Study of a thermoelectric air duct system assisted by photovoltaic wall for space cooling in tropical climate

Irshad, Kashif; Habib, Khairul; Basrawi, Firdaus; Saha, Bidyut Baran

doi:10.1016/j.energy.2016.10.110

Cited by 65 publications

(23 citation statements)

References 34 publications

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“…The specific performance of these experiences is highly relevant due to the low capacities to be met by the façade integrated systems, ranging from 0.8 to 1.8 kW in the assessed scenarios. The highest registered values [24,[32][33][34][35] are used as a reference of the current limits of the technology for small-scale applications but, evidently, further research is needed to ensure these values under real continuous operation. Each coefficient of performance refers to the main energy input, so they correspond to the thermal and electrical efficiency for solar thermal and solar electric, respectively.…”

Section: Solar Cooling Output (Scool Out ) and Boundary Conditions Fomentioning

confidence: 99%

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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Section: Solar Cooling Output (Scool Out ) and Boundary Conditions Fomentioning

confidence: 99%

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

et al. 2018

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“…Kashif et al developed and studied a thermoelectric air duct system assisted by a photovoltaic wall for space cooling in tropical climates. The coefficient of performance of the system increases from 0.67 to 1.15 and the cooling power increases from 101.34 to 517.24 W, with an increase in input current from 2 A to 6 A [25] . Liu et al studied an active solar thermoelectric radiant wall system, and the results showed that the system can actively control the temperature of the wall [26] .…”

Section: Introductionmentioning

confidence: 99%

Experimental study and performance analysis of solar-driven exhaust air thermoelectric heat pump recovery system

Liu

Zhang

et al. 2019

Energy and Buildings

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a b s t r a c tExhaust air heat recovery is of great significance for building energy conservation. Since passive heat recovery systems use temperature or enthalpy difference between outdoor air and indoor air to drive the system, the temperature of fresh air supply cannot meet indoor requirements and the exhaust heat is not fully recovered. In this study, a solar-driven exhaust air thermoelectric heat pump recovery (SDEATHP) system is tested and evaluated for its ability to recover thermal energy from exhaust air to cool or heat fresh air. An experimental platform was established to test its performance. Results show that the SDEATHP system can obtain higher fresh air supply temperature in winter and lower fresh air supply temperature in summer. The system requires only 3.12 W of power for the fans, and the average relative cooling coefficient in summer and the average relative heating coefficient can reach 50.6 and 57.9, respectively. The optimal operating current and voltage of TE modules and photovoltaic system is analyzed, and then the number and types of electrical connections for the TE modules in SDEATHP system are discussed. The SDEATHP system provides a new method for building energy recovery and fresh air supply.

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“…As seen in Figure 13, the cooling capacity of the TE-AC system improves by implementing the IoT-based smart thermal management system. The reason for this improvement is that the IoT assisted the TE-AC system sensed the indoor and outdoor temperatures and reacted accordingly, rather than the full system operating throughout the day, which was observed in previous experiments [21,27]. The input power to the TEM was given by [30]:…”

Section: Effect On Cooling Capacity and Coefficient Of Performance Ofmentioning

confidence: 99%

“…The investigation and information gathering were directed from 12 August 2018 to 5 September 2018 utilizing the single room chamber of Universiti Teknologi PETRONAS, Perak, Malaysia. The measurements of the test chamber were 2.8 m (width, X) × 2.7 m (length, Y) × 2.5 m (height, Z), as presented in Figure 1, and its thermo-physical properties were displayed in past work [27]. The TE-AC framework is shown in Figure 2.…”

Section: Experimental Test Roommentioning

confidence: 99%

An IoT-Based Thermoelectric Air Management Framework for Smart Building Applications: A Case Study for Tropical Climate

et al. 2020

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This study investigates the performance of the thermoelectric air conditioning (TE-AC) system smartly controlled by the Internet of Things (IoT)-based configuration for real tropical climatic application. Air cooling management was done through thermoelectric coolers, and an Arduino microcontroller with various sensors such as a temperature sensor, simple RF modules, and actuators was used to control the indoor climatic conditions based on outdoor conditions. The result shows that when the input power supply to the IoT-based TE-AC system is increased, the cooling capacity of the framework is also enhanced. Significant power and carbon emission reduction was observed for the IoT-based TE-AC system as compared to the TE-AC system without IoT. The IoT-incorporated system also ensures better microclimatic temperature control. Additionally, the system cooling capacity improves by 14.0%, and the coefficient of performance is increased by 46.3%. Thus, this study provides a smart solution to the two major energy harvesting issues of traditional air conditioners-an increase in energy efficiency by employing a TE-AC system and a further improvement in efficiency by using an IoT-based thermal management system.

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Study of a thermoelectric air duct system assisted by photovoltaic wall for space cooling in tropical climate

Cited by 65 publications

References 34 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

Experimental study and performance analysis of solar-driven exhaust air thermoelectric heat pump recovery system

An IoT-Based Thermoelectric Air Management Framework for Smart Building Applications: A Case Study for Tropical Climate

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