How Many Amps Does A 8000 Btu Ac Use
The amount of solar power that you need to run an 8000 BTU will mainly depend on the energy consumption of the AC unit, which itself depends on other factors such as run time and temperature. Even so, solar panels are not the only things that you lot demand.
A solar arrangement that could run your 8000 BTU air conditioner would consist of:
- Solar panels
- A solar accuse controller
- A battery bank
- An inverter
These components would be wired as such:
In this commodity, I'll discuss these components and I'll explain the procedure of sizing each of them.
How many solar panels to run an 8000 BTU air conditioner?
In general, to run an 8000 BTU air conditioner, you would need around 100 watts of solar power for every hour of daily run time.
Assuming your 8000 BTU air conditioner runs for viii hours a day, you would need betwixt 700 and 900 watts of solar power to showtime the air conditioner's free energy consumption.
The following table estimates the energy consumption of 8000 BTU air conditioners based on their run time, and the amount of solar ability needed to run them:
| Run fourth dimension | Est. Energy Consumption in Watt-hours (Wh) | Est. Solar Power Needed (Watts) |
| one hour | 500-700 Wh | 100 Watts |
| two hours | 1000-1400 Wh | 200-250 Watts |
| 4 hours | 2000-2600 Wh | 400-500 Watts |
| 6 hours | 3000-4000 Wh | 600-700 Watts |
| 8 hours | 4000-5000 Wh | 700-900 Watts |
| ten hours | 5000-6500 Wh | 1000-1300 Watts |
| 12 hr | 6000-7500 Wh | 1200-1500 Watts |
When it comes to sizing solar panels, there are 2 important questions to enquire:
- How much daily energy usage are y'all trying to offset?
- How much sunlight will be available for the solar panels?
Since these solar panels are for an 8000 BTU Ac unit, you'll accept to figure out the average daily energy consumption of your air conditioner (in Watt-hours or kiloWatt-hours).
The measurement unit of measurement for the daily amount of energy that your solar panels will – on average – receive from the sun, is Peak Sun Hours. Then the previous questions become:
- How much energy does your 8000 BTU air conditioner consume per day?
- How many Peak Sun Hours do y'all become?
The answer to these ii questions will and then exist used to calculate the amount of solar power that you demand:
Solar Ability Needed (Watts) = Air conditioner'south daily energy consumption (Watt-hours) ÷ Daily Peak Dominicus Hours
Let's see how you can determine these 2 variables.
How much energy does your 8000 BTU air conditioner utilise?
Some air conditioners are more efficient than others, and fifty-fifty 2 identical air conditioners can consume different amounts of energy depending on temperature (outdoor temp. and indoor temp. setpoint), humidity, and insulation.
The about precise style to determine the energy consumption of your 8k BTU AC unit of measurement is to mensurate it. And this can be washed through an Electricity Monitoring device.
Chances are your 8000 BTU air conditioner runs on 120 Volts and has a plug, in which example, you can use the Impale-A-Watt meter. The device would be plugged into your wall outlet (or inverter), and your air conditioner can be plugged into it.
The Kill-A-Watt meter will and then display the current (amps), Voltage (Volts), frequency (Hertz), and ability usage (Watts) of your AC unit of measurement. But virtually importantly, information technology'll brandish the Energy Consumption in kWh (kiloWatt-hours) of your air conditioner over fourth dimension:
For example, if your Ac unit of measurement runs for 5 hours a twenty-four hour period, you can plug it in through the device and check out its energy consumption when your plow it off.
If your Air conditioning unit runs on 240 Volts and requires a dedicated circuit (which is probably not the case), you'll need a device such as the Emporia Monitor. However, this device is not as simple equally the Impale-A-Watt and might require an electrician.
Learn more well-nigh this topic in this article: How to measure the free energy consumption of your air conditioner?
In any case, one time yous have an gauge or an accurate measurement, the next pace is to decide the amount of sunlight that your solar panels will be provided with on a daily basis.
How many Acme Sunday Hours do you go?
The amount of energy that a solar console generates depends directly on how much energy it receives from the sun. This sunlight free energy is measured in kWh/thou2 (kiloWatts-hours per square meter), and each 1kWh/m2 is equivalent to i Peak Lord's day Hour.
For example, an expanse that – on average – receives 6kWh/mtwo per twenty-four hour period, could be said to receive 6 Peak Sun Hours per twenty-four hour period.
Peak Sun Hours assist us predict how much free energy a solar installation is capable of producing in a certain location. For instance, if we install 200 Watts of solar in a location that – on boilerplate – receives 6 Peak Sun Hours per twenty-four hours, the solar panels would – on average – produce 1.two kWh of energy per 24-hour interval:
Daily Energy Production (Wh) = Solar Power Rating (Watts) x Daily Meridian Sun Hours
Daily Energy Product (Wh) = 200 Watts ten 6 Height Sun Hours
Daily Energy Production (Wh) = 1200 Watt-hours
Therefore, if your know how much free energy you need the solar panels to produce, and how many Superlative Sun Hours they'll get, you can calculate the amount of solar power that you lot demand.
So, how do yous determine your Elevation Sun Hours?
The answer is the PVWatts Calculator by the NREL (National Renewable Free energy Laboratory).
All y'all need to practice is provide your address, and the tool will display the monthly and almanac average Peak Sun Hours that you become each day:
For instance, I used an address in Phoenix, Arizona, and in the Results section, the tool provided the following data:
At the bottom, you tin can see that on average (annual), this particular location receives 6.57 Top Sun Hours a day.
However, these results are based on the assumption that your solar panels will exist directly facing south and tilted at a 20-caste angle. Simply yous tin however change these values in the Organization Info department of the tool:
Example
For this instance, I'll presume that I have an 8000 BTU air conditioner that on average runs for 8 hours a day, and consumes 4500 Watt-hours of energy during this time.
I'll likewise presume that my solar panels will take admission to half-dozen.57 Peak Dominicus Hours a day. The amount of solar ability that I need to run this AC unit is:
Solar Power Needed (Watts) = Air conditioner'due south daily energy consumption (Watt-hours) ÷ Daily Peak Dominicus Hours
Solar Power Needed (Watts) = 4500 Watt-hours ÷ 6.57 Acme Lord's day Hours
Solar Ability Needed (Watts) = 684.93 Watts
According to these calculations, I'll need at least 684.93 Watts of solar power to run this 8000 BTU air conditioner. All the same, to account for system losses, cloudy days, and extreme temperatures, it is appropriate to bump this number up to 800 Watts of solar.
A good choice for this setup would be 8 of these 12V-100W Renogy Solar panels.
At present that we know how much solar power is required, the next step is to size the battery bank.
What size battery banking concern practise y'all demand to run an 8000 BTU AC unit on solar?
The task of the bombardment depository financial institution is to store all the energy produced past the solar panels and make that energy accessible at all times.
Bold your 8000 BTU air conditioner runs for 8 hours a day, you would need around 400 Ah of available battery chapters (at 12 Volts). This equates to about five 12V-100Ah Lithium batteries (LiFePO4/Li-Ion) or 8 12V-100Ah Atomic number 82-Acid batteries (AGM/Sealed/Flooded).
The following tabular array estimates the battery capacity (lithium or lead-acid) needed to run an 8000 BTU air conditioner on solar:
| Run fourth dimension | Est. Lithium Battery Capacity (@ 12V) | Est. Lead-Acid bombardment Capacity (@ 12V) |
| 1 hour | 50-70 Ah | 80-120 Ah |
| 2 hours | 100-140 Ah | 160-240 Ah |
| 4 hours | 200-250 Ah | 350-450 Ah |
| 6 hours | 300-350 Ah | 500-700 Ah |
| 8 hours | 350-450 Ah | 700-850 Ah |
| 10 hours | 450-550 Ah | 850-1100 Ah |
| 12 hr | 500-650 Ah | 1000-1300 Ah |
In the table, you lot can see that the battery chapters that you need depends not only on the free energy consumption of your air conditioner but too on the type of battery you'll exist using. This is because of something called Depth Of Discharge (DOD).
Simply put, the DOD of a bombardment represents the percent of the overall chapters that tin be used.
For case, a 100AH Lithium-Iron-Phosphate (LiFePO4) battery can supply 80 to 100% of its chapters. On the other hand, a 100Ah AGM bombardment can only supply 50 Amp-hours before it needs to be disconnected or recharged.
Although lithium batteries are more expensive, they can supply double the amount of energy, pregnant that ane of these batteries tin do the job of 2 lead-acid batteries.
In general, the recommended depth of discharge for lithium is 80%, and that of atomic number 82-acid batteries is 50%.
The daily energy consumption of your 8000 BTU AC unit and the DOD of the battery you'll be using, can both be used to determine the bombardment chapters that you demand:
Battery Bank Capacity (Watt-hours) = Air conditioner's daily free energy consumption (Watt-hours) ÷ Depth Of Belch (%)
Since most of the batteries for these applications are rated at 12 Volts, the battery bank'southward chapters in Amp-hours is calculated as such:
Battery Bank Chapters (Amp-hours) = (Air conditioner's daily free energy consumption (Watt-hours) ÷ 12) ÷ Depth Of Discharge (%)
Post-obit our previous case, the Ac unit of measurement consumes 4500 Wh per day on boilerplate. Bold I'll be using a LiFePO4 battery bank, which can exist fourscore% discharged, the chapters that I need is:
Battery Bank Capacity (Amp-hours) = (Air conditioner's daily energy consumption (Watt-hours) ÷ 12) ÷ Depth Of Belch (%)
Battery Bank Capacity (Amp-hours) = (4500 Wh ÷ 12) ÷ lxxx%
Bombardment Bank Chapters (Amp-hours) = (4500 Wh ÷ 12) ÷ 0.8
Battery Bank Chapters (Amp-hours) = 468.75 Amp-hours (@ 12 volts)
An affordable pick for this setup would be 5 or vi of these 12V-100Ah Ampere Time batteries. A more than premium and long-lasting pick would be five or vi of these 12V-100Ah Battle Born batteries.
One time you determine the size of the battery you'll demand, the next step is to select a suitable solar charge controller.
What size solar charge controller do you need?
Solar charge controllers connect the solar panels to the battery depository financial institution, and their job is to protect both the battery bank and the solar panels.
Learn more virtually solar charge controllers here: What is a solar charge controller and why do you need one?
The size of the solar charge controller that you need volition mainly depend on the size of your solar array and battery bank, and their configuration.
But earlier we become into the sizing procedure, there are two types of solar charge controllers that you should know nigh:
- PWM solar charge controllers
- MPPT solar charge controllers
PWM stands for Pulse Width Modulation, and these are the cheaper type of charge controllers and are mostly inefficient. Learn more virtually these devices hither: What is a PWM accuse controller and how does it work?
MPPT stands for Maximum Power Signal Tracking, and these solar charge controllers are the more expensive selection. However, an MPPT solar accuse controller does not but protects your system, only while doing then, it maximizes the energy production of your solar panels.
Related: Why are MPPT solar accuse controllers better?
Since they are the amend long-term selection, I'll focus on MPPTs for the rest of this department. If you are more interested in a cheap curt-term solution, you lot can use our PWM solar charge controller estimator.
To brand the process of sizing an MPPT for your system even simpler, I've fabricated an MPPT solar charge controller computer that does all the sizing for you, all y'all have to do is provide some details that depict your system.
1- Solar panel wattage: This is the ability rating (in watts) on each of your solar panels.
ii- Solar panel open-circuit voltage: Yous tin find this value in the specification label on the back of your solar panels, or past looking up the specific model.
iii- Battery bank'southward nominal voltage: The voltage of each battery is ordinarily written on the casing. If you have more than one bombardment, the voltage of the battery depository financial institution is equal to the voltage from i string of batteries.
four- Everyman temperature during sunlight hours: In this field, you should enter the lowest value of temperature that you approximate your solar panels are ever going to be exposed to. This will allow the calculator to approximate the highest voltage to look.
5- Number of strings: In your solar assortment, how many parallel strings are there?
half-dozen- Number of solar panels in each string: In each string, how many solar panels are wired in series.
In the solar array sizing department, we've determined that we need at least 684.93 Watts of solar ability to run the 8000 BTU unit for 8 hours a mean solar day and then decided to bump it up to 800 Watts. Every bit an case, I'll use 8 12V-100W Renogy solar panels.
A good configuration for this system would exist 4S2P. This ways that we'll take 2 parallel strings of panels, with each cord consisting of iv solar panels wired in series. Our solar array would look like this:
For the battery bank, we've determined that we'll need at least 468.75 Amp-hours of battery capacity (@ 12 Volts). A good choice would be half-dozen of these 12V-100Ah Battle Born batteries. This would give us 600 Amp-hours of battery capacity (@ 12Volts), which is more than enough.
A good configuration for this battery bank would be 3S2P (2 parallel strings each consisting of three batteries in series). With this configuration, we'd finish up with a 36V bombardment bank:
Now that nosotros know what our setup looks like, hither are the values I'll submit to our MPPT solar charge controller calculator:
ane- Solar console wattage: Each of the solar panels is rated at 100 Watts.
2- Solar panel open-circuit voltage: Each of these solar panels has an Open up-Circuit Voltage (Voc) of 22.3 Volts.
three- Battery bank'due south nominal voltage: Our battery bank has a nominal voltage of 36 Volts.
4- Lowest temperature during sunlight hours: For simplicity, I'll assume the temperature does not go below 32°F (0°C).
5- Number of strings: Our setup Consists of 2 strings of solar panels.
6- Number of solar panels in each string: In each string, there are 4 solar panels connected in serial.
I've submitted these details to the calculator, and hither are the results:
Our computer adamant that the solar accuse controller that we need, should be able to handle 99 Volts on the PV side, and put out 20.4 Amps on the battery side.
The figurer recommends the 150V/35A MPPT from Victron as a premium choice or the 150V/50A MPPT from EPEVER as a more than affordable choice. Either of these choices would allow 400 Watts to exist added to the solar assortment, or an extra 1000 Watts of solar (i.8kW full) if we also add together a battery to each string.
The adjacent and last pace is to find the right inverter for our organization.
What size inverterdo yous need to run an8000 BTU air conditioner?
While the battery bank volition provide DC (Direct Current) power, an 8000 BTU air conditioner requires Ac (Alternating Current) power to run. The task of the inverter is to catechumen the relatively low voltage (12/24/36/48 V) DC power from the battery, into a college voltage (usually 120 Volts) Ac power.
In general, to run an 8000 BTU air conditioner on solar, y'all would need a 3000 Watt Pure Sine Moving ridge inverter, which tin handle both the running and starting power of these air conditioners. Nonetheless, the input voltage rating of the inverter should also exist compatible with your battery depository financial institution's voltage.
In this article near sizing an inverter that can run your air conditioner, I explain the specifications that should be considered, in both the Air-conditioning unit and the power inverter. The inverter'south specifications to expect at are:
- Waveform: The inverter you become with should be a Pure Sine Wave inverter. A Modified Sine Moving ridge inverter can cause permanent impairment to your Air-conditioning unit.
- Continuous Ability Rating: 8000 BTU Ac units usually utilize 600-100 Watts of power when running, which means the Continuous Power rating of the inverter should be higher than that.
- Surge Power Rating: 8000 BTU air conditioners can require up to 5000 Watts of power to kick off. A 3000W high-frequency inverter will usually have a surge wattage of 6000W, a 3000W low-frequency inverter volition usually accept a surge wattage of 9000W.
- Input Voltage rating: Generally speaking, about inverters are designed to convert a specific DC voltage. For case, a 12VDC inverter will not be able to run on a 24V DC system.
- Output Voltage: Nigh power inverters in the U.S. market place provide 120VAC, which should exist uniform with your 8000 BTU unit. However, make certain to check the voltage of your air conditioner before choosing an inverter.
Since our battery bank is rated at 36 Volts nominal, a good choice would be this 3000W Pure Sine Moving ridge inverter. It has a Surge Power rating of 6000 Watts and is designed to run on 36 Volts nominal.
To learn more than about sizing an inverter for your air conditioner, please refer to this folio: How to size an inverter that tin run your air conditioner?
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How Many Amps Does A 8000 Btu Ac Use,
Source: https://www.renewablewise.com/how-many-solar-panels-to-run-8000-btu-air-conditioner/
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