diy solar

diy solar

Recent content by cotswoldstony

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    Battery 12 v parallel

    You are correct the batteries limit the charging rate. Did you equalize the 2 batteries or just put them together without doing that. Lead acid batteries are top balanced and lithium bottom balance and both must be equalized. Out of balance batteries will only charge to the highest state of...
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    24v GEL batteries charge levels?

    There's 3 stages to charging batteries first bulk with highest charging rate 29 volts then absorption lower charging 28 volts then float or trickle charge 27.4 volts. Set float/trickle charge to 27.4 volts Normal for voltage to drop when inverter is used dropping by about 2 volts Try to keep...
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    Sorel Temperature Difference Controller overheating

    I don't know that type of d.i.y solar set up but here is what to check. Solar water heating systems can operate ac or dc water heater elements based on resistance not voltage. The difference is dc power will burn out ac switches not heater elements due to higher heat transfer so you need to...
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    Panel array question.

    19-22 volt solar panels are not usually used for a 24 volt solar system because they need more wiring and fitting using twice as many panels. Common mistake with solar beginners because it's seems easy to put a solar system together but the bigger the system the more problems. Your solar array...
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    AC300 Charge controller max voltage

    You need to understand that dc is lower voltage than ac so higher amps hence higher heat is generated. In my experience it is always best to with any electrical equipment/wiring ac or dc to reduce the maximum recommended operation by 25% for safety and long service life. Dc components in the...
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    Advice on land mounted array 60 m (200 ft) away from the solar charge controller

    Hi, your solar array needs to be high voltage with high voltage charge controller so a 12 volt system with 12 volt solar panels will not work well over a long distance and generate high amps so thick wiring would be required with maximum 25 amps at mc4 connectors. If you are going to upgrade...
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    Need advice powering immersible heaters with solar!

    Hi, pv solar water heating works well in the summer months using dump load for free hot water especially on small capacity water tanks and you have a good solar array to do this. This will not work well in the winter months in the UK so I would suggest fitting a heat exchanger coil around the...
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    Heat without electricity recommendations.

    Modern buildings now use outside air in ventilation systems to circulate the air/heat/humidity for the vapour control layer around rooms to be able to use heat source pumps efficiently lowering the carbon foot print of the building.
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    Heat without electricity recommendations.

    Check heating and ventilation building stats in the construction industry vapour control layer regarding humidity. That's where the facts came from in my posting which also confirm rear outside air intake wood stoves work more efficiently.
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    Heat without electricity recommendations.

    For every 10 degrees c of heat the humidity in a room drops by 50% so for a room to stay warm and comfortable it needs to be around 50-60% humidity
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    Heat without electricity recommendations.

    Humidity is important it brings heat down from the ceiling keeping the room warmer so increasing humidity increases the temperature.
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    Heat without electricity recommendations.

    Wood stoves with outside air intake at the rear pull cold air making the fire work much better and do not pull cold air into the room pushing warm air towards windows and doors increasing room temperature lowering the amount of wood used.
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    Heat without electricity recommendations.

    Wood stoves need air to operate so they suck in warm air from the room pulling cold air from the outside via draught in windows/doors.
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    What can I use on this system please?

    Not enough information on the monitor it's only showing a 24 volt system charging a battery bank that's at 24.9 volts which is getting close to most you want to drain from the battery bank. However using a juicer for 5 minutes should be o k try not to let the voltage drop below 24 volts that's...
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