Solar Panel Connected Directly To Dc Element

Need to check the voltage of the element and keep it under the mppt voltage of the panel.

Solar panel connected directly to dc element.

Open circuit voltage is to be measured directly from the solar panel s lead wires. The dc element has a uniquely designed over temperature cut out system with unique ip protected technology. Hi all im currently designing an approximately 1kw 4x230w solar pv water heating system. Suppose the panel is a 12 volts design then the open voltage will be around 20 21 volts dc.

Connect a solar array directly to a hot water element making sure you match the maximum power point voltage with the rated voltage of the water heating element. Simply wire the solar panel directly to the dc water heating element or through a thermostat to regulate the water temperature. Im aware that directly hooking an element to solar is a very inefficient method due to the solar cells not getting to there max power vi curve where the sun is at a low angle or cloud cover etc output load is not variable. Wasteful in terms of water but simple and effective.

If you have added extra wire or an extension to your lead wires you can measure the voltage at the end of these. In principle you can connect many things with each other. One popular application for our submersible dc water heating elements is to prevent freezing in stock tanks used for livestock. How to heat water with solar panels add an optional thermostat you can use a solar panel to make hot water or to keep water from freezing.

Use an off the shelf pressure temperature relief valve to dump the hot water down the drain before it becomes steam.