Radiation peaks capable of being measured outside the thick SS?
Yikes! I hope not.
Radiation peaks capable of being measured outside the thick SS?
Yikes! I hope not.
Daniel_G: please look at pages 7 and 8 here. I copied your figure. Please check to see if the numbers are right.
Hi Jed. The external dimensions of each plate are 24cm x 34cm x 0.8cm for 653cc per plate which we hope will output 8kW of excess heat. Heat transfer fluid will require about 0.8cm of space between plates so the total depth would become 16cm. That gives about 14L total volume for the 20kWe and 40kWth CHP unit bit this does not include the conversion of heat into electricity components . We are exploring using SC-CO2 as the heat transfer medium which would give a very small turbine on the order of 2-3” then there are cooling system components that have to be factored in.
That gives about 14L total volume for the 20kWe and 40kWth CHP unit
50% Carnot efficiency seems too optimistic to me. I believe small turbine generators such as the Capstone are ~30% efficient. They don't say, exactly. They say:
"Capstone's microturbines can achieve overall efficiency levels of up to 80 percent in combined heat and power (CHP) applications and up to 90 percent in combined cooling, heat and power (CCHP) applications."
Those gadgets are big.
Energy Efficiency :: Capstone Green Energy Corporation (CGRN)
Capstone Green Energy Corporation (CGRN)
Another source:
"Electrical efficiency of the microturbine is 20%–30% and the power range is from 25 to 500 kW [2]. Microturbines are often used in large commercial buildings such as hotels, schools, and offices. . . .
Microturbines - an overview | ScienceDirect Topics
I do not know what Ref. [2] is.
Where does it come from Cydonia ?
The hole for mica window was milled in the SS lid and sealed with a rubber o-ring.
So not at 400C then.
Here we go again
Display More50% Carnot efficiency seems too optimistic to me. I believe small turbine generators such as the Capstone are ~30% efficient. They don't say, exactly. They say:
"Capstone's microturbines can achieve overall efficiency levels of up to 80 percent in combined heat and power (CHP) applications and up to 90 percent in combined cooling, heat and power (CCHP) applications."
Those gadgets are big.
https://www.capstonegreenenerg…lutions/energy-efficiency
https://www.capstonegreenenergy.com/
Another source:
"Electrical efficiency of the microturbine is 20%–30% and the power range is from 25 to 500 kW [2]. Microturbines are often used in large commercial buildings such as hotels, schools, and offices. . . .
https://www.sciencedirect.com/…engineering/microturbines
I do not know what Ref. [2] is.
from a total of 60kWth, we produce electricity at 30% efficiency and need to reject 40kW of heat. SC-CO2 turbines are expected to produce a higher efficiency but at the end of the day, 30% should be a reasonable number. Perhaps can go higher if temps/load are high and will decrease when loads/temps are lower.
Display More50% Carnot efficiency seems too optimistic to me. I believe small turbine generators such as the Capstone are ~30% efficient. They don't say, exactly. They say:
"Capstone's microturbines can achieve overall efficiency levels of up to 80 percent in combined heat and power (CHP) applications and up to 90 percent in combined cooling, heat and power (CCHP) applications."
Those gadgets are big.
https://www.capstonegreenenerg…lutions/energy-efficiency
https://www.capstonegreenenergy.com/
Another source:
"Electrical efficiency of the microturbine is 20%–30% and the power range is from 25 to 500 kW [2]. Microturbines are often used in large commercial buildings such as hotels, schools, and offices. . . .
https://www.sciencedirect.com/…engineering/microturbines
I do not know what Ref. [2] is.
Capstone micro turbines are Brayton cycle turbines. They cannot be compared to a SC-CO2 microturbine which operate under a Rankine cycle with LENR powered systems. SC-CO2 are capable of very high efficiencies but remember the cost engineering of a LENR generator has a very different cost optimization function since fuel costs are negligible. The point is not to wring every bit of efficiency out of a LENR generator, but to optimize the output per $ of CAPEX. Efficiency will get you part of the way but not necessary to max out Nu-th.
Radiation peaks capable of being measured outside the thick SS?
Yes, that is perfectly correct. Anyway it is not happening in a normal operation mode.
Excess radiation readings are mostly result of a gas impurities. During a proper run no elevated readings outside the reactor cell are measured.
I am already in contact with MFMP to ship them meshes within around one week.
Yes, that is perfectly correct. Anyway it is not happening in a normal operation mode.
Excess radiation readings are mostly result of a gas impurities. During a proper run no elevated readings outside the reactor cell are measured.
I am already in contact with MFMP to ship them meshes within around one week.
That is fine, but I have to caution members unfamiliar with your history here, to please do their homework before buying anything. We have been misled down this path before.
from a total of 60kWth, we produce electricity at 30% efficiency and need to reject 40kW of heat.
Oh. I thought you meant the total heat is 40 kW thermal.
40 kW of waste heat is more than enough to heat a house. U.S. home furnaces are usually 80,000 to 100,000 BTU = 23 to 29 kW.
So, that takes 8 plates, right? (7.5) The cutaway figure shows only 6. The length is ~16 cm, including the space at either end of the array. The total 14 L volume is for the whole kit and kaboodle, including the cabinet. It is not much bigger than a truck battery, which is 12 L:
DieHard Platinum AGM Battery, Group Size H8, 900 CCA
7.5 in x 14 in x 7 in = 735 cubic inches = 12 L
58.7 lb = 27 kg
I changed the paragraph in the paper to this:
Figure 7 shows a projected design with plates 24 cm × 34 cm × 0.8 cm, 653 cm3 each, producing 8 kWt per plate. By volume that is 12 W/cm3 for the entire plate. The plates are ~0.8 cm apart. An array of 8 plates would be needed to produce 60 kWt, 20 kWe. It would be 16 cm long, so total volume is ~14 L. This is a little bigger than a truck battery (12 L). The total volume of cold fusion reactant metal would be ~3 L. The reactant metal in this projected design is reportedly not palladium or any other rare or precious metal, so the cost should be low.
SC-CO2 are capable of very high efficiencies but remember the cost engineering of a LENR generator has a very different cost optimization function since fuel costs are negligible. The point is not to wring every bit of efficiency out of a LENR generator, but to optimize the output per $ of CAPEX.
That is the whole point of my paper:
https://www.lenr-canr.org/acrobat/RothwellJmoreaboutw.pdf
And the previous one:
https://www.lenr-canr.org/acrobat/RothwellJcoldfusionb.pdf
"Figure 4 shows a Chevrolet automobile engine, 145 kW. It is abominably inefficient (Figure 5). However, it costs only $1,460, with Free Shipping. That comes to $10 per kilowatt. That is 130 times cheaper than the GE generator. It is 600 times cheaper than some other power company generators. It is cheaper because it is mass produced and because it is optimized for low cost. Since cold fusion energy costs nothing, we will optimize the equipment for low cost. It will eventually be about 200 times cheaper than today’s power company generator."
It would be around 4 times cheaper at first, using conventional mechanical generators. See Table 1 in the first paper. I assume piston steam engines would be cheapest.
So not at 400C then.
Maybe just at 400C with silicone?
Maybe just at 400C with silicone?
Is it required to seal to low Torr also?
to seal to low Torr also?
I'm sure the Oring leaked
high T + vacuum is tricky..
but leaked probably slow enough to get some info..
Mica absorbs most gamma
a beryllium window lets much more through
but costs $.. of course
Me356-say
" We measure Alpha, Beta & Gamma, Gamma, Neutrons, each has its own counter and/or scintilator."
Sounds like Thomas spent a few Koruna
That is fine, but I have to caution members unfamiliar with your history here, to please do their homework before buying anything. We have been misled down this path before.
Twice! Was it not?