Klimafibel

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	Preface
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	1.	Climate as a Public Interest in Planning and Zoning
	2.	Characteristics and Forms of the Urban Climate
	3.	Energy-Conscious Planning and Zoning
	3.1	Overview
	3.2	The Sun as Energy Source
	3.2.1	Global Radiation
	3.2.2	Solar geometry
	3.2.3	Aids for the Study of Sunlight Conditions
	3.2.4	Daytime Lighting
	3.3	Air Temperature as Influence on Energy-Conscious Planning
	3.3.1	Characteristic Values for Describing Thermal Levels
	3.3.2	Local Climate Criteria
	3.4	Wind as Influence on Energy-Conscious Planning
	3.4.1	Wind Statistics
	3.4.2	Consequences of Wind Statistics
	3.4.3	Increase in Wind Velocity with Height
	4.	Methods of Information Acquisition for Planning (Measurements, Wind Tunnels, Numerical Modelling)
	5.	Climatic and Air Hygiene Maps as Aids for Planning and Zoning (Example: Climate Atlas Federation Region Stuttgart)
	6.	Recommendations for Planning
	7.	Bibliography
	8.	Thematic Websites
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ENERGY-CONSCIOUS PLANNING AND ZONING

3.2 The Sun as Energy Source

The fundamental physical quantity of energy is a measure of the ability to do work. Energy can occur in many various forms, for example as heat energy. It is measured in the same units as physical labor, namely Joules (J) – established by law as the basic unit of energy – or (among others) in Kilowatt-hours (kWh) or Watt-seconds (Ws). The conversion is 1 J = 1 Ws. Work is the energy per unit time, measured in Watts (W) or Joules per second (J/s).

In addition to the following discussion , the SOLAR HANDBOOK from the Ministry of Economy Baden-Württemberg is recommended for more detailed views.

Fig. 3/1: The sun – our most important energy source