Experimental analysis of atmospheric heat sinks as heat dissipators

Delgado, MCarmen Guerrero; Ramos, José Sánchez; Moreno, María del Carmen Pavón; Ríos, José Antonio Tenorio; Domínguez, Servando Álvarez

doi:10.1016/j.enconman.2020.112550

Cited by 10 publications

(5 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 21 compares the cooling potential obtained by using the falling film configuration on photovoltaic panels and the polypropylene collector. It can be seen that the effect of evaporative-radiative dissipation is identical with this configuration on photovoltaic panels to the results reported by Guerrero et al [57] on a polypropylene sheet. Finally, having determined the layout and type of nozzle for generating the falling film, an experimental system assessment was performed to evaluate its cooling efficiency.…”

supporting

confidence: 87%

“…Figure 21 compares the cooling potential obtained by using the falling film configuration on photovoltaic panels and the polypropylene collector. It can be seen that the effect of evaporative-radiative dissipation is identical with this configuration on photovoltaic panels to the results reported by Guerrero et al [57] on a polypropylene sheet. The section below shows the combined effect of the systems for the natural conditioning of the amphitheatre, and an analysis is conducted of the volume of the storage tank coupled to the second stage of the air treatment unit.…”

supporting

confidence: 87%

See 1 more Smart Citation

Climatic Control of Urban Spaces Using Natural Cooling Techniques to Achieve Outdoor Thermal Comfort

et al. 2022

Self Cite

View full text Add to dashboard Cite

The open spaces of cities have become hostile to citizens due to the high temperatures. Lack of thermal comfort hampers outdoor activities. It is imperative to combat these phenomena to bring life back to the streets and make spaces frequently used in the past more appealing to local citizens. The aim is to mitigate the severity of the outdoor climate to reach comfortable conditions in open spaces. For that, microclimate control based on natural cooling techniques is proposed to recover the habitability of these spaces of the cities. These techniques are characterised via experiments. Demostrando como es posible conseguir and integrated using simulation tools. Following this methodology, it is possible to design, size and define operation strategies for the ideal climate control system according to the type of need. This paper addresses a degraded and unused real space as a case study to demonstrate the feasibility of the methodology used. A system has been designed that stores water cooled at night by using the sky and night air and uses it during the day to produce cold air and cool cover. The experimental results test the efficiency of each solution that has been integrated into the complete system. The system operates every technology to keep the temperature radiant and the air of the occupants cool. For it, falling-film technology cools every night a volume of water below 18 °C and dissipation in a water pond by water sprinkler maintains a pond 10–15 °C below the outside air temperature. Also, results test how it is possible to guarantee thermal comfort conditions (operative temperature below of 28 °C) even when the environment surrounding the conditioned volume is at temperatures above 40 °C, and how the seismic allows maintaining these conditions during the worst summer hours. In conclusion, microclimate control allows for mitigating the severity of the outdoor climate to reach a degree of thermal comfort equivalent to that in enclosed venues.

show abstract

supporting

confidence: 87%

“…Figure 21 compares the cooling potential obtained by using the falling film configuration on photovoltaic panels and the polypropylene collector. It can be seen that the effect of evaporative-radiative dissipation is identical with this configuration on photovoltaic panels to the results reported by Guerrero et al [57] on a polypropylene sheet. The section below shows the combined effect of the systems for the natural conditioning of the amphitheatre, and an analysis is conducted of the volume of the storage tank coupled to the second stage of the air treatment unit.…”

supporting

confidence: 87%

Climatic Control of Urban Spaces Using Natural Cooling Techniques to Achieve Outdoor Thermal Comfort

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…Durante el día, diversos colectores solares captan energía para el funcionamiento de los módulos de refrigeración radiante. Por la noche, se pone en funcionamiento una bomba hidráulica que circula el agua hacia la tecnología Falling-Film, realizándose un enfriamiento evaporativo mediante intercambio radiante con el cielo (Guerrero Delgado, Sánchez Ramos, & Álvarez Domínguez, 2020; Guerrero Delgado, Sánchez Ramos, Pavón Moreno, et al, 2020). Esta energía refrigerativa se almacena en un tanque subterráneo perfectamente aislado.…”

Section: Marquesina Autosuficiente Y Prototipounclassified

Solución radiante para el acondicionamiento térmico de estancias de corta duración

2023

Proceedings From the International Congress on Project Management and Engineering

View full text Add to dashboard Cite

Urban space is a hostile place for people in large cities in southern Europe. Moreover, the use of public transport is reduced during the summer season because of the heat island. These circumstances mean that citizens do not use urban areas for leisure. For this reason, the creation of climatic shelters is essential to improve the thermal comfort of urban occupants. This study proposes the design of an energetically self-sufficient bus stop, to be installed in the city of Seville, to protect its users from the climate. Its energy independence can be achieved through the integration of Falling-Film technology and the addition of radiant cooling modules. Based on the prototyping of a bus shelter, its behaviour is evaluated in a climatic chamber, fully sensorized, with the purpose of studying the efficiency of the systems included. In this way, the results obtained in the experiment focus on the analysis of convective and radiant heat flows under different operating conditions, ensuring that 60% of the total heat flow is due to radiation. Furthermore, thermographic images prove the correct operation of the facility, which reaches comfort conditions in 20 minutes.

show abstract

“…Most of the studies concerning the passive radiative fluid cooling were for the use at nighttime. [ 240–247 ] While the demand for daytime radiative fluid cooling was in fact much larger, pushing the research of the daytime radiative fluid cooling forward. Goldstein et al.…”

Section: Application Of Passive Daytime Radiative Cooling Materialsmentioning

confidence: 99%

Recent Advances in Material Engineering and Applications for Passive Daytime Radiative Cooling

Cao

et al. 2022

Advanced Optical Materials

View full text Add to dashboard Cite

Figure 1. Outline of the current review of PDRC. The inner layer represents the essential factors that dictate the performance of the PDRC emitter, whereas the middle layer includes the representative types of materials for constructing the PDRC emitter, and the outer layer represents various realworld applications of the PDRC emitter. In the middle layer: multilayered inorganic materials (reproduced with permission. [13]

show abstract

Experimental analysis of atmospheric heat sinks as heat dissipators

Cited by 10 publications

References 41 publications

Climatic Control of Urban Spaces Using Natural Cooling Techniques to Achieve Outdoor Thermal Comfort

Climatic Control of Urban Spaces Using Natural Cooling Techniques to Achieve Outdoor Thermal Comfort

Solución radiante para el acondicionamiento térmico de estancias de corta duración

Recent Advances in Material Engineering and Applications for Passive Daytime Radiative Cooling

Contact Info

Product

Resources

About