VEHICLE NAVIGATION AND TEMPERATURE RISE IN THE CITY

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VEHICLE NAVIGATION AND TEMPERATURE RISE IN THE
CITY

• Prof.Dr.Orhan KUNTAY

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What is urban heat island?

• areas whose temperature are 5-10 oC higher than
  the neighbouring areas

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Ankamall
Türk Traktör Fab.
Real
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Reasons for the temperature rise in a city

1. It depends on climate
2. It is related to energy
3. It is geographical
4. It is morphological
5. It is structural
6. It is related to land use in the city
7. It is related to fuel used in transportation
8. It is related to the orientation of the buildings

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What are the disadvantages of formation of heat
islands?

• It is advantageous during winter
• There is a problem during the summer season

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Research

• In order to determine the surface heat islands in
  Ankara, projections of the Landsat satellite were
  taken for a 10-year period and the heat islands
  which were heated the most at 8.00 a.m. were
  determined .

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Ankamall
Türk Traktör Fab.
Real
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Ankamall
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Initial Results of the Research AnkaMall

• Features of the climate and vehicle traffic
• elevation of the area is lower than other
  locations of the city, highways go by
• Features related to energy
• During the heating and cooling process of a huge
  shopping center, a great amount of energy is
  given outside
• Geographical features
• The area is a valley base. For this reason, CO2
  accumulation is the highest in this location .
• Morphological features
• almost no tree present in the area

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Initial Results of the Research AnkaMall

• Structural features
• outer surfaces of the building are covered with
  reflecting and heat absorbing hard material,
  parked vehicles emit heat to their surroundings
  like an oven
• Features about the usage of the area
• A large parking lot, and a large and closed
  shopping center create enough reasons for an
  increase in temperature .
• Features of fuel used in transportation
• LPGs that have not gone through an inspection
  navigate on the streets
• vehicles navigate in the city without exhaust
  emission audits
• Features about the orientation of the buildings
• It is the most suitable direction to be protected
  from the cold winds during winter

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Turk Tractor Factory
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Turk Tractor Factory

• Climate features and vehicle traffic
• It is located on a valley base. CO2 accumulation
  is high
• Features about energy
• operates three shifts, high levels of energy is
  consumed
• Geographical features
• it is not possible to remove the polluted air and
  the water vapour with the air current
• Morphological features
• nearly no greenery in the area. A large area is
  paved with concrete in order to park the tractors
  .

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Turk Tractor Factory

• Structural features
• roof of the factory covering an area about
  100.000 m2 is covered with metal materials. It
  emits heat to its surroundings.
• Other features about the usage of the area
• The issue to be discussed here is the
  establishment of such a factory in one of the
  green and forest areas of Ankara .
• Features of fuel
• No fuel effect
• Features about the orientation of the island
• It is not possible to make an evaluation of the
  island on this point .

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RESULT

• The research has not been concluded yet. However,
  it is seen that the temperature rise caused by
  the parking of the vehicles is more effective
  than the temperature rise caused by the vehicle
  traffic.
• It can be said that all the streets in Ankara are
  like ovens due to the parked cars.
• Facades of the buildings and roofs are clear to
  be heat keepers
• It is understood that researches about the urban
  heat islands will contribute much to the city
  planning studies.