Analysis of Insulation Panels Made from Agro-Industrial Waste for Reducing Heat Transfer in Colombian Coastal Cities: Case Study of the City of Barranquilla

ABSTRACT

It is known that insulation panels made from natural fibers have great potential as raw materials for manufacturing various thermal insulators. Their insulating properties are due, among other things, to their porous structure and low density. This article investigated the potential reduction in heat transfer through the walls of buildings in the city of Barranquilla using insulation panels made from agro-industrial waste. Four scenarios were considered, one without thermal insulation and three using insulation panels manufactured in other studies, including a eucalyptus bark panel, a cardboard and alpha fiber waste panel, and a panel made from jute and polypropylene. The study was conducted considering the minimum and maximum temperatures in Barranquilla during the year 2022. When analyzing heat transfer using the maximum daily ambient temperature as a reference, the decrease in heat transfer per square meter ranged from 8.38–23.78 J/s, with the eucalyptus bark and jute panels performing the best, and when considering the minimum temperature conditions, the heat transfer per square meter was reduced between 2.93–10.46 J/s. It was demonstrated that the three panels used have great potential to reduce heat transfer through the walls.

摘要

众所周知，由天然纤维制成的隔热板作为制造各种隔热材料的原材料具有巨大的潜力. 它们的绝缘性能主要是由于它们的多孔结构和低密度. 本文研究了使用农用工业废物制成的隔热板减少巴兰基亚市建筑物墙壁传热的可能性. 考虑了四种情况，一种没有隔热，三种使用其他研究中制造的隔热板，包括桉树皮板、纸板和α纤维废料板，以及黄麻和聚丙烯制成的板. 该研究考虑了巴兰基亚2022年的最低和最高温度. 当使用最高日环境温度作为参考来分析热传递时，每平方米的热传递降低范围为8.38-23.78 J/s，其中桉树皮和黄麻板表现最好，当考虑最低温度条件时，每平米的热传递减少范围为2.93-10.46 J/s. 研究表明，所使用的三块面板在减少通过墙壁的热传递方面具有巨大的潜力.

KEYWORDS:

• Energy efficiency
• thermal insulation
• biocomposites
• energy savings
• thermal comfort
• heat transfer reduction

关键词:

• 能源效率
• 隔热
• 生物复合材料
• 节能
• 热舒适性
• 热传递减少

Nomenclature

A	=	Heat transfer area
$h_{\mathit{ext}}$	=	External convective heat transfer coefficient.
$h_{\mathit{int}}$	=	Internal convective heat transfer coefficient
$k_i$	=	Thermal conductivity of the i-th element
$L_i$	=	Thickness of the i-th element
$\dot{Q}$	=	Heat transfer through the walls between the interior of the building and the environment.
$R_{\mathit{cond},\mathit{concrete}}$	=	Conductive thermal resistance of concrete.
$R_{\mathit{cond},\mathit{gypsum}}$	=	Conductive thermal resistance of gypsum.
$R_{\mathit{cond},\mathit{i}}$	=	Conductive thermal resistance of the i-th element
$R_{\mathit{cond},\mathit{paint}}$	=	Conductive thermal resistance of the paint
$R_{\mathit{cond},\mathit{panel}}$	=	Conductive thermal resistance of the insulating panel
$R_{\mathit{cond},\mathit{total}}$	=	Total conductive thermal resistance
$R_{\mathit{conv},\mathit{ext}}$	=	External convective thermal resistance
$R_{\mathit{conv},\mathit{int}}$	=	Internal convective thermal resistance
$R_{\mathit{ext}}$	=	External thermal resistance
$R_{\mathit{Rad},\mathit{ext}}$	=	Thermal radiation resistance
$T_{\mathit{ext}}$	=	External temperature
$T_{\mathit{int}}$	=	Internal temperature
$T_s$	=	External wall surface temperature
$\mathit{\epsilon }$	=	Emissivity coefficient
$\mathit{\sigma }$	=	Stefan-Boltzmann constant

Disclosure statement

No potential conflict of interest was reported by the author(s).

Data availability statement

All temperature data used was taken from the IDEAM website, with reference to the data from Barranquilla Airport (Soledad). The URL where this data can be found is as follows: http://www.pronosticosyalertas.gov.co/informacion-diaria-de-precipitacion-y-temperatura-de-los-principiales-aeropuertos-del-pais

Additional information

Funding

The authors declare that no funds, grants, or other support were received during the preparation of this manuscript.