Water Cooled Chiller Units & Pump Station Systems —— Your Energy-Efficient HVAC Solution

Water Cooled Chiller Units & Pump Station Systems —— Your Energy-Efficient HVAC Solution

Ruidong Group prioritizes customers' needs, aiming to solve problems and maximize cost savings. For end-users and projects, we ensure quick product understanding, fast installation, improved efficiency, and reduced installation/operation costs. 

Explore our new water cooled chiller units & pump station systems — learn more about their advantages and working principles:

Figure 1 - 3D illustration of pump station products

Product Advantages: 

• Highly Integrated Design: The chiller and pump station system (including pumps, water tanks, plate heat exchangers and other components) are integrated into a single framework. Its compact structure minimizes footprint, making it ideal for installation sites with limited space.

• Simplified On-Site Installation: The unit undergoes full assembly, commissioning and testing at the factory. On-site, only simple waterway and electrical connections are needed to put it into operation, significantly reducing installation/debugging time, construction cycles and labor costs.

• Strong Environmental Adaptability: The equipment performs well across diverse environments, including high/low temperatures and high humidity. It is also designed with waterproof, dustproof and anti-corrosion features to ensure reliable operation even in complex conditions.

Working Principle:

Cold Water Circulation (Chiller - Plate Heat Exchanger - Water Pump Path)

1. Chiller: Through components such as compressors, condensers, and evaporators, it consumes electrical energy to drive the cyclic phase change of refrigerants. Heat is absorbed in the evaporator to produce low-temperature cold water — for example, cooling water from room temperature to around 7°C — providing a cold source for the system.

2. Plate Heat Exchanger: The low-temperature cold water from the chiller exchanges heat here with water from another circuit (such as the user-side or hot water-related loop), transferring cold energy to it. After its temperature rises slightly, the water is pumped back to the chiller via the water pump, completing the cold water side circulation and ensuring continuous cooling supply.

3. Water Pump: Provides power for the cyclic flow of cold water between the chiller and the plate heat exchanger, enabling efficient transportation of cold water and ensuring smooth transfer of cold energy.

User-Side and Hot Water-Related Circulation (Plate Heat Exchanger - Water Pump - Water Tank - User-Side Path)

1. Plate Heat Exchanger (PHE): It receives the cooling capacity from the chiller (or may also involve heat recovery, etc., and reverses when heating is required). It exchanges heat with the water in the user-side loop, transferring cooling (or heating) capacity to the user-side circulating water.

2. Water Pump: Drives the flow of user-side circulating water. After heat exchange in the PHE, the water carrying cooling (or heating) capacity is delivered to the water tank and then distributed to the user side, providing cooling (or heating) for air conditioning terminals in the building (such as fan coils, air handling units, etc.).

3. Water Tanks (separate for cold and hot water): Serve to store and regulate water volume as well as stabilize water temperature. The cold water tank temporarily stores cold water from the PHE, which can buffer and adjust when user-side demand changes to ensure stable water supply. For hot water scenarios, the hot water tank can store hot water after heat exchange and supply it to the user side as needed for heating purposes.

4. User Side: Air conditioning terminal equipment in the building (e.g., fan coils) exchanges heat with the circulating water from the water tank, releasing cooling (or heating) capacity into the room to regulate indoor temperature and create a comfortable environment.

To summarize: The chiller produces cold, which circulates via the plate heat exchanger and pumps. The water tank stabilizes flow, enabling the user side to regulate indoor temperature and humidity for HVAC needs. For heating, the principle extends to heat recovery and heat pump cycles.

Ruidong Group can provide you with a complete and high-quality product list. Here is an introduction to the advantages of our products:

Host Products: Water-cooled Screw Chillers:

Figure 2- Water-cooled screw unit

1. Equipped with renowned semi-hermetic screw compressors – simple structure, low failure rate.

2. Cooling capacity 200kW-3000kW – wide adaptability.

3. Stable operation, resistant to high ambient temperatures.

4. Self-developed shell-and-tube evaporators/condensers, full unit customizable.

5. Advanced microcomputer touchscreen with optimized, user-friendly interface.

6. RS485 interface for remote control.

7. Suitable for commercial buildings, factories, hospitals & more.

Pump Station: Powers the circulation of cooling water and chilled water

Figure 3- Pump station unit

1. Dynamically adjusts flow and pressure based on demand, achieving both temperature control and energy efficiency.

2. Equipped with high-efficiency pumps, enhancing overall system energy performance.

3. Single-point interface control for cooling towers, enabling precise linkage to boost efficiency.

4. Reinforced steel structure base, upgrading both corrosion resistance and safety.

5. Customizable to requirements, adapting to diverse scenarios.

Plate Heat Exchanger: Superior heat exchange efficiency

Figure 4- Plate heat exchanger

1. High Efficiency & Energy Saving: Optimized plate design with large heat exchange area for high efficiency.

2. Compact Structure: Tightly arranged plates, small in size and light in weight, enabling easy installation and maintenance.

3. Flexible Adaptation: Plate quantity adjustable to meet diverse heat exchange needs.

4. Strong Corrosion Resistance: Made of stainless steel, titanium, etc., with excellent anti-corrosion performance.

5. Easy to Clean & Maintain: Detachable plates for convenient cleaning and low maintenance costs.

6. Wide Application: Suitable for multiple fluids and working conditions (high temperature, high pressure, corrosive environments, etc.)

Water Tank: Ensures efficient system operation

Figure 5- Water tank

1. Compatible with water-cooled units and pump stations, boosting overall system efficiency.

2. Made of high-quality materials, offering excellent corrosion and pressure resistance.

3. Simple design for easy installation; internal cleaning is convenient, saving maintenance costs and time.

4. Customizable with multiple options for capacity, size and shape, adapting to different cooling scales.

5. Strong working condition adaptability, stable performance and low failure rate.

Ethylene Glycol Supplement Device: Provides stable and reliable coolant replenishment

Figure 6- Ethylene glycol supplement device

1. Automatic replenishment of ethylene glycol, precisely controlling concentration to improve cooling efficiency.

2. Anti-corrosion protection for metal components in the system.

3. Anti-freeze function in low temperatures, preventing frost damage to the cooling system.

4. Enhances heat conductivity, boosting system operational efficiency.

5. Stabilizes concentration to prevent overheating and excessive pressure, safeguarding system safety.

Terminal Air Handling System:

Figure 7- Terminal air handling unit

Ruidong Group is committed to providing you with a diverse range of terminal air handling units, including but not limited to fan coils, ceiling-mounted air handling unit, and Horizontal air handling unit. Our product line covers various models and specifications, offering personalized customization services to meet the needs of different places and requirements.

Ruidong Group offers more than just products; we provide a complete set of HVAC solutions. Our goal is to create a comfortable, healthy, and energy-efficient indoor environment for you through professional technical support and high-quality customer service.

Choose Ruidong Group, choose professionalism and trust. Let us work together to build a better indoor climate.