Product Description
55kw 72kW Split Ducted Air Conditioner Unit with Scroll Compressor
Cooling capacity 20kW ~ 104kW
Product Description
11 sizes available ranging from 19.5 kW to 103.7 kW cooling capacity.
Cooling only and heat pump version.
Wide application as hotel, apartment, villa, factory, shopping center, office building, school, etc.
Panels and frame are made from metal steel protected with polyester powder painting to ensure total resistance to atmospheric agents.
High efficiency scroll compressor for the whole range, with built-in thermal overload cut-out and crankcase heater, mounted on rubber vibration dampers.
Compact indoor design, long air supply distance.
Outdoor units are equipped with low noise axial fans.
Indoor units are equipped with quiet centrifugal fans.
Split installation, connected by means of flare/welding coupling.
Easy operation line controller:
- Cooling/Heating/Fan/Auto
- Timing On/Off
- Error indication
Multi safety protection
- High/low pressure protection
- Time delay and antifreeze switch
- Phase sequence relay
- Current overload protection
- Overheat protection
OPTIONAL
Additional electric heater on indoor unit
Additional heating coil on indoor unit
TECHNICAL DATA
| Mod. | 20 | 25 | 32 | 36 | 42 | 48 | ||
| Nominal cooling capacity* | kW | 19.5 | 24.8 | 31.2 | 35.6 | 41.3 | 47.4 | |
| Nominal heating capacity** | kW | 22.6 | 28.9 | 35.8 | 40.8 | 46.9 | 54.4 | |
| Connection | ||||||||
| Method | / | Flare | Flare | Flare | Welding | Welding | Welding | |
| Liquid pipe diameter | ¢mm | 9.52×2 | 12.7×2 | 12.7×2 | 15.88×1 | 15.88/12.7 | 15.88/12.7 | |
| Gas pipe diameter | ¢mm | 15.88×2 | 19.05×2 | 19.05×2 | 28×1 | 28/19.05 | 28/19.05 | |
| Power supply | / | 230V/3N/60Hz | ||||||
| OUTDOOR UNIT | Compressor | |||||||
| Qty/refrigerant circuit | Nr. | 2/2 | 2/2 | 2/2 | 1/1 | 2/2 | 2/2 | |
| Cooling power input* | kW | 7.2 | 9.3 | 11.8 | 12.8 | 15.1 | 17.9 | |
| Heating power input** | kW | 7.13 | 9.21 | 11.68 | 12.67 | 14.95 | 17.72 | |
| Energy adjustment | % | 50-100 | 50-100 | 50-100 | 0-100 | 40-60-100 | 33-66-100 | |
| Axial fans | ||||||||
| Quantity | Nr. | 1 | 1 | 1 | 1 | 2 | 2 | |
| Airflow | m3/h | 9400 | 9400 | 12500 | 14200 | 18800 | 18800 | |
| Sound pressure level*** | dB(A) | 67 | 67 | 68 | 70 | 71 | 71 | |
| Net weight | kg | 170 | 180 | 220 | 280 | 260 | 280 | |
| INDOOR UNIT | Centrifugal fans | |||||||
| Quantity | Nr. | 2 | 2 | 2 | 2 | 2 | 2 | |
| Airflow | m3/h | 3500 | 4500 | 5650 | 6450 | 7400 | 8550 | |
| ESP | Pa | 120 | 100 | 150 | 130 | 180 | 200 | |
| Sound pressure level*** | dB(A) | 64 | 64 | 66 | 66 | 68 | 68 | |
| Net weight | kg | 90 | 100 | 150 | 160 | 180 | 200 | |
| Additional electric heater**** | kW | 2×3 | 2×4 | 2×5 | 2×6 | 2×6 | 2×8 | |
| Additional heating coil**** | kW | 22.2 | 28.4 | 35.1 | 40.0 | 46.0 | 53.3 | |
| Mod | 52 | 62 | 72 | 88 | 104 | ||
| Nominal cooling capacity* | kW | 51.3 | 63.3 | 71.3 | 87.9 | 103.7 | |
| Nominal heating capacity** | kW | 58.9 | 72.6 | 81.9 | 100.0 | 115.8 | |
| Connection | |||||||
| Method | / | Welding | Welding | Welding | Welding | Welding | |
| Liquid pipe diameter | ¢mm | 15.88/12.7 | 15.88×2 | 15.88×2 | 15.88×2 | 19.05×2 | |
| Gas pipe diameter | ¢mm | 28/19.05 | 28×2 | 28×2 | 28×2 | 35×2 | |
| Power supply | / | 230V/3N/60Hz | |||||
| OUTDOOR UNIT | Compressor | ||||||
| Qty/refrigerant circuit | Nr. | 2/2 | 2/2 | 2/2 | 2/2 | 2/2 | |
| Cooling power input* | kW | 18.4 | 23.1 | 26.6 | 28.1 | 39.3 | |
| Heating power input** | kW | 18.22 | 22.87 | 26.33 | 27.82 | 38.91 | |
| Energy adjustment | % | 30-70-100 | 50-100 | 50-100 | 50-100 | 50-100 | |
| Axial fans | |||||||
| Quantity | Nr. | 2 | 2 | 2 | 2 | 2 | |
| Airflow | m3/h | 21500 | 26500 | 29880 | 36500 | 43500 | |
| Sound pressure level*** | dB(A) | 71 | 71 | 71 | 71 | 71 | |
| Net weight | kg | 330 | 460 | 460 | 780 | 800 | |
| INDOOR UNIT | Centrifugal fans | ||||||
| Quantity | Nr. | 2 | 2 | 2 | 2 | 2 | |
| Airflow | m3/h | 9250 | 11450 | 12900 | 14800 | 17100 | |
| ESP | Pa | 200 | 300 | 300 | 280 | 500 | |
| Sound pressure level*** | dB(A) | 68 | 68 | 69 | 69 | 70 | |
| Net weight | kg | 220 | 230 | 300 | 320 | 400 | |
| Additional electric heater**** | kW | 2×8 | 2×10 | 2×10 | 2×12 | 2×14 | |
| Additional heating coil**** | kW | 57.8 | 71.2 | 80.3 | 98.0 | 113.5 | |
Performance values refer to the following conditions:
* Cooling capacity is measured under the condition: indoor temperature DB 27°C/ WB 19°C, ambient temperature DB 35°C / WB 24°C.
** Heating capacity is measured under the condition: indoor temperature DB 20°C / WB 15°C, ambient temperature DB 7ºC / WB 6°C.
*** Sound pressure measured at a distance of 1 m and a height of 1.5 m above the ground in a dear field.
**** Optional as request.
Unit Pictures
Some Overseas Simple Projects
Our Products Range
Contact Information
Anne
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HangZhou CHINAMFG AIR CONDITIONING CO.,LTD
Website: HangZhouamrtaac HangZhouamrtaac
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| Warranty: | 18monthes After Delivery |
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| Type: | Chiller |
| Air Tube Material: | Galvanized Sheet |
| Customization: |
Available
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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How Do Scroll Compressors Handle Variable Demand Loads?
Scroll compressors are well-suited for handling variable demand loads in HVAC (Heating, Ventilation, and Air Conditioning) systems. Their design and operational characteristics allow them to efficiently adapt to changing cooling requirements. Here’s a detailed explanation of how scroll compressors handle variable demand loads:
1. Capacity Modulation:
One of the key features that enable scroll compressors to handle variable demand loads is their capacity modulation capability. Scroll compressors can adjust their output capacity to match the cooling load requirements of the system. They can modulate their capacity by varying parameters such as motor speed, refrigerant flow, or internal compression volume. This modulation allows the compressor to operate at different levels of output to meet the varying cooling demands efficiently.
2. Stepless Capacity Control:
Scroll compressors offer stepless capacity control, allowing them to operate at any capacity between their minimum and maximum limits. Unlike compressors with fixed capacity stages, scroll compressors can precisely match the cooling demand at any given moment. This stepless capacity control helps ensure optimal energy efficiency and prevents overshooting or undershooting the required cooling capacity.
3. Smooth Operation:
Scroll compressors operate with smooth and continuous compression, resulting in stable and consistent cooling performance. The absence of reciprocating motion, as found in other compressor types, eliminates the pulsations and vibrations associated with start-stop operation. The scroll design provides a continuous compression process, minimizing energy fluctuations and delivering steady cooling output even during variable demand conditions.
4. Load Matching:
Scroll compressors dynamically match the cooling load requirements by adjusting their output capacity. When the demand load decreases, the compressor reduces its output capacity to avoid overcooling. This load matching capability prevents energy wastage by ensuring the compressor operates at an optimal level. As the demand load increases, the compressor responds by increasing its output capacity to meet the increased cooling requirements effectively.
5. Energy Efficiency:
Scroll compressors are known for their high energy efficiency, even under variable demand conditions. Their capacity modulation and load matching capabilities enable them to operate at higher efficiencies across a wide range of cooling loads. By adjusting the output capacity to closely match the demand, scroll compressors minimize energy losses associated with excessive cycling, inefficient operation at partial loads, or running at full capacity when not required.
6. Electronic Controls:
Scroll compressors often incorporate electronic controls or advanced control systems that optimize their performance under variable demand loads. These control systems continuously monitor the cooling demand and adjust the compressor’s output accordingly. They can also take into account factors such as ambient temperature, humidity, and system characteristics to further optimize the compressor’s operation and energy efficiency.
Overall, scroll compressors handle variable demand loads through their capacity modulation, stepless capacity control, smooth operation, load matching capabilities, energy efficiency, and electronic control systems. Their ability to adapt to changing cooling requirements efficiently makes them an ideal choice for HVAC systems that experience fluctuating demand conditions.
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Are There Oil-Free Scroll Compressors Available?
Yes, oil-free scroll compressors are available in the market. Here’s a detailed explanation:
1. Oil-Free Design:
Oil-free scroll compressors, also known as dry scroll compressors, are specifically designed to operate without the need for lubricating oil. Unlike lubricated scroll compressors that rely on oil for lubrication and sealing, oil-free scroll compressors utilize alternative methods to achieve smooth and reliable operation.
2. Specialized Coatings:
One common approach in oil-free scroll compressors is the use of specialized coatings on the scroll elements. These coatings, typically made of durable materials such as Teflon or other polymers, provide a low-friction surface that reduces wear and eliminates the need for oil-based lubrication. The specialized coatings also contribute to sealing and maintaining the efficiency of the compression process.
3. Tight Tolerances:
Oil-free scroll compressors are manufactured with tight tolerances to ensure proper mating between the scroll elements. The precise design and manufacturing processes aim to minimize internal leakage and optimize performance without the need for oil-based lubrication. The tight tolerances also contribute to achieving higher efficiency and reliability.
4. Increased Cooling:
Oil-free scroll compressors often incorporate enhanced cooling mechanisms to manage heat generated during compression. They may feature improved heat dissipation through advanced materials, enhanced airflow, or additional cooling technologies. Efficient cooling helps to maintain the compressor’s temperature within acceptable limits and ensures reliable operation.
5. Reduced Maintenance:
Oil-free scroll compressors generally require less maintenance compared to lubricated compressors. Without the need for oil changes, filter replacements, or oil level checks, the maintenance requirements are simplified. Additionally, the absence of oil eliminates the risk of oil leaks or contamination, reducing the potential for system downtime and environmental concerns.
6. Application Range:
Oil-free scroll compressors are suitable for various applications where oil-free operation is required or preferred. They are commonly used in industries such as electronics, semiconductor manufacturing, medical and dental equipment, laboratories, food and beverage, and pharmaceuticals. These applications often demand clean air or gas without the risk of oil contamination.
7. Considerations:
While oil-free scroll compressors offer advantages in certain applications, it’s important to consider some factors. Oil-free compressors may have slightly lower efficiency compared to lubricated compressors. Additionally, the specialized coatings on the scroll elements may require periodic inspection and maintenance to ensure their effectiveness over the compressor’s lifespan.
When considering the use of oil-free scroll compressors, it’s recommended to consult with compressor manufacturers or HVAC professionals to evaluate the specific requirements of the application and ensure compatibility with the intended system design and performance goals.
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Can Scroll Compressors Be Used in HVAC Systems?
Yes, scroll compressors are commonly used in HVAC (heating, ventilation, and air conditioning) systems. Here’s a detailed explanation:
Scroll compressors offer several advantages that make them well-suited for HVAC applications:
1. High Efficiency: Scroll compressors are known for their high efficiency. The continuous compression process with minimal clearance volume reduces energy losses and improves overall efficiency compared to other compressor types. This can result in energy savings and lower operating costs for HVAC systems.
2. Quiet Operation: Scroll compressors operate with lower noise levels compared to some other compressor types. The interlocking spiral motion of the scrolls creates a smooth compression process with minimal pulsations, reducing vibration and noise generation. This is particularly beneficial for HVAC systems in noise-sensitive environments or residential settings where quiet operation is desired.
3. Compact Design: Scroll compressors have a relatively compact design, making them suitable for HVAC systems where space is limited. The absence of reciprocating parts and the compact arrangement of the scrolls contribute to the compactness of these compressors. This allows for easier installation in air conditioning units, heat pumps, and other HVAC equipment with space constraints.
4. Enhanced Reliability: Scroll compressors offer enhanced reliability due to their simple design and fewer moving parts compared to other compressor types. The absence of valves, piston rings, and other wearing components reduces the chances of failure or breakdown. This can result in improved system uptime and reduced downtime for maintenance or repairs in HVAC systems.
5. Variable Speed Operation: Many scroll compressors are available with variable speed drive (VSD) technology. This allows the compressor to adjust its speed and capacity based on the cooling or heating load requirements of the HVAC system. Variable speed scroll compressors offer better energy efficiency by matching the compressor’s output to the system’s demand, resulting in optimized performance and reduced energy consumption.
6. Wide Range of Capacities: Scroll compressors are available in a wide range of capacities to meet the varying needs of HVAC systems. Whether it’s a small residential air conditioning unit or a large commercial HVAC system, there are scroll compressors available in different sizes and configurations to accommodate the specific cooling or heating requirements.
Due to these advantages, scroll compressors are commonly used in various HVAC applications, including:
– Air conditioning systems for residential, commercial, and industrial buildings
– Heat pumps for heating and cooling applications
– Chiller systems for large-scale cooling in commercial and industrial settings
– Rooftop units for packaged HVAC systems on the roofs of buildings
– Refrigeration units for cooling and preserving perishable goods
– Process cooling and air handling units in industrial applications
In summary, scroll compressors are widely used in HVAC systems due to their high efficiency, quiet operation, compact design, enhanced reliability, variable speed capabilities, and wide range of capacities. These advantages make them a popular choice for various HVAC applications, providing efficient and reliable cooling and heating solutions.
editor by CX 2024-03-28