10 Questions
What is the maximum allowed floor temperature in winter according to the additional requirement n° 4?
10°C
In case of cool/warm wall risk, what is the maximum allowed plane radiant temperature asymmetry in summer?
23°C
What is the category with a PPD % of less than 6% and a radiant asymmetry of less than 5%?
A
What is the maximum allowed high radiant temperature asymmetry in winter according to the additional requirement n° 4?
5%
What is the local discomfort factor related to air temperature?
High vertical air temperature difference
What is the category with a PPD % of less than 15% and a radiant asymmetry of less than 10%?
C
What is the maximum allowed high vertical air temperature difference in winter according to the additional requirement n° 4?
Not specified
What is the significance of 35°C in the context of indoor environmental quality?
Maximum allowed temperature in summer
What is the purpose of the additional requirement n° 4?
To ensure indoor environmental quality
What is the category with a PPD % of less than 10% and a radiant asymmetry of less than 5%?
B
Study Notes
Local Discomfort
- High vertical air temperature difference, floor temperature, draught, and high radiant temperature asymmetry are types of local discomfort.
Additional Requirement 1: Vertical Air Temperature Difference
- The vertical air temperature difference between head and ankles should be:
- 3°C for category B
- 2.1°C for category A
- Categories and corresponding PPD% and PD (vertical Dt) are:
- A: < 6% and < 3%
- B: < 10% and < 5%
- C: < 15% and < 10%
Additional Requirement 2: Floor Temperature
- The floor temperature should be between 19°C and 26°C.
- Specific temperatures are:
- 20°C in winter
- 26°C in summer
- Categories and corresponding PPD% and PD (floor temp.) are:
- A: < 6% and < 10%
- B: < 10% and < 10%
- C: < 15% and < 15%
Additional Requirement 3: Draught Rate
- The Draught Rate depends on:
- Air temperature
- Mean air velocity
- Turbulence intensity
- Categories and corresponding PPD% and PD (DR) are:
- A: < 6% and < 15%
- B: < 10% and < 20%
- C: < 15% and < 25%
- UNI 10339 Standard requires:
- va,max,winter ≤ 0.15 m/s
- va,max,summer ≤ 0.25 m/s
Additional Requirement 4: Radiant Temperature Asymmetry
- The plane radiant temperature asymmetry should be less than:
- 10°C in winter
- 23°C in summer
- Categories and corresponding PPD% and PD (Radiant asymmetry) are:
- A: < 6% and < 5%
- B: < 10% and < 5%
- C: < 15% and < 10%
This quiz covers the practical aspects of thermal comfort in building design, including local discomfort and indoor environmental quality. It is part of the Energy Performance Design and Indoor Environmental Quality course at the Politecnico di Torino.
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