Toby Green

Toby Green

Leeds, England, United Kingdom
8K followers 500+ connections

About

Co founder and Director of MyCarbon, est. 2018.


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Articles by Toby

  • The Climate Crisis - IPCC 6th Assessment Summary

    The Climate Crisis - IPCC 6th Assessment Summary

    Introduction I really wish that I able to write an article that was going to make everyone have a great day. That was…

    4 Comments
  • I'm Dreaming of a Green Christmas

    I'm Dreaming of a Green Christmas

    When you think of Christmas you probably think of bright lights, glittering snow, the scent of pine, good food…

    9 Comments
  • How Can a World Tour be Sustainable?

    How Can a World Tour be Sustainable?

    Last week popular music band Coldplay announced their "sustainable" world tour. But how can a world tour be…

    11 Comments

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Experience

  • My Carbon Graphic
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    Leeds, United Kingdom

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    Loughborough

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Education

Publications

  • How can carbon offsetting help UK further and higher education institutions achieve net zero emissions?

    COP26 Universities Network

    How can Carbon Offsetting help UK Further and Higher Education Institutions achieve net-zero emissions?

    The EAUC and the COP26 Universities Network provide guidance on offsetting to support the development of further and higher education offsetting policies.

    The COP26 Universities Network are a growing group of more than 50 UK-based universities and research institutes working together to help deliver an ambitious outcome at the UN Climate Change Conference (COP26) in Glasgow in…

    How can Carbon Offsetting help UK Further and Higher Education Institutions achieve net-zero emissions?

    The EAUC and the COP26 Universities Network provide guidance on offsetting to support the development of further and higher education offsetting policies.

    The COP26 Universities Network are a growing group of more than 50 UK-based universities and research institutes working together to help deliver an ambitious outcome at the UN Climate Change Conference (COP26) in Glasgow in November 2021. Climate experts from six leading UK HE institutions contributed to this guidance to support universities and colleges in their journey to reach net-zero.

    Authors of the briefing stress that these institutions have an opportunity to demonstrate leadership in the move towards a net-zero future. Ambitious plans to reduce carbon emissions will need to be accompanied by some offsetting activity.

    As a result of the recommendations from the guidance EAUC are piloting a sector-wide offsetting initiative called Carbon Coalition.

    Key Messages
    - Reducing emissions must always be the priority before considering offsetting as part of a net-zero strategy
    - Institutions should establish robust principles to justify which emissions can and cannot be offset
    - Offset schemes must be carefully assessed and should align with the Sustainable Development Goals
    - Prioritise carbon removal offsets over emission reduction offsets
    - Consider social and biodiversity related impacts
    - A progressive transition to effectively permanent carbon storage needs to be central
    - Emission reduction offsets, in particular, are perceived as problematic by some
    - The Further and Higher Education sector would benefit from forming a coalition - this is being established by the EAUC
    - Standardised reporting across the sector will help track progress towards net-zero
    - Travel emissions, including student flights, should be included in institutional emission reporting
    - Explore potential educational opportunities

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  • An integrated model for solar-driven biochar production

    AIP Conference Proceedings

    This paper outlines the approach taken towards optically and thermally modelling a linear Fresnel solar collector system with laboratory validation. The model is to be used within a unique approach of linking concentrated solar technology with the thermochemical conversion of biomass to be used within rural areas of developing countries. Reactor design and integration strategies will be determined primarily by the amount of concentrated solar energy that can be generated from the concentrating…

    This paper outlines the approach taken towards optically and thermally modelling a linear Fresnel solar collector system with laboratory validation. The model is to be used within a unique approach of linking concentrated solar technology with the thermochemical conversion of biomass to be used within rural areas of developing countries. Reactor design and integration strategies will be determined primarily by the amount of concentrated solar energy that can be generated from the concentrating solar collector. Analysis of the performance of the lab based model will allow scale up for testing by African partners in Uganda, Tanzania and Congo as part of a Royal Society DFID programme grant. The optical model produced via ray tracing code on MatLab, uses data secured from a solar irradiance experiment created at the Centre for Research in Energy and Energy Conservation in Uganda. The validation of the model comes from a computational fluid dynamics simulation produced in Ansys Fluent. Further validation will laboratory solar simulator made from 9 low voltage halogen projection lamps pointing towards 24 mirrors aligned in a linear Fresnel array, focused at a copper pipe.

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  • Energy Calculator for Solar Processing of Biomass with Application to Uganda

    Energies / MDPI

    Rural areas of developing countries often have poor energy infrastructure and so rely on a very local supply. A local energy supply in rural Uganda frequently has problems such as limited accessibility, unreliability, a high expense, harmful to health and deforestation. By carbonizing waste biomass streams, available to those in rural areas of developing countries through a solar resource, it would be possible to create stable, reliable fuels with more consistent calorific values. An energy…

    Rural areas of developing countries often have poor energy infrastructure and so rely on a very local supply. A local energy supply in rural Uganda frequently has problems such as limited accessibility, unreliability, a high expense, harmful to health and deforestation. By carbonizing waste biomass streams, available to those in rural areas of developing countries through a solar resource, it would be possible to create stable, reliable fuels with more consistent calorific values. An energy demand calculator is reported to assess the different energy demands of various thermochemical processes that can be used to create biofuel. The energy demand calculator then relates the energy required to the area of solar collector required for an integrated system. Pyrolysis was shown to require the least amount of energy to process 1 kg of biomass when compared to steam treatment and hydrothermal carbonization (HTC). This was due to the large amount of water required for steam treatment and HTC. A resource assessment of Uganda is reported, to which the energy demand calculator has been applied. Quantitative data are presented for agricultural residues, forestry residues, animal manure and aquatic weeds found within Uganda. In application to rural areas of Uganda, a linear Fresnel HTC integration shows to be the most practical fit. Integration with a low temperature steam treatment would require more solar input for less carbonization due to the energy required to vaporize liquid water.

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  • Resilient minigrids using PV and biofuels

    PVSAT

    The work presented here will contribute to an EPRSC CGRF project, working with partners in Uganda, Republic of Congo, and Tanzania, to provide design tools for minigrids that are low cost, scalable, and resilient to natural hazards. Solar PV and biofuels will often be the primary energy sources, although this will depend on the local resource. Batteries will not have a major role because of their limited lifetime, expense, and susceptibility to theft. Instead, biofuels are used to store energy…

    The work presented here will contribute to an EPRSC CGRF project, working with partners in Uganda, Republic of Congo, and Tanzania, to provide design tools for minigrids that are low cost, scalable, and resilient to natural hazards. Solar PV and biofuels will often be the primary energy sources, although this will depend on the local resource. Batteries will not have a major role because of their limited lifetime, expense, and susceptibility to theft. Instead, biofuels are used to store energy chemically and provide dispatchable generation.

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  • Triplet Irradiance Measurements

    PVSAT

    In this work, we demonstrate that cloud speed and direction can be reliably and accurately determined using a well-spaced triplet of silicon irradiance sensors logged at high frequency. Cross-correlation is used to calculate time delays of cloud edges detected from sensor pairs. Furthermore, a positive correlation between cloud speed and 10 m wind speed is found, with deflection consistent with ground friction and the Coriolis force.

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  • An integrated low carbon energy solution to cooking fuel, tailored to Niger state’s rural population

    E3S Web of Conferences

    Niger State (Nigeria) was selected as a case study of renewable, affordable and user friendly clean energy provision in remote areas of developing countries. Niger state has 80% of its 4.5 million population living in rural agrarian areas with low literacy rates, there is a lack of wind thus eliminating wind as widely available potential power source. Based on the assessment of the local large insolation, the type of agricultural, biomass and husbandry resources, this study selected the design…

    Niger State (Nigeria) was selected as a case study of renewable, affordable and user friendly clean energy provision in remote areas of developing countries. Niger state has 80% of its 4.5 million population living in rural agrarian areas with low literacy rates, there is a lack of wind thus eliminating wind as widely available potential power source. Based on the assessment of the local large insolation, the type of agricultural, biomass and husbandry resources, this study selected the design of anaerobic digestion units processing mostly animal and human waste, and whose heating and power requirement would be entirely provided by solar photovoltaic/thermal to maintain optimum efficiency of the biogas production. The designs was carried out at the scale of up to 15 household demand (community scale). Volume and therefore the production of biogas maybe increased or decreased in the design considered, and local, low cost resilient material were proposed. The proposed system was costed for a community of 24 people, demonstrating the potential for clean and renewable gas production economically.

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Courses

  • ISO 14064-1: Greenhouse Gas Inventories

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  • ISO 14064-2: Greenhouse Gas Projects

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  • ISO 14064-3: Greenhouse Gas Validation & Verification

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  • Life Cycle Analysis

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Languages

  • English

    Native or bilingual proficiency

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