F6 THERMAL COMFORT 1 precondition Flashcards
Thermal comfort - how many and which preconditions?
P Thermal Performance
Provide a thermal environment that the majority of building users find acceptable.
Thermal comfort greatly influences our experiences in the places where we live and work and is one of the highest contributing factors influencing overall human satisfaction in buildings impacting individual levels of (4)
Its influence on (3) systems
motivation, alertness, focus, and mood.
The integumentary, endocrine, and respiratory system.
Employees perform on average ?? % poorer in hot conditions and on average $$% poorer in cold conditions
Overly warm and cold indoor spaces are linked to (define different health problems for both 5+2)
15% /14 %
HOT linked to increases in sick building syndrome symptoms, irregular heart rate, respiratory issues, fatigue and negative mood.
COLD linked to increased effort and work towards maintaining proper posture and increased risk for chronic issues related to musculoskeletal health
Mechanically conditioned space will be satisfied with the thermal environment based on six core parameters:
air temperature, humidity, air movement,
mean radiant temperature of surrounding surfaces, metabolic rate and clothing insulation
P1 Thermal performance part 1 (+3 options)
Part 1
Provide Acceptable Thermal Environment
Option 1: Performance verified environmental conditions
(mech.cond. PMV +/-0.5° 90% hours&spaces /
naturally conditioned tpma out 17-26°C
mixed mode-both)
Option 2: Long-term thermal data (T06)
humidity 6months/ PMV / dry temp 21-25 for 90% of hours/ air velocity 0.2 m/s at 1.7 m above the floor.
Option 3: Thermal comfort surveys (T02)
min 2 pts in T02
PMV predicted mean vote- ) model stands among the most recognized thermal comfort models
Prevailing Mean Outdoor Temperature, tpma(out)
Thermal performance P - part 2 (+2 options)
Part 2
Monitor Thermal Parameters
Option 1: Annual testing (dry-bulb temperature, relative humidity, air speed/ 2 per year /PVG
Option 2: Continuous monitoring (T06 Thermal Comfort Monitoring)
Thermal Performance P
Part 1
Provide Acceptable Thermal Environment For Commercial Kitchen Spaces
The following requirement is met: The operative temperature in the kitchen does not exceed ?? °C
The operative temperature in the kitchen does not exceed 27 °C.
Thermal concept- how many and which optimizations
(6)
Feature T02 Verified Thermal Comfort Feature T03 Thermal Zoning Feature T04 Individual Thermal Control Feature T05 Radiant Thermal Comfort Feature T06 Thermal Comfort Monitoring Feature T07 Humidity Control
Thermal concept- how many and which beta features
(2)
Feature T08 Optimization
β Enhanced Operable Windows
Feature T09 Optimization
β Outdoor Thermal Comfort
Feature T02 Optimization
Verified Thermal Comfort
Enhance thermal comfort and promote human productivity, by ensuring that a substantial majority of building users (above 80%) perceive their environment as thermally acceptable
part 1
Part 1
Survey for Thermal Comfort (Max: 3 points)
For All Spaces
regular occupants (less than 20 /80%, entro 45- 15, more 35% of occup) / 2 per year/ 80% (90% 3 pts) appendix sample or c04 / min 6 months post occupancy)
T03 Thermal Zoning
Enhance thermal control of building occupants through the provision of thermal zones.
part 1
Part 1
Provide Thermostat Control (Max: 2 points)
90% occ.space
thermal zones (60mq/10 occupants or 30m/5) accessible manual thermostat &digital interface
positioning of temperature sensors 1 m away
Indoor air temperature can be influenced by a number of factors, including the (7)
building physics and orientation, building location and structure, occupant density, ventilation strategy and mode of operation.
Feature T04 Optimization
Individual Thermal Control
3 parts
Part 1
Provide Personal Cooling Options
(user-adjustable thermostat, desk fan, cooling chair..-without influencing others)
Part 2
Provide Personal Heating Options
(thermostat/blankets/e-heaters+chair)
Part 3
Allow Flexible Dress Code
thermal comfort standard
ASHRAE 55
major secondary factors of thermal comfort
age, sex, health condition, personal thermal adaptation, and thermal history, including climatological origin,
temperament, preferences, social and cultural norms, and seasonal variation