Energy and the New Reality, Volume 2: C-Free Energy Supply Chapter 11: Community-integrated Energy Systems with Renewable Energy L. D. Danny Harvey [e-mail]

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Energy and the New Reality, Volume 2C-Free
Energy Supply Chapter 11 Community-integrated
Energy Systems with Renewable Energy L. D.
Danny Harveyharvey_at_geog.utoronto.ca
Publisher Earthscan, UKHomepage
www.earthscan.co.uk/?tabid101808

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The concept of Community-Integrated Energy
Systems was introduced in Volume 1 (Chapter 9).
These systems consist of one or more of

• A network of insulated underground pipes to
  distribute heat from various heat sources to
  where it is needed
• A network of insulated underground pipes to
  distribute cold water from a central chilling
  facility or natural source of cold water to where
  it is needed
• Cogeneration or a central heating plant
• Trigeneration or a central cooling plant
• Seasonal underground storage of heat or coldness

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CIESs facilitate increased use of renewable
energy in several ways

• Through the seasonal storage of solar thermal
  energy (collected during the summer, used during
  the winter)
• By making it easier to use biomass or geothermal
  energy for heating of individual buildings (if a
  central heating plant and heat distribution
  network already exist)
• By providing for flexibility in using
  intermittent electricity sources such as wind
  energy for heating or cooling with heat pumps
  combined with thermal energy storage
• By facilitating the possible eventual transition
  to hydrogen for heating purposes

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Figure 11.1 Types of underground thermal energy
storage (UTES)
Source Schmit et al (2004, Solar Energy 76,
165-174, http//www.sciencedirect.com/science/jour
nal/0038092X)
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Figure 11.2 Different arrangements of pipes in a
borehole heat exchanger
Source Schmit et al (2004, Solar Energy 76,
165-174, http//www.sciencedirect.com/science/jour
nal/0038092X)
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Supplemental Figure Construction of a concrete
seasonal thermal-energy storage tank in
Friedrichshafen, Germany.
Source Fisch et al. (1998, Solar Energy
63355-366, http//www.sciencedirect.com/science/j
ournal/0038092X)
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Supplemental Figure Construction of a
gravel/water pit for seasonal storage of solar
heat, Steinfurt, Germany.
Source Pfiel and Koch (2000, Pfeil, M. and Koch,
H. (2000, Solar Energy 69461-467,
http//www.sciencedirect.com/science/journal/0038
092X)
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Figure 11.3 Components of a solar-assisted
district heating system
Source Pahud (2000, Solar Energy 69, 495-509,
http//www.sciencedirect.com/science/journal/00380
92X)