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Gas bills aren't calculated by volume of gas but by kWH. You burn the gas and create 1 kW of energy for 1 hour and you'll pay about 14p. For the same time periods energy out / energy out = efficiency
Phinc- seriously mate! That math is so wrong! 1kw is not a unit of gas but rather of energy output!
Honestly! The deramoers are so desperate, they even make up mathematical formulas that are so wrong it's embarrassing.
6.6 kW is the gas required to produce 1 kW of electricity at 15% conversion efficiency.
Amount of gas needed = X
So 15/100 * X = 1 kW
So X = 6.6 kW
jimb2
why waste my energy 'doing the Maths'......if it doesn't WORK
You do some more Maths, keep yourself busy, while GUNN draws more of his salary !
I think Traders have been caught out buying the shares.....and no pi is buying, hence they are maintaining the sp.....IMHO
GUNN, is enjoying another week drawing his upgraded salary, that ye all gave to him for Christmas.
GLA, boy are you going to need it !
The principle is, you generate AC use what you want and feed the surplus into the grid and get paid for it.
Ah OK, I see.
The fact they call it a charger suggested they convert the AC power into DC which will have additional losses too. Combined heat and power plants are only beneficial if there is a demand for lots of hot water and AC power at the time it is created. Storing Hot water and trying to store Electrical AC power into DC power is a complete waste of time and energy. Unless they have developed an AC battery I would say this is a bit of a con.
Not sure I understand those figures lol. Where do you get 6.6kw of gas from.
If I ever get the urge to throw my money away I'll be buying one of those !
electricity produced at 15% efficiency - Inspirits own figure.
So to produce 1 kW requires 15/100 * X = 1 kW or X = 6.6 kW of gas.
6.6 kW of gas costs 6.6 * 3.8p = 25.08 p
Therefore electricity costs 25.08 pence per kW for Inspirit. How much did you say it cost from the grid ?
How much gas would it take to generate 1 kwh of electricity though.
Gas is 3.8p / kWh
Electric is 14.27p /KWh
Do the maths
No price has been given as they have not manufactured one. But at least you are starting to get the picture. The other thing to consider is the thermal output they are quoting. It would barley heat a 2 bedroom house so perhaps it would be running all day in a 4 bedroom house lol.
However cost to run would far outweigh any electricity produced. Its a non starter hence why they have moved onto looking for alternatives. Keep the private investors throwing money in just to keep the lights on.
But its fun to watch
Thanks Phimx! I know how a Stirling Engine works and evaluated one at University in 2004 that's why I was just intrigued to know if they had improved the design such that the Piston that reciprocates actually creates the electricity. Similar to https://www.extremetech.com/extreme/185789-toyota-develops-high-efficiency-free-piston-no-crankshaft-combustion-engine-to-power-an-ev.
But they have not! Does anyone know how much they are selling these for?
This is basically a boiler! once your hot water is at temp you are not going to run this unit to create electricity because that would be ridiculous!
shows the principle workings in video.
https://www.youtube.com/watch?v=LZerJ7BsIFI
15 March 2016
... The Inspirit Charger has now completed more than 1,500 hours of rigorous testing and the Company has demonstrated that the appliance will meet not only market requirements ...
NOT TO RIGOROUS. They seemed to have overlooked the fact it could not achieve its designed aim
30 December 2016
... A prototype of the appliance has been independently tested and shown to be capable of simultaneous generation of up to 15 kW thermal and up to 3 kW electrical output.
INDEPENDENTLY TESTED - By whom
A fantastic way of getting free energy you say, if that were the case and after 200 years, why am I still paying big gas and electric bills. The Inspirit Charger has 15% electrical efficiency, I take that to be for the Stirling engine. What has now been muddled by new web site is what type of energy is driving it, the maximum gas energy in has always been 20 kW. The old web site said waste heat was used BUT to produce 6.4 KW of electrical output at 15 % efficiency requires about 42 kW FROM WASTE HEAT - A TOTALLY IMPOSSIBILITY. That is why their web site was taken down and the story written again. The new web site now suggests the gas burner provides energy, there is no mention of waste heat. Also previously, and still available to read is the minor fact that while producing 6.4 kW of electrickery it still maintained (simultaneously) a hot water output of 15 kW. The word simultaneously has now disappeared and it would seem the Charger can no longer do the simultaneous outputs. This is unbelievable since other statements say that many many hours of testing had been conducted and the Charger had met their internal targets etc.
You seem knowledgeable - why are you asking questions when you use words such as torque, evaporative cooling but can't type Stirling engine into the Google box.
there is no product
You have the world at your fingertips - READ
Hello All, does anyone have any technical knowledge regarding this micro combined heat product? How noisy is it? Does it convert reciprocating linear motion into rotational motion to turn a Generator? I am just interested and deciding whether to invest. I have seen Stirling engines in real life and they are a fantastic way of getting free energy if you utilise wasted heat or use evaporative cooling for the cold side but it is generally low quality energy ie not much Torque if it is used to rotate a Generator. A 6.1Kw gas generator is noisy so just intrigued about the operating principle. Is the reciprocating piston part of the electrical induction??