Green buildings model: Impact of rigid polyurethane foam on indoor environment and sustainable development in energy sector

Alsuhaibani, Amnah Mohammed; Refat, Moamen S.; Qaisrani, Saeed Ahmad; Jamil, Farhad; Abbas, Zoobia; Zehra, Anum; Baluch, Khaqan; Kim, Jung Gyu; Mubeen, Muhammad

doi:10.1016/j.heliyon.2023.e14451

Cited by 17 publications

(8 citation statements)

References 25 publications

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“…The λ plays an essential role in determining the suitability of RPUFs for thermal insulation applications. − In the context of rigid foam insulation, lower thermal conductivity values are desirable since they indicate that the material is less effective at conducting heat . For instance, polyurethane and thermoplastic-based rigid foam are preferred over concrete-based materials as wall insulation due to their relatively low thermal conductivity (0.02–0.1 vs 0.08–2.5 Wm –1 K –1 ). , Table presents the λ values of the RPUFs, with neat RS-0% exhibiting a λ of 0.031 Wm –1 K –1 .…”

Section: Resultsmentioning

confidence: 99%

“…One of the most well-known PU products is rigid PU foam (RPUF), commonly employed in construction and insulation applications due to its exceptional insulating properties and structural integrity. − PU synthesis entails the reaction between hydroxyl (−OH) groups in polyols and –NCO groups in isocyanates, , (Figure ). The polyol types significantly influence the resulting PU properties. ,− Traditionally, polyols used in PU production are primarily derived from petroleum feedstocks.…”

Section: Introductionmentioning

confidence: 99%

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Valorization of Agricultural Rice Straw as a Sustainable Feedstock for Rigid Polyurethane/Polyisocyanurate Foam Production

Dingcong,

Ahalajal,

Mendija

et al. 2024

ACS Omega

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Agricultural rice straw (RS), often discarded as waste in farmlands, represents a vast and underutilized resource. This study explores the valorization of RS as a potential feedstock for rigid polyurethane/polyisocyanurate foam (RPUF) production. The process begins with the liquefaction of RS to create an RS-based polyol, which is then used in a modified foam formulation to prepare RPUFs. The resulting RPUF samples were comprehensively characterized according to their physical, mechanical, and thermal properties. The results demonstrated that up to 50% by weight of petroleum-based polyol can be substituted with RS-based polyol to produce a highly functional RPUF. The obtained foams exhibited a notably low apparent density of 18−24 kg/m 3 , exceptional thermal conductivity ranging from 0.031−0.041 W/m-K, and a high compressive strength exceeding 250 kPa. This study underlines the potential of the undervalued agricultural RS as a green alternative to petroleum-based feedstocks to produce a highvalue RPUF. Additionally, the findings contribute to the sustainable utilization of abundant agricultural waste while offering an ecofriendly option for various applications, including construction materials and insulation.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Valorization of Agricultural Rice Straw as a Sustainable Feedstock for Rigid Polyurethane/Polyisocyanurate Foam Production

Dingcong,

Ahalajal,

Mendija

et al. 2024

ACS Omega

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show abstract

“…Further exploration and development of location-specific methodologies should be pursued to address specific needs [ 129 ]. For example, multiple green-oriented construction practices demand energy-efficient materials, such as polyurethane [ 130 ]. In addition, technological exaptation can reduce vulnerability during crisis events.…”

Section: Discussionmentioning

confidence: 99%

Innovative governance for transformative energy policy in sub-Saharan Africa after COVID-19: Green pathways in Egypt, Nigeria, and South Africa

Muza

2024

Heliyon

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“…The walls, roof, and floor of the cold room are constructed using stainless steel with polyurethane insulation, a commonly utilized material in food storage units [35][36][37], as illustrated in Figure 4. The walls consist of four layers, namely stainless steel, polyurethane, stainless steel and aluminum, with the properties shown in Table 1.…”

Section: Fish Storage Unitmentioning

confidence: 99%

Design, Economic, and Environmental Accounting Assessment of a Solar-Powered Cold Room for Fish Storage in Traditional Markets

Rami,

Allouhi

2024

Sustainability

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The food industry, crucial for emerging economies, faces challenges in refrigeration, particularly in fish storage. High energy consumption, environmental impact, and improper cooling methods leading to food waste are significant issues. Addressing these challenges is vital for economic and environmental sustainability in the food sector, especially concerning fish storage where spoilage rates are high. In this context, this research proposes a sizing methodology, evaluation, and parametric simulations based on multi-criteria attributes for a solar PV-powered cold room for storing fish in traditional markets in Morocco. To identify the cooling load of the system, TRNSYS 16 was utilized to simulate the transient behavior, while the PV array specifications were determined using SAM 2017.9.5 software. The design process introduced a cold room coupled to a refrigeration unit powered by a 15.3 m2 PV array with a 1.8 kWp nameplate capacity. Finally, yearly and life cycle metrics including self-sufficiency, self-consumption, Levelized Cost of Cooling (LCOC), discounted payback period (DPP), CO2 emissions avoided and total environmental penalty cost savings (TEPCS) are evaluated to assess the performance of the system and a sensitivity analysis was conducted on these metrics. The proposed system has an attractive LCOC of 0.131 $/kWhCold and a DPP of 3.511 years. Using the PV array proved to avoid 437.56 tons of CO2 emissions and generated TEPCS from $100.59 to $866.66. The results of this study highlight the potential for utilizing renewable energy sources in the refrigeration sector to improve both economic and environmental sustainability.

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Green buildings model: Impact of rigid polyurethane foam on indoor environment and sustainable development in energy sector

Cited by 17 publications

References 25 publications

Valorization of Agricultural Rice Straw as a Sustainable Feedstock for Rigid Polyurethane/Polyisocyanurate Foam Production

Valorization of Agricultural Rice Straw as a Sustainable Feedstock for Rigid Polyurethane/Polyisocyanurate Foam Production

Innovative governance for transformative energy policy in sub-Saharan Africa after COVID-19: Green pathways in Egypt, Nigeria, and South Africa

Design, Economic, and Environmental Accounting Assessment of a Solar-Powered Cold Room for Fish Storage in Traditional Markets

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