Economic and Energy Analysis of Building Retrofitting Using Internal Insulations

Basińska, Małgorzata; Kaczorek, Dobrosława; Koczyk, Halina

doi:10.3390/en14092446

Cited by 21 publications

(13 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, the study shows that cost-efficiency could be reduced in real retrofits, due to underestimated thermal transmittance of existing walls and material wastage on site. Basi ńska et al [30] find that hygro-thermal properties of insulation materials have negligible effects on the energy demand of a building. Marrone et al [31] show that super insulation materials give competitive cost savings compared to traditional insulation materials (e.g., rock wool) when incentives are applied, though the assumed service life could influence the profitability of such insulation materials.…”

Section: Introductionmentioning

confidence: 99%

Cost Optimized Building Energy Retrofit Measures and Primary Energy Savings under Different Retrofitting Materials, Economic Scenarios, and Energy Supply

Gustavsson

Piccardo

2022

Energies

View full text Add to dashboard Cite

We analyze conventional retrofit building materials, aluminum, rock, and glass wool materials and compared such materials with wood-based materials to understand the lifecycle primary energy implications of moving from non-renewable to wood-based materials. We calculate cost optimum retrofit measures for a multi-apartment building in a lifecycle perspective, and lifecycle primary energy savings of each optimized measure. The retrofit measures consist of the thermal improvement of windows with varied frame materials, as well as extra insulation of attic floor, basement walls, and external walls with varied insulation materials. The most renewable-based heat supply is from a bioenergy-based district heating (DH) system. We use the marginal cost difference method to calculate cost-optimized retrofit measures. The net present value of energy cost savings of each measure with a varied energy performance is calculated and then compared with the calculated retrofit cost to identify the cost optimum of each measure. In a sensitivity analysis, we analyze the cost optimum retrofit measures under different economic and DH supply scenarios. The retrofit costs and primary energy savings vary somewhat between non-renewable and wood-based retrofit measures but do not influence the cost optimum levels significantly, as the economic parameters do. The lifecycle primary use of wood fiber insulation is about 76% and 80% less than for glass wool and rock wool, respectively. A small-scale DH system gives higher primary energy and cost savings compared to larger DH systems. The optimum final energy savings, in one of the economic scenarios, are close to meeting the requirements in one of the Swedish passive house standards.

show abstract

Section: Introductionmentioning

confidence: 99%

Cost Optimized Building Energy Retrofit Measures and Primary Energy Savings under Different Retrofitting Materials, Economic Scenarios, and Energy Supply

Gustavsson

Piccardo

2022

Energies

View full text Add to dashboard Cite

show abstract

“…Most studies on the subject of green remodeling focus only on improving energy consumption [51,52]. These studies may lead to the development of new business models.…”

Section: Discussionmentioning

confidence: 99%

Current Status of Aged Public Buildings and Effect Analysis Prediction of Green Remodeling in South Korea

2021

View full text Add to dashboard Cite

The purpose of this study is to analyze the scope of the expected improvement effect of office buildings and educational research facilities according to green remodeling. Thus, in order to quantitatively grasp the architectural performance of the existing buildings, the building thermal performance, the airtightness, the indoor environment, and the air quality were measured using equipment. The analysis indicated that the envelope performance and the indoor environment were unsatisfactory compared to the current legal standards, and for indoor air quality, CO2 and formaldehyde were measured to be dissatisfactory in some buildings. The energy analysis results indicated that the improvement range differed according to the renovation history for each building, resulting in differences in the energy-saving rate for each alternative. The reduction rates of primary energy consumption using energy simulation were 38.5–67.4% for office buildings and 23.7–66.3% for educational research facilities, and the payback periods were 14 to 27 years for office buildings and 12 to 30 years for educational research facilities. These results are expected to contribute to the activation of green remodeling because they can be used as indicators to predict the expected construction cost, the payback period, and the expected effect required for green remodeling.

show abstract

“…However, retrofitting existing buildings can be counterproductive and inconvenient both from technical and economic points of view. Basi ńska et al [17] present an energy and economic analysis of retrofitting the internal walls of a residential building with thermal insulation. They compare four alternative solutions, and none of them is economically convenient due to the extended return time of the initial investment.…”

Section: Energy Efficiencymentioning

confidence: 99%

Sustainability of Shallow Geothermal Energy for Building Air-Conditioning

2021

View full text Add to dashboard Cite

Geothermal heat pumps have a widespread diffusion as they are able to deliver relatively higher energy output than other systems for building air-conditioning. The exploitation of low-enthalpy geothermal energy, however, presents crucial sustainability issues. This review investigates the primary forms of the environmental impact of geothermal heat pumps and the strategies for their mitigation. As life-cycle analyses shows that the highest impacts arise from installation and operation stages, most optimization studies focus on system thermodynamics, aiming at maximizing the energy performance via the optimization in the design of the different components interacting with the ground and serviced building. There are environmental studies of great relevance that investigate how the climate and ground properties affect the system sustainability and map the most suitable location for geothermal exploitation. Based on this review, ground-source heat pumps are a promising technology for the decarbonization of the building sector. However, a sustainable design of such systems is more complex than conventional air-conditioning systems, and it needs a holistic and multi-disciplinary approach to include the broad environmental boundaries to fully understand the environmental consequences of their operation.

show abstract

Economic and Energy Analysis of Building Retrofitting Using Internal Insulations

Cited by 21 publications

References 43 publications

Cost Optimized Building Energy Retrofit Measures and Primary Energy Savings under Different Retrofitting Materials, Economic Scenarios, and Energy Supply

Cost Optimized Building Energy Retrofit Measures and Primary Energy Savings under Different Retrofitting Materials, Economic Scenarios, and Energy Supply

Current Status of Aged Public Buildings and Effect Analysis Prediction of Green Remodeling in South Korea

Sustainability of Shallow Geothermal Energy for Building Air-Conditioning

Contact Info

Product

Resources

About