- #1
RonL
Gold Member
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- 219
Not wanting to be guilty of thread hi-jacking I'll start a new one. This design is in the start of assembly stage, but i will not engage it until i have a few more answers, but i do have all equipment, except for plumbing and fittings, and pressure release valves.
The thread by HashsBack, using hydrogen sounds similar, and Q_Goest has provided information that is over my head at this time, but I'll be looking at that quite a bit.
The design I'll use is a 500 gallon propane tank, and a few other tanks, smaller but rated for higher pressure.
The first answer I'm looking for is time of cycle in the first step, which involves the 500Gal. tank (painted black) in full sun, and containing from 30 to 50 gallons of liquid propane. As the sun heats the tank pressure builds to design pressure of 125 PSI, the gas vapor releases and flows Thur pipe to an air motor that drives the generator. As pressure drops in the tank i think it will cool quickly, so a quick cycle pressure of around a 20 PSI delta?
If work is transferred to the generator, then what condition needs to exist at the air motor exhaust in order to liquefy and be injected back into the tank? ( I'm thinking too low of a temperature at the exhaust of the main air motor will be a detriment to the input)
A section of tubing or small tank, having a low pressure, created by a secondary air motor, or compressor(taking some energy from the generator) might be a, not too negative solution.
After a slowdown or stop condition, the sun continues to heat the tank and the cycle repeats.
In the event of a failure of the mechanical portion of the system, an electromagnetic safety breaker would release, isolating the main tank, and pressure release valves would protect the low pressure portion of the system. Since the tank is painted black it to has to have a max release, so some propane might be lost. All released gas can be flared at a safe distance above.
Night temperatures of 80 to 90 F. will drive this system to a small output, even without sunshine.
There is a fair amount more to my design, but any feed back from this first portion would be great.
Thanks
RonL
PS. Sorry this is not in metric, if i need to change it, I'll put more effort into that next time (just one of those old holdouts)
The thread by HashsBack, using hydrogen sounds similar, and Q_Goest has provided information that is over my head at this time, but I'll be looking at that quite a bit.
The design I'll use is a 500 gallon propane tank, and a few other tanks, smaller but rated for higher pressure.
The first answer I'm looking for is time of cycle in the first step, which involves the 500Gal. tank (painted black) in full sun, and containing from 30 to 50 gallons of liquid propane. As the sun heats the tank pressure builds to design pressure of 125 PSI, the gas vapor releases and flows Thur pipe to an air motor that drives the generator. As pressure drops in the tank i think it will cool quickly, so a quick cycle pressure of around a 20 PSI delta?
If work is transferred to the generator, then what condition needs to exist at the air motor exhaust in order to liquefy and be injected back into the tank? ( I'm thinking too low of a temperature at the exhaust of the main air motor will be a detriment to the input)
A section of tubing or small tank, having a low pressure, created by a secondary air motor, or compressor(taking some energy from the generator) might be a, not too negative solution.
After a slowdown or stop condition, the sun continues to heat the tank and the cycle repeats.
In the event of a failure of the mechanical portion of the system, an electromagnetic safety breaker would release, isolating the main tank, and pressure release valves would protect the low pressure portion of the system. Since the tank is painted black it to has to have a max release, so some propane might be lost. All released gas can be flared at a safe distance above.
Night temperatures of 80 to 90 F. will drive this system to a small output, even without sunshine.
There is a fair amount more to my design, but any feed back from this first portion would be great.
Thanks
RonL
PS. Sorry this is not in metric, if i need to change it, I'll put more effort into that next time (just one of those old holdouts)
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