Heat

This page is of documents by Gordon Taylor

2018-10-10 Decarbonising the Heat Sector

London Heat Map - click for full size image
London Heat Map

Options for low-carbon space and water heating include:
• Low-carbon Hydrogen replacing natural gas in the gas network.
• Individual Electric Heat Pumps using renewable electricity.
• District Heating (DH) with large Combined Heat and Power (CHP) plants and renewable heat.

Low-carbon Hydrogen and Electricity even for Heat Pumps are still poor exergy matches for space and water heating.
Modern District Heating networks have an annual average water flow temperature of about 70o C.
So by the Second Law of Thermodynamics, they give the best possible exergy match to space and water heat loads.
Compared with current gas boilers, large CHP plants give large savings in fuel consumption and CO2 emissions for heat.
They can be Combined Cycle, fuelled with gas or biomethane, or Steam Cycle, fuelled with Municipal Waste or Biomass.

Only District Heating can harness low-carbon renewable heat sources, such as solar and deep geothermal heat, as well as excess renewable electricity.

Unlike gas boilers and electric heat pumps, District Heating enables the central CHP and renewable heat plant to be halved in size, due to the Diversity of the individual heat loads.

Copenhagen, using District Heating with heat from large Combined Heat and Power plants and renewable sources, is on track to be zero-carbon by 2025.

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2017-04-12 Cutting Heating Bills: Efficiency, Solar and Insulation

Daily Heat Flows vs Outside Temperature - click for full size image
Daily Heat Flows vs Outside Temperature
• Measurements and Data Logging
• Design for High Boiler Efficiency
• Boiler Performance and Efficiency
• House Heat Loss and Solar Gains
• Heat Loss Reduction with Insulation
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2015-11-17 The Real Merits of Large CHP-DH

Large CHP-DH v Heat Pumps - click for full size image
Large CHP-DH v Heat Pumps
Why Combined Heat and Power ?
Electric Heat Pumps
Large CHP-District Heating
The Importance of CHP Unit Size
Large CHP-DH is best for near-zero-carbon heat

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2012-05-25 Condensing Boiler with Annual Efficiency of 96%

Gas Efficiency v DHW per day - click for full size image
Gas Efficiency v DHW per day
How is it Done ?
Low Boiler Return Temperature
Effective Radiators
Making Measurements
Gas Efficiency vs Domestic Hot Water per day
But condensing boilers are nothing like enough
The true merit of heat from Large CHP plants
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2011-08-15 Measuring the Heat Losses and Solar Gains of Buildings

Before the Solar World Congress 2011 in Kassel, Germany, I submitted the Abstract of a paper: 'Measuring the Heat Losses and Solar Gains of Buildings via a Novel Analysis of the Data'.
This was accepted for oral presentation.
To complete the paper, I had to process three years' data and subject it to my novel analysis. However, this went well and I was very pleased with the results.

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2011-06-09 Evidence for the Energy Bill - the Green Deal

I submitted the pdf file in response to the The Green Deal and Energy Company Obligation, Consultation Document.
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2008-04-14 Response on Domestic Heating etc

I submitted a PDF file in response to the UK Government Market Transformation Programme Domestic Heating and Hot Water Consultation.
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2008-03-28 Response to the Heat Call for Evidence

I submitted PDF and supporting Excel files in resonse to the UK Government Heat Call for Evidence in Buildings and Industry.
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2008-02-18 Carbon Savings in the Buildings Sector

The on-site generation of electricity and heat from renewables – often called microgeneration - has been proposed in the U.K. for saving carbon – reducing carbon emissions – in the buildings sector.

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1974 - 2000 Energy-saving measures

Since buying my own home, I have applied a large number of energy-saving measures.
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