Thermally activated building systems (TABS): Energy efficiency as a function of control strategy, hydronic circuit topology and (cold) generation system

Lehmann, B.; Dorer, Viktor; Gwerder, Markus; Renggli, Franz; Tödtli, J.

doi:10.1016/j.apenergy.2010.08.010

Cited by 96 publications

(36 citation statements)

References 6 publications

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“…operating the system only during the nighttime) or using intermittent operation of the circulation pump. Gwerder et al suggested an intermittent operation with pulse width modulation (PWM) control, considering the prediction uncertainty of heat gains during operation [47], which proved to reduce the pumping energy by 50% more than the continuous pump operation [98]. Olesen et al also demonstrated that the operation time of the TABS can be limited by operating the system only during nighttime or using an intermittent operation for the circulation pump [50].…”

Section: )mentioning

confidence: 99%

Ten questions about radiant heating and cooling systems

Rhee

Olesen²,

Kim

2017

Building and Environment

254

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Section: )mentioning

confidence: 99%

Ten questions about radiant heating and cooling systems

Rhee

Olesen²,

Kim

2017

Building and Environment

254

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“…In addition to the complexity of the tuning task, other factors might influence the quality of control. For example, in high-inertia buildings equipped with heating or cooling systems based on distribution of water, the quality of control is also determined by the hydronic circuit [14], i.e. on the process of optimizing the distribution of water to provide the intended indoor climate at optimum energy efficiency and minimal operating cost: a complex networks of cooperating rules is necessary for any hydronic circuit control to function properly.…”

Section: Introductionmentioning

confidence: 99%

Proactive control for solar energy exploitation: A german high-inertia building case study

et al. 2015

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Abstract-Energy efficient passive designs and constructions have been extensively studied in the last decades as a way to 2 improve the ability of a building to store thermal energy, increase its thermal mass, increase passive insulation and 3 reduce heat losses. However, many studies show that passive thermal designs alone are not enough to fully exploit the 4 potential for energy efficiency in buildings: in fact, harmonizing the active elements for indoor thermal comfort with the 5 passive design of the building can lead to further improvements in both energy efficiency and comfort. These 6 improvements can be achieved via the design of appropriate Building Optimization and Control (BOC) systems, a task 7 which is more complex in high-inertia buildings than in conventional ones. This is because high thermal mass implies a 8 high memory, so that wrong control decisions will have negative repercussions over long time horizons. The design of 9 proactive control strategies with the capability of acting in advance of a future situation, rather than just reacting to 10 current conditions, is of crucial importance for a full exploitation of the capabilities of a high-inertia building. This paper 11 applies a simulation-assisted control methodology to a high-inertia building in Kassel, Germany. A simulation model of 12 the building is used to proactively optimize, using both current and future information about the external weather 13 I. INTRODUCTION 20Motivated by the fact that around half of the energy produced on the planet is used for the daily needs of building systems, 21 and floors are made to store, cage and distribute solar energy in the form of heat in the winter and reject solar heat in the 26 summer; passive cooling with different forms of ventilation and earth coupling; passive day-lighting to most effectively capture 27

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“…The main advantage of self-regulation is that the TABS can provide heating and cooling without considering the load that will occur. However, utilizing only self-regulation can provide limited amount of heat to the room, which will cause discomfort when a large load occurs [12]. Therefore, self-regulation is used with the TABS to handle the minimum expected heating and cooling loads in different zones.…”

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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Thermally activated building systems (TABS): Energy efficiency as a function of control strategy, hydronic circuit topology and (cold) generation system

Cited by 96 publications

References 6 publications

Ten questions about radiant heating and cooling systems

Ten questions about radiant heating and cooling systems

Proactive control for solar energy exploitation: A german high-inertia building case study

Control of Thermally Activated Building System Considering Zone Load Characteristics

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