Air-cooled heat pump modular unit

The Midea LSQWRF series modular air - cooled heat pump units provide chilled water or hot water for centralized air - handling equipment or terminal devices in central air - conditioning projects. The units are completely independent integral units, designed for outdoor installation (on rooftops or the ground). Each unit consists of key components such as high - efficiency and low - noise scroll compressors, air - cooled condensers, shell - and - tube (or plate - type, double - pipe type, etc.) 

The units are equipped with a full - Chinese microcomputer control system that can automatically control energy according to the load size for optimal matching, truly achieving the best energy - saving operation. These are modular units, allowing users to combine them autonomously according to their needs. They can be widely applied to the air - conditioning projects of newly - built and renovated industrial and civil buildings of various sizes, such as hotels, guesthouses, apartments, office buildings, hospitals, and industrial workshops. Especially in places with high requirements for noise and the surrounding environment, as well as water - shortage areas, air - cooled heat pump modular units are the best choice.

The Midea W series air - cooled heat pump modular units adopt a modular design. The reference modules include 65kW and 130kW, and up to 16 modular units can be paralleled to form combined products in the range of 65kW - 2080kW. The W - type modular units, as a new - generation product, have outstanding advantages in terms of performance, structure, and self - control.

Exquisite Design

- Air - side Heat Exchanger: Adopts a circular return - air heat exchanger design to make the air - flow distribution more uniform.

- Fan and Motor: Uses large - air - volume and low - noise fans, as well as high - torque and high - efficiency motors, ensuring high efficiency and low noise.

- Electrical Control Box: The electrical control box is equipped with high - quality components and is set on the front for easy installation and maintenance.

- Water - side Heat Exchanger: The new - type threaded baffle - plate evaporator improves efficiency by approximately 10%.

- Compressor: High - quality compressors with large capacity, high efficiency, and long - lasting durability.

- Liquid Receiver: A large - volume low - pressure liquid receiver is used to ensure more reliable system operation.

High - Efficiency and Energy - Saving

The Midea W - type modular units integrate components such as internationally renowned brand compressors, a new - generation high - efficiency heat - exchange system, and high - precision electronic expansion valves. As a result, the COP of the entire series of units reaches the national second - level energy - efficiency standard, and the product has obtained national energy - saving product certification.

- Full - enclosed Scroll Compressor Technology with Stronger Power

- High Efficiency: The "contact - free wear" scroll design reduces internal friction of the compressor, improving efficiency.

- Stable Performance: A check - valve is configured at the compressor outlet to prevent refrigerant back - flow, ensuring high reliability.

- Low Maintenance Cost: Environment - friendly lead - free polymer bearings are used, ensuring stable operation and helping to reduce warranty costs.

- No Maintenance Required: The full - enclosed design eliminates the need for maintenance.

- Low Noise: A sound - proof cover is installed at the bottom of the compressor, reducing the noise level by 10%.

- Long Life: The suction - cooled motor is used, enabling the compressor to have higher efficiency and a longer lifespan.

- High - efficiency Heat Exchanger with a Substantial Increase in Heat - exchange Efficiency

Based on professional temperature - field simulation calculations, the heat exchanger innovatively designs circular return - air, increasing the air - intake area and the effective heat - exchange area. The heat - exchange effect is remarkable, and the bottom of the unit is less likely to frost in winter.

The use of advanced trapezoidal internal - threaded tubes and hydrophilic aluminum foils improves the heat - exchange efficiency by 30%. On the basis of ensuring reliable and stable operation, the operating efficiency is enhanced.

- High - efficiency Water - side Heat Exchanger

The spiral baffle - plate shell - and - tube heat exchanger is used to increase the heat - transfer coefficient and strengthen heat exchange. The spiral baffle - plate shell - and - tube heat exchanger is 10% more efficient than the ordinary shell - and - tube heat exchanger.

- High - efficiency and Low - noise Fan Blades

Through CFD optimization design, the heat - exchange effect on the air side is improved, enabling more air to exchange heat with the heat exchanger per unit time and ensuring the condensing temperature. The optimized impeller matches the optimal operating speed of the motor, resulting in lower air - flow noise and a softer sound quality.

An energy - saving motor is used. Through the optimized design of the motor coil, losses are effectively reduced, and the operating efficiency is improved. The motor generates less heat, consumes less power, and has a long operating life.

- High - precision Electronic Expansion Valve for Precise Temperature Control

An electronic expansion valve is selected as the fine - control component for the refrigerant. It only takes a few seconds for the electronic expansion valve to open from a fully - closed state to a fully - open state. It has a fast response and action speed, no static superheat phenomenon, can achieve light - load startup, reduce heat loss during shutdown, improve the stability and reliability of the unit, and reduce the unit's operating costs.

The liquid - phase distribution component can maximize performance and minimize the impact of defrosting. A 500 - level ECV combined with a capillary tube can stably and accurately control the gas flow rate, with a fast response speed.

- Advanced Energy - regulation Control Technology for Energy Output on - demand

Advanced energy - regulation control technology is used to control the number of modules in the control system and the number of compressors in the unit modules that are turned on, thus outputting energy according to actual needs.

- Intelligent Defrosting Technology to Reduce Heating Attenuation

Air - cooled units are prone to frosting in low - temperature and high - humidity environments. The Midea H - type modular units can accurately judge the defrosting timing according to the main parameters and load changes during heating operation, defrost when there is frost, and continue normal heating when there is no frost. In addition, forced manual defrosting can be carried out according to the actual situation.

Green and Environment - friendly

The new - type environment - friendly refrigerant R410A is used, which has a higher refrigeration efficiency. In addition, the R410A environment - friendly refrigerant does not contain chlorine elements that damage the ozone layer, with an ozone - depletion potential (ODP) of 0, and effectively reduces CO2 emissions.

Stable and Reliable

- Hot - gas Bypass Patent Technology for Superior Heating Performance

The patented hot - gas bypass technology is used to better improve the safety and stability of the unit during the heating operation and expand the operating range of the heating condition.

- Modular Rotation Operation Technology

According to the system load, the unit rotates the setting of the module unit that is preferentially turned on, evenly distributing the operating time of each module unit, greatly improving the reliability and service life of the unit.

- Modular Backup Operation Technology

The unit's unique backup operation technology adopts a single - module multi - system design, making different modules in the same system backup each other. In case of an emergency, even if one or more compressors or module units fail, the system can continue to operate.

- Multiple Protection Functions to Ensure System Operation Safety

The modular structure is adopted, and the unit starts in stages.