Solar Power Heat Transfer

We used cotton seed oil.

Some plants use water, other molten salt, mixture of potassium and nitrite salt becomes liquid above 270 deg C, two tanks are present one for cold and one for hot liquid, heat exchanger transfer heat to water. There is a option for Thermocline (I'm suer spelling is wrong) oil, quite a bit more expensive but it has double heat capacity them liquid salt. Salt is by far cheaper and safer.

Hello Guest,

Fully agree with your advice.

Been working same Field for some time.

Our only doubt with molten salt is its capacity to acid corrode out tank.

Cheers

Peter

Hu Das Energy,

Potassium Nitrite in the mixture with salt doesn't allow steel corrosion. It's a splash rust and weak anti-corrosive ingredient. However, what's happening when the mixture cool down under 270*C, become solid. How could we return to liquid form to insure flow and heat transfer? Ask the suggestor: What to do in that case, Gil.

Hello Gil,

Thank you !.

"What to do in that case",

Stay above 270*C

Use oil.

Convert from a Steam drive to CO2 drive 120*C 9,926 barg pressure or remain Steam 550*C 175 barg pressure.

After the heat cell came the DaS Valve.

CO2 is liquid at 31*C and 74 barg pressure, called its critical temperature, at higher temperature its called supercritical and remains a gas yet behaves like water.

Peter.