Water-cooled chillers are essential for maintaining optimal temperatures in various industrial and commercial settings. When choosing a chiller, understanding its efficiency ratings is crucial. Chiller efficiency ratings are standardized metrics used to measure the energy efficiency of chillers. Here are three common efficiency ratings:
Seasonal Energy Efficiency Ratio (SEER): SEER is typically used to measure the energy efficiency of air conditioning and heat pump systems. It represents the cooling output of a chiller during a typical cooling season (in British thermal units or BTUs) divided by the energy consumed in watt-hours. SEER takes into account the varying operating conditions throughout the cooling season, including part-load conditions.
Energy Efficiency Ratio (EER): EER is another metric used to evaluate the energy efficiency of chillers, similar to SEER. It represents the cooling output in BTUs divided by the electrical power input in watts under standard rating conditions. Unlike SEER, EER is measured at a specific operating condition, typically at 100% load capacity.
Coefficient of Performance (COP): COP is a measure of the ratio between the cooling or heating output of a chiller and the energy input. For cooling applications, COP is the ratio of cooling output in BTUs to the energy input in watt-hours. A higher COP indicates a more energy-efficient chiller since it produces more cooling per unit of energy consumed.
It's important to note that the specific definitions, calculation methods, and rating conditions may vary depending on regional standards and regulations. When comparing chillers, it is advisable to consider the appropriate efficiency rating for your specific application and region.
It's worth mentioning that SEER and EER are commonly used for air-cooled chillers, while COP is often used for water-cooled chillers.It should be noted that the energy efficiency ratio of a chiller is affected by operating conditions, ambient temperature, cooling load, and the manufacturer's technology and design level. When choosing a chiller, in addition to the energy efficiency ratio, other factors such as cooling capacity, control accuracy, reliability, and maintenance requirements should also be considered comprehensively to meet specific application needs.
The importance of traditional industries in our lives is becoming more and more obvious, and the importance of related equipment that assists traditional processing industries is also becoming more and more obvious. Air-cooled chillers have become an indispensable presence in the plastics processing industry. An excellent chiller can greatly improve the surface finish of the plastic products we see now, and can also greatly reduce the probability of marks, textures and internal stress on the surface of plastic products, ensuring that the plastic products that reach consumers will not shrink or appear. In the case of deformation, choosing an air-cooled chiller can also help more convenient demoulding and product molding when processing plastic products, which greatly improves the production efficiency and product quality of the industry. Air-cooled chillers have become an indispensable refrigeration auxiliary equipment for manufacturers in the plastics industry.
Therefore, the normal operation of the industrial chiller is very important, and the lack of refrigerant will affect the cooling effect of the chiller. Air cooling is the cause of insufficient refrigerant in the chiller.
1. The newly installed chiller is not filled with refrigerant as required.
2. The air tightness of the system is not good, resulting in refrigerant leakage.
3. Improper operation and maintenance may lead to refrigerant leakage.
Insufficient refrigerant in an industrial chiller can lead to several harmful consequences, including:
Reduced cooling capacity: The refrigerant is responsible for absorbing heat from the process fluid and transferring it to the environment. If there is not enough refrigerant, the cooling capacity of the chiller will be reduced, leading to higher process fluid temperatures and decreased efficiency.
Increased energy consumption: When the chiller is not operating at full capacity, it may need to run for longer periods to maintain the required temperature, resulting in higher energy consumption and increased operating costs.
Component failure: Running an industrial chiller with insufficient refrigerant can cause the compressor to overheat and eventually fail. This can result in costly repairs and extended downtime.
Reduced lifespan: Operating an industrial chiller with insufficient refrigerant can cause excessive wear and tear on the system's components, reducing its lifespan and requiring more frequent maintenance.
Safety hazards: Low refrigerant levels can cause the chiller to operate at higher pressures, which can create safety hazards for workers and potentially lead to equipment damage or failure.
Overall, insufficient refrigerant can have significant negative impacts on the performance, efficiency, and safety of an industrial chiller. It is crucial to ensure that the chiller is properly maintained and that refrigerant levels are regularly checked and adjusted as needed.
Water-cooled chiller is a cooling water device that can provide constant temperature, constant current and constant pressure. A chiller is a machine that achieves refrigeration through vapor compression or absorption cycles. These liquids can flow through heat exchangers to cool the air or equipment. The industrial chiller can always output ice water with a lower temperature than the ambient temperature. It can be used wherever cooling is required, either direct cooling or indirect heat exchange. The main components of a water-cooled chiller are compressor, condenser, evaporator, water pump, and water tank.
Chillers have a wide range of applications. The chiller can be used to cool the injection mold, improve the quality of plastic products, cool the vacuum coating, control the temperature of the vacuum coating machine, cool the food industry, fast cooling processing, chemical industry, effectively control the temperature of chemicals, cooling buildings, concrete fast Cooling and condensation, etc.
According to the application, the chiller can be divided into industrial chiller, screw chiller, electroplating chiller, oxidation chiller, laser chiller, coating chiller, welding professional chiller, ultrasonic chiller, extruder chiller, injection molding chiller Special chiller, chemical chiller, electrophoretic paint chiller, pharmaceutical chiller, food chiller, stainless steel chiller, circuit board chiller, blister chiller, coating chiller, according to the working conditions Divided into air-cooled chillers, water-cooled chillers, low-temperature chillers, constant temperature chillers, etc.
In industrial production, stable process cooling isn’t just a support function — it’s often the difference between smooth operation and costly downtime. At OUMAL Refrigeration Machinery Co., Ltd, we’ve worked with customers across injection molding, extrusion, thermoforming, and more. Over time, one thing has become clear: choosing the right chiller matters.
Not All Cooling Needs Are Created Equal Different industries — even different machines — have very different cooling requirements. For example, a customer running a small injection molding line may only need a compact 8 ton chiller to maintain mold temperatures within a tight range. These chillers are space-efficient and offer precise control, making them a practical choice for localized cooling tasks.
On the other hand, when the scale increases or when multiple machines share a cooling circuit, something like a 15 TR chiller tends to be a better fit. We’ve seen these used successfully in mid-sized production lines where reliability and steady performance are non-negotiable.
For large plants, especially those operating around the clock, a 100 ton water cooled chiller can provide both capacity and energy efficiency. Water-cooled systems require more infrastructure — including cooling towers and proper piping — but in return, they offer stable performance in high ambient environments and over long production runs.
Built for Industry, Backed by Experience What sets OUMAL apart is not just the equipment itself, but the way we build around customer needs. Our manufacturing team can handle a wide range of options and customizations, which means the chiller you receive isn’t off-the-shelf — it’s made to work the way you do.
We’ve served customers in over 20 countries, including the US, Australia, Saudi Arabia, Vietnam, and Brazil. The variety of applications we’ve supported — from blown film to compound mixing — gives us the insight to ask the right questions before making a recommendation. Our goal is always to match cooling performance with process demand, rather than over- or under-sizing.
Long-Term Value Comes from the Right Start One thing we often remind our partners: a properly selected chiller does more than control temperature. It protects your equipment, shortens your cycle times, and helps maintain product consistency. That’s especially important in processes where a few degrees can mean the difference between a good batch and scrap.
Whether you’re starting with a single machine or upgrading an entire line, OUMAL is ready to help you choose wisely — whether that’s an 8 ton, 15 TR, or 100 ton water cooled chiller.
When someone new joins our engineering team, one of the first questions they usually ask is: “So what’s the difference between air cooled and water cooled chillers—and which one’s better?”
It’s a good question. And after installing, maintaining, and even troubleshooting both systems in dozens of customer factories, here’s how we usually explain it.
Let’s Start with the Basics
An air cooled chiller is essentially a cooling unit that uses ambient air to remove heat from a circulating liquid—usually water or a water-glycol mix. It's often used to keep production equipment or buildings at a stable temperature.
There’s no need for a cooling tower or a complex water pipeline. It uses built-in fans to get the job done.
This setup is widely chosen in:
Injection molding plants
Food packaging lines
Laser processing workshops
HVAC systems for commercial buildings
If you’ve got space outside and want to avoid dealing with water quality issues, air cooled is probably the better call.
What’s Inside the Unit?
Rather than listing textbook components, here’s what we see under the cover of atypical air cooled water chiller we ship:
A compressor that acts like the system’s engine
An evaporator that draws heat out of your process water
A condenser with aluminum fins, cooled by strong fans
An expansion valve to adjust refrigerant pressure
A control panel—the brain of the system
Some models include water pumps and tanks. Others are modular—you can connect them to existing infrastructure.
Here’s How It Works (Simplified)
Let’s say you’re using a CNC machine that heats up during operation. Here’s how the air cooled chiller steps in:
The warm water comes back from the CNC.
It enters the evaporator inside the chiller.
The refrigerant in the evaporator absorbs that heat and turns into a gas.
The gas gets compressed—its temperature and pressure rise sharply.
That hot gas goes through the condenser. Fans blow outside air across coils, removing the heat.
The refrigerant turns back into a liquid, and the cycle repeats.
Your machine keeps running cool—and you don’t need a water tower or much operator attention.
Why Do Customers Choose Air Cooled Units from Us?
Some of our long-term clients choose air cooled chiller systems for one reason: they just work. Even without an in-house technician, these systems are straightforward to install, easy to control, and rarely break down when used correctly.
Clients also appreciate that we offer:
Tailored sizing based on actual load
Remote monitoring options
Short lead times, even for custom orders
Reliable after-sales support (yes, even overseas)
As a practical air cooled chiller supplier, we’re not here to sell what’s biggest or most expensive—we help customers find what runs stably for years.
In modern manufacturing, hot melt adhesive is widely used in various industries, including packaging, woodworking, electronics, and automobiles. However, the traditional manual scraping gun method has some inconveniences in large-scale production, such as low production efficiency and high labor costs. In order to overcome these challenges, engineers have developed hot melt adhesive automatic scraping gun technology, providing companies with a tool to improve efficiency and reduce costs.
Limitations of traditional manual scraper guns
In traditional hot melt adhesive applications, workers need to manually bring the hot melt adhesive gun close to the target surface and manually control the spraying and scraping process of the hot melt adhesive. This method has several disadvantages. First, the manual scraper gun needs to be repeatedly positioned and controlled, and the errors caused by this are difficult to avoid, resulting in uneven coating and unstable quality. Second, long-term use of manual scrapers can easily cause worker fatigue and reduce worker work efficiency. In addition, manual scrapers also cause waste of hot melt adhesive because operators often find it difficult to accurately control the amount of hot melt adhesive used.
Advantages of hot melt adhesive automatic scraper
In order to solve the problems of traditional manual scraper, automation technology is gradually applied to the hot melt adhesive field. The hot melt adhesive automatic scraper system consists of a coater, a sensor and a control system. The coater can spray the hot melt adhesive evenly onto the target surface through precise control. At the same time, the sensor can monitor the shape and state of the target surface and automatically adjust the height and speed of the scraper to ensure the consistency and accuracy of the coating. The control system can realize the automated hot melt adhesive scraper process according to the preset parameters and process requirements.
Application fields of hot melt adhesive automatic scraper
Hot melt adhesive automatic scraper technology has been widely used in many industries. In the packaging field, it is used in carton sealing, bag sealing, tape bonding and other links to improve production speed and quality stability. In the woodworking industry, hot melt adhesive automatic scraper can be used in furniture manufacturing, board bonding and other processes to improve production efficiency and product quality. In the electronics industry, automatic scrapers can be used in circuit board assembly, component packaging and other processes to improve work efficiency and reliability. In the automotive manufacturing field, hot melt adhesive automatic scraper can be used in body sealing, interior bonding and other processes to improve bonding effect and product reliability.
The application of hot melt adhesive automatic scraper technology has brought great benefits to all walks of life. It can improve production efficiency, reduce labor costs, ensure the consistency of coating quality, and reduce the waste of hot melt adhesive. With the continuous development of automation technology, hot melt adhesive automatic scraper will be used in a wider range of fields and continue to create greater economic benefits and development opportunities for enterprises.
As an efficient and convenient bonding equipment, hot melt adhesive machine is widely used in packaging, textile, automobile manufacturing and other fields. However, in actual use, hot melt adhesive machine often encounters a thorny problem - carbonization. The generation of carbonization not only affects the normal operation of the equipment, but may also lead to product quality degradation or even equipment damage. Therefore, understanding how to effectively prevent carbonization, the impact of carbonization on use, and the correct treatment method after carbonization is crucial to ensure the stability of the hot melt adhesive machine and extend its service life.
Carbonization is mainly caused by the following factors:
· Too high temperature: Hot melt adhesive needs to melt at a certain temperature, but if the temperature is set too high or the equipment is in a high temperature state for a long time, it will cause the colloid to decompose.
· Too long residence time: The hot melt adhesive stays in the heating system for too long and fails to be discharged in time, which is prone to oxidation and decomposition.
· Air ingress: If the equipment is not well sealed, oxygen in the air enters the adhesive tank or pipe, which will accelerate the oxidation reaction of the colloid.
· Material problem: Some types of hot melt adhesives are sensitive to high temperatures and are more prone to carbonization.
· Equipment aging: Hot melt adhesive machines that have been used for a long time may have problems such as aging of heating elements and failure of temperature control systems, which may lead to abnormal temperature increases.
In order to reduce the occurrence of carbonization of hot melt adhesive machines, the following are some practical preventive measures:
1. Reasonable temperature control
· Set the appropriate heating temperature according to the type of hot melt adhesive used. It is generally recommended to control the temperature at the lower limit of the recommended range to reduce the risk of colloid decomposition.
· Regularly check whether the temperature control system is accurate to avoid abnormal temperature rise due to equipment failure.
2. Shorten the residence time of colloid
· During the production process, minimize the residence time of hot melt adhesive in the heating system. The production process can be optimized to speed up the flow rate of colloid and reduce the time the colloid is exposed to high temperature.
· If the equipment is out of use for a long time, the residual colloid in the glue tank and pipeline should be cleaned in time to avoid carbonization due to long-term standing.
3. Maintain the tightness of the equipment
· Ensure that the hot melt adhesive machine's adhesive tank, pipes, nozzles and other parts are well sealed to prevent air from entering and contacting the adhesive.
· For open-design equipment, consider installing a dust cover or using an inert gas (such as nitrogen) for protection to reduce the occurrence of oxidation reactions.
4. Regularly maintain the equipment
· Regularly check the heating elements, temperature control system and pipe connections of the hot melt adhesive machine to ensure that the equipment is operating normally.
· When cleaning the adhesive tank and pipes, the residual colloid should be thoroughly removed to avoid excessive accumulation and carbonization.
5. Choose high-quality hot melt adhesive
· Different types of hot melt adhesives have different tolerance to high temperatures. It is recommended to choose products with good stability and anti-aging properties.
· When changing the brand or model of hot melt adhesive, be sure to test it first to ensure that it is compatible with the existing equipment.
6. Pay attention to the frequency of adding glue
·During the production process, hot melt glue should be added in an appropriate amount according to actual needs to avoid adding too much glue at one time, which will cause some glue to be carbonized due to long-term non-use.
Once carbonization is found in the hot melt adhesive machine, the following steps should be taken in time to deal with it:
1. Stop the equipment immediately
·When carbonization is detected, the hot melt adhesive machine should be turned off immediately and the heating operation should be stopped to prevent further carbonization.
·Cut off the power supply and wait for the equipment to cool down completely before proceeding with the subsequent operation
2. Clean carbides
· Use special tools or chemical cleaning agents to remove carbides on the adhesive tank, pipes and nozzles.
Common cleaning methods include:
o Mechanical cleaning: Use scrapers, brushes and other tools to manually remove carbides, which is suitable for mild carbonization. o Chemical cleaning: Select a cleaning agent suitable for hot melt adhesive materials (such as professional adhesive remover), inject it into the equipment and soak it for a period of time, and rinse it with clean water after the carbides soften.
o High temperature burning: For stubborn carbides, high temperature burning can be used for cleaning, but it is necessary to control the temperature to avoid damaging equipment components.
3. Check the equipment condition
· After cleaning, carefully check whether there is wear or damage to the glue tank, pipes and nozzles. If necessary, replace damaged parts in time to ensure the normal operation of the equipment.
· Check the performance of the heating elements and temperature control system to ensure that they are working properly.
4. Recalibrate the temperature setting
· Before restarting the equipment, recalibrate the temperature setting to ensure that it meets the requirements for the use of hot melt adhesive.
· Perform a trial run to observe whether the equipment is operating normally and whether the glue flows out evenly.
5. Strengthen daily maintenance
· Analyze the causes of carbonization problems that have occurred and formulate improvement measures to avoid similar situations from happening again.
· Strengthen the daily maintenance of equipment, clean the rubber tank and pipelines regularly, and ensure that the equipment is always in good condition.
The elastic string glue gun is specially developed and designed for the rubber application of sanitary napkins and diaper products. It has the advantages of uniform, delicate and strong covering power. It adopts an air-on-air-off design, which is responsive and reliable. Built-in filter can reduce failures caused by clogged nozzles. Built-in imported high-quality sealed structural components ensure stable operation and long-lasting durability of the gun body. The solenoid valve of the gun body can be powered by DC24V or AC220V according to the user's requirements. Can be modified and applied to other brands of hot melt adhesive equipment according to user requirements.
1. Application of the latest design concepts and balancing technology: Adopting the most advanced design concepts and balancing technology may mean higher work efficiency and a better user experience.
2. Increase the service life of the gun body and reduce maintenance: By improving the design and using high-quality components, the service life of the gun body is increased and maintenance costs are reduced accordingly.
3. Imported core components: The use of imported core components can improve the overall quality and stability of the spray gun, thereby extending its life and improving performance.
4. The number of glue breaks is as high as 3600 times/minute: This shows that the spray gun is fast and reliable in operation and is suitable for mass production needs.
5. Winding glue spraying method: ensure that each rubber band is firmly fixed within 360 degrees, improving product quality and efficiency.
6. High-efficiency and powerful back-extraction module: it can cleanly disconnect the glue, avoid unnecessary impurities or tailing, and ensure production quality.
7. Dual guide function: ensures that each rubber band can be wound accurately, avoiding waste and errors, and improving production efficiency and quality.
Hot melt glue machine is a common industrial equipment, widely used in carton packaging, cardboard manufacturing and other industries. It heats the solid glue block to convert it into molten glue, and then applies the glue to the cardboard by spraying or coating to achieve the bonding effect. The following will introduce the application of hot melt glue machine on cardboard.
1. Cardboard packaging: Hot melt glue machine plays the role of bonding cardboard in cardboard packaging. When making cartons, the cardboards need to be firmly connected to ensure that the structure of the carton is strong and can withstand heavy objects and vibrations during transportation. The hot melt glue machine can spray hot melt glue on the seams of the cardboard or other locations that need to be bonded. The glue liquid quickly cools to form a strong bonding layer, which firmly connects the cardboards together.
2. Cardboard repair: During cardboard packaging or carton transportation, the cardboard may be damaged or cracked due to external impact or other reasons. The hot melt glue machine can glue the damaged parts together by spraying hot melt glue, repair the damage of the cardboard, and maintain the integrity and service life of the cardboard.
The application of hot melt glue machine on cardboard has the following advantages:
1. High efficiency: The hot melt glue machine can quickly melt the solid glue block into a molten liquid, and the glue liquid quickly cools down after contacting the cardboard to form a strong adhesive layer. This high efficiency can improve production efficiency and reduce downtime in the process.
2. Uniform coating: The hot melt glue machine can achieve uniform spraying or coating of the glue liquid, ensuring that all parts of the cardboard can be fully bonded. This is very important for quality control in the cardboard manufacturing and packaging process.
3. Environmental protection: The hot melt adhesive used in hot melt adhesive machines is usually made of environmentally friendly materials, does not contain organic solvents and volatile organic compounds, and does not pollute the environment.
Hot melt adhesive machine provides a reliable bonding solution and is widely used in carton packaging, cardboard manufacturing and other industries, providing reliable packaging materials for product transportation and protection.
Hot melt glue machines are versatile tools widely used in various industries and for numerous applications. These machines have found innovative applications that have revolutionized the way we approach tasks requiring adhesion and precise bonding.
One of the most notable innovations in the application of hot melt glue machines is in the realm of packaging. Traditionally, packaging processes relied on adhesives that required drying time, leading to inefficiencies in production lines. However, hot melt glue machines offer a faster alternative that bonds instantly upon contact, significantly speeding up packaging operations and improving overall efficiency.
Another area where hot melt glue machines have made a significant impact is in the field of woodworking. These machines are now commonly used in woodworking shops for tasks such as edge banding, furniture assembly, and veneer application. The precise application of hot melt adhesive ensures strong and durable bonds, making it an indispensable tool for carpenters and woodworkers.
Beyond traditional industries, hot melt glue machines have also found innovative applications in fields such as crafts and DIY projects. Crafting enthusiasts use these machines to create intricate designs, attach embellishments, and assemble various materials with ease. The precision and control offered by hot melt glue machines make them essential tools for artists and hobbyists looking to bring their creative visions to life.
Moreover, hot melt glue machines have found applications in the medical industry, particularly in the assembly of medical devices and equipment. The sterile nature of hot melt adhesives, coupled with the ability to create strong bonds quickly, makes them ideal for medical applications where precision and reliability are paramount.
In conclusion, hot melt glue machines have evolved beyond simple tools for basic adhesion tasks to become indispensable assets in a wide range of industries. Their ability to provide instant bonding, precision application, and versatility have led to innovative applications that continue to push the boundaries of what is possible. As technology advances and new materials are developed, the applications of hot melt glue machines are likely to expand even further, driving innovation across multiple sectors.
