Roof-mounted air-cooled heat pump air conditioning units are large and medium-sized integrated air conditioning equipment with their own cold source and air cooling. Our equipment manufacturer introduces their core functions, technical features, application scenarios and key points for selection as follows:
I. Core Functions and Types
Function integration
It integrates functions such as refrigeration, heating, humidification, air supply, air purification and electrical control. By combining a compressed air-cooled condenser with a refrigerant expansion direct evaporator, it does not require a cooling water system, eliminating the need for cooling towers, water pumps and pipelines, and is easy to install.
Main types
Single-cooling type: Only provides refrigeration function.
Electric heating type: Heating is achieved through electric auxiliary heating.
Constant temperature and humidity type: Precisely controls temperature and humidity, suitable for places with high environmental requirements.
Heat pump type: It switches between cooling and heating modes through a four-way directional control valve, serving two purposes with one machine and featuring a high energy efficiency ratio.
All-fresh air type: It can introduce 100% outdoor fresh air to meet the requirements of cleanliness or ventilation.
Ii. Technical Features and Advantages
Structure and Installation
Modular design: Supports both integral and split structures, is lightweight and aesthetically pleasing, and can adapt to different installation Spaces.
Outdoor rainproof: With anti-corrosion, anti-rust and rainproof design, it can be directly installed outdoors on the roof or in the courtyard, saving space in the machine room.
Multiple protections: Equipped with high/low voltage protection, power delayed start, overload/short circuit protection, motor overheat protection, etc., ensuring safe and reliable operation.
Energy Efficiency and Energy Conservation
High-efficiency heat transfer: The evaporator and condenser adopt enhanced heat transfer technology, with an energy efficiency ratio (EER) of over 3.2, and some models can reach 4.3.
Intelligent control: Microcomputer automatic control, supporting self-diagnosis and alarm of faults, and configurable 485 communication interface for remote monitoring.
Energy-saving design: Technologies such as parallel operation of dual compressors, start-stop control of multiple fans, and speed regulation of small cooling capacity fans have increased the efficiency at partial loads by 15% to 30%.
Operational comfort
Low-noise design: Compressor room isolation, sound-absorbing cotton, low-noise fan and spring vibration isolators reduce indoor and outdoor noise.
Constant temperature and humidity: Water is used as the heat transfer medium, ensuring stable surface cooling temperature of the coil, uniform air dehumidification, and a strong sense of comfort for the human body.
Iii. Application Scenarios
Commercial buildings: supermarkets, hotels, hospitals, office buildings and other places that require independent temperature control.
In the industrial sector: factories in industries such as electronics, textiles, mechanical manufacturing, metallurgy and chemical engineering, which have strict requirements for environmental temperature and humidity.
Special places: mobile cabin hospitals, nucleic acid testing laboratories, clean workshops and other environments that require constant temperature and humidity or fresh air.
Public facilities: Large public Spaces such as stations, gymnasiums, and entertainment centers.
Iv. Selection and Price Reference
Key points for selection
Functional requirements: Select the corresponding type based on whether functions such as heating, humidification, and fresh air are needed.
Energy efficiency grade: Prioritize models with a higher EER value for lower long-term operating costs.
Installation conditions: Confirm the roof load-bearing capacity, space and power configuration, and select split or integral units.
Brand and after-sales service: Choose a brand with a complete after-sales service system to ensure convenient maintenance in the later stage.
Price range
Economic type: Single cooling type or basic heat pump type, with a price of approximately 1,000 to 5,000 yuan per unit, suitable for small places.
Mid-to-high-end type: constant temperature and humidity or fresh air type, priced at approximately 10,000 to 30,000 yuan per unit, meeting commercial or industrial demands.
High-end customized type: Explosion-proof, low-temperature or large-scale units, with prices up to over 100,000 yuan, suitable for special environments.
V. Typical Cases
Food workshop application: Combined purification air conditioning roof heat pump unit, meeting the requirements of cleanliness, temperature and humidity.
Mobile cabin hospital: Direct expansion heat pump air conditioners, quickly deployed and supporting fresh air operation, ensuring air safety.
Industrial plant: Low-temperature air source heat pump module unit, suitable for -25℃ low-temperature environment, stable heating.
