Experimental study on the cooling capacity of a radiant cooled ceiling system

Chicote, Manuel Andrés; Tejero‐González, Ana; Gómez, Eloy Velasco; Martı́nez, Francisco Javier Rey

doi:10.1016/j.enbuild.2012.07.043

Cited by 78 publications

(31 citation statements)

References 17 publications

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“…Jeong and Mumma studied the benefits of such a system, and demonstrated that the system reduced energy usage by 42% compared to a standard VAV system [9] and also studied the cooling capacity of metal ceiling panels similar to what we implemented in the BubbleZERO [11]. Also there have been detailed experimental studies of the heat transfer from radiant panels into building spaces [12,13].…”

Section: High Temperature Radiant Coolingmentioning

confidence: 99%

BubbleZERO—Design, Construction and Operation of a Transportable Research Laboratory for Low Exergy Building System Evaluation in the Tropics

et al. 2013

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Abstract:We present the design, construction and operation of a novel building systems laboratory, the BubbleZERO-Zero Emission Research Operation. Our objective was to design a space to evaluate the performance of Swiss-developed low exergy building systems in the tropical climate of Singapore using an integrated design approach. The method we employed for evaluation in the tropics was to design and build a test bed out of the shipping containers that transported the prototype low exergy systems from Switzerland to Singapore. This approach resulted in a novel laboratory environment containing radiant cooling panels and decentralized air supply, along with a self-shading, inflated "bubble" skin, experimental low emissivity (LowE) glazing, LED lighting, wireless sensors and distributed control. The laboratory evaluates and demonstrates for OPEN ACCESSEnergies 2013, 6 4552 the first time in Singapore an integrated high-temperature cooling system with separate demand-controlled ventilation adapted for the tropics. It is a functional lab testing system in real tropical conditions. As such, the results showing the ability to mitigate the risk of condensation by maintaining a dew point below 18 °C by the separate decentralized ventilation are significant and necessary for potential future implementation in buildings. In addition, the control system provides new proof of concept for distributed wireless sensors and control for reliable automation of the systems. These key results are presented along with the integrated design process and real-life tropical operation of the laboratory.

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Section: High Temperature Radiant Coolingmentioning

confidence: 99%

BubbleZERO—Design, Construction and Operation of a Transportable Research Laboratory for Low Exergy Building System Evaluation in the Tropics

et al. 2013

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“…Surface heat transfer can be calculated either separately for convection and radiation, as is the case in Chapter 6 of ASHRAE Handbook, HVAC Systems and Equipment [13] and recommended by researchers [14] or can be characterized using a combined heat transfer coefficient as is recommended by ISO 11855(2012). Usually, scientists are interested in the first approach, while designers prefer to use a combined heat transfer coefficient [15].…”

Section: Heat Transfer At the Radiant Surfacementioning

confidence: 99%

New method for the design of radiant floor cooling systems with solar radiation

Feng

Schiavon

Bauman

2016

Energy and Buildings

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Impacts of solar shortwave radiation are not taken into account in the standardized design methods in the current radiant system design guidelines. Therefore, the current methods are not applicable for cases where incident solar is significant. The goals of this study are to: 1) use dynamic simulation tools to investigate the impacts of solar radiation on floor cooling capacity, and 2) develop a new simplified method to calculate radiant floor cooling capacity when direct solar radiation is present. We used EnergyPlus to assess the impacts of solar for different design conditions. The simulation results showed that the actual cooling capacities are in average 1.44 times higher than the values calculated with the ISO 11855 method, and 1.2 times higher than the ASHRAE method. A simplified regression model is developed to improve the predictability of ISO methods. The new model calculates the increased capacity as a function of the zone transmitted solar and the characteristic temperature difference between the hydronic loop and room operative temperature.

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“…It can be integrated into the floor, wall or ceiling structure as the so-called thermally activated building system (TABS), or installed as a part of a suspended floor or ceiling. The thermal comfort and energy consumption of radiant surfaces have been an important topic of several studies described in the literature [4][5][6][7][8][9][10][11][12][13][14]. These studies are mainly based on small-scale experiments or numerical models, and they focus on rather specific questions about radiant ceiling systems.…”

Section: Introductionmentioning

confidence: 99%

“…According to Bonacci study, this could refer more to temperature fluctuations and extreme outdoor temperatures in certain periods of time than to general linear trends of yearly mean increase in air temperature [3]. Large-surface radiant systems have recently become a good alternative for heating and cooling the indoor built environment [4][5]. This technology efficiently uses the principle of small temperature difference between a large radiant surface and its surroundings [5].…”

Section: Introductionmentioning

confidence: 99%

Unutarnja okolina renoviranih ureda opremljenih stropnim isijavajućim pločama

Lakušić¹

2016

JCE

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Indoor environment in retrofitted offices equipped with radiant ceiling panelsThe indoor environment in retrofitted pilot demonstration offices, equipped with advanced radiant ceiling panels that were used for heating and cooling, is evaluated in the paper. Comprehensive analyses based on various sets of real case measurements were carried out in order to assess the efficiency and adequacy of the proposed retrofitting concept. It was established that the entire system for tempering the offices operates well, and that the range of indoor air temperatures ensures the highest level of comfort.Key words:analysis, evaluation, retrofitting concept, radiant ceiling panels, heating and cooling Pregledni rad Sabina Jordan, Jože Hafner, Tilmann E. Kuhn, Andraž Legat, Martina Zbašnik-Senegačnik Unutarnja okolina renoviranih ureda opremljenih stropnim isijavajućim pločama U radu se ocjenjuje unutarnja okolina renoviranih ureda koji su, kao pokusni primjer, opremljeni naprednim stropnim isijavajućim pločama koje se primjenjuju za grijanje i hlađenje. Obavljene su opsežne analize na bazi raznih nizova stvarnih mjerenja kako bi se ocijenila djelotvornost i prikladnost predložene koncepcije za adaptiranje prostora. Ustanovljeno je da čitav sustav za temperiranje uredskih prostora funkcionira na prikladan način, te da raspon unutarnjih temperatura zraka omogućava postizanje najviše razine udobnosti.

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Experimental study on the cooling capacity of a radiant cooled ceiling system

Cited by 78 publications

References 17 publications

BubbleZERO—Design, Construction and Operation of a Transportable Research Laboratory for Low Exergy Building System Evaluation in the Tropics

BubbleZERO—Design, Construction and Operation of a Transportable Research Laboratory for Low Exergy Building System Evaluation in the Tropics

New method for the design of radiant floor cooling systems with solar radiation

Unutarnja okolina renoviranih ureda opremljenih stropnim isijavajućim pločama

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