:
1 ton output ≈ 3–5 HP chiller
100kg/h → 10–15HP
300kg/h → 30–50HP
500kg/h+ → 60–100HP
Factors to consider:
Output (kg/h)
Material (PE / PVC / PET)
Ambient temperature
Recommended Water Temperature
Leaving water temperature: 7–15°C
The more stable the temperature:
Better surface
Uniform thickness
In film extrusion, the cooling system directly affects product quality and productivity. A properly selected chiller improves stability and output.
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