Ventilated Active Thermoelectric Envelope (VATE): Analysis of its energy performance when integrated in a building

Ibáñez-Puy, María; Martín-Gómez, César; Bermejo-Busto, Javier; Sacristán, José Antonio; Ibañez-Puy, Elia

doi:10.1016/j.enbuild.2017.11.037

Cited by 34 publications

(8 citation statements)

References 32 publications

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“…On the other hand, the façade not only comprises available external surface, but also directly influences indoor comfort. In warm climates, peak solar irradiance in façades usually match peak cooling demands in the adjacent offices, so it makes sense to harvest that radiation to drive a cooling system, while blocking solar heat gains under a climate responsive façade design.Solar cooling façade concepts found in the literature are based either on solar electric processes, using thermoelectric modules [11,12], or solar thermal processes, integrating sorption [13,14] or desiccant cooling [15] technologies. Nonetheless, although they are regarded as relevant experiences, pushing current technical boundaries; they are standalone concepts or prototypes developed in a specific climate.…”

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confidence: 99%

“…Solar cooling façade concepts found in the literature are based either on solar electric processes, using thermoelectric modules [11,12], or solar thermal processes, integrating sorption [13,14] or desiccant cooling [15] technologies. Nonetheless, although they are regarded as relevant experiences, pushing current technical boundaries; they are standalone concepts or prototypes developed in a specific climate.…”

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confidence: 99%

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Feasibility Study of Self-Sufficient Solar Cooling Façade Applications in Different Warm Regions

et al. 2018

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Small-scale systems and integrated concepts are currently being explored to promote the widespread application of solar cooling technologies in buildings. This article seeks to expand application possibilities by exploring the feasibility of solar cooling integrated façades, as decentralized self-sufficient cooling modules on different warm regions. The climate feasibility of solar electric and solar thermal concepts is evaluated based on solar availability and local cooling demands to be met by current technical possibilities. Numerical calculations are employed for the evaluation, considering statistical climate data; cooling demands per orientation from several simulated scenarios; and state-of-the-art efficiency values of solar cooling technologies, from the specialized literature. The main results show that, in general, warm-dry climates and east/west orientations are better suited for solar cooling façade applications, compared to humid regions and north/south orientations. Results from the base scenario show promising potential for solar thermal technologies, reaching a theoretical solar fraction of 100% in several cases. Application possibilities expand when higher solar array area and lower tilt angle on panels are considered, but these imply aesthetical and constructional constraints for façade design. Finally, recommendations are drafted considering prospects for the exploration of suitable technologies for each location, and façade design considerations for the optimization of the solar input per orientation.These systems have been researched and developed, mostly focusing on their performance, but their application in the built environment remains mostly limited to large demonstration projects and pilot experiences [7]. In that regard, several small-scale designs and prototypes are being developed by researchers, in order to promote widespread architectural application of these technologies in buildings, under the concept of solar cooling façades [5]. These integrated concepts seize the economic and functional benefits derived from the integration of decentralised components in the façade, while using the available exposed area for direct and diffuse solar collection. Economic benefits from façade integration refer to the construction cost savings and extra leasable space from avoiding complex distribution systems and large equipment [8,9], and functional advantages range from efficient energy usage by identifying local demands, to increased comfort due to personal control [10]. On the other hand, the façade not only comprises available external surface, but also directly influences indoor comfort. In warm climates, peak solar irradiance in façades usually match peak cooling demands in the adjacent offices, so it makes sense to harvest that radiation to drive a cooling system, while blocking solar heat gains under a climate responsive façade design.Solar cooling façade concepts found in the literature are based either on solar electric processes, using thermoelectric modules [11,12], or solar thermal...

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confidence: 99%

Feasibility Study of Self-Sufficient Solar Cooling Façade Applications in Different Warm Regions

et al. 2018

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“…Thus, it can be noted that the conventional air-conditioning system is more efficient than the THU v1.2 prototype. Moreover, other tests have been published in [45,46], where it is seen that the power consumption has higher values in Peltier systems, which is associated with the behaviour of Peltier in relation with the weather. As shown in Figure 10, the THU version 1.1 system consumes approximately 1.2 kW of power, while the THU version 1.2 system consumes approximately 1 kW.…”

Section: Hvac System 132mentioning

confidence: 97%

Techno-Economic Analysis of a Peltier Heating Unit System Integrated into Ventilated Façade

Salgado-Conrado¹,

Martín-Gómez²,

Puy³

et al. 2018

HVAC System

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This chapter aims to describe the conceptual design and operating mode of an innovative thermoelectric heating unit (THU) prototype in a heating mode. Firstly, the conceptual design of THU system and improvements are described to investigate the effects of design in the thermal performance. Secondly, the THU prototype was compared with a conventional airconditioning system using the typical economic indicators (investment costs, maintenance costs and operational costs). The results indicate that the overall cost of this project was approximately 84,860 Euros, of which 69.27% of the total investment cost are for the engineering costs. By focused on the investment costs of the THU system, the results reveal that the conventional airconditioning system is economically viable than a THU system. The analysis shows that the design has a direct effect on the costs. The maintenance costs show that THU v1.2 prototype is more economically viable in maintenance than the conventional airconditioning system. Likewise, the operational costs show that THU v1.2 had a more stable thermal behaviour than the conventional airconditioning system. Based on the results, the authors concluded that the THU system could be a viable option for a heating room.

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“…This study also reinforces the modularity that the BI-SES systems have been adopting in recent years. In Ibanez-Puy et al [19], a ventilated active thermoelectric envelope component is studied. It focuses on a modular active ventilated façade prototype with a thermoelectric system to be installed in the building envelope and provide a high comfort level.…”

Section: Integrated Solar Thermal Systemsmentioning

confidence: 99%

A literature review on Building Integrated Solar Energy Systems (BI-SES) for façades − photovoltaic, thermal and hybrid systems

Bot

Aelenei

Gomes

et al. 2022

Renew. Energy Environ. Sustain.

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The building façade has a crucial role in acting as the interface between the environment and the indoor ambient, and from an engineering and architecture perspective, in the last years, there has been a growing focus on the strategic development of building façades. In this sense, this work aims to present a literature review for the Building Integrated Solar Energy Systems (BI-SES) for façades, subdivided into three categories: thermal, photovoltaic and hybrid (both thermal and photovoltaic). The methodology used corresponds to a systematic review method. A sample of 75 works was reviewed (16 works on thermal BI-SES, 37 works on photovoltaic BI-SES, 22 works on hybrid BI-SES). This article summarises the works and later classifies them according to the type of study (numerical or experimental), simulation tool, parametric analysis and performance when applied.

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Ventilated Active Thermoelectric Envelope (VATE): Analysis of its energy performance when integrated in a building

Cited by 34 publications

References 32 publications

Feasibility Study of Self-Sufficient Solar Cooling Façade Applications in Different Warm Regions

Feasibility Study of Self-Sufficient Solar Cooling Façade Applications in Different Warm Regions

Techno-Economic Analysis of a Peltier Heating Unit System Integrated into Ventilated Façade

A literature review on Building Integrated Solar Energy Systems (BI-SES) for façades − photovoltaic, thermal and hybrid systems

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