A critical review of passive condensation prevention for radiant cooling

Xing, Daoming; Li, Nianping; Zhang, Chen; Heiselberg, Per

doi:10.1016/j.buildenv.2021.108230

Cited by 37 publications

(4 citation statements)

References 81 publications

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“…*evaporative cooling and *radiant cooling did not appear in both the co-occurrence network and multidimensional scaling maps. Both passive cooling methods considered materials, structures, and installation positions [16][17][18][19][20][62][63][64]; thus, it is difficult to connect specific words in the co-occurrence network. Interestingly, radiant and evaporative were among the 200 most frequently used words.…”

Section: Constructing Coding Rulesmentioning

confidence: 99%

A Systematic Review of Passive Cooling Methods in Hot and Humid Climates Using a Text Mining-Based Bibliometric Approach

Nagasue,

Kitagawa,

Asawa

et al. 2024

Sustainability

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The number of scientific papers has dramatically increased in recent years; however, such a huge number of papers often become difficult to review qualitatively because of limited time and cost. A text-mining-based bibliometric analysis method is developed to provide a comprehensive overview of passive cooling methods used in buildings in hot and humid climates. First, a comprehensive overview analysis is conducted to clarify the trends in studies on passive cooling methods between 1970 and 2022, using 39,604 publications. Second, 15 coding rules are constructed to perform a detailed analysis, and possible combinations of passive cooling methods are discussed. The detailed analysis of the co-occurrence network based on the comprehensive overview and 15 coding rules shows that the recent studies on thermal energy storage have mainly focused on phase change material (PCM), which is a latent heat storage material, rather than sensible heat storage materials such as concrete. The analysis of the co-occurrence network indicates that natural ventilation maintains the vital role of passive cooling methods by improving thermal comfort in hot climates. The constructed method and possible combinations of passive cooling methods for hot and humid climates will help engineers find effective combinations in the planning stage.

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Section: Constructing Coding Rulesmentioning

confidence: 99%

A Systematic Review of Passive Cooling Methods in Hot and Humid Climates Using a Text Mining-Based Bibliometric Approach

Nagasue,

Kitagawa,

Asawa

et al. 2024

Sustainability

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“…In addition, calculating the minimum wall temperature is critical to determining the minimum allowable humidity level of the zone air to avoid condensation on the wall surface. Condensation also reduces the effectiveness of radiant cooling systems [45]. Moreover, thermal comfort can be impacted by the uniformity of the surface temperature.…”

Section: Water Outlet and Average Wall Temperaturesmentioning

confidence: 99%

Space Cooling Energy Potential of Domestic Cold Water before Household Consumption in Cold-Climate Regions

Rezvanpour

Chen

2023

Buildings

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Space cooling energy consumption in residential buildings has tripled globally over the past three decades, leading to a significant increase in greenhouse gas (GHG) emissions and building operating costs. To reduce building cooling energy consumption, cooling energy can be recovered from domestic cold water (DCW) for space cooling by circulating DCW through thermally massive walls (herein “DCW-wall”) before regular household consumption (e.g., showers). This approach is more effective in cold climate regions since the DCW is cooler in these regions, yet its engineering design and effectiveness have not been evaluated previously. This study evaluated the cooling potential of DCW-walls in different operation scenarios (e.g., inlet temperatures, zone temperatures, and piping configurations). A typical DCW usage pattern and a daily amount of 1200 L were selected for evaluation. Three-dimensional transient thermal simulations were used to obtain the water outlet temperatures, average wall surface temperatures, and cooling potentials. The results showed that a DCW wall with a spiral piping configuration and DCW inlet at 12 °C can deliver 21.92 MJ of cooling energy daily to a zone at 25 °C. This amount of free energy can cover up to approximately 11% of the annual cooling energy demand of a four-person dwelling in Toronto, Canada, which has a warm and humid summer.

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“…In addition, a radiant cooling system combined with a mechanical ventilation system can also effectively avoid the shortcomings of traditional air-conditioning systems, such as bacterial growth and loud noise [13][14][15][16]. Normally, the radiant cooling system is divided into three types according to the installation location: ceiling cooling (CC), floor cooling (FC) and wall cooling (WC) [17][18][19]. The cooling capacity per unit area of CC is up to 100 W/m 2 , which is more suitable for modern buildings with large, sensible cooling loads compared to FC and WC [20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Indoor Air Distribution and Thermal Environment in a Ceiling Cooling Room with Mixing Ventilation, Underfloor Air Distribution and Stratum Ventilation

Wu,

Gao,

Zhao

et al. 2023

Buildings

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A ceiling cooling system integrated with a mechanical ventilation system has been widely used in modern buildings with large sensible cooling loads due to the high thermal comfort level and large energy efficiency. However, there is a lack of systematic research on the influence factors such as ceiling surface temperature and cooling load on the indoor air distribution and thermal environment, and the impact of ventilation system type in the ceiling cooling room is still unclear. Therefore, this paper presented an experimental study of indoor air distribution and thermal environment in a ceiling cooling (CC) room with mixing ventilation (MV), underfloor air distribution (UFAD) and stratum ventilation (SV); the ceiling surface temperature was 17 °C–26 °C and the internal or external cooling load was 41.5 W/m2–69.5 W/m2. The results showed that the vertical air temperature difference and contaminant removal effectiveness were 0.2 °C–0.4 °C and 0.53–0.85 with CC + MV, 0 °C–1.2 °C and 0.68–1.25 with CC + UFAD and 0.3 °C–0.9 °C and 0.50–0.83 with CC + SV, and the corresponding heat removal effectiveness and air diffusion performance index were 0.96–1.11 and 96–100%, 0.9–1.5 and 57–100% and 1.11–1.34 and 71–100%, respectively. Moreover, the difference between mean radiant temperature and air temperature and the predicted mean vote of thermal sensation were from 0 °C to 0.9 °C and between 0 and 0.26 with CC + MV, from −0.1 °C to 2.2 °C and between −0.1 and 0.42 with CC + UFAD and from −0.1 °C to 0.9 °C and between −0.2 and 0.13 with CC + SV. Hence, the ventilation system type clearly affected the indoor air distribution and thermal environment in the ceiling cooling room, and the experimental results would be beneficial for the design and control of a ceiling cooling system combined with a mechanical ventilation system in practice.

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A critical review of passive condensation prevention for radiant cooling

Cited by 37 publications

References 81 publications

A Systematic Review of Passive Cooling Methods in Hot and Humid Climates Using a Text Mining-Based Bibliometric Approach

A Systematic Review of Passive Cooling Methods in Hot and Humid Climates Using a Text Mining-Based Bibliometric Approach

Space Cooling Energy Potential of Domestic Cold Water before Household Consumption in Cold-Climate Regions

Experimental Study of Indoor Air Distribution and Thermal Environment in a Ceiling Cooling Room with Mixing Ventilation, Underfloor Air Distribution and Stratum Ventilation

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