Energy savings in Danish residential building stock

Tommerup, Henrik M.; Svendsen, Svend

doi:10.1016/j.enbuild.2005.08.017

Cited by 249 publications

(117 citation statements)

References 1 publication

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“…In a Danish study the savings potential for space heating is forecasted at 80% up to the year 2050 [3]. Earlier studies in Sweden have also shown considerable potential for energy savings in the building sector [4,5] and this potential is to a large extent still remaining as few improvements have taken place since the 1990s [6].…”

Section: Introductionmentioning

confidence: 99%

Energy conservation measures in buildings heated by district heating – A local energy system perspective

Difs

Bennstam²,

Trygg

et al. 2010

Energy

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The extensive energy use in the European building sector creates opportunities for implementing energy conservation measures (ECMs) in residential buildings. If ECM are implemented in buildings that are connected to a district heating (DH) system, the operation of DH plants may be affected, which in turn may change both revenue and electricity production in cogeneration plants. In this study a local energy system, containing a DH supplier and its customer, has been analysed when implementing three ECMs: heat load control, attic insulation and electricity savings. This study is unique since it analyses economic and CO 2 impacts of the ECMs in both a user and a supplier perspective in combination with a deregulated European electricity market. Results show that for the local energy system electricity savings should be prioritised over a reduction in DH use, both from an economic and a global CO 2 perspective. For the DH supplier attic insulation demonstrates unprofitable results, even though this measure affects the expensive peak load boilers most. Heat load control is however financially beneficial for both the DH supplier and the residences. Furthermore, the relation between the fixed and variable DH costs is highlighted as a key factor for the profitability of the ECMs.

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Section: Introductionmentioning

confidence: 99%

Energy conservation measures in buildings heated by district heating – A local energy system perspective

Difs

Bennstam²,

Trygg

et al. 2010

Energy

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“…Cost evaluation is based on NPV (net present value) calculation to determine the payback period (years) of investment costs [39,40].…”

Section: Investment/payback Analysis Of Ecmsmentioning

confidence: 99%

Optimization of an envelope retrofit strategy for an existing office building

Gucyeter

Günaydın

2012

Energy and Buildings

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a b s t r a c tEnergy-efficient retrofits include improvement of building envelope via insulation, employment of building integrated renewable energy technologies, and climate control strategies. Building envelope improvements with insulation is a common approach, yet decision-making plays an important role in determining the most appropriate envelope retrofit strategy. In this study, main objective is to evaluate and optimize envelope retrofit strategies through a calibrated simulation approach. Based on an energy performance audit and monitoring, an existing building is evaluated on performance levels and improvement potentials with basic energy conservation measures (ECMs). The existing building is monitored for a full year and monitoring data is used in calibrating the simulation model. In order to obtain a better-performing building envelope three retrofit strategies including several ECMs are proposed. Retrofit strategies are simulated through calibrated base-case model, and results are evaluated according to changes in indoor environmental parameters and annual energy consumption measures. The analysis of results indicated that pre-assessed strategies yield close results. Therefore, a more comprehensive evaluation based on different decisive criteria is used in optimization of the final retrofit strategy, with the intention to evaluate the effect of individual ECMs on annual end-use energy consumption and investment.

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“…To launch a climate-compatible project, paying attention to regional climate and climate-compatible materials to gain better establishment, using methods and technique software have great importance (Tommerup & Svendsen, 2005). For this purpose, two typical residential buildings were examined and the results were represented in graphical form.…”

Section: The Effect Of Climate On Architecturementioning

confidence: 99%

Comparative Study of Single-glazed and Double-glazed Windows in Terms of Energy Efficiency and Economic Expenses

Forughian¹,

Aiini

2017

TAKSAD

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Saving fossil fuels and the use of clean sources of energy lead to reduce in building operating costs, protect the environment and people's health. Windows are the most vulnerable part of building where energy loss occurs. Double-glazed windows are very effective in keeping inside temperature isolated from outside; thereby, saving electrical and thermal energy. The current study estimates the numerical changes in cooling and heating load in case of replacement double-glazed window with single-glazed window and calculates saving level for this replacement. In this context, this paper presents a model of real samples taken in Mashhad climate. To ensure the accuracy of the simulation results, real results were compared with electricity and gas bills. To calculate energy related parameters such as cooling load, heating load, the consumption of gas and electricity, the energy simulation software (Design Builder) was used. The research method was a quantitative analysis based on energy consumption modeling, associated with building windows which comes in four sections. The field study was also used to compare with real electricity and gas bills. As the first stage, samples of the plan were identified, based on the observation of climate models and library studies. Then, simulation parameters such as window materials and internal and external walls were considered. The simulation was performed based software's parameters and model limitations were determined based on thermal, lighting, climatic and architectural parameters. Finally, the experimental and practical data were used to determine the validity of the model under Mashhad climate conditions. Overall, the results indicated that double-glazed windows could save 50% of entire building loads, 0.2% on power consumption, 16.2% on gas and 12.4% on overall households' energy consumption.

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Energy savings in Danish residential building stock

Cited by 249 publications

References 1 publication

Energy conservation measures in buildings heated by district heating – A local energy system perspective

Energy conservation measures in buildings heated by district heating – A local energy system perspective

Optimization of an envelope retrofit strategy for an existing office building

Comparative Study of Single-glazed and Double-glazed Windows in Terms of Energy Efficiency and Economic Expenses

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