Contribution to research on ground heat storages as part of building energy systems using RES

Kalús, Daniel; Janík, Peter; Koudelková, Daniela; Mučková, Veronika; Sokol, Martin

doi:10.1016/j.enbuild.2022.112125

Cited by 11 publications

(10 citation statements)

References 18 publications

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“…We have described the description and evaluation of the experimental measurements of the energy roof in paper [1] and of the ground storage tank in paper [2].…”

Section: Breakdown Of the Measurement Methodologymentioning

confidence: 99%

“…The implementation of the experimental house EB2020 was described in detail in papers [1,2], which focused on the description and evaluation of the experimental measurements of the energy roof and the ground heat storage. This section presents basic photo documentation of the construction and implementation of heat sources and energy systems.…”

Section: Project and Implementation Of The Experimental Family House ...mentioning

confidence: 99%

“…), heating, cooling, etc.). Our contribution to ESR and GHS research has already been presented in several papers but most extensively in the papers listed in the literature, such as [1,2].…”

Section: Introductionmentioning

confidence: 99%

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Contribution to Active Thermal Protection Research—Part 2 Verification by Experimental Measurement

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This article is closely related to the oldest article titled Contribution to Active Thermal Protection Research—Part 1 Analysis of Energy Functions by Parametric Study. It is a continuation of research that focuses on verifying the energy potential and functions of so-called active thermal protection (ATP). As mentioned in the first part, the amount of thermal energy consumed for heating buildings is one of the main parameters that determine their future design, especially the technical equipment. The issue of reducing the consumption of this energy is implemented in various ways, such as passive thermal protection, i.e., by increasing the thermal insulation parameters of the individual materials of the building envelope or by optimizing the operation of the technical equipment of the buildings. On the other hand, there are also methods of active thermal protection that aim to reduce heat leakage through nontransparent parts of the building envelope. This methodology is based on the validation of the results of a parametric study of the dynamic thermal resistance (DTR) and the heat fluxes to the interior and exterior from the ATP for the investigated envelope of the experimental house EB2020 made of aerated concrete blocks, presented in the article “Contribution to the research on active thermal protection—Part 1, Analysis of energy functions by the parametric study”, by long-term experimental measurements. The novelty of the research lies in the involvement of variant-peak heat/cooling sources in combination with RES and in creating a new, original way of operating energy systems with the possibility of changing and combining the operating modes of the ATP. We have verified the operation of the experimental house in the energy functions of thermal barrier, heating/cooling with RES, and without RES and ATP. The energy saving when using RES and ATP is approximately 37%. Based on the synthesis and induction of analogous forms of the results of previous research into recommendations for the development of building envelopes with energy-active elements, we present further possible outcomes in the field of ATP, as well as already realized and upcoming prototypes of thermal insulation panels.

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“…We have described the description and evaluation of the experimental measurements of the energy roof in paper [1] and of the ground storage tank in paper [2].…”

Section: Breakdown Of the Measurement Methodologymentioning

confidence: 99%

Section: Project and Implementation Of The Experimental Family House ...mentioning

confidence: 99%

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Contribution to Active Thermal Protection Research—Part 2 Verification by Experimental Measurement

et al. 2023

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“…Kalús et al, (2021) [14]: The study aimed to evaluate TBs in terms of energy demand, economic efficiency, and environmental friendliness by comparing the use of a classic perimeter wall with the required thickness of thermal insulation (that meets the normative requirements for thermal resistance) and a perimeter wall with an integrated TB (significantly eliminating the thermal insulation thickness). The use of a thermal barrier was evaluated using a number of economic indicators.…”

Section: Overview Of Studies Dealing With Active Thermal Protection A...mentioning

confidence: 99%

Contribution to the Research and Development of Innovative Building Components with Embedded Energy-Active Elements

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The research described in this study focuses on the innovation and optimization of building envelope panels with integrated energy-active elements in the thermal barrier function. It is closely related to developing and implementing the prototype prefabricated house IDA I with combined building-energy systems using renewable energy sources. We were inspired by the patented ®ISOMAX panel and system, which we have been researching and innovating for a long time. The thermal barrier has the function of eliminating heat loss/gain through the building envelope. By controlling the heat/cold transfer in the thermal barrier, it is possible to eliminate the thickness of the thermal insulation of the building envelope and thus achieve an equivalent thermal resistance of the building structure that is equal to the standard required value. The technical solution of the ISOMAX panel also brings, besides the use of the thermal barrier function, the function of heat/cold accumulation in the load-bearing part of the building envelope. Our research aimed to design and develop a panel for which the construction would be optimal in terms of thermal barrier operation and heat/cold accumulation. As the production panels in the lost formwork of expanded polystyrene (according to the patented system) proved to be too complicated and time consuming, and often showed shortcomings from a structural point of view, the next goal was to design a new, statically reliable panel construction with integrated energy-active elements and a time-saving, cost-effective, unified production directly in the panel factory. In order to develop and design an innovative panel with integrated energy-active elements, we analyzed the composition of the original panel and designed the composition of the innovative panel. We created mathematical–physical models of both panels and analyzed their energy potential. By induction and an analog form of formation, we designed the innovative panel. Based on the synthesis of the knowledge obtained from the scientific analysis and the transformation of this data, most of the building components and all the panels with integrated energy-active elements were manufactured directly in the prefabrication plant. Subsequently, the prototype of the prefabricated house IDA I was realized. The novelty of our innovative building envelope panel solution lies in the panel’s design, which has a heat loss/gain that is 2.6 times lower compared to the ISOMAX panel.

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“…The novelty of our research lies in the incorporation of variant peak heat sources with RES-based heat/cooling sources (such as solar energy roof, ground source heat/cooling reservoir) and in the creation of an entirely new, original way of operation of heat/cooling sources and energy systems with the possibility of changing and combining the operating modes of active thermal protection (thermal barrier, heating, cooling, etc.). Our contribution to RES research has already been presented in a paper listed in the literature as [1] and to GHS research in a paper in the literature as [2].…”

Section: Introductionmentioning

confidence: 99%

Contribution to Active Thermal Protection Research—Part 1 Analysis of Energy Functions by Parametric Study

et al. 2023

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The thermal energy consumption for heating objects is one of the main parameters deciding their technical and structural solution. Reducing energy consumption is realized in various ways. The most used method is passive thermal protection, that is, increasing the thermal insulation parameters of the envelope constructions and optimizing the operation of the technical equipment of the buildings. There are also methods of active thermal protection to reduce heat leakage through non-transparent parts of the building envelope. Active thermal protection (ATP) is a dynamic process that applies primarily to building structures with integrated energetically active elements that fulfill one or more functions in mutually exclusive operating modes of energy systems and heat sources, such as thermal barriers (TB), large-scale heating/cooling, long-term heat/cool storage, capturing solar energy, and energy from the surroundings or even recovering heat in the cold season or cold in the warm season and other combinations. The research area focuses on analyzing active thermal protection’s energy potential. The methodology is based on a parametric study of dynamic thermal resistance (DTR), and heat flows to the interior and exterior from ATP for the investigated envelope of the experimental house EB2020 made of aerated concrete blocks. Such constructions generally show a consistently high DTR of 11.8 to 30.8 ((m2·K)/W) at a low mean heat transfer temperature of 10 to 16 °C, corresponding to the thermal insulation of 300 to 1000 mm. In the case of ATP storage heating with an average temperature of the heat-carrying substance of 30 °C, the heat flow into the interior of the investigated structure would be only 2.31 W/m2. Therefore, they are only suitable for a thermal barrier and heat/cold accumulation. Based on the synthesis and induction of analogical forms of the results of previous research into recommendations for the design of individual energy functions of ATP for perimeter structures of buildings, we present heat flows to the interior/exterior when changing the material of the layers towards the interior from ATP and describe possible variants of the development of building structures with integrated energetically active elements.

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Contribution to research on ground heat storages as part of building energy systems using RES

Cited by 11 publications

References 18 publications

Contribution to Active Thermal Protection Research—Part 2 Verification by Experimental Measurement

Contribution to Active Thermal Protection Research—Part 2 Verification by Experimental Measurement

Contribution to the Research and Development of Innovative Building Components with Embedded Energy-Active Elements

Contribution to Active Thermal Protection Research—Part 1 Analysis of Energy Functions by Parametric Study

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