Economic feasibility of passive ambient comfort in Baja California dwellings

The economic evaluation of some passive thermal comfort techniques is performed in order to compare long-term energy savings. A direct comparison is made of vernacular architecture, based on adobe walls, against modern, concrete brick building of low-income family housing in tropical, dry-climate conditions in La Paz, Baja California Sur, Mexico. The expected energy requirements of each type, for the same comfort level, are calculated by means of a calibrated mathematical model, and present value of each option is obtained by conventional means using 10% interest over 15 years. The results indicate that, in cases as those analyzed, the use of vernacular passive techniques is more comfortable and economic than present light buildings by a very wide margin.

[1]  Jorge Hernán Salazar Trujillo.  Solar performance and shadow behaviour in buildings. Case study with computer modelling of a building in Loranca, Spain , 1998 .

[2]  Boris Orel,et al.  Radiative cooling efficiency of white pigmented paints , 1993 .

[3]  Sanjay Kumar,et al.  Experimental investigation of solar chimney assisted bioclimatic architecture , 1998 .

[4]  Constantinos A. Balaras,et al.  The role of thermal mass on the cooling load of buildings. An overview of computational methods , 1996 .

[5]  K. Yang,et al.  AN APPROACH TO BUILDING ENERGY SAVINGS USING THE PMV INDEX , 1997 .

[6]  Standard Ashrae.  Thermal Environmental Conditions for Human Occupancy , 1992 .

[7]  W. Beckman,et al.  Solar Engineering of Thermal Processes , 1985 .

[8]  M. Kleingeld,et al.  The effect of ceiling insulation on indoor comfort , 2000 .

[9]  Evyatar Erell,et al.  Radiative cooling of buildings with flat-plate solar collectors , 2000 .

[10]  Ardeshir Mahdavi,et al.  Implications of indoor climate control for comfort, energy and environment , 1996 .

[11]  Doris Catharine Cornelie Knatz Kowaltowski,et al.  Bioclimatic and vernacular design in urban settlements of Brazil , 1998 .

[12]  Mohan M. Kumaraswamy,et al.  Comparing contributors to time and cost performance in building projects , 1998 .

[13]  S. C. Sekhar,et al.  Higher space temperatures and better thermal comfort — a tropical analysis , 1995 .

[14]  Laurent Serres,et al.  Study of coupled energy saving systems sensitivity factor analysis , 1997 .

[15]  F. Mallick.  Thermal comfort and building design in the tropical climates , 1996 .

[16]  Moncef Krarti,et al.  Effects of standard energy conserving measures on thermal comfort , 1997 .

[17]  Steve Sharples,et al.  Thermal performance of traditional and contemporary housing in the cool season of Zambia , 1997 .

[18]  D. Morillón,et al.  The comfort zone and the oscillation of the driving temperature , 1997 .

[19]  Kyung-Hoi Lee,et al.  Passive design principles and techniques for folk houses in Cheju Island and Ullūng Island of Korea , 1996 .

[20]  Edward Henry Mathews,et al.  Estimating the electricity savings effect of ceiling insulation , 1999 .

[21]  J. M. Cohen,et al.  Mexico City : México , 1965 .