Development of operational guidelines for thermally activated building system according to heating and cooling load characteristics

Lim, Jae-Han; Song, Jin-Hee; Song, Seung-Yeong

doi:10.1016/j.apenergy.2014.03.087

Cited by 36 publications

(17 citation statements)

References 25 publications

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“…This causes thermal discomfort and a demand for heating and cooling energy. Window condensation problems have also often been reported in apartment buildings in the winter [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Thermal Behaviors in Window Systems by Monitoring of Surface Condensation Using Full-Scale Measurements and Simulation Tools

Hong

Kim

2016

Energies

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Abstract:The aim of the present study was to investigate the thermal performance of window systems using full-scale measurements and simulation tools. A chamber was installed on the balcony of an apartment to control the temperatures which can create condensation on the interior surfaces of window systems. The condensation process on the window was carefully scrutinized when outdoor and indoor temperature and indoor relative humidity ranged from −15 • C to −20 • C, 23 • C to 24 • C, and 50% to 65%, respectively. The results of these investigations were analyzed to determine how the moisture is influenced by changing temperatures. It appears that the glass-edge was highly susceptible to the temperature variations and the lowest temperature on the glass edge was caused by the heat transfer through the spacer, between the two glass panels of the window. The results from the simulation used in this study confirm that the thermal performance of window systems can be improved the use of super insulated or thermally broken spacers. If the values of the indoor humidity and temperature are given, then the outdoor temperature when condensation forms can be obtained by using Temperature Difference Ratio (TDR). This methodology can be employed to predict the possible occurrence of condensation.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Thermal Behaviors in Window Systems by Monitoring of Surface Condensation Using Full-Scale Measurements and Simulation Tools

Hong

Kim

2016

Energies

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“…Thus, the TABS can handle only a limited amount of heating and cooling loads in office buildings using self-regulation. Many previous studies attempted to remove the loads with the TABS as much as the expected load handled with the radiant system [13][14][15][16][17][18][19][20]. However, this paper focuses on the proper functioning of TABS.…”

Section: Introductionmentioning

confidence: 99%

Control of Thermally Activated Building System Considering Zone Load Characteristics

Chung

Park²,

Yeo

et al. 2017

Sustainability

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Abstract:The objectives of this study were to investigate the thermally activated building system (TABS) mechanism for appropriate use of the system and to apply the proper concept of TABS for each zone by using different TABS control strategies. In order to examine the TABS mechanism, dynamic simulation with EnergyPlus was used to model the office building with TABS, because the radiant heat exchange characteristics of the TABS according to the time variable was critical. The typical control concept of TABS, self-regulation, was applied in the simulation by setting the supply water temperature as room setpoint temperature. As a result, the advantage of self-regulation can be amplified by utilizing the entire thermal mass of the TABS, which can be executed by customizing to target a specific type of load. Since the large area of the office building may comprise different loads in different zones, the TABS control according to the different zone loads were proposed. By separating the control strategy from zone to zone, the proposed control strategy improved the thermal comfort by 5%, reduced peak heating load by 10%, reduced cooling load by 36%, and decrease the total energy consumption by 13%. This study demonstrated a possible improvement on self-regulation of TABS with separate zone controls.

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“…If the latent load is not removed, the surface temperature may be below the dew point temperature, which can cause damage on the surface from condensation [1]. Moreover, the large specific heat of a thermally activated building system may not react to a large and sudden load.…”

Section: Introductionmentioning

confidence: 99%

“…Several advanced research proposed different methods for designing thermally activated building system. Lim et al and Rijksen et al proposed designing guidelines of the thermally activated building system according to the outdoor air condition [1,2]. Park et al proposed the TABS load-handled ratio to be designed according to the occurrence percentage of the building load [3].…”

Section: Introductionmentioning

confidence: 99%

“…Among the many types of storage systems, a thermally activated building system is an energy-efficient radiant system that uses a concrete structure to store heat. Because the operating temperature can be close to room temperature, it is possible to use renewable energy [1]. e system should be designed with proper thermal performance to maintain the thermal environment of the building.…”

Section: Introductionmentioning

confidence: 99%

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Improved Thermally Activated Building System Design Method Considering Integration of Air Systems

Chung

Lim

2018

Advances in Civil Engineering

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e purpose of the thermally activated building system design is to maintain the thermal comfort of the building indoor environment by securing enough thermal output of the system. For preventing the condensation on the thermally activated building system, the air system is mostly integrated with the thermally activated building system. However, the common design method in the standards only considers the thermal performance of the system itself and cannot reflect the effects of the air system. us, the design process of the thermally activated building system should include the consideration about the latent load and ventilation. In order to reflect the effect of the air system, the amount of sensible load removed by the thermally activated building system and air system should be included in the design process. e sensible load handled by the air system highly depends on the type of the air system and design consideration to prevent the condensation and maintain the indoor air quality. In this study, the air system choosing process was included by simulating and observing the sensible load removed by different types of the air system, and thermal performance adjustment in the design process was proposed.

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Development of operational guidelines for thermally activated building system according to heating and cooling load characteristics

Cited by 36 publications

References 25 publications

Experimental Investigation of Thermal Behaviors in Window Systems by Monitoring of Surface Condensation Using Full-Scale Measurements and Simulation Tools

Experimental Investigation of Thermal Behaviors in Window Systems by Monitoring of Surface Condensation Using Full-Scale Measurements and Simulation Tools

Control of Thermally Activated Building System Considering Zone Load Characteristics

Improved Thermally Activated Building System Design Method Considering Integration of Air Systems

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