Thermal performance of traditional and contemporary housing in the cool season of Zambia

Malama, Albert; Sharples, Steve

doi:10.1016/s0360-1323(96)00036-4

Cited by 34 publications

(22 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The findings are similar to the pattern of the results from many previous surveys such as Nicol (1972), Woolard (1980), Sharma and Ali (1986), Malick (1996), Malama (1997), Nicol et al (1994) and Heidari (2000Heidari ( , 2006. At the time of the survey, the majority of the subjects preferred the temperature to stay the same or to be slightly cooler.…”

Section: Summary Of the Results Of The Thermal Comfort Surveysupporting

confidence: 91%

Summer-time thermal comfort in vernacular earth dwellings in Yazd, Iran

Foruzanmehr¹

2012

IJSDES

View full text Add to dashboard Cite

There is widespread assumption that vernacular earth dwellings in hot climates, particularly those in central Iran are climate-responsive and provide thermal comfort in hot periods even without the aid of electro-mechanical cooling systems. The paper describes two surveys undertaken to investigate the provision of comfortable indoor temperatures in vernacular central-courtyard earth dwellings in Yazd in hot seasons. Firstly, a thermal comfort survey established the comfort temperature for the residents of vernacular dwellings during hot summer days in Yazd. Secondly, the diversity of temperatures that could be found within different spaces of typical vernacular dwellings on typical summer days was investigated by measuring and recording the temperature variations. Recorded temperatures were afterwards compared with the comfort temperature (zone) obtained from the thermal comfort survey in order to discover whether indoor temperatures fall inside (or outside) the comfort zone. This showed to what extent and vernacular passively-cooled houses could provide comfortable indoor temperatures.

show abstract

Section: Summary Of the Results Of The Thermal Comfort Surveysupporting

confidence: 91%

Summer-time thermal comfort in vernacular earth dwellings in Yazd, Iran

Foruzanmehr¹

2012

IJSDES

View full text Add to dashboard Cite

show abstract

“…At the time of the survey, the majority of the subjects preferred the temperature to stay the same or to be slightly cooler. The findings were similar to the pattern of the results from many previous surveys such as Nicol (1972), Woolard (1980), Sharma and Ali (1986), Mallick (1996), Malama (1997), Nicol et al (1994) and Heidari (2000Heidari ( , 2006. Good agreement was also found between the findings of this study and other previous field studies in terms of relationships between indoor-air and neutral temperatures.…”

Section: Thermal Comfort and Temperature Variation Surveyssupporting

confidence: 93%

Thermal comfort and practicality: separate winter and summer rooms in Iranian traditional houses

Foruzanmehr

2014

Architectural Science Review

View full text Add to dashboard Cite

Traditional houses in hot dry regions of Iran provide conditions in which the inhabitants could cope with the severe climate. Previous research shows that these vernacular houses work as a complex passive cooling system that modifies the internal climatic conditions. This complex modifying system has various components or sub-systems of which one is the existence of separate seasonal rooms in the house. This study focuses on the use and performance of seasonal rooms. It used a range of different methods including a socio-cultural questionnaire survey, interviews, personal observations and thermal comfort and temperature variation surveys. It shows how these architectural spaces work as climatic elements to provide comfort, and how they are perceived by current users.

show abstract

“…The adaptive comfort theory encompasses various aspects including acclimatization, habituation, expectation, cultural difference, behavioral adjustment and availability of environmental control [7,[19][20][21]. Further compounding the discrepancies are methodological differences or study limitations (sampling protocol, sensor accuracy, clothing and metabolic rate estimation, etc) and inter-individual differences in thermal preferences and expectations [22]. Although these may be a source of error, it is likely that the most significant component of the discrepancies reported in thermal comfort field studies over the past decades arises from adaptive processes.…”

Section: Factors Leading To Discrepancymentioning

confidence: 99%

Analysis of the accuracy on PMV – PPD model using the ASHRAE Global Thermal Comfort Database II

Cheung

Schiavon

Parkinson

et al. 2019

Building and Environment

347

117

View full text Add to dashboard Cite

The predicted mean vote (PMV) and predicted percentage of dissatisfied (PPD) are the most widely used thermal comfort indices. Yet, their performance remains a contested topic. The ASHRAE Global Thermal Comfort Database II, the largest of its kind, was used to evaluate the prediction accuracy of the PMV/PPD model. We focused on: (i) the accuracy of PMV in predicting both observed thermal sensation (OTS) or observed mean vote (OMV) and (ii) comparing the PMV-PPD relationship with binned OTS -observed percentage of unacceptability (OPU). The accuracy of PMV in predicting OTS was only 34%, meaning that the thermal sensation is incorrectly predicted two out of three times. PMV had a mean absolute error of one unit on the thermal sensation scale and its accuracy decreased towards the ends of the thermal sensation scale. The accuracy of PMV was similarly low for air-conditioned, naturally ventilated and mixed-mode buildings. In addition, the PPD was not able to predict the dissatisfaction rate. If the PMV model would perfectly predict thermal sensation, then PPD accuracy is higher close to neutrality but it would overestimate dissatisfaction by approximately 15-25% outside of it. Furthermore, PMV-PPD accuracy varied strongly between ventilation strategies, building types and climate groups. These findings demonstrate the low prediction accuracy of the PMV-PPD model, indicating the need to develop high prediction accuracy thermal comfort models. For demonstration, we developed a simple thermal prediction model just based on air temperature and its accuracy, for this database, was higher than PMV.

show abstract

Thermal performance of traditional and contemporary housing in the cool season of Zambia

Cited by 34 publications

References 4 publications

Summer-time thermal comfort in vernacular earth dwellings in Yazd, Iran

Summer-time thermal comfort in vernacular earth dwellings in Yazd, Iran

Thermal comfort and practicality: separate winter and summer rooms in Iranian traditional houses

Analysis of the accuracy on PMV – PPD model using the ASHRAE Global Thermal Comfort Database II

Contact Info

Product

Resources

About