Optimal structure for heat and cold protection under transient heat conduction

Seppälä, Ari; Assad, Mamdouh El Haj; Kapanen, Tero

doi:10.1007/s00158-007-0171-x

Cited by 6 publications

(4 citation statements)

References 3 publications

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“…In addition to TES, the proposed PCM-crosslinked polystyrene composites could be promising thermal protection candidates, as a heat storage material and polystyrene with a low thermal conductivity are combined in the structure. 11,12 Polymerization of HIPEs has previously been utilized for developing toner particles for electrophotographic printing. 13,14 However, this technology has not been applied earlier to development of heat storage materials.…”

Section: Introductionmentioning

confidence: 99%

Novel microstructured polyol–polystyrene composites for seasonal heat storage

et al. 2016

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We propose a robust route to prepare supercooling microstructured phase change materials (PCMs) suitable for long-term heat storage or thermal protection applications. The new preparation method is based on polymerization of high internal phase emulsion (HIPE). Two promising polyols, erythritol and xylitol, are successfully prepared as new type microencapsulated PCM-polystyrene composites with PCM mass fractions of 62w-% and 67 w-%, respectively, and average void diameter of ~50 µm. Thermal properties of polyol-polystyrene composites and bulk polyols are studied thoroughly with differential scanning calorimetry (DSC). Microscale engineering has a significant impact on the thermal properties of polyols. Crystallization of the microscale erythritol is accelerated as compared to the crystallization of bulk PCM due to high fraction of solid surfaces in the polymer-polyol composites. Furthermore, crystallization properties of the microstructured erythritol are preserved similar in the cycling experiments. Crystallization of the bulk erythritol is found to strongly depend on the cooling rate, thermal history of the sample and surface roughness of the crucible, whereas these factors have only little impact on the crystallization of microstructured erythritol. In addition, microstructured polyolpolystyrene composites show anomalous enhancement in the specific heat as compared to bulk polyols. This enhancement may be originated from the strong polyol-surfactant interactions occurring in the composites.

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Section: Introductionmentioning

confidence: 99%

Novel microstructured polyol–polystyrene composites for seasonal heat storage

et al. 2016

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“…Energy saving is a systematic project, but wall insulation is key to achieving buildings' energy efficiency [10]. In order to research, the paper analyzes the external walls and roofs only and then they establish an evaluation model as Fig.…”

Section: Comprehensive Benefit Of Energy-saving Social Security Housesmentioning

confidence: 99%

Study on the Comprehensive Benefit of the Energy-Saving Social Security Houses

Shi

2012

AMR

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Due to the lack of money and information asymmetry, the energy-saving benefit of social security houses has been ignored in some regions. According to the Economic Evaluation Method and Parameters of Construction Projects (III), this paper has a discussion on the energy-saving security rooms from perspectives of financial benefit, national economic benefit and social benefit. The results show that there is a phenomenon of “market failure” in the field of energy-saving social security houses，and then the authors put forward to some suggestions for government.

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“…Energy conservation plays an important role in national energy strategies, mitigating the substantial pressure on resources and the environment [2,3]. In building palisade components, the external wall area occupies a larger proportion, compared with the building roof, doors, windows, and so forth [4,5]. The thermal preservation performance of the exterior wall is the key to achieving energy efficiency in buildings [5,6].…”

Section: Introductionmentioning

confidence: 99%

“…In building palisade components, the external wall area occupies a larger proportion, compared with the building roof, doors, windows, and so forth [4,5]. The thermal preservation performance of the exterior wall is the key to achieving energy efficiency in buildings [5,6]. Exterior wall differs among building materials, structural types and varies with environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

The Heat Transfer Coefficient of Recycled Concrete Bricks Combination with EPS Insulation Board Wall

Cao

2015

Mathematical Problems in Engineering

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Four tectonic forms samples were conducted to test their heat transfer coefficients. By analyzing and comparing the test values and theoretical values of the heat transfer coefficient, a corrected-value calculation method for determining the heat transfer coefficient was proposed; the proposed method was proved to be reasonably correct. The results indicated that the recycled concrete brick wall heat transfer coefficient is higher than that of the clay brick wall, the heat transfer coefficient of recycled concrete brick wall could be effectively reduced when combined with the EPS insulation board, and the sandwich insulation type was better than that of external thermal insulation type.

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Optimal structure for heat and cold protection under transient heat conduction

Cited by 6 publications

References 3 publications

Novel microstructured polyol–polystyrene composites for seasonal heat storage

Novel microstructured polyol–polystyrene composites for seasonal heat storage

Study on the Comprehensive Benefit of the Energy-Saving Social Security Houses

The Heat Transfer Coefficient of Recycled Concrete Bricks Combination with EPS Insulation Board Wall

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