Masters degree project on thermal comfort with radiant heating walls

evds www.ucalgary.ca/evds

Field Study of Thermal Comfort with Radiant Walls

Susana Garcia-San Roman

Supervisor Dr. James A. LoveNovember 22, 2011

SAIT Tower Residence 24,000 m222 stories

445 suites for students715 residents.


QUESTIONS BEFORE THE RESEARCH ...


KEY POINTS- OUTLINE


THERMAL COMFORT: PERSONAL PARAMETERS

QUESTIONNAIRE RESPONDENTS

RESULTS – WINTER SURVEY


THERMAL COMFORT: ENVIRONMENTAL PARAMETERSDRY BULB TEMPERATURE (ºC)

COOLING DESIGN T (26.6ºC)

HEATING DESIGN T (25.7ºC)

19-29ºC

14-24ºC


INDOOR CLIMATE (WINTER): AIR STRATIFICATION

THERMAL COMFORT: ENVIRONMENTAL PARAMETERS


THERMAL COMFORT: ENVIRONMENTAL PARAMETERSINDOOR CLIMATE: RADIANT ASYMMETRY

SURFACE TEMPERATURES (WINTER)

SURFACE TEMPERATURES (SUMMER)

COLD FLOOR

19ºC

12ºC

15ºC 27ºC

44ºC25ºC


OCCUPANT COMFORT ASSESSMENT

LOCAL THERMAL DISCOMFORT

•29% COLD FLOOR•16% HIGH VERT. AIR T DIFFERENCE•RADIANT ASYMMETRY•DRAFT


Predicted percentage dissatisfied: PPD 10 % + 10 %Predicted mean vote: PMV - 0.5 to + 0.5


PREDICTED COMFORT INDICESCALCULATION WITH CODE ASHRAE 55 TC STANDARD FROM 6 PARAMETERS


OCCUPANT COMFORT ASSESSMENT (QUESTIONNAIRE RESPONSES)

THERMAL SENSATION

ACTUAL COMFORT INDICES

VOTES IN THE 3 CENTRAL CATEGORIES 74 % ACTUAL % DISSATISFIED 26 %


COMPARISON INDOOR ENVIRONMENT PARAMETERS WITH COMFORT ZONE (WINTER)

1 CLO1-1.3 METVa 0.2 m/s

COMFORT ZONE (STANDARD 55 ASHRAE 2010)

SATISFIED

DISSATISFIED


THERMAL RESPONSES IN A DYNAMIC ENVIRONMENT


ADAPTIVE MODEL IN THERMAL COMFORT RESEARCH

TC ASSESSMENT, A DYNAMIC ACCUMULATIVE DECISION MAKING PROCESS


ADAPTIVE MODEL IN THERMAL COMFORT RESEARCH


... QUESTIONS AFTER THE RESEARCH


Thank you!

Questions welcome

Masters degree project on thermal comfort with radiant heating walls

Engineering

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