planning:summer_comfort
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planning:summer_comfort [2025/07/31 20:36] – jgrovesmith | planning:summer_comfort [2025/09/23 19:08] (current) – [See also] added link to EN articles of AK57 jgrovesmith | ||
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- | Due to global warming, the topic of protection against overheating is becoming increasingly important, especially since high indoor temperatures are not only a question of comfort, but can also be highly detrimental to health. Due to rising external temperatures, | + | Important: |
- | The perception and measurement of [[basics: | + | The perception and measurement of [[basics: |
- | + | ||
- | + | ||
- | For buildings with **[[planning:summer_comfort# | + | |
+ | For buildings with [[planning: | ||
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===== Design principles for a high level of summer comfort ===== | ===== Design principles for a high level of summer comfort ===== | ||
- | [{{ :picopen:summer_comfort_guide_pic.jpg?200| " | + | [{{ :picopen:summer_comfort.jpg?nolink&200| " |
- | **Optimising the building design** to suit local climate conditions and building use has a fundamental impact on the level of thermal comfort achieved in summer and the energy required for active cooling. It also determines how robust and resilient the building is against the risk of overheating during hot spells, and generally rising temperatures. PHPP and designPH are useful planning tools for this optimisation process. | + | Optimising the building design to suit local climate conditions and building use has a fundamental impact on the level of thermal comfort achieved in summer and the energy required for active cooling. It also determines how robust and resilient the building is against the risk of overheating during hot spells, and generally rising temperatures. PHPP and designPH are useful planning tools for this optimisation process. |
- | A temperature increase in a building is ultimately caused by net heat gains. The very first principle for building optimisation and building use through passive cooling measures is therefore to reduce all potential heat sources, e.g. solar gains and internal heat sources. If the temperature rises above the comfortable level, the only effective way to passively dissipate the excess heat is through ventilation at times when the outside temperature is sufficiently low. Click here for a more detailed article on the interrelationships and recommendations for **[[planning: | + | A temperature increase in a building is ultimately caused by net heat gains. The very first principle for building optimisation and building use through passive cooling measures is therefore to reduce all potential heat sources, e.g. solar gains and internal heat sources. If the temperature rises above the comfortable level, the only effective way to passively dissipate the excess heat is through ventilation at times when the outside temperature is sufficiently low. Click here for a more detailed article on the interrelationships and recommendations for [[.: |
- | To support planners in developing a robust summer strategy which will ensure thermal comfort throughout the year, the **[[:planning: | + | To support planners in developing a robust summer strategy which will ensure thermal comfort throughout the year, the **[[.: |
- | The Passipedia article | + | The Passipedia article [[:basics: |
Further reading: | Further reading: | ||
- | * [[planning: | + | * iPHA Webinar: |
- | * [[basics: | + | * [[.: |
- | * The Protocol Volumes of the Research Group for Cost-effective Passive Houses with a focus on summer comfort and cooling contain valuable basic knowledge, specific planning recommendations and practical experience on the subject. See [[planning: | + | * [[: |
+ | * [[:basics: | ||
+ | * [[: | ||
+ | * The Protocol Volumes of the Research Group for Cost-effective Passive Houses with a focus on summer comfort and cooling contain valuable basic knowledge, specific planning recommendations and practical experience on the subject. | ||
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The boundary conditions that are used for the calculations during the design phase may differ from those of the actual building one it is in use, e.g. the actual weather of that particular day or year and the user's interaction witht he building. A risk analysis by means of **stress testing** a design is essential for a robust summer comfort strategy. It provides valuable feedback and a better understanding of the risk factors for overheating and can thus lead to more robust and resilient designs. Stress testing is integrated into the planning tool PHPP version 10 onwards: it shows the calculated frequency of overheating for various scenarios during the planning process. | The boundary conditions that are used for the calculations during the design phase may differ from those of the actual building one it is in use, e.g. the actual weather of that particular day or year and the user's interaction witht he building. A risk analysis by means of **stress testing** a design is essential for a robust summer comfort strategy. It provides valuable feedback and a better understanding of the risk factors for overheating and can thus lead to more robust and resilient designs. Stress testing is integrated into the planning tool PHPP version 10 onwards: it shows the calculated frequency of overheating for various scenarios during the planning process. | ||
- | Further reading: | + | Further reading: [[planning: |
- | Factsheet: | + | Factsheet: [[phi_publications: |
The behaviour of residents or users can have a strong influence on the temperatures inside the building, especially with regard to the use of shading elements and ventilation (especially at night, when it is cooler outside than inside the building). Users are not always sufficiently aware of the interrelationships or external circumstances may prevent them from using the full potential of shaing or night ventilation. In order to prevent misunderstandings, | The behaviour of residents or users can have a strong influence on the temperatures inside the building, especially with regard to the use of shading elements and ventilation (especially at night, when it is cooler outside than inside the building). Users are not always sufficiently aware of the interrelationships or external circumstances may prevent them from using the full potential of shaing or night ventilation. In order to prevent misunderstandings, | ||
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Ongoing global warming is leading to a changing climate worldwide. This affects all buildings, regardless of their efficiency level. Buildings built today will likely be exposed and used in warmer conditions than what we are familiar with today. For future-oriented planning, it is imperative to take the impact of warming climate conditons on summer comfort into consideration. The risk of higher overheating frequencies will increase by the middle of the century and active cooling will probably become necessary in many places where this is not currently the case. Planners and building owners are well advised to take this into account in their design decisions, i.e. to assume warmer summer conditions and implement active cooling form the outset, or at least make plans for simple cooling retrofit measures. | Ongoing global warming is leading to a changing climate worldwide. This affects all buildings, regardless of their efficiency level. Buildings built today will likely be exposed and used in warmer conditions than what we are familiar with today. For future-oriented planning, it is imperative to take the impact of warming climate conditons on summer comfort into consideration. The risk of higher overheating frequencies will increase by the middle of the century and active cooling will probably become necessary in many places where this is not currently the case. Planners and building owners are well advised to take this into account in their design decisions, i.e. to assume warmer summer conditions and implement active cooling form the outset, or at least make plans for simple cooling retrofit measures. | ||
- | Further reading: | + | Further reading: [[basics: |
- | Factsheet: | + | Factsheet: [[phi_publications: |
Tool: [[planning: | Tool: [[planning: | ||
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==== Active cooling ==== | ==== Active cooling ==== | ||
- | Considerations | + | **[[planning: |
- | [[https:// | + | |
- | Practical experience from the first passive house in Darmstadt Kranichstein(German)]] | + | |
- | If a building (or individual rooms) cannot be kept reliably | + | If a building (or individual rooms) cannot be kept cool realibly |
In warm and hot climates, active cooling for a good level of thermal comfort is out of the question ((People are often surprised that Passive House experts have no ' | In warm and hot climates, active cooling for a good level of thermal comfort is out of the question ((People are often surprised that Passive House experts have no ' | ||
- | **Further | + | Further |
- | + | ||
- | * [[: | + | |
- | * [[: | + | |
- | * [[planning: | + | |
- | * [[https:// | + | |
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[{{ : | [{{ : | ||
- | Summer comfort in non-residential buildings | + | Summer comfort in non-residential buildings |
- | * Protocol No. 57: [[https:// | + | * Protocol No. 57: [[https:// |
- | * Protocol No. 41: | + | * Protocol No. 41: |
- | Articles | + | |
+ | |||
+ | Selected articles | ||
* [[planning: | * [[planning: | ||
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* [[planning: | * [[planning: | ||
*[[phi_publications: | *[[phi_publications: | ||
+ | *[[: | ||
+ | *[[: | ||
+ | *[[planning: | ||
+ | |||
+ | |||
+ | ---- | ||
===== See also===== | ===== See also===== | ||
- | * [[basics: | + | [[: |
- | | + | |
- | * Protocol Volume No. 15: [[https:// | + | iPHA Webinar [[: |
- | * Protocol Volume No. 22: [[https:// | + | |
+ | iPHA affiliate literature: [[: | ||
+ | |||
+ | iPHA blog: [[https:// | ||
+ | |||
+ | [[basics: | ||
+ | |||
+ | Relevant volumes of [[:phi_publications# | ||
+ | |||
+ | * Protocol Volume No. 15: [[https:// | ||
+ | * Protocol Volume No. 22: [[https:// | ||
* Protocol Volume No. 31: [[https:// | * Protocol Volume No. 31: [[https:// | ||
* Protocol Volume No. 37: | * Protocol Volume No. 37: | ||
- | * Protocol Volume No. 41: [[https:// | + | * Protocol Volume No. 41: [[https:// |
* Protocol Volume No. 53: [[https:// | * Protocol Volume No. 53: [[https:// | ||
- | * Protocol Volume No. 57: [[https:// | + | * Protocol Volume No. 57: [[https:// |
- | * iPHA blog: [[https://blog.passivehouse-international.org/ | + | |
- | * iPHA affiliate literature: [[: | + | |
- | * iPHA Webinar: [[: | + | |
planning/summer_comfort.1753986999.txt.gz · Last modified: by jgrovesmith