Cardboard-Based Packaging Materials as Renewable Thermal Insulation of Buildings: Thermal and Life-Cycle Performance

Struhala, Karel; Čekon, Miroslav; Slávik, Richard

doi:10.7569/jrm.2017.634135

Cited by 18 publications

(7 citation statements)

References 10 publications

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“…By increasing the oyster shell percentage from 15% to 40%, the thermal conductivity coefficient K-value of the brick decreased from 0.188 to 0.083 W/mK, thus offering better thermal insulation [25]. The thermal conductivity of cardboard was determined as 0.05 W/m • C, which is within the range 0.05-0.12 W/m • C reported for cardboard, depending on the internal structure [26]. Asdrubali et al (2015), also estimated the thermal conductivity of cardboard-based panels to be around 0.055 W/m • C [27].…”

Section: Thermal Properties Of the Packaging Materials And Time-tempe...mentioning

confidence: 65%

Evaluation of a Calcium Carbonate-Based Container for Transportation and Storage of Fresh Fish as a Sustainable Alternative to Polystyrene Boxes

Basdeki,

Mpenetou,

Papazoglou

et al. 2023

Sustainability

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The present study aimed to assess the effect of alternative packaging materials on the quality retention and shelf-life of whole fish under low and abuse temperature conditions. Red sea bream (Pagrus major) was harvested and stored in different packaging containers, i.e., a conventional polystyrene (PS) box, a CaCO3-based box and a cardboard box (tested as a simple alternative container for transportation and short-term storage of food). After harvesting and transportation, fish was stored in the tested containers at 2 °C for 11 days and periodically kept at room temperature (25 °C) to simulate potential temperature fluctuations in the actual supply chain. The effect of temperature fluctuations and packaging materials on the quality and remaining shelf-life of fish was determined by microbial enumeration (total viable counts, Pseudomonas spp. and Enterobacteriaceae). PS retained fish quality and maintained a low temperature of fish for longer periods of time during storage at ambient conditions. The CaCO3-based containers also showed satisfactory performance, resulting in a similar microbial load in fish flesh to the samples stored in PS boxes after 11 days of simulated transportation and storage (TVC load 7.8–8.0 logcfu/g). Cardboard resulted in a rapid increase in the internal temperature during the temperature fluctuations at ambient conditions, resulting in higher microbial loads of fish flesh at all stages of the simulated cold chain. The replacement of conventional plastic packaging materials with alternative, environmentally friendly packaging systems without affecting the shelf-life of fish may reduce plastic waste while ensuring the high quality and shelf-life of perishable food products.

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Section: Thermal Properties Of the Packaging Materials And Time-tempe...mentioning

confidence: 65%

Evaluation of a Calcium Carbonate-Based Container for Transportation and Storage of Fresh Fish as a Sustainable Alternative to Polystyrene Boxes

Basdeki,

Mpenetou,

Papazoglou

et al. 2023

Sustainability

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show abstract

“…Owing to the R wall increment, even 2 mm of cardboard insulation reduced the heat loss by approximately 35% compared to the plastic box without additional insulation. This is not surprising since carboard is known to be a good thermal insulator with 0.05 J K −1 m thermal conductivity and is considered to be used as building material [13]. The PVC panel insulation provided slightly better results than the carboard insulation.…”

Section: Resultsmentioning

confidence: 94%

Modelling and measurements of heat transfer coefficient in classroom experiments

Goev,

Velinov

2024

Phys. Educ.

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Thermal insulation of buildings is important because it has both ecological and social impacts. Most often, it is characterized by the so-called U-value. Heat transfer through walls includes conduction, convection, and thermal radiation. This leads to complex measurements and calculations for assessing the effectiveness of different insulating materials, and the usual methods are not suitable for classroom experiments. We propose a simple method for measuring the U-values of varied materials used in everyday life that can be performed in the classroom. It is based on measuring the temperature inside and outside a box, and the power, released by a resistance coil inside the box.

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“…However, if not available, expanded polystyrene could be replaced by using several layers of common corrugated cardboard recycled from packaging boxes. Indeed, conventional corrugated cardboard has a thermal conductivity ≈2-fold greater than expanded polystyrene [29], indicating that using a cardboard-based chamber wall with 2-fold thickness would provide similar thermal isolation as employing expanded polystyrene. Interestingly, the material of the ice/water container and hose within the chamber (Figure 1) is not relevant because, as they are surrounded by the isolating wall, they play no role in heat exchange.…”

Section: Discussionmentioning

confidence: 99%

A Low-Cost, Easy-to-Assemble Device to Prevent Infant Hyperthermia under Conditions of High Thermal Stress

Farré

Rodríguez-Lázaro

Dinh-Xuan

et al. 2021

IJERPH

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High ambient temperature and humidity greatly increase the risk of hyperthermia and mortality, particularly in infants, who are especially prone to dehydration. World areas at high risk of heat stress include many of the low- and middle-income countries (LMICs) where most of their inhabitants have no access to air conditioning. This study aimed to design, evaluate, and test a novel low-cost and easy-to-assemble device aimed at preventing the risk of infant hyperthermia in LMICs. The device is based on optimizing negative heat transfer from a small amount of ice and transferring it directly to the infant by airflow of refrigerated air. As a proof of concept, a device was assembled mainly using recycled materials, and its performance was assessed under laboratory-controlled conditions in a climatic chamber mimicking realistic stress conditions of high temperature and humidity. The device, which can be assembled by any layperson using easily available materials, provided sufficient refrigerating capacity for several hours from just 1–2 kg of ice obtained from a domestic freezer. Thus, application of this novel device may serve to attenuate the adverse effects of heat stress in infants, particularly in the context of the evolving climatic change trends.

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Cardboard-Based Packaging Materials as Renewable Thermal Insulation of Buildings: Thermal and Life-Cycle Performance

Cited by 18 publications

References 10 publications

Evaluation of a Calcium Carbonate-Based Container for Transportation and Storage of Fresh Fish as a Sustainable Alternative to Polystyrene Boxes

Evaluation of a Calcium Carbonate-Based Container for Transportation and Storage of Fresh Fish as a Sustainable Alternative to Polystyrene Boxes

Modelling and measurements of heat transfer coefficient in classroom experiments

A Low-Cost, Easy-to-Assemble Device to Prevent Infant Hyperthermia under Conditions of High Thermal Stress

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