[Stoves] Wonderwerk stove, more information

[Crispin Pemberton-Pigott]

Dear Kirk

I think this needs less correction that you offered. There is (as far as I know) no WBT 4.2.4, but there is a WBT 4.2.3 spreadsheet update bearing the number 4.2.4. It is on the GACC website.

The difference is that WBT4.2.3 is a test protocol and there is an accompanying spreadsheet. From what I see from Berkeley, they say the Python software reproduces the math and outputs of what is contained in the 4.2.4 spreadsheet, which is different from the 4.2.3 spreadsheet.

There are more than 660 differences mostly resulting from the deletion of entries (sort of like example data). It has been removed.

There is no longer a tab explaining what the differences are (what was changed from the previous versions) and there is no separate document on the website explaining the changes. There are other documents explaining some of the previous changes between previous version but not the latest one so you are on your own in that regard.

In order to see what the differences are in the result, I fill in different version of the spreadsheet using the same inputs. In that way you can see the effect on the calculated performance from different versions as the sheet evolves.

‎Regards
Crispin






There was a typo in this submission.  The WBT 4.2.3 was used not 4.2.4.

Kirk H.
  ----- Original Message -----
  From: kgharris
  To: Discussion of biomass cooking stoves
  Sent: Thursday, July 07, 2016 5:45 PM
  Subject: [Stoves] Wonderwerk stove, more information


  All,

  The engineer at Lawrence Berkley National Labs stove testing lab has supplied the following information concerning the recent tests of the Wonderwerk TLUD-ND stove.
  Kirk H.

  Our plan is to put everything in a publication once we have finished testing all of the stoves.
  ____________

  The numbers I reported to you are calculated using equations in the WBT 4.2.4. We do not use a spreadsheet to calculate those numbers and instead use a Python code we developed to read it our raw data. Also, we do not do the carbon balance method to calculate PM2.5, but instead use the total dry fuel consumed method (fcd). Using Python helps us also analyze our ultra-fine particle data. Before you left, we cross checked our numbers with the WBT 4.2.4 spreadsheet (that we double checked for errors) to make sure nothing looked amiss with our Python analysis. This is something we always to to ensure data was imported correctly.


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