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A real deal WHR company
For the few that may be interested ! Read this thesis on exhaust waste heat recovery. Note that WHR was being used by the US navy back in the 70s. Also note the complexity of capturing waste heat and the reliability issues involved. It is not a simple task !
BUT the In-spirit Stirling can only convert about 10.3 HP of that waste heat energy to electricity.
And that improves the useful output of a D13 by
10.3/375 = 2.7 %. Just not worth the money and weight added, especially when a theoretical improvement of 6.7% can be achieved with a Rankine device, as you yourself have discovered.
I wonder how long you can ignore these simple facts and common sense ??
Oldblue: And what is the point of looking at a diesel producing a lot of waste heat. What point are you trying to make ??
We all know a Volvo D13 produces shed loads of waste heat. If the D13 is 50% efficient then there will be 375 HP or 279 kW of waste energy - minimum, a huge amount !
In-spirit RNS 3 Nov 2020. " , the novel three stage heat recycling process increased engine efficiency by approximately 20%, driven by waste heat from e.g. a Volvo Penta D13 series engine...
ok sigh...... this is basic google diesel engine but give an idea look at power out and the amount lost to exhaust gases
Oldblue: I am guessing from your rambling, random and illogical posts that you are also the author of many of In-spirit's RNS of a similar ilk.
Oldblue: Of course the Charger and Volvo WHR are different items, that is obvious BUT they use the same In-spirit Sterling engine, having a nominal 6.4 kW output. 6 years of failed RNSs having been telling investors of the supposed continued development of that very same engine. It is the very core of their technology - allegedly !
So you are saying the D13 output is increased by 20% that my friend is, for the lowest rated D13, 20% of 375 HP or 75 HP or 75 X 746 Watts = 56 kW.
Where have you seen any information In-spirit have developed or have been developing a 56 kW Stirling engine ?
THE 20% GAIN IS FOR THE STIRLING, IT IS OBVIOUS! FROM THE RNS 3 Nov 2020.
oldblue, you can't really be this stupid! Stop trying to hide the truth by written absolute BS to hide the lies from INSP.
lol unbelivable....phimx pls the charger and the volvo are two seperate items the 20% (which is the gain to the d13 engine from having the WH applied)cant be applied to the 6.4kw from the charger (which is the 100% modulated electrical output)and im sorry but i have better things to do than argue with someone who clearly has no idea about the product or basic engineering or maths....
Oldblue: you seem determined to ignore what I write and simply make up your own story! I think I've made it clear. After demonstrating a model and running a theoretical analysis In-spirit claimed in RNS 3 Nov 2020. " , the novel three stage heat recycling process increased engine efficiency by approximately 20%, driven by waste heat from e.g. a Volvo Penta D13 series engine... "
So 20% more power from the Stirling engine when pumped full of heat from say a D13. I do not mention Chargers, I talk about Stirling engines! YOU talk about Chargers and 20% more power equals a Stirling producing 10.3 HP. To be crystal clear, In-spirit only have 1 Stirling engine design and it supposedly produces 6.4 kW, convert to HP and multiply by 20% and you arrive at 10.3 HP. That is what In-spirit states the Stirling will produce when blasted by the huge amount of waste heat from a D13, you don't have to calculate, they tell you the answer - 10.3 HP.
The Volvo WHR system is a heat collecting system that comprises, the recently coined IHA and that heats the second component, the Stirling engine.
The Charger and the Volvo WHR system ARE connected, by the common factor i.e. the Stirling engine ... Wrong again Oldblue.
and before you ask me to prove it ....i cant as there isnt enougth actual data to do any calculations from ....so you trying to use data from the charger and applying it to the volvo WH is just silly and pointless to even try.....i really hope you not as bad a phsychiatrist as your are at enginnering.....really .....really....hope for the sake off your patients.....
lol point proven thk you very much mr random number maths .....(the 20% is for the WH and not the charger) not connected pls stop using numbers from the charger and applying them to the volvo penta WH your just looking silly and i mean really silly
Oldblue: It was me that pointed out that a new interface to the Stirling would be required and would need designing from scratch and would not be easy. As usual you are answer things that don't need answering
As for adding random numbers, what on earth are you talking about. The problem is very simple and there is no odd maths involved. The Stirling produced 10.3 HP. That is 6.4 kW increased by 20%, GCSE MATHS. A D13, the lowest output being 375 HP. If I increase the D13 output using all 10.3 HP of the Stirling I get an improvement in efficiency of 2.7 %. It could not be any simpler. If I were to add the Stirling to the 1000 HP version, what improvement would I get ?. This is kids stuff.
For the size and weight and presumably the cost, the benefits to Volvo are very very small. Presumably that's why they haven't even committed to an actual test on a real D13 because they know it's waste of time. The development will be strung out as was the Charger, enticing RNSs will written but it be another waste of time and money for investors.
phimx one hint there not actually going to put the boiler/charger in the flue line.....that might not actually work....and the two arnt even connected but you add one random number from the other try to do some odd maths and come out with rubbish on the other and try to convince everyone that you know what you doing.......boiler/charger (water) volvo penta WH (air) and if you dont understand this please go back to pschiatry....and try not to kill all off you patients pls....
Can hear a pin drop!
Not a word from Oldblue, who cannot answer my questions. Not one person has provided a sensible reply as to how Volvo are going to benefit by sticking a 10.3HP Stirling on a D13. The Stirling weighing almost half the weight of the D13 and will cost a load of money.
No details from Inspirit as usual, just vague quasi technical jive.
I'm disappointed not one investor can provide at least some reasonably sensible answer as to how Volvo are going to benefit from the puny 10.3 HP In-spirit. More to the point, how do any of you long suffering long term holders think you are going to benefit from this technology? Also be advised WHR is not some new and wonderous invention, it has been applied in large container ships since, I think, the 80s. What is new are the con men jumping on the green gravy train.
From CRH letter 24 August 2020
3. Lots of numbers. As at 30 June 2019, Mr. Gunn disclosed a holding of 439,696,246 shares.
On 25 November 2019, after the conversion of the majority of the Convertible Loan Notes
(“CLNs”) that had been issued in 2018, Mr. Gunn notified that his interest had increased by
142,857,142 shares. In fact, his notifiable shareholding (direct and indirect) should have
increased by 278,572,428 shares, comprising 142,857,142 direct shares from his CLNs
(received in lieu of £100,000 of personal fees) plus a further 135,714,286 indirect shares from
GIS’ CLNs (received in lieu of £95,000 of monies owed). But in fact Mr. Gunn’s new total
shareholding increased not by 142,857,142, nor by 278,572,428, but by 356,992,128 (to the
currently disclosed 796,687,374). Mr. Gunn’s new direct shareholding (582,553,388 shares)
tallies with previous disclosures (although some indirect shares have morphed into direct
shares) but (a) the conversion announcement did not mention any shares acquired by GIS,
and (b) GIS now apparently holds 78,419,700 more shares (equivalent to 2.7% of the
company) than it should have based on previous disclosures. Too many numbers perhaps,
but seemingly a lack of accurate Director Dealing disclosures. It would be especially
interesting to learn where the surplus 78,419,700 GIS shares have come from
Note the questionable 78,419,700 shares in the above, closely matches the 78,569,746 shares 'bought' and transferred from GIS on 24th February 2021. I now think this was merely a tidying up exercise by John Gunn to correct the errors in the GIS holding. Further investigation needed.
I don’t expect any sensible answers from Oldblue so, I’d like to pose a serious but simple problem to all the board. Presumably some of you hold decent qualifications in physics, engineering, maths or at least are able to think sensibly.
Inspirit have supposedly spent 10 years developing a Stirling engine currently rated at 6.4 kWe or 8.58 HP. From published information, the only other known Stirling model was a 2 kWe version but that has not been mentioned for several years. At the present time there is no working version of the Stirling which incorporates all improvements made during the Design for Manufacturing exercise that have supposedly taken place over the last 3 or 4 years.
Recently after demonstrating a model to Volvo, Inspirit claimed an increase in engine efficiency by approximately 20%. Unfortunately the wording is open to interpretation. Was it the Volvo D13 or the Stirling, which improved?
My take is the Stirling was modelled as improving its output to 7.68 kW or 10.3 HP. The alternative is the D13 was improved by 20% but the problem with that is, it would require finding an additional 75 HP provided by the Stirling, rated at around 10.3 HP !
The Inspirit Stirling engine can only improve a 375HP engine by 2.7% and a 500 HP engine by 2.1%. Bearing in mind the Stirlings are very heavy, very expensive and will be untried. For information a D13 weighs in at 1182 kg, the \Stirling, IHA and cooling pipework must weigh in about 500 kg. The D13’s weight increases by about 42%, that’s a lot !
I don’t see a case for adding an Inspirit WHR system to a Volvo engine, it does little for Volvo
Can anyone else dispute my reasoning sensibly ?
For the non technical. My car alternator produce 65A @ 14.3 V = 930 W or 1.25 HP if I could throw away the alternator my engine would provide me with an additional 1.25 HP worth of power. So if I can create electricity from the waste heat being pumped out of the exhaust, I gain. That’s what WHR is all about, in this case we produce free electricity but mechanical systems exist that can feed the power back to the crank.