topic 3 2 full supply chain greenhouse gas ghg emissions assessment l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Topic 3.2. Full supply chain greenhouse gas (GHG) emissions assessment PowerPoint Presentation
Download Presentation
Topic 3.2. Full supply chain greenhouse gas (GHG) emissions assessment

Loading in 2 Seconds...

play fullscreen
1 / 20

Topic 3.2. Full supply chain greenhouse gas (GHG) emissions assessment - PowerPoint PPT Presentation


  • 74 Views
  • Uploaded on

Topic 3.2. Full supply chain greenhouse gas (GHG) emissions assessment. Carly Whittaker & Dr Richard Murphy, Imperial College London Dr Nigel Mortimer- North Energy Associates Ltd. . Imperial College London – November 13 th & 14 th 2009. Overview. Task 3.2

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Topic 3.2. Full supply chain greenhouse gas (GHG) emissions assessment' - latanya


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
topic 3 2 full supply chain greenhouse gas ghg emissions assessment
Topic 3.2. Full supply chain greenhouse gas (GHG) emissions assessment

Carly Whittaker & Dr Richard Murphy, Imperial College London

Dr Nigel Mortimer- North Energy Associates Ltd.

Imperial College London – November 13th & 14th 2009

overview
Overview
  • Task 3.2
  • Introduce TSEC-Mini-Tool for Biomass Supply Chains
    • Major elements
    • Options and flexibility
  • How it can be used

Imperial College London – November 13th & 14th 2009

slide3

Kg CO2 eq.

MJ Grid Electricity

MJ Diesel

Kg CO2eq

Kg CO2 eq.

Machines

Task 3.2:

GHG Analysis of biomass supply chains in the UK

MJ Natural Gas

Kg CO2 eq.

On-site Processing

Kg CO2 eq.

Biomass feedstock production

MJ Diesel

Conversion to energy

Processing

Transport

Storage

Machines

Construction

Vehicles

Fertilizers

Stuff

Construction

Material

Losses

Material

Losses

Material

Losses

  • Step 1: Define supply chains
  • Step 2: Plug in numbers
  • Step 3: Make it useful
  • Step 4: Use it!

Imperial College London – November 13th & 14th 2009

introducing tsec mini tool
Introducing: TSEC-Mini-Tool
  • MS Excel – ‘traffic light system’ for users
  • Covers :
    • 15 Types biomass
    • 6 Land-use reference systems
    • 3 Waste reference systems
    • 10 Transport options
    • 4 Outputs: Electricity, heat, CHP, or co-fired electricity.
  • Output:
  • Energy requirement and CO2 emissions specific to your supply chain
  • Breakdown of where all emissions occur

+ BEAT2

Imperial College London – November 13th & 14th 2009

using the tsec mini tool
Using the TSEC-Mini-Tool
  • 1. Biomass Feedstocks:
  • MJ/Kg CO2 eq. per ODT of:
    • Miscanthus
    • Wheat Straw
    • Forest Residues
    • Short Rotation Coppice
    • Waste Wood
    • Arboricultural Arisings
    • Olive Residues/Peanut Shells/generic waste
    • Sunflower Husk Pellets
    • Dried DDGS
    • Dried Rape Meal
  • Stemtips & Branches
  • Sawdust
  • Slabwood
  • Whole Tree Thinnings
  • Roundwood

Cubes

Bales

Pellets

Chips/Billets

Wood Pellets

11 Tree Species

Chips/as collected

4-6 Yield Class Ranges

Imported as collected

28 Regions UK (road construction intensity

Produced Overseas and Imported

Co-products from biofuel production

Imperial College London – November 13th & 14th 2009

2a land use reference system

*

*

*

*

*

*

* Carbon sequestration gives higher CO2 eq. per tonne

2a. Land-use Reference System
  • For ‘Crops’:
    • 6 Options: Fallow land (combination of fertilized and mown), rotational set aside land & green manure

Imperial College London – November 13th & 14th 2009

2b waste reference system
2b. Waste Reference System
  • For ‘Wastes’
    • Three options
      • Mulching/natural decay – forest residues, waste wood, arboricultural arisings, olive residues
      • Burnt for onsite heat – sawmill residues
      • Landfill – waste wood, arboricultural arisings, olive residues

Imperial College London – November 13th & 14th 2009

slide8

Waste Reference System

Production

Imperial College London – November 13th & 14th 2009

slide9

Waste Reference System: Mulching

*

*

*

*

*

*Overall saving energy compared to reference system:

Collecting, chipping and transport to parks for mulch

Imperial College London – November 13th & 14th 2009

slide10

Waste Reference System: Onsite Heat

*

*

*

*

*

*

*

*

* Higher emissions per tonne – now have to produce heat from natural gas

Imperial College London – November 13th & 14th 2009

slide11

Waste Reference System: Landfill

Emissions from Landfill are highly dependent on degradation rates!

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

* Higher emissions per tonne – where carbon is sequestered in landfill

All situations include energy recovery

* Lower emissions when methane emissions are avoided

per odt biomass
… ‘per ODT biomass’
  • Can depend on many factors
    • Quantifiable things
      • Inputs
      • Yield
      • Moisture Content
      • Material losses
    • Decisions on:
      • Landfill behaviour
      • Landuse
      • Reference system

TSEC Mini Tool is flexible

Imperial College London – November 13th & 14th 2009

tsec mini tool
TSEC-Mini-Tool

(7 Truck Sizes)

Biomass

Road

Rail

Volume-based t-km emissions

Marine

Imperial College London – November 13th & 14th 2009

tsec mini tool14
TSEC-Mini-Tool

Can use fossil fuels or biomass to power each step

Biomass

(stored

-transported)

Wilton 10

Drax

Wood

Chipped

Hammer milled

Dried

Condensed

Miscanthus

Burn!

Burn!

Burn!

Burn!

Chips

Fossil-pellets

Green-pellets

Bales

Imperial College London – November 13th & 14th 2009

ghg benefit of pellets

Include energy Density!

Pellets:

17 GJ/tonne

Chips:

12 GJ/tonne

GHG Benefit of Pellets?

Road Transport

2550 Km 

300 Km

40 Km

Imperial College London – November 13th & 14th 2009

tsec mini tool16
TSEC-Mini-Tool

Biomass

(stored-

transported

-processed

-stored again maybe)

Dedicated Electricity – Wilton 10

Dedicated Heat - Barnsley

Burn!

CHP – Not SHP!

Co-fired with Coal - Drax

94%

92%

90%

Quantify % savings and kg CO2 eq. saved

Imperial College London – November 13th & 14th 2009

conclusions
Conclusions

Biomass looks good

…. But what was the question?

What does TSEC and stakeholders want to know about GHG’s?

Imperial College London – November 13th & 14th 2009

slide19

What now?

TSEC

Mini Model

+ BEAT2

  • Test it
  • OK? Use it!

Answer questions:

  • Run
  • Scenarios:
    • ‘Energy security’- Only UK biomass
    • ‘Cost effectiveness’ – Only cheap biomass
    • ‘Super Carbon-Saving’ – Only low-CO2 biomass
    • ‘Land-limited production’ – Mostly wastes/residues
    • ‘Energy efficiency’- more efficient technology
    • Case Studies – biomass mixes at various scales
    • Yield Scenarios: future crop yields
  • Speculate biomass’ contribution to future GHG savings

Imperial College London – November 13th & 14th 2009

slide20

Thank you!

Imperial College London – November 13th & 14th 2009