Product Description
Company Profile
SENDO is a professional manufacturer of quality air conditioning products.
Sendo could supply most products in CHINAMFG field, such as Rooftop Packaged Unit, Split Commercial Unit, Air Cooled Water Chiller, Water Cooled Water Chiller, Chilled Water Air Handling Unit and Fan Coil Unit etc. CHINAMFG also supplies made-to-measure CHINAMFG solutions. We engineer and manufacture Air Conditioner to suit the building design and application.
Rooftop Packaged Unit
Features
1. Convenient for unit selection
– Colour selection
The color can be ordered (OEM) in either white or grey.
– Wide cooling capacity range
There is a large production line of packaged units, with capacities ranging from 3Ton to 110Ton (12kW to 392kW) at nominal conditions.
– Panels selection
Panels can be constructed of galvanized steel coated (Standard) or Panels are double-skin with injection of high density polyurethane.
– Optional accessories
• Inverter Scroll compressors
• EC Plug-Fans
• Tropical climate T3 condition
• Economizer/Free cooling with return air, fresh air dampers and fresh air hood
• Heat recovery (Plate type heat recovery & Wheel type heat recovery optional)
• Additional water heating coil or electric heater for heating or dehumidification
• Optional supply / return air configuration (Side/Top/Bottom)
• Optional high level filter (G4 panel type filter, F8 bag type filer and H13 HEPA filter etc)
• Optional CHINAMFG condenser & evaporator for some area need special anti-corrosion
• Optional precision temperature & humidity control
• 100% Full fresh air
• High external pressure, long air supply distance
2. Outstanding reliability
– Economy
Some models feature the flexibility and economy of 2~4 stages operation. Compressors are progressively switched on only as they are needed. This has the added advantage of lowering start-up current.
– Durable construction
• Standard cabinets are constructed from high grade galvanized steel with polyester powder coated, they are completely weatherized for outdoor installation.
• Coils are manufactured from seamless copper tubes mechanically expanded into hydrophilic aluminum fins, they are tested under 450 CHINAMFG at the factory to avoid leakage. They also undergo dry chemical cleaning after manufacturing for optimum system cleanness.
• External fasteners are stainless steel or galvanized type. Corrosion resistant drain trays are also included.
• All units are tested at the factory to make sure no leakage and provide reliable start up.
– Reliable scroll compressor
High efficiency scroll compressor for the whole range, with built-in thermal overload cut-out and crankcase heater. Famous brand compressor: Copeland, CHINAMFG and Danfoss. More reliable.
– Multi-protection design
• Electric panel consists of breakers and contactors for compressors, condenser & evaporator fan motors, phase sequence relay and other necessary protection devices for the main components.
• Main power supply breaker is optional.
• All electric parts are Schneider Electric brand.
3. Quieter operation
• Compressors and low noise Supply fan are mounted on rubber vibration dampers.
• Wave type acoustic Insulation for compressor section, thermal insulation for coil and fan section.
4. Easy installation & maintenance
• All units are factory assembled, internally wired, fully charged refrigerant.
• The Rooftops has provisions for forklift and crane lifting. On arrival to the job site they are ready to be lifted to their operating position through the lifting supports available on the units. Only connect the wires of power supply, and no need to connect any signal wires.
• Quick release fasteners or removable the access doors on the compressor, fan motor, filter, and electric box sections, provide convenient access to system components for maintenance and service.
• The unit provides external pressure gauge for convenient and fast checking system pressure without removing the panel.
• If the unit is in running with abnormal operation, the controller will show the error code for easy troubleshooting.
• Standard washable filter, easy to clean.
5. Control system
• The unit is completely factory-wired with necessary controls and terminal block for power wiring.
• Syslab wired controller is supplied with unit controls as standard. The precision control makes all heating, cooling, or ventilating decisions in response to electronic signals from sensors measuring indoor and outdoor temperatures.
• Besides standard Syslab wired controller, CHINAMFG & CHINAMFG PLC controller with BMS function and precision temperature & humidity control can be matched as optional solution.
Specifications (BD Series)
| Model | SRT-ST1H12A | SRT-ST1H15A | SRT-ST1H20A | SRT-ST1H25A | SRT-ST1H30A | SRT-ST1H35A | ||
| Cooling | Capacity | Ton | 3.4 | 4.3 | 5.0 | 6.9 | 8.7 | 10.2 |
| kW | 12.0 | 15.2 | 17.5 | 24.0 | 30.3 | 35.6 | ||
| Power Input | kW | 4.1 | 5.3 | 5.5 | 8.8 | 11.3 | 12.3 | |
| Running Current | A | 7.4 | 9.7 | 10.2 | 16.1 | 21.2 | 23.3 | |
| Heating | Capacity | kW | 13.2 | 16.6 | 18.4 | 26.5 | 33.3 | 37.7 |
| Power Input | kW | 3.8 | 4.8 | 5.1 | 8.2 | 10.4 | 11.3 | |
| Running Current | A | 6.9 | 9.2 | 9.7 | 15.1 | 20.1 | 22.2 | |
| Power Supply | 380~415V/3Ph/50Hz | |||||||
| Refrigerant & Charging Quantity | Type | R410a | ||||||
| Kg | 3.1 | 3.1 | 4.3 | 2×3.1 | 2×3.1 | 2×4.3 | ||
| Compressor | Type | / | Scroll | |||||
| Brand | / | Copeland | Copeland | Copeland | Copeland | Copeland | Copeland | |
| Compressor/Circuit | Nos. | 1 | 1 | 1 | 2 | 2 | 2 | |
| Energy Adjustment | % | 0,100% | 0,50%,100% | |||||
| Condenser Section |
Condenser | Type | Copper Pipe + Anticorrosion Aluminium Fin | |||||
| Condenser Fan | Type | Axial / Direct | ||||||
| Qty | 1 | 1 | 1 | 1 | 1 | 1 | ||
| Power Input | kW | 0.25 | 0.37 | 0.37 | 0.55 | 0.75 | 0.75 | |
| Airflow | m3/h | 4600 | 7800 | 7800 | 9000 | 12600 | 12600 | |
| Evaporator Section |
Evaporator | Type | Copper Pipe + Anticorrosion Aluminium Fin | |||||
| Evaporator Fan | Type | Direct | Direct | Direct | Belt-Driven | |||
| Power Input | kW | 0.32 | 0.37 | 0.45 | 1.1 | 1.5 | 2.2 | |
| Supply Airflow | m3/h | 2100 | 2600 | 3400 | 4100 | 5200 | 6300 | |
| CFM | 1235 | 1529 | 2000 | 2412 | 3059 | 3706 | ||
| ESP | Pa | 100 | 100 | 100 | 200 | 200 | 250 | |
| Filter | Standard | Type | G4 Panel Type Filter | |||||
| Sound Level | dB(A) | 67 | 67 | 68 | 71 | 72 | 72 | |
| Dimension | Length | mm | 1498 | 1498 | 1498 | 1978 | 1978 | 1978 |
| Width | mm | 1100 | 1100 | 1100 | 1175 | 1175 | 1175 | |
| Height | mm | 1095 | 1095 | 1095 | 1095 | 1095 | 1095 | |
| Net Weight | Kg | 245 | 260 | 290 | 420 | 485 | 500 | |
*** *** *** *** *** *** *** *** ***
| Model | SRT-ST1H45A | SRT-ST1H50A | SRT-ST1H60A | SRT-ST1H70A | SRT-ST1H90A | SRT-ST1H100A | ||
| Cooling | Capacity | Ton | 12.7 | 14.3 | 17.1 | 20.0 | 25.7 | 30.0 |
| kW | 44.5 | 50.0 | 60.0 | 70.0 | 90.0 | 105.0 | ||
| Power Input | kW | 17.0 | 19.5 | 22.8 | 26.7 | 32.9 | 39.7 | |
| Running Current | A | 31.7 | 35.6 | 39.9 | 48.3 | 61.0 | 70.6 | |
| Heating | Capacity | kW | 48.7 | 54.3 | 64.0 | 75.4 | 96.2 | 113.2 |
| Power Input | kW | 15.6 | 18.0 | 21.0 | 24.8 | 30.4 | 36.7 | |
| Running Current | A | 29.9 | 33.5 | 37.5 | 45.4 | 57.3 | 66.3 | |
| Power Supply | 380~415V/3Ph/50Hz | |||||||
| Refrigerant & Charging Quantity | Type | R410a | ||||||
| Kg | 4.3+8.5 | 4.3+8.5 | 2×7.5 | 2×8.5 | 3×7.5 | 3×8.5 | ||
| Compressor | Type | / | Scroll | |||||
| Brand | / | Copeland | Copeland | Copeland | Copeland | Copeland | Copeland | |
| Compressor/Circuit | Nos. | 2/2 | 2/2 | 2/2 | 2/2 | 3/3 | 3/3 | |
| Energy Adjustment | % | 0,50%,100% | 0,33%,66%,100% | |||||
| Condenser Section |
Condenser | Type | Copper Pipe + Anticorrosion Aluminium Fin | |||||
| Condenser Fan | Type | Axial / Direct | ||||||
| Qty | 1 | 1 | 1 | 1 | 2 | 2 | ||
| Power Input | kW | 1.1 | 1.5 | 1.5 | 2.2 | 2×1.1 | 2×1.5 | |
| Airflow | m3/h | 16500 | 21000 | 21000 | 27000 | 2×16500 | 2×21000 | |
| Evaporator Section |
Evaporator | Type | Copper Pipe + Anticorrosion Aluminium Fin | |||||
| Evaporator Fan | Type | Belt-Driven | ||||||
| Power Input | kW | 3 | 3 | 4 | 4 | 5.5 | 5.5 | |
| Supply Airflow | m3/h | 7600 | 8500 | 10900 | 12500 | 16000 | 19500 | |
| CFM | 4471 | 5000 | 6412 | 7353 | 9412 | 11471 | ||
| ESP | Pa | 250 | 250 | 300 | 300 | 300 | 300 | |
| Filter | Standard | Type | G4 Panel Type Filter | |||||
| Sound Level | dB(A) | 73 | 73 | 73 | 74 | 74 | 75 | |
| Dimension | Length | mm | 2268 | 2268 | 2298 | 2298 | 2878 | 2878 |
| Width | mm | 1470 | 1470 | 1650 | 1650 | 2140 | 2140 | |
| Height | mm | 1167 | 1167 | 1400 | 1400 | 1964 | 1964 | |
| Net Weight | Kg | 750 | 770 | 830 | 860 | 1150 | 1350 | |
Workshop
Project Reference
Sendo contribution to combat rising energy costs and global warming is to design innovative, efficient and dependable AC products, while providing best comfort and air quality. We are optimistic about the response that we expect to get from our potential customers because we strive to ensure that our customers get the quality products when they approach us and we are determined to ensure that our customers can obtain various benefits when they buy CHINAMFG Air Conditioners.
Get in touch with us and book a Factory Tour! Sincerely welcome to visit our factory at your convenience.
| Type: | Rooftop Packaged Air Conditioner |
|---|---|
| Air Tube Material: | Galvanized Sheet |
| Corrosion Durability: | Higher |
| Operating Voltage: | 50Hz or 60Hz |
| Noise Level: | Low |
| Application Fields: | Residential & Commercial Field |
| Customization: |
Available
|
|
|---|
.webp)
How are air compressors utilized in the aerospace industry?
Air compressors play a crucial role in various applications within the aerospace industry. They are utilized for a wide range of tasks that require compressed air or gas. Here are some key uses of air compressors in the aerospace industry:
1. Aircraft Systems:
Air compressors are used in aircraft systems to provide compressed air for various functions. They supply compressed air for pneumatic systems, such as landing gear operation, braking systems, wing flap control, and flight control surfaces. Compressed air is also utilized for starting aircraft engines and for cabin pressurization and air conditioning systems.
2. Ground Support Equipment:
Air compressors are employed in ground support equipment used in the aerospace industry. They provide compressed air for tasks such as inflating aircraft tires, operating pneumatic tools for maintenance and repair, and powering air-driven systems for fueling, lubrication, and hydraulic operations.
3. Component Testing:
Air compressors are utilized in component testing within the aerospace industry. They supply compressed air for testing and calibrating various aircraft components, such as valves, actuators, pressure sensors, pneumatic switches, and control systems. Compressed air is used to simulate operating conditions and evaluate the performance and reliability of these components.
4. Airborne Systems:
In certain aircraft, air compressors are employed for specific airborne systems. For example, in military aircraft, air compressors are used for air-to-air refueling systems, where compressed air is utilized to transfer fuel between aircraft in mid-air. Compressed air is also employed in aircraft de-icing systems, where it is used to inflate inflatable de-icing boots on the wing surfaces to remove ice accumulation during flight.
5. Environmental Control Systems:
Air compressors play a critical role in the environmental control systems of aircraft. They supply compressed air for air conditioning, ventilation, and pressurization systems, ensuring a comfortable and controlled environment inside the aircraft cabin. Compressed air is used to cool and circulate air, maintain desired cabin pressure, and control humidity levels.
6. Engine Testing:
In the aerospace industry, air compressors are utilized for engine testing purposes. They provide compressed air for engine test cells, where aircraft engines are tested for performance, efficiency, and durability. Compressed air is used to simulate different operating conditions and loads on the engine, allowing engineers to assess its performance and make necessary adjustments or improvements.
7. Oxygen Systems:
In aircraft, air compressors are involved in the production of medical-grade oxygen for onboard oxygen systems. Compressed air is passed through molecular sieve beds or other oxygen concentrator systems to separate oxygen from other components of air. The generated oxygen is then supplied to the onboard oxygen systems, ensuring a sufficient and continuous supply of breathable oxygen for passengers and crew at high altitudes.
It is important to note that air compressors used in the aerospace industry must meet stringent quality and safety standards. They need to be reliable, efficient, and capable of operating under demanding conditions to ensure the safety and performance of aircraft systems.
.webp)
How are air compressors used in refrigeration and HVAC systems?
Air compressors play a vital role in refrigeration and HVAC (Heating, Ventilation, and Air Conditioning) systems, providing the necessary compression of refrigerant gases and facilitating the heat transfer process. Here are the key ways in which air compressors are used in refrigeration and HVAC systems:
1. Refrigerant Compression:
In refrigeration systems, air compressors are used to compress the refrigerant gas, raising its pressure and temperature. This compressed gas then moves through the system, where it undergoes phase changes and heat exchange to enable cooling or heating. The compressor is the heart of the refrigeration cycle, as it pressurizes and circulates the refrigerant.
2. Refrigeration Cycle:
The compression of refrigerant gas by the air compressor is an essential step in the refrigeration cycle. After compression, the high-pressure, high-temperature gas flows to the condenser, where it releases heat and condenses into a liquid. The liquid refrigerant then passes through an expansion valve or device, which reduces its pressure and temperature. This low-pressure, low-temperature refrigerant then enters the evaporator, absorbing heat from the surrounding environment and evaporating back into a gas. The cycle continues as the gas returns to the compressor for re-compression.
3. HVAC Cooling and Heating:
In HVAC systems, air compressors are used to facilitate cooling and heating processes. The compressor compresses the refrigerant gas, which allows it to absorb heat from the indoor environment in the cooling mode. The compressed gas releases heat in the outdoor condenser unit and then circulates back to the compressor to repeat the cycle. In the heating mode, the compressor reverses the refrigeration cycle, absorbing heat from the outdoor air or ground source and transferring it indoors.
4. Air Conditioning:
Air compressors are an integral part of air conditioning systems, which are a subset of HVAC systems. Compressed refrigerant gases are used to cool and dehumidify the air in residential, commercial, and industrial buildings. The compressor pressurizes the refrigerant, initiating the cooling cycle that removes heat from the indoor air and releases it outside.
5. Compressor Types:
Refrigeration and HVAC systems utilize different types of air compressors. Reciprocating compressors, rotary screw compressors, and scroll compressors are commonly used in these applications. The selection of the compressor type depends on factors such as system size, capacity requirements, efficiency, and application-specific considerations.
6. Energy Efficiency:
Efficient operation of air compressors is crucial for refrigeration and HVAC systems. Energy-efficient compressors help minimize power consumption and reduce operating costs. Additionally, proper compressor sizing and system design contribute to the overall energy efficiency of refrigeration and HVAC systems.
By effectively compressing refrigerant gases and facilitating the heat transfer process, air compressors enable the cooling and heating functions in refrigeration and HVAC systems, ensuring comfortable indoor environments and efficient temperature control.
.webp)
In which industries are air compressors widely used?
Air compressors find extensive usage across various industries due to their versatility and ability to generate compressed air. Here are some industries where air compressors are widely employed:
1. Manufacturing: Air compressors are essential in manufacturing processes for powering pneumatic tools and equipment. They are used for tasks such as operating assembly lines, powering robotic machinery, running paint sprayers, and driving pneumatic actuators.
2. Construction: Air compressors play a crucial role in the construction industry. They power pneumatic tools like jackhammers, nail guns, impact wrenches, and concrete breakers. Compressed air is also used for concrete spraying, sandblasting, and operating air-powered lifts and hoists.
3. Automotive: Air compressors are widely used in automotive manufacturing and repair. They power air tools used in auto body shops, tire inflation equipment, pneumatic lifts, and air-operated brake systems. Compressed air is also utilized in vehicle painting and drying processes.
4. Oil and Gas: The oil and gas industry extensively relies on air compressors for various applications. They are used for pneumatic drilling, powering pneumatic tools in refineries and petrochemical plants, operating pneumatic valves and actuators, and providing instrument air for control systems.
5. Food and Beverage: Air compressors are employed in the food and beverage industry for tasks such as packaging, bottling, and sealing. They power pneumatic conveying systems, control air pressure in food processing equipment, and provide clean compressed air for food handling and storage.
6. Pharmaceutical and Healthcare: Air compressors find application in pharmaceutical manufacturing and healthcare facilities. They are used for operating medical equipment, such as ventilators and dental tools. Compressed air is also utilized in pharmaceutical processes, including tablet coating, fluid bed drying, and aseptic packaging.
7. Aerospace: The aerospace industry relies on air compressors for various applications, including aircraft maintenance and assembly. They power pneumatic tools for aircraft repair, provide compressed air for cleaning and pressurizing systems, and support ground operations, such as tire inflation and aircraft de-icing.
8. Mining: Air compressors are extensively used in the mining industry. They power pneumatic tools for drilling, rock blasting, and excavation. Compressed air is also utilized for ventilation, conveying materials, and operating underground equipment.
9. Energy and Utilities: Air compressors play a vital role in the energy and utilities sector. They are used in power generation plants for pneumatic control systems, instrument air, and operating pneumatic valves. Compressed air is also employed for cleaning and maintenance purposes.
These are just a few examples of the industries where air compressors are widely utilized. The versatility and reliability of air compressors make them indispensable in numerous applications across diverse sectors.
editor by CX 2023-12-04