24000 BTU Full DC Off-Grid Solar Air Conditioner

24000 BTU Full DC Off-Grid Solar Air Conditioner Uses a 2.2 kW Solar Array

A 24000 BTU full DC off-grid solar air conditioner provides a cooling option for locations without dependable mains electricity.

The proposed system combines a split air conditioner with four 550 W solar panels, four 200 Ah batteries and one 48 V/50 A controller. Its compressor and fan motor are described as 48 V DC components, creating a direct-current architecture intended for solar generation and battery storage.

The system can use solar electricity during daylight hours and stored battery energy when solar input decreases. Actual off-grid operating time depends on cooling demand, solar conditions, battery specifications and overall system efficiency.

Main System Configuration

The proposed 24,000 BTU solar air-conditioning package includes:

• Cooling capacity: 24,000 BTU
• System type: Full DC off-grid solar air conditioner
• Compressor and fan motor: 48 V DC
• Solar panels: 4 × 550 W
• Total solar-array rating: 2,200 W
• Batteries: 4 × 200 Ah
• Controller: 1 × 48 V/50 A
• Grid connection: Not required when the complete off-grid system is correctly configured
• Intended application: Areas without mains electricity or with frequent power outages

These values provide an initial basis for system planning. Final compatibility must be confirmed through the air conditioner’s electrical data and the specifications of each solar component.

2.2 kW Solar-Panel Configuration

Four 550 W solar panels provide a combined nominal array capacity of:

[
4 times 550text{ W}=2,200text{ W}
]

The resulting solar-array rating is 2.2 kW under the panels’ specified standard test conditions.

Actual solar output will vary according to:

• Solar irradiance
• Panel orientation
• Installation angle
• Partial shading
• Cell temperature
• Dust accumulation
• Cable length and conductor size
• Controller efficiency
• Seasonal daylight duration

A 2.2 kW nameplate rating should not be interpreted as continuous 2.2 kW generation throughout the day.

Daily energy yield should be calculated using site-specific peak-sun-hour data and realistic system losses.

48 V/50 A Solar Controller

The proposed controller is rated at 48 V and 50 A. Its nominal output-power relationship is:

[
48text{ V}times50text{ A}=2,400text{ W}
]

This approximately 2.4 kW controller rating is above the 2.2 kW nominal solar-array capacity. At a basic power level, the two ratings appear reasonably aligned.

Controller selection cannot be confirmed from output power alone. Technical teams must also verify:

• Maximum PV open-circuit voltage
• MPPT operating-voltage range
• Maximum PV input current
• Maximum charging current
• Maximum permitted PV power
• Operating-temperature derating
• Battery-chemistry settings
• Required circuit protection

The four solar panels must be connected in a series-parallel arrangement that remains within the controller’s voltage and current limits.

Four 200 Ah Batteries

The system includes four batteries rated at 200 Ah each. Ampere-hour capacity cannot be converted into stored energy until the voltage of each battery and the wiring arrangement are known.

If the four batteries are each rated at 12 V/200 Ah and connected in series, they would form a:

• 48 V battery bank
• 200 Ah battery-bank capacity
• 9.6 kWh nominal energy capacity

In a series connection, the voltage increases while the ampere-hour capacity remains 200 Ah. The system should therefore not be described as a 48 V/800 Ah battery bank.

The actual usable energy will be lower than the nominal 9.6 kWh because it depends on battery chemistry and allowable depth of discharge.

Application in Areas with Limited Grid Access

The off-grid solar AC is intended for locations where conventional electrical infrastructure is unavailable or unreliable.

Potential applications include:

• Remote residential buildings
• Rural accommodation
• Isolated offices
• Field stations
• Temporary project facilities
• Buildings affected by frequent power outages

Each application requires a separate assessment of solar resources, cooling load and required operating time.

A system intended for daytime use may require less battery capacity than one expected to operate throughout the night or through several cloudy days.

Solar and Battery Sizing for Reliable Operation

System sizing should begin with the air conditioner’s measured daily electrical consumption.

The required solar-array energy must cover:

1. Direct daytime air-conditioner consumption
2. Battery charging for later operation
3. Controller and wiring losses
4. Battery charging losses
5. A reasonable allowance for variable weather

The battery bank should be sized according to:

• Required hours of operation without sunlight
• Average electrical load
• Maximum permitted depth of discharge
• Battery efficiency
• Expected ambient temperature
• Required battery service life

Without these inputs, the listed solar and battery components can be described as a proposed configuration but not as a universal solution for every climate or building.

Installation and Electrical Protection

A full DC off-grid air-conditioning system requires coordinated solar, battery and refrigeration installation.

The design should include:

• DC-rated circuit breakers or fuses
• Battery isolation
• Correct cable sizing
• Surge and lightning protection
• Equipment grounding
• Reverse-polarity protection
• Battery ventilation or thermal management
• Secure solar-panel mounting
• Refrigerant-pipe installation
• Condensate drainage
• Outdoor-unit clearance
• Maintenance access

All protection devices must be rated for the system’s maximum DC voltage and current.

Technical Information to Confirm Before Procurement

Before publishing the system as a complete 24,000 BTU off-grid package, B2B buyers should obtain:

• Exact air-conditioner model
• Rated cooling capacity
• Rated and maximum input power
• Average power under defined loads
• Operating-current range
• Refrigerant type and charge
• EER or applicable efficiency rating
• Airflow and noise data
• DC input-voltage range
• Individual battery voltage
• Battery chemistry and cycle data
• Solar-panel voltage and current
• Controller MPPT range
• Approved solar-panel wiring diagram
• Calculated runtime under defined conditions
• Product and electrical certifications
• Packaging and container-loading data
• Warranty coverage