Determination of optimum insulation thickness for environmental impact reduction of pipe insulation

Başoğul, Yusuf; Demircan, Cihan; Keçebaş, Ali

doi:10.1016/j.applthermaleng.2016.03.010

Cited by 33 publications

(11 citation statements)

References 30 publications

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“…Erturk studied on the effects of insulation thickness on life cycle costs of steel pipes or ground structures in different diameters and economic parameters [29]. Basogul et al determined OIT of a pipe through LCA analysis [30].…”

Section: Introductionmentioning

confidence: 99%

Investigation of efficient parameters on optimum insulation thickness based on theoretical‐Taguchi combined method

Arslanoglu

Yiğit

2017

Env Prog and Sustain Energy

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Thermal insulation of buildings is one of the most effective energy conservation methods. However, most of the building walls still have little or no insulation despite Turkish Thermal Insulation Standard in Turkey. Four provinces from different climate zones, obtained by the Turkish Thermal Insulation Standard; Izmir (1st zone), Istanbul (2nd zone), Ankara (3rd zone), and Erzurum (4th zone) were selected for analysis. The aim of this study is to investigate of efficient parameters on optimum insulation thickness (OIT) in terms of the order of importance using theoretical‐Taguchi coupled method. The OIT was considered as performance parameter. An L16 (43*22) orthogonal array was chosen as a design plan for the five parameters (wall, insulation, fuel type, heating degree‐day (HDD) and lifetime). The results were analyzed using signal‐to‐noise (S/N) ratio and analysis of variance method. Furthermore, contribution ratios for each parameter on OIT. HDD value is the most effective parameter on the OIT with a contribution ratio of 34.53% percentage of the total effect. The second most effective parameter is insulation type with a contribution ratio of 30.6%, and the effect of fuel type on the OIT is contribution ratio of 24.18% and it is followed by lifetime (8.2%), wall type (0.67%), respectively. Consequently, daily mean temperature of cities is most important parameter on OIT. Insulation and fuel type effect is less than HDD, the impact of fuel type is close the impact of insulation type, and the effect of wall type is less than the other parameters. © 2017 American Institute of Chemical Engineers Environ Prog, 36: 1824–1831, 2017

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Section: Introductionmentioning

confidence: 99%

Investigation of efficient parameters on optimum insulation thickness based on theoretical‐Taguchi combined method

Arslanoglu

Yiğit

2017

Env Prog and Sustain Energy

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“…In sensitivity analysis, taking into account the EPS insulation material, fuel oil, pipe diameters with 50 and 1000 mm and air gap with 1 cm, it is used the variable parameters like interest rate, discount rate, life span, fuel unit cost, cost of insulation material per unit volume, heating degree day, and air gap value. However, many studies have reported that thermal conductivity of the insulation material has significant sensitivity for optimum insulation thickness. This study focused on the variable parameters mentioned above and especially on air gap.…”

Section: Resultsmentioning

confidence: 99%

“…Knowing the amount of heat carried/stored within fluid in a cylindrical pipe/tank is vital for thermal systems like district heating/cooling, industrial and chemical processing stations. The annual heat amount carried in these thermal systems may be determined using heat degree days . Using hourly data, annual heating degree day (HDD) value may be calculated with

italicHDD = ((), 1 year) \sum_{1}^{365} ((), T_{b} - T_{o})

where T b and T o are base temperature and external environmental temperature, respectively.…”

Section: Discussionmentioning

confidence: 99%

“…This information is beneficial to managers and engineers for determination of energy savings potential and assessment of energy performance of energy efficiency precautions. Some researchers have investigated sensitivity analysis for energy and thermal performances of buildings , and insulation thickness optimization for outer walls , and pipes .…”

Section: Introductionmentioning

confidence: 99%

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Sensitivity Analysis of Optimum Insulation Thickness for Pipe Diameters in Pipe Insulation with Air Gap for City Pipelines

Ural

Daşdemir

Keçebaş

2019

Env Prog and Sustain Energy

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The use of effective insulation methods to reduce heat loss and minimize its economic and environmental effects in city piping systems is an important topic globally. This study uses a new method for insulation of city piping systems of an air gap around pipelines and optimizes the thickness of insulation for the pipe. With this aim, a mathematical model based on heat degree days and life cycle cost analysis is used. Thus, according to the insulation thickness, air gap and pipe diameter values, the objective functions of optimum insulation thickness, energy cost savings, and payback period are comparatively assessed. The results indicate that using an air gap causes an 89% and 57% fall in optimum insulation thickness values for small and large diameter pipes, respectively. Additionally, sensitivity analysis was completed for the objective functions in terms of parameters such as interest rate, discount rate, life span, unit cost of fuel, cost of insulation material per unit volume, heat degree day, and air gap values. Based on the study methodology, life span, air gap, and unit fuel cost parameters were shown to have a significant effect on the objective functions. When insulation with air gap is applied, together with reducing the optimum insulation thickness at least 72% (from 0.009 to 0.031 m), it increases energy cost savings at 74% (from 5.47 to 21 $/m‐yr) for large diameter pipes and reduces the payback period at 78% (from 0.1 to 0.04 yr‐m) for small diameter pipes. © 2019 American Institute of Chemical Engineers Environ Prog, 38:e13146, 2019

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“…The basic element of such a system is the pipe, which enables the transport of energy; however, pipes also represent a significant source of heat losses. Heat gain, heat loss and temperature change in pipes are substantially influenced by the insulation material, the surrounding environment (i.e., ambient air for above-ground pipe or soil for underground pipe), and the pipe structure [5,7,16]. The hot water piping system is shown in Figure 2 for unit length.…”

Section: Methodology Used For Determining the Optimum Insulation Thicmentioning

confidence: 99%

Optimum insulation thickness for pipes in district heating systems – review

İlhan

2018

Journal of Mechanical and Energy Engineering

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Energy is an important factor for the social and economic development of communities. The energy performance of insulation systems is an important factor in today's increasing consumption of energy. Insulation in hot water pipelines is done to reduce heat losses caused by building elements. In this study, optimum insulation thickness, annual costs, energy saving and repayment times were evaluated in district heating systems. The evaluations were made for various pipe sizes, various fuel types and various insulation materials considering the heating loads of the regions. In addition, the formulas used for the heat loss and insulation economy are given in the study. As a result, the choice of an optimum insulation thickness in pipelines of district heating systems provides economic and environmental advantages.

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Determination of optimum insulation thickness for environmental impact reduction of pipe insulation

Cited by 33 publications

References 30 publications

Investigation of efficient parameters on optimum insulation thickness based on theoretical‐Taguchi combined method

Investigation of efficient parameters on optimum insulation thickness based on theoretical‐Taguchi combined method

Sensitivity Analysis of Optimum Insulation Thickness for Pipe Diameters in Pipe Insulation with Air Gap for City Pipelines

Optimum insulation thickness for pipes in district heating systems – review

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