Heat storage efficiency and effective thermal output: Indicators of thermal response and output of radiant heating and cooling systems

Krajčík, Michal; Šikula, Ondřej

doi:10.1016/j.enbuild.2020.110524

Cited by 40 publications

(12 citation statements)

References 27 publications

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“…Unification of production is also supported by the fact that a large part of residential buildings in Slovakia, Central and Eastern Europe are not yet thermally insulated. By elaborating sample -type documents with laying drawings for individual types, especially panel residential buildings, could significantly contribute to mass production of thermal insulation panels with controlled heat transfer [18][19][20][21][22].…”

Section: Discussionmentioning

confidence: 99%

Energy Balance of a Low Energy House with Building Structures with Active Heat Transfer Control

Kalús

Straková

Kubica

2021

Period. Polytech. Mech. Eng.

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A qualitatively new dimension has been introduced to the issue of building structures for energy-efficient buildings by the system of Active Thermal Insulation (ATI), which is already applied in the construction of such buildings. ATI are embedded pipe systems in the envelope structures of buildings, into which we supply a heat-carrying medium with adjusted temperature, so this constitutes a combined building-energy system. This introduces the concept of an internal energy source understood as an energy system integrated into the zone between the static part and the thermal insulation part of the building structure envelope. Under certain conditions, the ATI can serve as a heat recuperator or as an energy collector for a heat pump application. ATI consists of pipe systems embedded in building structures, in which the medium circulates heated by energy from any heat source. The function of the system is to reduce or eliminate heat losses through non-transparent structures in the winter and at the same time to reduce or eliminate heat gains in the summer. It is especially recommended to apply heat sources using renewable energy sources due to the required low temperatures of the heating medium and thus shorten the heating period in the building. Also recommended is to apply ATI for the use of waste heat. Buildings with a given system show low energy consumption and therefore meet the requirements of Directive no. 2018/844/EU, according to which, from 01.01.2021, all new buildings for housing and civic amenities should have energy needs close to zero.

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Section: Discussionmentioning

confidence: 99%

Energy Balance of a Low Energy House with Building Structures with Active Heat Transfer Control

Kalús

Straková

Kubica

2021

Period. Polytech. Mech. Eng.

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“…This problem was discussed in detail in [108]. To assess thermal performance of TABS different methods and indicators can be used [109,110]. But from the point of view of a building's owner, administrator or user the most important is energy consumption required to maintain certain level of indoor comfort.…”

Section: Thermal Performance Of the Tabsmentioning

confidence: 99%

Selected Aspects of Indoor Climate in a Passive Office Building with a Thermally Activated Building System: A Case Study from Poland

Michalak

2021

Energies

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Modern buildings with new heating, ventilation and air conditioning (HVAC) systems offer possibility to fit parameters of the indoor environment to the occupants’ requirements. The present paper describes the results of measurements performed in an office room in the first Polish passive commercial office building during four months of normal operation. They were used to calculate parameters describing thermal comfort: vertical air temperature profile, floor surface temperature, predicted mean vote (PMV) and predicted percent of dissatisfied (PPD). Obtained results confirmed good thermal conditions in the analysed room. The average temperature of the floor’s surface varied from 20.6 °C to 26.2 °C. The average vertical air temperature, calculated for working days, was from 22.5 °C to 23.1 °C. The temperature difference between the floor and 5 cm below the ceiling was from −0.9 °C to 6.3 °C. The PMV index varied from 0.52 to 1.50 indicating ‘slightly warm’ sensation, in spite of ‘neutral’ reported by employees. Also measured cooling and heating energy consumption was presented. The performed measurements confirmed the ability of thermally activated building system (TABS) to keep good thermal conditions.

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“…Verification of the numerical solution was performed for stationary and non-stationary solutions by comparison with CalA 4.0 software [11] (verified according to EN ISO 1021 and ISO 11855 [13]) or software ANSYS Fluent [12] in the following cases.…”

Section: Verificationmentioning

confidence: 99%

Energy-Pile Model Verification

Šikula¹,

Slávik²,

Eliáš³

et al. 2020

Proceedings of the 51st International HVAC&R Congress and Exhibition

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Equipping the foundation piles with a liquid circuit pipeline makes it possible to use the advantageous ther-mal capacity of the soil for heating and cooling buildings at low cost. The energy performance of the energy-pile in a soil is a transient phenomenon dependent on many parameters, which could be investigate by a computational model. The contribution deals with the description and verification of a new numerical computational software based on a simplified 2D and 2D rotational symmetrical heat conduction model being developed for energy-piles modeling.

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Heat storage efficiency and effective thermal output: Indicators of thermal response and output of radiant heating and cooling systems

Cited by 40 publications

References 27 publications

Energy Balance of a Low Energy House with Building Structures with Active Heat Transfer Control

Energy Balance of a Low Energy House with Building Structures with Active Heat Transfer Control

Selected Aspects of Indoor Climate in a Passive Office Building with a Thermally Activated Building System: A Case Study from Poland

Energy-Pile Model Verification

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