Energy-saving pioneer: The operating principle of wall-mounted air coolers that save 80% of electricity compared to central air conditioners

1. Energy efficiency comparison: air cooler vs central air conditioner

Actual power consumption data

Equipment type	Cooling capacity (kW)	Power (kW)	Energy efficiency ratio (EER)	10-hour power consumption
Central air conditioner	10	3.5	2.8	35 degrees
Wall-mounted air cooler	10	0.9	11.1	9 degrees

 

Conclusion: With the same cooling capacity, the power consumption of the air cooler is only 25% of that of the air conditioner (saving 75%)

2. Four core technologies for power saving of air coolers

Evaporative cooling principle (zero compressor)

Core advantages:

Cooling by absorbing heat through water evaporation (1kg of water absorbs 2450kJ of heat when evaporated)

No compressor/refrigerant required, power consumption reduced by 90%

Air conditioning defects:

Compressor power consumption accounts for more than 60% of the total system power consumption

Direct ventilation design (100% fresh air)

Workflow:

External hot air → wet curtain cooling → clean cold air directly sent to the room

Power saving points:

No return air system resistance

Eliminating fan coil energy consumption

Air conditioning defects:

Extra energy consumption required to process return air (accounting for about 30% of electricity)

Variable frequency water pump + EC motor

Energy-saving technology:

Water pump power is only 40-100W (vs air conditioning compressor 3000W+)

EC motor efficiency reaches 90% (traditional motor is only 60%)

Intelligent temperature control strategy

Energy-saving mode:

Automatically adjust wind speed according to humidity (the higher the humidity, the more significant the cooling effect)

Can be switched to intermittent operation at night

 

3. Precautions for installing wall-mounted air cooler

Preparation before installation

• Key points of on-site assessment

Confirmation of airflow direction: Select the appropriate model (upward/downward/sideward) according to the spatial structure

Power supply matching: Industrial models require 380V voltage (domestic 220V), and wiring is required in advance

Water source preparation: Check the water inlet pressure (0.1-0.3MPa) and drainage conditions

 

Core installation steps and specifications

• Installation location selection

Best location:

 

Industrial workshop: 8-10 meters/unit spacing, 2.5-3.5 meters in height

Home use: Avoid direct blowing at the head of the bed, diagonal installation is recommended

 

Prohibited location:

Direct sunlight (affects the life of the wet curtain)

Near the source of dust/oil (such as the kitchen exhaust port)

 

• Fixed bracket installation

Load-bearing standard: ≥2 times the weight of the equipment (industrial models usually require a 50kg-level bracket)

Tilt angle: 3°-5° outward (facilitates the discharge of condensed water)

Special requirements for different scenarios

• Industrial environment (textile/electroplating workshop)

Anti-corrosion installation: Use 304 stainless steel bracket The air duct is made of PP material

 

• High humidity places (underground parking lots)

Moisture-proof measures: The motor junction box is filled with waterproof glue and the water is manually drained once a week

 

• Animal husbandry (breeding greenhouses)

Dust-proof design: Install a primary filter at the air inlet and clean the wet curtain twice a week

 

4. Mandatory inspection items after installation

Operation test list:

Whether the fan direction is correct (three-phase electricity needs to adjust the phase sequence)

Whether the water pump supplies water normally (flow rate ≥5L/min)

Whether the leakage protector is sensitive

 

Common fault pre-inspection:

Phenomenon	Possible causes
Loud vibration and noise	Unfastened bracket/uneven ground
Water leakage	Insufficient slope of drainage pipe