Satisfaction and perception of residents with bioclimatic design strategies - A discovery from racial and ethnic perspective

Transcription

1 University of Malaya From the SelectedWorks of Adi Ainurzaman Jamaludin 215 Satisfaction and perception of residents with bioclimatic design strategies - A discovery from racial and ethnic perspective Adi Ainurzaman Jamaludin Available at:

2 USM-ICOSS 215 USM INTERNATIONAL CONFERENCE ON SOCIAL SCIENCES 215 Satisfaction and perception of residents with bioclimatic design strategies A discovery from racial and ethnic perspectives By: Adi Ainurzaman Jamaludin Institute of Biological Sciences Faculty of Science University of Malaya adiainurzaman@um.edu.my

3 Introduction Dayasari RC Bioclimatic Design Residential college building in UM campus with the best practice of bioclimatic design strategies daylighting & natural ventilation (Jamaludin, 214). Integrate the disciplines of human physiology, climatology & building physics (Olgyay, 1963) Help to eliminate negative environmental impact completely via skillful & sensitive designs that encourage better use of building resources & significant operational savings (Yeang, 28). Aim & Objectives To assess the effects of recent adoption of bioclimatic design strategies in influencing the residents comfort level via satisfaction and perception survey. Purpose Justifying the appropriateness of an old building to meet the needs of contemporary life.

4 Building description RIMBA ILMU AREA SELF SERVICE CAR WASH CAFETERIA COURT/ MULTIPURPOSE OPEN AREA SEWAGE TANK BLOCK A FIELD/ MULTIPURPOSE OPEN AREA ADMINISTRATIVE BLOCK/OFFICE, LOBBY, STUDENTS ACTIVITY CENTRE, DINING HALL, KITCHEN COURT/MULTIPURPOSE OPEN AREA BLOCK B COURT/ SPORT CENTRE/ MULTIPURPOSE OPEN AREA PARKING LOTS RIMBA ILMU AREA Introduction STORE A PRINCIPAL UNIT STORE BLOCK C STAFF RESIDENTIAL UNIT SELF LAUNDRY ROOM & COVERED PARKING LOTS PUMP HOUSE PARKING LOTS/ MULTIPURPOSE OPEN AREA BLOCK D PRAYER HALL/SURAU BLOCK E GUARD POST/ MAIN ENTRANCE SEWAGE TANK B B RIMBA ILMU AREA A Site plan Est Form of building : Low-rise Layout : Courtyard arrangement Orientation : North-South Shape : Rectangle Area : 43,185.6 m2 Built up area : 16,971.2 m2 Floor area : 18, m2 Capacity : 847 Density :.47 Room s floor area : m2 Room s volume : m3 Window area : 6.41 m2 WWR :.66 The best practice of bioclimatic design strategies esp. natural ventilation & daylighting

5 Introduction Site elevation A-A TYPICAL ELEVATION Site elevation B-B

6 Introduction Internal courtyard Wall opening inside the room Centre pivot & awning windows Transom/fixed opening Open staircase & corridor area Overhangs along the windows IMPLEMENTATION OF BIOCLIMATIC DESIGN STRATEGIES

7 Introduction Front Front isometric Rear Rear isometric Right Left Top TYPICAL ELEVATION OF RESIDENTIAL BUILDING

8 Introduction Down Up Down Up A CORRIDOR BATHROOM B B Kitchen TOILET WARDEN UNIT Living room BALCONY Section A-A STORE WASH ROOM INTERNAL COURTYARD Bedroom 2 Reading room Toilet Master Bedroom CORRIDOR TYPICAL STUDENT ROOM A Typical floor plan Section B-B TYPICAL FLOOR PLAN & SECTION

9 B A C STUDY LAMP STUDY DESK SWITCH & SOCKET OUTLETS SINGLE BED WARDROBE CEILING LAMP CEILING FAN STUDY DESK STUDY LAMP SWITCH & SOCKET OUTLETS SINGLE BED WARDROBE 38' / ' / 89 77' / ' / ' / 46 52' / 1321 Introduction 118.5' / ' / 4737 A C SWITCH 5' / ' / ' / ' / ' / ' / ' / 3454 B CORRIDOR LAYOUT & SECTION OF TYPICAL ROOM

10 Research Methodology Sample size Questionnaire The questionnaires based on four performance indicator architectural elements, visual comfort, thermal comfort & IAQ, and acoustic comfort (Jamaludin et al., 214). Use a Likert Scale format where each number generally responds to a specific scale. -2: very poor/not at all/very uncomfortable/much decreased/too dark/very dissatisfied/ very noisy; -1: poor/slightly/uncomfortable/decreased/dark/ dissatisfied/noisy; : fair/moderate/neither/no changes; +1: good/ very/ comfortable/ increased/bright/ satisfied/quiet; +2: very good/extremely/very comfortable/much increased/too bright/ very satisfied/ very quiet. ASHRAE 7 point of the thermal sensation scale has been adopted in the further questionnaires of thermal comfort (Singh, Mahapatra and Atreya, 211). Further survey - focusing on the usage pattern of the windows and ceiling fan. n = N / 1 + N (e) 2 where, n is sample size, N is the population size and e is the level of precision. In this study, the level of precision is.5 (95% of the confident level and ±5% margin of error from the overall population) (Yamane, 1967).

11 Result & Discussion 266 responses which relying on 95% confidence level & ±5% margin of error from the overall population. Malay (68%), Chinese (24%), Indian (5%) & Others (3%) The result of satisfaction and perception survey The performance indicators Likert scale / Residents responses (%) Architectural The general room layout elements The residential building layout The adequacy of room in fulfil the needs The overall quality of the residential building The overall comfort level of the room Visual comfort The adequacy of daylighting in the room The overall quality of daylighting in the room Thermal comfort The thermal comfort of the room & IAQ The ventilation & IAQ of the room Acoustic comfort The noise/vibration level in the room The frequency of ceiling fan usage in a day The fan speed is often used The frequency of the windows is kept open in a day The reason for not opening the windows The usage pattern of windows and ceiling fan Residents responses (%) Never Rarely Sometimes Frequently Every time One Two Three Four Five Never Rarely Sometimes Frequently Every time Insect Safety Rain Dust Privacy Monkey Others Thermal sensation votes ASHRAE 7 point sensation scale / Residents responses (%) -3 Cold -2 Cool -1 Slightly cool Neutral +1 Slightly warm +2 Warm +3 Hot

12 Result & Discussion The result of satisfaction and perception survey on architectural elements according to the race and ethnicity The general room layout The residential building layout Very poor -1 Poor Fair +1 Good +2 Very good -2 Very poor -1 Poor Fair +1 Good +2 Very good 1 The adequacy of room in fulfil the needs 1 The overall quality of the residential building Not at all -1 Slightly Moderate +1 Very +2 Extremely -2 Very poor -1 Poor Fair +1 Good +2 Very good

13 Result & Discussion The overall comfort level of the room Very uncomfortable -1 Uncomfortable Neither +1 Comfortable +2 very comfortable

14 Result & Discussion The result of satisfaction and perception survey on visual comfort, thermal comfort & IAQ and acoustic comfort according to the race and ethnicity 1 The adequacy of daylighting in the room 1 The overall quality of daylighting in the room Too dark -1 Dark Neither +1 Bright +2 Too bright -2 Very dissatisfied -1 Dissatisfied Neither +1 Satisfied +2 Very satisfied 1 The thermal comfort of the room 1 The ventilation and IAQ of the room Very poor -1 Poor Fair +1 Good +2 Very good -2 Very poor -1 Poor Fair +1 Good +2 Very good

15 Result & Discussion The noise/vibration level in the room Very noisy -1 Noisy Neither +1 Quiet +2 Very quiet

16 Result & Discussion The usage pattern of windows, ceiling fan and the thermal comfort based on ASHRAE 7 sensation scale according to the racial and ethnic groups The frequency of ceiling fan usage in a day 1% 8% 6% 4% 2% The frequency of the windows is kept open in a day 1% 8% 6% 4% 2% % % Never Rarely Sometimes Frequently Every time Never Rarely Sometimes Frequently Every time 1% The fan speed is often used *The reason for not opening the windows 1% 8% 8% 6% 6% 4% 4% 2% 2% % One Two Three Four Five % Insect Safety Rain Dust Privacy Monkey Others

17 Result & Discussion *Thermal comfort based on ASHRAE 7 sensation scale 1% 8% 6% 4% 2% % Cold Cool Slightly cool Neutral Slightly warm Warm Hot Numerous differences were discovered by comparing the responses among the race and ethnic groups, obviously on thermal comfort and indoor air quality, visual comfort, the usage pattern of windows and ceiling fan, and thermal sensation. The dissimilarities of beliefs, traditions, and ways of life influence the behaviour and thermoregulatory responses (Katsuura, et al., 1993; Chung and Tong, 199; Yang and Wang, 213).

18 Conclusion The majority of the respondents are at a comfort level in all performance indicators of architectural elements, visual comfort, thermal comfort and indoor air quality. Therefore, the bioclimatic design strategies including daylighting and natural ventilation at an old residential building are still appropriate to meet the needs of contemporary life. However, there is still room for improvement, especially on the acoustic comfort. The racial and ethnic composition considerably influence the satisfaction and the perception level of respondents. Therefore, these aspects should be highly considered in implementing the improvement measures to ensure the comfort level of the room. For further research, it is necessary to has greater number of respondents exceeding the minimum number of feedbacks with a 95% of confident level and ±5% margin of error to represent the overall population. The combination of subjective and objective evaluation would give a more comprehensive result for the investigated issues.

19 References Chung, T.M. and Tong, W.C., 199. Thermal comfort study of young Chinese people in Hong Kong. Building and Environment, 25(4), pp Jamaludin, A.A., 214. Performance of bioclimatic design strategies at residential buildings in University of Malaya. Ph. D. University of Malaya. Jamaludin, A.A., Keumala, N., Ariffin, A.R.M. and Hussein, H., 214. Satisfaction and perception of residents towards bioclimatic design strategies: Residential college buildings. Indoor and Built Environment, 23(7), pp Katsuura, T., Tachibana, M.E., Okada, A. and Kikuchi, Y., Comparison of thermoregulatory responses to heat between Japanese Brazilians and Japanese. Journal of Thermal Biology, 18(5-6), pp Olgyay, V., Design with climate: Bioclimatic approach to architectural regionalism. Princeton, NJ: Princeton University Press. Singh, M.K., Mahapatra, S. and Atreya, S.K., 211. Adaptive thermal comfort model for different climatic zones of North-East India. Applied Energy, 88(7), pp Yamane, T., Statistic, an introductory analysis. New York: Harper & Row. Yang, R. and Wang, L., 199. Development of multi-agent system for building energy and comfort management based on occupant behaviors. Energy and Building, 56, pp.1-7. Yeang, K., 28. Ecodesign: A manual for ecological design. London, UK: John Wiley & Son Ltd.

20 Thank you "We shape our buildings; thereafter they shape us." - Winston Churchill -