Effectiveness of indirect evaporative cooling and thermal mass in a hot arid climate

2010 ◽  
Vol 45 (6) ◽  
pp. 1422-1433 ◽  
Author(s):  
Eduardo Krüger ◽  
Eduardo González Cruz ◽  
Baruch Givoni
Keyword(s):  
Evaporative Cooling ◽  
Arid Climate ◽  
Thermal Mass ◽  
Hot Arid Climate ◽  
Indirect Evaporative Cooling

Evaluating the effectiveness of outdoor evaporative cooling in a hot, arid climate

2019 ◽  
Vol 150 ◽  
pp. 281-288 ◽  
Author(s):  
Jay Dhariwal ◽  
Prajowal Manandhar ◽  
Lindita Bande ◽  
Prashanth Marpu ◽  
Peter Armstrong ◽  
...  
Keyword(s):  
Evaporative Cooling ◽  
Arid Climate ◽  
Hot Arid Climate

scholarly journals Application of indirect evaporative cooling strategies for a warm-humid climate

2021 ◽  
Vol 2042 (1) ◽  
pp. 012098
Author(s):  
José Roberto García Chávez ◽  
Anaís Carrillo Salas ◽  
Karina A García Pardo
Keyword(s):  
Energy Consumption ◽  
Air Conditioning ◽  
Evaporative Cooling ◽  
Maximum Temperature ◽  
Passive Cooling ◽  
Thermal Mass ◽  
Humid Climate ◽  
Cooling Strategies ◽  
The Mean ◽  
Indirect Evaporative Cooling

Abstract Energy consumption in buildings for air conditioning has augmented worldwide by the escalation in global warming. The application of passive cooling is a promising approach to mitigate this situation. The aim of this research was to assess and characterize the performance of indirect evaporative cooling strategies combined with other passive cooling techniques, applied in experimental modules, aimed at providing hygrothermal comfort. Results showed that the investigated strategies presented lower temperatures than the external conditions and the control module. The alternative that combined indirect evaporative cooling with thermal mass, solar protection, and night radiative cooling was the most promising, with a temperature reduction of 4.2 K, relative to the mean exterior temperature, and a decrease of 8.3 K of its maximum temperature relative to the maximum exterior temperature. An additional strategy was implemented in this alternative using a phase change material, that further reduced its temperature by 6.3 K, relative to the mean exterior temperature and a reduction of 11.5 K of its maximum temperature compared to the maximum exterior temperature. It is expected that these findings are applicable in actual buildings in warm-humid regions to reduce energy consumption for air conditioning, whilst improving hygrothermal comfort and health of occupants.

scholarly journals CFD EVALUATION OF THE POTTERY WATER WALL IN A HOT ARID CLIMATE OF LUXOR, EGYPT

2014 ◽  
Vol 9 (4) ◽  
pp. 175-189 ◽  
Author(s):  
Moustafa Anwar Moustafa ◽  
Srazali Aripin
Keyword(s):  
Thermal Comfort ◽  
Cfd Simulation ◽  
Porous Ceramic ◽  
Evaporative Cooling ◽  
Climatic Conditions ◽  
Arid Climate ◽  
Passive System ◽  
Water Wall ◽  
Hot Arid Climate ◽  
Cooling Ability

This paper aims to evaluate the Pottery Water Wall in a hot arid climate using CFD simulation. The Pottery Water Wall is a passive system and an upgrade to the Water Wall. The Pottery Water Wall is a combination of a Water Wall and Porous Ceramic Pipes for evaporative cooling. First, the study will evaluate the efficiency of the Pottery Water Wall in cooling and heating in the most extreme climatic conditions of winter and summer in Luxor, Egypt. This study will aid determining the ability of the Pottery Water Wall to cool and heat buildings and its ability to achieve thermal comfort. The study found that the Pottery Water Wall's cooling ability ranges between 4°C to 10°C, while its heating ability ranges between 4°C to 15°C. The Pottery Water Wall achieved thermal comfort for 62.5% of a day resembling extreme summer and achieved thermal comfort 62.5% of a day resembling extreme winter. In conclusion, the Pottery Water Wall can reduce cooling and heating demand by 88% at the extreme climatic conditions of Luxor, Egypt.

Recommended angle of a modular dynamic façade in hot-arid climate: daylighting and energy simulation

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Seyedeh Samaneh Golzan ◽  
Mina Pouyanmehr ◽  
Hassan Sadeghi Naeini
Keyword(s):  
Energy Consumption ◽  
Energy Efficient ◽  
Energy Performance ◽  
Arid Climate ◽  
Visual Comfort ◽  
Building Envelopes ◽  
Content Type ◽  
Optimum Angle ◽  
Energy Efficient Buildings ◽  
Hot Arid Climate

PurposeThe modular dynamic façade (MDF) concept could be an approach in a comfort-centric design through proper integration with energy-efficient buildings. This study focuses on obtaining and/or calculating an efficient angle of the MDF, which would lead to the optimum performance in daylight availability and energy consumption in a single south-faced official space located in the hot-arid climate of Yazd, Iran.Design/methodology/approachThe methodology consists of three fundamental parts: (1) based on previous related studies, a diamond-based dynamic skin façade was applied to a south-faced office building in a hot-arid climate; (2) the daylighting and energy performance of the model were simulated annually; and (3) the data obtained from the simulation were compared to reach the optimum angle of the MDF.FindingsThe results showed that when the angle of the MDF openings was set at 30°, it could decrease energy consumption by 41.32% annually, while daylight simulation pointed that the space experienced the minimum possible glare at this angle. Therefore, the angle of 30° was established as the optimum angle, which could be the basis for future investment in responsive building envelopes.Originality/valueThis angular study simultaneously assesses the daylight availability, visual comfort and energy consumption on a MDF in a hot-arid climate.

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