Optimization of the Installation of an Earth-to-Air Heat Exchanger and Detailed Design of a Dedicated Experimental Set-Up

Carlucci, Salvatore; Cattarin, Giulio; Pagliano, Lorenzo; Pietrobon, Marco

doi:10.4028/www.scientific.net/amm.501-504.2158

Cited by 11 publications

(4 citation statements)

References 5 publications

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“…The exhaust air is extracted from the bathrooms and the kitchen in order to remove the internal pollutants. The EAHE has been designed considering the geometric limits of the lot and the soil type [6,42] and it can be excluded from the ventilation system by means of a by-pass duct, if required, according to the chosen control strategy and the combination of weather-soil-building conditions. Hygrothermal conditions of the air inside the EAHE, the ventilation ducts, the conditioned spaces and of the outdoor environment are monitored by means of sensors as showed in Fig.…”

Section: Case Study -Building Descriptionmentioning

confidence: 99%

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Yearly operational performance of a nZEB in the Mediterranean climate

Causone

Tatti

Pietrobon

et al. 2019

Energy and Buildings

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Over the last decades, the reduction of the energy use in the building sector has become a topic of major investigation and policy development worldwide. Guidelines have been defined to drive governments and building construction stakeholders towards the retrofit of the existing building stock and to the construction of new highperformance buildings. However, availability of operational data is often limited, especially when it comes to high performance buildings in warm climates, although it is essential to define design approaches targeted to energy efficiency, to design smart energy grids and demand-response oriented energy programs. Buildings, such as living laboratories, may offer opportunities to implement and develop energy databases, to provide benchmarks and to study occupant behaviour under different operational conditions. The paper investigates the energy and thermal comfort performance of a residential building in the Mediterranean climate. The building, certified as Passivhaus and equipped with an advanced monitoring system, allows to test different control strategies, to study occupant behaviour and to provide real time operational data. In particular, the data analysis showed a positive energy balance on yearly basis, i.e. an energy use of 59.7 kWh/m 2 net/year vs. an on-site energy generation of 76.0 kWh/m 2 net/year. The energy breakdown highlighted, that energy uses related to user behaviour and comfort requests account for about 72 % of the total energy use, confirming that occupant behaviour is one of the major drivers of the operational energy use (and the related services) in high performance buildings.

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Section: Case Study -Building Descriptionmentioning

confidence: 99%

“…The system is balanced and does not include additional motorized dampers for regulating the air flow in the rooms. For major details on the EAHE, refer to Carlucci et al [6,42]. The outdoor window surfaces are protected by motorized solar shading systems, which can be controlled manually or through an automatic system.…”

Section: Case Study -Building Descriptionmentioning

confidence: 99%

Yearly operational performance of a nZEB in the Mediterranean climate

Causone

Tatti

Pietrobon

et al. 2019

Energy and Buildings

Self Cite

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“…A single-family zero energy building located in the municipality of Mascalucia (Catania, Italy) will soon be monitored in Mediterranean climate under real occupancy conditions [86]. The building relies in summer on passive cooling strategies (night ventilation, air to earth heat exchanger coupled to the mechanical ventilation system) and produces locally renewable energy by means of photovoltaic modules and a thermal solar system ( [86][87][88]). The building automatic control system allows to monitor and evaluate different strategies for the adjustment of solar protection and mechanical ventilation, considering the dynamic effects of heat storage in building components.…”

Section: Outdoor Real-scale Facilitiesmentioning

confidence: 99%

Outdoor test cells for building envelope experimental characterisation – A literature review

Cattarin

Causone

Kindinis³

et al. 2016

Renewable and Sustainable Energy Reviews

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In the past decades the construction sector experienced the diffusion of a wide variety of complex building envelope components and passive elements and strategies, characterized by a dynamic response to the climatic parameters. Many of these components have been claimed to contribute to reducing building energy use and improving occupants' comfort. These kind of envelope elements need nevertheless to be tested under laboratory and real dynamic weather conditions in order to characterise, and possibly to model, their behaviour and their effectiveness both in terms of energy saving and indoor environmental quality. Both indoor laboratories and outdoor test cells have been developed in order to tackle the challenging issue of experimentally characterising innovative envelope elements. However, not always the experimental methodologies are fully and explicitly described in the available literature, and they are rarely compared to other types of experimental procedures. The aim of the present paper is to describe and review recent state of the art technologies for outdoor test cells. The paper starts with a short introduction on potentialities and limitations of outdoor facilities with respect to indoor laboratories and real buildings field tests, and it continues with a detailed classification and description of the most relevant outdoor test cells developed in recent years.

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“…They developed two models named deterministic and intelligent for evaluating the cooling or heating potential of the system. Carlucci et al [13] installed an experimental setup of the EATHE system in a rural area. They emphasize the monitoring system through which the various information would be collected, and they also focus on their study regarding the selection of the type of soil, materials, layout, and sizing of the system.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Earth Air Tube Heat Exchanger for Cooling Application Using Taguchi Technique

Ahmad¹,

Prakash²

2020

IJHT

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Earth air tube heat exchanger (EATHE) is one of the passive technologies which utilize the earth stored heat (renewable energy) for heating/cooling the buildings. EATHE releases heat to earth for cooling space in summer, making the earth a heat sink and extracts earth-stored energy for heating space in winter and makes the earth a heat source. This paper optimizes the Length of the ground heat exchanger and overall heat transfer coefficient of earth air heat exchanger using the Taguchi technique for cooling application. For this purpose, we select six factors such as installation depth of Pipe (A), Pipe's inner diameter (B), Thermal conductivity of pipe material (C), Inlet air temperature (D), Outlet air temperature (E), Inlet air velocity (F). All these factors are taken at three levels, and we select an L27 orthogonal array for experimental runs. The ground heat exchanger's Length and the overall heat transfer coefficient were then calculated for each experimental run. In the Taguchi method, we find the signal to noise ratio for an optimal combination of all six factors and ANOVA to find the order of influencing parameters and their percentage contributions for both the objective parameters. According to our results, the best combination for all the six factors for ground heat exchanger length and overall heat transfer coefficient were A1B1C3D1E3F1 and A2B3C2D3E1F3, respectively. The highest and lowest influencing factors for ground heat exchanger length were the pipe's inner diameter and the pipe's installation depth with their contribution factors of 69.12 and 0.32%, respectively. In contrast, the highest and lowest influencing factors for the overall heat transfer coefficient were the pipe's inner diameter and thermal conductivity of pipe material with their contribution factors of 75.97and 0%, respectively. Hence the order of influence of all the six factors for both the objective parameters was BEFDCA.

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Optimization of the Installation of an Earth-to-Air Heat Exchanger and Detailed Design of a Dedicated Experimental Set-Up

Cited by 11 publications

References 5 publications

Yearly operational performance of a nZEB in the Mediterranean climate

Yearly operational performance of a nZEB in the Mediterranean climate

Outdoor test cells for building envelope experimental characterisation – A literature review

Optimization of Earth Air Tube Heat Exchanger for Cooling Application Using Taguchi Technique

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