Experimental study of cooling effects of a passive evaporative cooling wall constructed of porous ceramics with high water soaking-up ability

He, Jia; Hoyano, Akira

doi:10.1016/j.buildenv.2009.07.002

Cited by 91 publications

(50 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This is why urban areas must be planned by implementing, where necessary, proper mitigation strategies. Some of these strategies, partially affecting each other, are: the use of high albedo surfaces [26][27][28][29][30], evaporation from porous surfaces [31,32], evaporation from ground-level water surfaces [33] and roof ponds [34], vegetated surfaces [35], rooftop gardens [36][37][38][39][40], and trees [27,41]. This paper, through the examination of a case study concerning the Cloister of San Pietro in Vincoli (placed right inside the Faculty of Engineering of the Sapienza University of Rome), evaluates how some of the mitigation strategies previously mentioned affect the microclimate and the outdoor thermal comfort.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Different Urban Microclimate Mitigation Strategies through a PMV Analysis

et al. 2015

View full text Add to dashboard Cite

Abstract:Outdoor thermal comfort affects the health of the people and the quality of life in urban areas. This is the reason why in the past few years different mitigation strategies for the microclimate have been studied and examined. These strategies depend on those passive factors characterizing the urban setting that are able to affect the values of local meteorological variables, as the limit surfaces of the urban space (parterre and façades of the buildings). This paper examines the Cloister by Giuliano da Sangallo, which is part of the Faculty of Engineering of Sapienza University of Rome. The case study compares the present configuration of the Cloister with four other configurations characterized by some vegetation and materials with a high albedo by taking into consideration the PMV (Predicted Mean Vote) model. Microclimatic variables are calculated through numerical simulations performed by the ENVI-met software. Such a comparison is performed during a typical summer day. While examining the results it can be noticed how the strategy presenting the best results is the one with some vegetation, whereas the materials with a high albedo improve the microclimate if applied on surfaces characterized by a high sky view factor. OPEN ACCESSSustainability 2015, 7 9013

show abstract

Section: Introductionmentioning

confidence: 99%

Evaluation of Different Urban Microclimate Mitigation Strategies through a PMV Analysis

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Then the finite element recurrence equation of backward difference for temperature field can be obtained: To control the temperature in concrete, pipe cooling are widely used, such as in the structure of nuclear power plants [9]- [10], and in civil building concrete structure for air-conditioning or other purposes [11]- [13]. But the unsteady temperature field including cooling pipe is always a hard problem to simulate.…”

Section: The Principle Of Finite Element Methods For Three Dimensmentioning

confidence: 99%

Inversion and Feedback Research on the Temperature Control and Crack Prevention for Concrete Crane Beam on Rock Wall

Zhang¹,

Shen²

2011

IJIGSP

View full text Add to dashboard Cite

Abstract-Concrete crane beam on a rock wall on a new structure used in underground building has become more common in recent year. But the concrete beam cracking problem always perplexes scientists and engineers. In order to solve this, the construction information inversion and feedback analysis method is applied. A beam section was taken as a prototype experiment. The temperature and construction data was collected to inverse some necessary thermal parameters. According to the characteristics of concrete temperature field, the basic accelerating genetic algorithm was improved. The improved accelerating genetic algorithm has the merits of high precision and fast calculation. With this algorithm, the calculation temperature and measured value are very close, which shows the method is efficiency. Then inversed parameters were applied in the feedback simulation. According to the simulation results, the proper temperature control method was suggested. By this way, the concrete temperature was controlled well and the beams appear no crack in recent two year. The successful application shows that the inversion and feedback analysis of concrete temperature field can reflect the factual performance of concrete and give important direction to engineering construction.Index Terms-inversion, genetic algorithm, feedback analysis, crane beam on rock wall, temperature field

show abstract

“…Ibrahim et al [22] Porous ceramic evaporators (DEC) Experimental Simulation Experimental -Riffat et al [46] He and Hoyano [47] …”

Section: Methodsmentioning

confidence: 99%

“…The high surface temperature on building materials during summer can be reduced by wetting porous materials, which will enable the use of capillary action and accelerate water evaporation [57,58]. This method has been proven to be effective in counteracting the influence of heat islands [47].…”

Section: Ceramicsmentioning

confidence: 99%

Green Material Prospects for Passive Evaporative Cooling Systems: Geopolymers

et al. 2016

View full text Add to dashboard Cite

Passive cooling techniques have been used mostly in countries with hot and arid climates such as Iran, Egypt, and India. However, the use of this important technology has not been seriously considered until a time of energy crisis, and consequently, environmental crisis scenarios, emerge. Scholars have renewed their interest in investigating passive cooling technology, particularly the aspects of new materials, thermal comfort, energy efficiency, new designs, climate, and environmental considerations. This review paper highlights the opportunities to use green materials, such as geopolymers, as evaporative cooling materials with different types of industrial and agricultural waste products as components. Novel ideas for passive cooling design using ancient and nature-inspired concepts are also presented to promote green technology for future applications.

show abstract

Experimental study of cooling effects of a passive evaporative cooling wall constructed of porous ceramics with high water soaking-up ability

Cited by 91 publications

References 9 publications

Evaluation of Different Urban Microclimate Mitigation Strategies through a PMV Analysis

Evaluation of Different Urban Microclimate Mitigation Strategies through a PMV Analysis

Inversion and Feedback Research on the Temperature Control and Crack Prevention for Concrete Crane Beam on Rock Wall

Green Material Prospects for Passive Evaporative Cooling Systems: Geopolymers

Contact Info

Product

Resources

About