Letaba Biomass to Energy PDD - MyClimate

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Introduction PROJECT DESIGN DOCUMENT FORM (GS-VER-PDD) Voluntary Offset Projects - Version 01 Annex 2 BASELINE INFORMATION This template shall not be altered. It shall be completed without modifying/adding headings or logo, format or font. page 38 In this section the small-scale methodology used is discussed. Before this is done however it is necessary to set out certain important facts about the plant at Letaba Estates in order to place the methods used and calculations made below in proper perspective. Firstly, the project baseline at Letaba Estates is the coal used in two applications namely the peel driers and the boilers respectively. Phase 1 will see the former switching to biomass and Phase 2 the latter. The energy efficiency measures implemented in the peel dryers and steam plant will eventually see the feedstock/input requirement being lowered – however in the baseline it remains at historical efficiency levels and based on coal rather than biomass. Secondly, the plant produces two categories of fruit juice namely citrus and single strength. The citrus product line processes oranges, navels, grapefruit, lemon, Midseason, mineola and Valencia. The single strength fruit product line processes banana, butternut, guava, granadilla, kiwi, mango and paw paw. Citrus juice is made in concentrate, meaning that much water has to be vaporised. Single strength juice however is made in its final form and merely heated. For partially this reason and because output of citrus is measured in concentrate while output of single strength juice is measured in final juice produced, the emissions factor for citrus concentrate is much higher than the emissions factor for the single strength juice line. Because, as prescribed by AMS III.B, annual output (concentrate of citrus and final product single strength fruit) produced will be monitored to establish emissions reductions and because the relative quantities of fruit juices made differ from year to year, it is necessary to distinguish between the energy used to process each category of fruit in order to always be able to determine emissions reductions regardless of relatively how much citrus concentrate and single strength fruit juice is produced in each year of the Project Activity. Separate emissions factors are thus determined for citrus concentrate and subtropical/singe strength fruit juice. Thirdly, in the baseline coal has been used at the processing plant to both produce steam and dry the peels. Accurate records exist of how much coal was used but historically no distinction was made between coal going to the boilers and coal going to the peel dryer. There also was no constant ratio between the amount of coal being put to these two different uses. It therefore becomes necessary to establish historical emissions not only for each tonne of citrus fruit juice and each tonne of single strength fruit juice produced but also for each tonne of peels dried in order to be able to monitor and calculate emissions reductions by monitoring the quantity of fruit juice produced (distinguished as between single strength and citrus) and the quantity of peels dried. The emissions factors are thus theoretically calculated. Fourthly, at present the ash from the boilers at Letaba is landfilled on the property. In the Project Activity less waste will be produced and it will be landfilled as before. Fifthly, the new baseload multi-fuel boiler and also the remaining boilers (when they are still needed in times of high steam demand) will be fired initially and after periodic maintenance by using solid wood chunks. There will thus be no use of this auxiliary fossil fuel, however, should an emergency necessitate the use of coa,l the use thereof will be monitored. Sixth, the calculations further in this document are based on starting with the aggregate amount of coal used historically for both the peel drier and the boilers and first establishing how much was used by the peel drier. This is done by the theoretical model developed and included below. By subtraction it is then possible to establish how
PROJECT DESIGN DOCUMENT FORM (GS-VER-PDD) Voluntary Offset Projects - Version 01 much coal historically has been used for the boilers. The historical coal use is a function of the relative amount of citrus concentrate and single strength fruit juice made in a year and a calculation is made to determine the relative energy needs of the two types of output and to calculate an emissions factor for each. BASELINE DATA Carbon content coal and CV of coal at Letaba Estates This template shall not be altered. It shall be completed without modifying/adding headings or logo, format or font. page 39 Historical ITEM QTY UNIT fruit juice and peel Coal CV as per lab results 27.00 Mjoule/tonne Carbon content coal (lab tests) 60 % production and coal use at Letaba Estates FRUIT TYPE TOTAL JUICE - 2001 2002 2003 2004 2005 Litre 10 927 196 10 387 835 Dried peel 11 269 302 17 183 685 13 095 236 produced – tonne Coal used – total for boilers and 3 645 3 379 3 496 3 153 3 558 peel driers 6 500 6 600 5 700 8 872 8 265 Calculation of peel drier emissions factor Coal requirement = Amount of water that needs to be evaporated to achieve 1 ton of dried peels * gross heat requirement to evaporate 1 ton of water considering all losses / CV of Coal = 3.444 tonne * 4.722245 GJ/tonne/27 = 0.602349 tonne of coal/tonne of peels dried CO2e emissions factor = coal requirement * atomic weight of CO2/atomic weight of carbon * carbon content of the coal = 0.602349 * 44.01 / 12.01 * 0.6 = 1.324364 tonnes CO2e per tonne of peels dried Establishing how much coal historically has been used by the peel drier and boilers respectively The coal requirement in the peel drier is 0.602 tonnes per tonne of dried peels produced. When using the 0.602 and multiplying it by the average peel produced in the last five years, the following average coal use attributable to the peel drier and boilers respectively is found: 2006 16 465 571 3 341 7 560 2007 AVE- RAGE 16 366 652 13 148 160 3 991 3 509 7 558 7 294
Page 1 and 2: THE GOLD STANDARD: Project Design D
Page 3 and 4: SECTION A. General description of p
Page 5 and 6: PROJECT DESIGN DOCUMENT FORM (GS-VE
Page 9 and 10: SECTION B. Application of a baselin
Page 11 and 12: purposes (i.e. agriculture), and no
Page 21 and 22: SECTION D. Application of a monitor
Page 23 and 24: Sustainable Development Indicator D
Page 25 and 26: 11 Load factor of cooling rooms/VAC
Page 31 and 32: SECTION E. Estimation of GHG emissi
Page 33 and 34: Year Estimation of Project Activity
Page 37: Organization: African Realty Trust
Page 41 and 42: Single strength % = 2 810 / (22 554
Page 43 and 44: This is described in section D abov
Page 45 and 46: comparing the concentration of most
Page 47 and 48: foreign currency savings may result
Page 49 and 50: Not applicable 13. Will the effect
Page 51 and 52: 6. Are there any areas on or around
Page 53 and 54: 21. Are there any areas on or aroun
Page 55 and 56: Annex 8 Calculation of the Grid Emi

Letaba Biomass to Energy PDD - MyClimate

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