Chillers are divided into air-cooled chillers and water-cooled chillers. The working principle diagram of air-cooled chillers is as follows

Working Principle of air-cooled chiller

The air-cooled chiller uses a shell and tube evaporator (or tank with coil) to exchange heat between water and refrigerant. The refrigerant system absorbs the heat load from the water and cools the water to produce cold water. The heat is brought to the finned condenser through the action of the compressor. Then it is lost to the outside air by the cooling fan (wind cooling)

Features of air-cooled chillers：

1、The air-cooled chiller does not need to be installed with a cooling water tower and is suitable for environments with poor impurities. (It is easy to mix impurities in the cold water tower, and the dust will block the cooling water circulation loop, causing the cooling capacity to drop).

2、Air-cooled chillers are most suitable for areas with poor water quality, and can save other accessories for chillers.

3、With a large-capacity condenser, it can be easily operated even in heat.

4、Minimize floor space and easy installation

5、The air-cooled chiller adopts a top-out air design.

The working principle diagram of the water-cooled chiller is as follows:

Schematic diagram of the principle and flow of water-cooled chillers

The water-cooled chiller uses a shell and tube ( or tank with coil ) evaporator to exchange heat between water and refrigerant. The refrigerant system absorbs the heat load of the water and cools the water to produce cold water. The heat is brought to the shell and tube condenser through the action of the compressor. The refrigerant exchanges heat with the water, so that the water absorbs the heat and then takes the heat out of the cooling tower through the water pipe to dissipate (water cooling)

Features of water-cooled chillers:

1. High-quality compressors are the heart of industrial chillers (brand-new original compressors from Europe, America and Japan, with built-in safety protection, low noise, power saving and durability).

2. The box-type evaporator has a built-in automatic water replenishment device, which saves the need for the expansion water tank in the engineering installation to facilitate installation and maintenance, and is suitable for special occasions such as large temperature difference and small flow.

3. The water-cooled condenser is made of the latest high-efficiency externally threaded copper pipe, with large heat dissipation and small size. Using the latest CAD/CAM processing technology, with CNC machining center to complete the production, compact structure, high reliability, beautiful appearance, high efficiency and energy saving.

4. Industrial chiller unit configuration: equipped with a single-chip control system, built-in compressor dryer filter and expansion valve, maintenance hand valve interface and other devices, to ensure the reliable and safe operation of the machine to facilitate maintenance and repair.

5. The multi functional operation panel of the industrial water chiller is equipped with ammeter, control system insurance, compressor switch button, water pump switch button, electronic temperature controller, various safety protection fault lights, unit start-up and operation indicator, simple operation and convenient use . Industrial chiller unit configuration: equipped with a single-chip control system, built-in compressor drying and expansion valve, maintenance hand valve interface and other devices, to ensure the reliable and safe operation of the machine, and facilitate maintenance and repair.

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.

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:

1. The warm water comes back from the CNC.

2. It enters the evaporator inside the chiller.

3. The refrigerant in the evaporator absorbs that heat and turns into a gas.

4. The gas gets compressed—its temperature and pressure rise sharply.

5. That hot gas goes through the condenser. Fans blow outside air across coils, removing the heat.

6. 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.

The gas rice steaming cabinet has the characteristics of high efficiency, energy saving, fast cooking, multi-function, easy operation and cleaning, etc.

Characteristics of a gas steamer cabinet:
1.Efficient and Energy-saving: Gas steamer cabinets typically use natural gas or liquefied gas as their energy source, which is more energy-efficient compared to electric power, helping to reduce costs.
2.Quick Steaming: Using gas as an energy source provides high temperatures, allowing for the rapid generation of steam to sufficiently steam food in a shorter time.
3.Temperature Control: They feature precise temperature control, allowing for adjustments to steam temperature as needed, ensuring even heating of food.
4.Multi-functionality: Apart from steaming rice, some gas steamer cabinets are designed for multi-purpose use, suitable for steaming vegetables, meats, and other foods.
5.Ease of Operation: Typically designed with simplicity in mind, they are easy to operate with intuitive control panels and buttons.
6.Space-saving: Compared to traditional steaming equipment, gas steamer cabinets are usually more compact in design, helping to save kitchen space.
7.Easy to Clean: Most gas steamer cabinets are made of stainless steel or other easy-to-clean materials, making them relatively easy to maintain.
8.Durable: Constructed from sturdy and durable materials, gas steamer cabinets generally have a long lifespan.

Our models PZD-4040-01, PZD-4040-02 and PZD-5269-1, PZD-5269-2 further demonstrate the benefits of pizza ovens.

Applications:
● 1.Home Use: Electric pizza ovens are popular choices for home cooks who want to enjoy freshly baked pizzas without the hassle of using traditional ovens. They are compact and can be easily placed on countertops, making them suitable for smaller kitchens.
● 2.Quick Cooking: These ovens are known for their quick preheating times, allowing you to cook pizzas faster compared to conventional ovens. This is particularly helpful when you're short on time or hosting a gathering.
● 3.Versatility: While primarily used for pizzas, electric pizza ovens can also bake other items like flatbreads, calzones, cookies, and even reheat leftover food.

Features:
●1.Temperature Control: Electric pizza ovens typically come with adjustable temperature controls, enabling you to set and maintain the exact temperature required for baking different types of pizzas. This precision helps achieve consistent and even cooking.
●2.Timer: Many electric pizza ovens have built-in timers that allow you to set the cooking time. The oven will automatically shut off once the timer reaches zero, preventing overcooking and ensuring your pizza comes out perfectly.
●3.Compact Design: These ovens are designed to save space, making them ideal for apartments or kitchens with limited countertop area. Their compact size doesn't compromise their cooking capabilities.
●4.Ease of Use: Electric pizza ovens are user-friendly and don't require any special skills to operate. Just place the pizza on the designated rack or stone, set the temperature and timer, and let the oven do the rest.
●5.Consistent Results: With precise temperature control and even heat distribution, electric pizza ovens provide consistent results, ensuring that your pizzas are cooked to perfection every time.
●6.Easy Cleaning: Many electric pizza ovens come with removable parts that are easy to clean. This includes removable cooking racks, crumb trays, and sometimes even non-stick interiors.
●7.Energy Efficiency: Electric ovens are generally energy-efficient compared to traditional ovens, as they heat up quickly and don't require preheating for extended periods.

Electric Ovens for Baking

Pros:
1.Even Heat Distribution:
●Electric ovens typically provide more consistent and even heat, which is crucial for uniform baking.
●They often have multiple heating elements that ensure the temperature is evenly distributed throughout the oven.

2.Temperature Accuracy and Stability:
●Electric ovens generally have better temperature control and stability.
●They maintain the set temperature more consistently, reducing fluctuations that can affect baking results.

3.Dry Heat:
●Electric ovens produce a dry heat, which is ideal for achieving crispy textures in baked goods like cookies, pastries, and crusts.

4.Convection Features:
●Many electric ovens come with convection settings that use a fan to circulate hot air, promoting even browning and faster cooking times.
●This is particularly useful for baking multiple trays at once.

5.Self-Cleaning Options:
●Electric ovens often come with self-cleaning features that make maintenance easier.

Cons:
1.Operational Costs:Electric ovens can be more expensive to run, especially in areas where electricity rates are high.
2.Preheating Time:Electric ovens typically take longer to preheat compared to gas ovens, which might be inconvenient for some users.
3.Power Outages:In the event of a power outage, an electric oven becomes unusable, which can be a significant drawback.

Gas Ovens for Baking

Pros:
1.Moist Heat:Gas ovens produce a more humid heat, which is beneficial for baking breads and items that require a moist interior and good rise.
2.Operational Costs:In areas where natural gas is less expensive than electricity, gas ovens can be cheaper to operate.
3.Faster Preheating:Gas ovens typically preheat faster than electric ovens, which can save time.
4.Usage During Power Outages:Gas ovens can still be used during power outages, provided they have a manual ignition option.

Cons:
1.Uneven Heat Distribution:Gas ovens often have hot spots and less even heat distribution, which can result in uneven baking.
2.Temperature Control:Maintaining a precise and consistent temperature can be more challenging in gas ovens.
3.Humidity:The humid heat produced by gas ovens might not be ideal for achieving crispy textures in baked goods.
4.Installation Costs:If a gas line is not already installed, the cost to install one can be significant.
5.Safety Concerns:There is a potential risk of gas leaks, which requires proper maintenance and monitoring.

Conclusion

For most baking tasks, electric ovens are generally preferred due to their even heat distribution, temperature accuracy, and features like convection baking. However, gas ovens have their own advantages, particularly for baking items that benefit from a moist cooking environment, such as breads. The choice ultimately depends on the specific baking needs, budget, and personal preferences.

A gas oven is a cooking device that uses natural gas or liquefied gas as fuel. They are very common in kitchens and offer an efficient, flexible and precise way to cook.

So HLY-102F/204F/306F is a product worth recommending.

It's Features:

Features of a Gas Oven:
1.High Temperature Capability: Gas ovens can quickly reach high temperatures, making them suitable for fast cooking and baking that require high heat.
2.Precision Temperature Control: Gas ovens typically feature precise temperature control, allowing easy adjustment of cooking temperatures to ensure food quality.
3.Even Heat Distribution: Gas ovens often achieve even heat distribution, ensuring uniform heating during the cooking process and preventing issues like burning or undercooking.
4.Instantaneous Response: Gas ovens respond quickly when adjusting temperatures, providing flexibility in the cooking process without the need for prolonged preheating.
5.Culinary Versatility: Gas ovens come with various burners to meet diverse cooking needs, including baking, roasting, and grilling.
6.Energy Efficiency and Environmentally Friendly: Gas ovens are relatively energy-efficient and environmentally friendly compared to some other types of ovens, reducing energy waste.
7.Convenient Usage: Gas ovens are easy to start and shut off, with simple operation and minimal wait time for preheating.
8.Backup Energy Source:In areas with unstable electricity supply, gas ovens can serve as a backup energy source, ensuring uninterrupted cooking.

Please note that when using a gas oven, it is essential to follow relevant safety regulations, ensuring good ventilation and safe gas pipeline connections to prevent accidents.

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