An ultra-low temperature air source heat pump unit is a central air-conditioning device that uses air as the cold (heat) source and water as the medium for transferring cooling (heating) capacity. This unit can supply cooling or heating to terminal equipment and, when combined with fan coil units, air handling units, etc., forms a centralized air-conditioning system capable of providing cooling in summer and heating in winter.
Working Principle of Ultra-Low Temperature Air Source Heat Pump
The working principle of the ultra-low temperature air source heat pump is based on the reverse Carnot cycle. Driven by a small amount of electricity, the heat pump unit operates to absorb a large amount of low-grade thermal energy from the air. This energy is then transferred via a heat exchanger to water, producing high-temperature hot water at 40–50°C or above. Through the action of a water pump, the hot water is circulated within indoor terminals such as underfloor heating systems, fan coil units, or radiators. There, it releases heat into the indoor space, thereby raising the indoor temperature to achieve heating purposes. Air source heat pumps demonstrate significant energy-saving effects and can achieve a high coefficient of performance even during cold winters, making them a new, energy-efficient, and environmentally friendly heating solution.
Meanwhile, air-source heat pumps are also capable of cooling. During hot summers, the unit utilizes refrigerant to absorb heat, thereby lowering the indoor temperature. By employing a “water circulation” system for cooling, the air delivered is softer and more akin to a natural breeze. Additionally, the cooled air retains higher moisture content, preventing the dry, thirsty feeling even after prolonged exposure indoors, resulting in a more comfortable cooling experience.
Advantages of Ultra-Low Temperature Air Source Heat Pumps
1. Innovative Optimized Design
The unit features an optimized V-shaped fin heat exchanger with an increased air intake area and enhanced effective heat exchange surface. This design ensures uniform airflow, improves heat exchanger efficiency, and reduces frost formation.
2. High-Efficiency Heat Exchange Technology
The air-side fin heat exchanger utilizes advanced inner-grooved copper tubes and corrugated hydrophilic aluminum fins, significantly boosting heat transfer performance.
The helical baffle heat exchanger offers low water resistance and high heat exchange efficiency, reducing pump head requirements while enhancing overall thermal performance.
3. Easy Installation
With its compact, aesthetically pleasing design, lightweight structure, and small footprint, the unit can be flexibly installed in outdoor locations such as rooftops or balconies. It requires no cooling towers, cooling water pumps, or associated piping, simplifying installation and saving space.
4. Multi-Protection Safety Mechanisms
The system is equipped with high/low pressure switches, flow switches, freeze protection switches, overload protection devices, and phase sequence protectors to ensure safe and reliable operation.
5. Intelligent Defrosting Technology
The unit intelligently determines defrosting timing based on heating operation parameters. It initiates defrosting only when necessary and automatically verifies completion, preventing repeated defrost cycles. This ensures optimal heating capacity and maximum efficiency, delivering reliable and energy-saving performance during winter.
6. Smart Control Capabilities
Featuring advanced microprocessor control technology, the unit supports both remote wire control and panel operation with a user-friendly interface. It also offers networking functionality, enabling users to monitor operational status and adjust parameters remotely via mobile devices.
7. Modular Design Flexibility
Designed with a modular approach, the unit is ready for operation after simple water and electrical connections. Multiple units (up to 16) can be combined in parallel, allowing flexible capacity expansion and strong compatibility. Various combination configurations are available to meet diverse site requirements.
8. Stable and Reliable Performance
Built with mature technology and robust craftsmanship, the unit ensures long-lasting and stable operation. Key components from internationally renowned brands are used to guarantee quality. Strict quality inspections and comprehensive online testing standards further enhance reliability and durability.
9. Premium Component Selection
Internationally certified compressors provide quiet, stable, and efficient performance.
Electronic expansion valves enable precise and rapid refrigerant flow regulation, coordinated with microprocessor control and multiple sensors for accurate operation and multi-layer safety protection.
Scope of Application:
This equipment is widely suitable for civil buildings, shopping malls, supermarkets, hotels, restaurants, office buildings, and industrial structures. It is particularly ideal for locations with stringent requirements for operational noise and environmental impact, water-scarce areas, or sites where installing cooling towers is impractical.