Air conditioners are divided into fixed frequency and variable frequency. The power consumed by a 1.5 HP fixed frequency air conditioner during cooling is about 1100 W. The stable operating power of a 1.5 HP variable frequency air conditioner is about 500 W. 700 W. Fixed frequency works intermittently and variable frequency works continuously. There is not much difference between the overall average power of variable frequency and fixed frequency. For convenience, 600 W is used as the calculation standard.
First, the scenario assumes that you run the air conditioning 24 hours a day.
Set the power to 600 W and consume 14.4 kilowatt hours of electricity in 24 hours. The solar panel generates 5 kilowatt hours per day on sunny days. To use the air conditioner 24 hours a day, you need 3 kW solar panels and batteries capableto store 10 kilowatt hours of electricity.
Considering that the efficiency of commercially available power frequency inverters is generally around 75%, it is rare to purchase a power frequency inverter with an efficiency of 90%, therefore batteries and solar energy. A margin of 25% must be left.
Also, it's not as simple as a 1.1 kW inverter can drive a 1.1 kW air conditioner. Since the compression motor is a typical inductive load, the instantaneous starting power is. Basically, the rated power is about 5 times the power, so the inverter should be more than 5 times the rated power of the air conditioner to start the air conditioner smoothly. Therefore, the inverter must be greater than 6 kW. The inverter air conditioner is much smaller and the inverter can be smaller accordingly. However, considering inductive loads such as thes refrigerators and washing machines, it is recommended to choose a large inverter rather than a small one.
Solar panels should not be directly connected to the air conditioner. The power supply is unstable and the air conditioner is easily damaged. There must be a large capacity battery to store electricity. power, then reverse the voltage of the air conditioner.
The biggest problem is that there can't be clouds in the sky blocking the sun. If a white cloud floats above your air conditioner, you need to turn it off! Anyone who has used a solar water heater knows that it produces boiling water in summer and hot water in winter.
Regardless of the size of the panel solar, it cannot be used. for air conditioning, because the electricity produced cannot be stored. On sunny days, electricity is only produced for 4 hours per day and there is no electricity for the resttime.
How big is a solar generating system that can power a 1.5 HP inverter air conditioner?
To produce electricity from photovoltaic panels that can power 2 air conditioners, a 5 KW battery is needed.
To design a photovoltaic system, you need to know the weather conditions where the equipment is installed, as well as the average solar radiation, the number of longest rainy days and the number of days between two days consecutive rains. days These conditions are used Count the number of solar panels. Additionally, you need to know the power requirements of the load, whether a power outage is allowed, and the maximum duration allowed for a power outage, to take into account battery capacity. If local light hours are low, a 2 kilowatt load will typically require a lot of solar cells and a lot of batteries. If long-term electricity supply can be resolved, it is better not to use photovoltaic systems, which are very expensive. If the issue of costs is not taken into account, the use of photovoltaic systems will have a negative impact on the environment and the reduction of carbon dioxide. Peloton has great advantages.
It is possible to calculate it from the point of view of electrical power alone. Since the maximum electrical power of a 1.5p air conditioner is only 1 kW, solar energy is a 2 kW inverter, which can power the inverter air conditioner.
Now it's time to calculate how long solar energy can run the air conditioner: four solar panels can generate 5 kWh of electricity, or 5 kilowatt hours of electricity, based on a efficient lighting for 5 hours per day. day. Solar energy means that as long as the air conditioner does not consume more than 5 kilowatt hours of electricity per day, everything will be fine.
The room space of the inverter air conditioner is not large, and the room is well insulated. Taking summer as an example, the set temperature should not be too low if the power of the inverter air conditioner during. operation is not more than 400 W, then 5 The air conditioner can work for 12 hours per kilowatt hour of electricity! If the air conditioner is running at full capacity, it can only run for 5 hours.
Detailed information:
Advantages and disadvantages of solar energy:
< p> Advantages1. Solar energy is inexhaustible. Solar radiation received by the Earth's surface can meet 10,000 times the global energy demand. As long as solar photovoltaic systems are installed in 4% of the world's deserts, the electricity produced will be able to meet the world's needs. Energy productionSolar energy is safe and reliable and will not be affected by energy crises or fuel market instability;
2. Solar power can be used anywhere and can provide power nearby without having to transmit it over long distances. avoid loss of long distance transmission lines;
3. Solar energy does not require fuel and the operating cost is very low;
4. , is not easy to damage and is simple to maintain, especially suitable for use in unattended conditions;
5. Solar power generation produces no waste, pollution, noise or other public hazards; and has no negative effects on the environment. It is an ideal clean energy source;
6. Construction of solar power generation system The cycle is short, convenient and flexible, and the quantity of solar panels can be added. or reducedat will depending on the increase or decrease in load to avoid waste.
Disadvantages
1. Application to the ground is intermittent and random, and the amount of energy generated is linked to climatic conditions. It cannot or rarely generate electricity at night or on rainy days;< /p>
2. The energy density is low Under standard conditions, the intensity of solar radiation received on the ground is 1000W/M^2. When used on a large scale, a larger area must be occupied;
3. The price is still relatively expensive, 3 to 15 times that of conventional electricity generation, and the initial investment is high.
Baidu Encyclopedia - Solar Power Generation System
Baidu Encyclopedia - Inverter Air Conditioner