Cost optimum calculation of energy efficiency measures in the Czech Republic

Karásek, Jiří; Pojar, Jan; Kaločai, Ladislav; Heralová, Renáta Schneiderová

doi:10.1016/j.enpol.2018.08.049

Cited by 22 publications

(10 citation statements)

References 15 publications

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“…The 30 years is building aging according to accounting. Total cost expenses include energy cost, investment cost and maintenance cost (Karasek et al, 2018). Those are used to calculate 30 years present worth.…”

Section: Methodsmentioning

confidence: 99%

Optimum Design of Retail and Wholesale Building for Minimum Energy Consumption and Total Cost

Watcharapongvinij¹,

Therdyothin²

2019

IJEEP

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The electric consumption in the building shares the highest portion in all user sectors. Therefore, energy conservation in building is important to get higher energy standard in the country. Retail and wholesale building consume high electricity. Energy consumption ratio in this building type is 40% Air conditioning, 28% Refrigeration, 12% lighting and 20% from the other. Those element need to be focused. This research is an optimization of air conditioning design and building envelope with operation schedule, refrigeration and lighting system. The objective is to find out optimization design to minimize total cost. The design criteria is to maintain requirement at day time whereas to response refrigeration system at all night. The developed designed is interacted between building system and building envelop. Case study is retail and wholesale building in Thailand. The design with life time of the machine, replacement cost and energy consumption of each option will be used to evaluate total life cycle cost. This study results in the total life cycle cost of new model of 1,014.14 M Baht comparing with 1,207.91 M Baht of conventional design. It has been saved 193.76 M Baht or 16% for 30 years. Therefore, the benefit of new improvement is very high and helps building owner to save a huge amount of money.

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Section: Methodsmentioning

confidence: 99%

Optimum Design of Retail and Wholesale Building for Minimum Energy Consumption and Total Cost

Watcharapongvinij¹,

Therdyothin²

2019

IJEEP

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“…His publication can serve as a method-ology for building own by owners/investors to predict future maintenance costs. The projection of life-cycle maintenance costs has also been addressed by Karásek (2018) [32].…”

Section: Literature Reviewmentioning

confidence: 99%

Investing in Real Estate in the Czech Republic and Analyzing the Dependence of Profitability and Technical and Socio-Economic Factors

Hromada

Krulický

2021

Sustainability

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This article deals with the study of the dependence between selected technical and socioeconomic factors in the real estate market that affects the return on investment. These factors include the average annual rental yield, sale/rental price for an apartment, the number of ads related to the sale/rental of apartments per 1000 inhabitants, the number of new apartment ads per 1000 inhabitants, and the share of persons facing distraint. Data from the EVAL software were used for calculation. EVAL software was developed by one of the authors of this article and allows the collecting of advertisements promoting real estate for sale and rental in the Czech Republic. This article uses data for individual districts in the Czech Republic. The article uses the methods of descriptive and mathematical statistics. The dependencies between technical and economic parameters are investigated using regression analysis. Significant dependencies were identified between the following parameters: Between selling price of an apartment and the average annual rental yield; Between the average annual rental yield and the average number of months needed to pay for the apartment; Between the average annual rental yield and the share of individuals facing distraint, and between the selling price of an apartment and the price of an apartment for rent.

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“…Lucchi et al [12] M H R (historical) Mora et al [13] F H NR (school) D'Agostino et al [14] F/M H NR (school) Karásek et al [15] M H/DHW R/NR Bonakdar et al [16] F H/DHW R (multistory) Carpino et al [17] M H/C/DHW R (social housing) Loukaidou et al [18] F H/C R/NR (nZEB) Aelenei et al [19] Not indicated H/C/DHW NR (office) D'Agostino&Parker [20] F H/C/DHW/A R (two-story) Stevanović [21] Not indicated H/C NR (office) Baglivo et al [22] F/M H/C/DHW/A R (single-story) Zacà et al [23] M H/C/DHW/A R (multistory) Brandão De Vasconcelos [24] F/M H/C/DHW R (existing)…”

Section: Economic Scenario Energy Services Building Typologymentioning

confidence: 99%

“…A school building was also investigated in [14] to define the optimum insulation thickness and the best glazing system by locating the edifice in a mountain city of South Italy. In [15], specific EEMs were contemplated for a Czech building stock, creating the basis for calculating the cost-effective solution at a national level. Finally, a study concerning the renovation of Swedish multistory buildings is reported in [16] by considering only heating and domestic hot water production, however, no information was provided for the design of new structures.…”

Section: Introductionmentioning

confidence: 99%

The Cost-Optimal Analysis of a Multistory Building in the Mediterranean Area: Financial and Macroeconomic Projections

et al. 2020

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Cost-optimal analysis was pointed out in the 2010/31 European Directive as a tool to evaluate the achievable building energy performance levels as a function of the corresponding costs. These analyses can be carried out by a financial projection for private investors and a macroeconomic approach to establish the minimal energy performance levels. Consequently, the financial projection provides different results that could stimulate private investors toward other cost-optimal solutions that do not match the minimal energy performance levels. For this purpose, both the projections were analyzed in the BEopt environment, developed by NREL, on a multistory building located in two contrasting climatic zones of the Mediterranean area, one cold and the other warm, highlighting the differences. The cost-optimal solutions were identified by a parametric study involving measures that affect thermal losses and solar gains, whereas the air-conditioning plant was left unchanged in order to include a fraction of renewable energy in the coverage of the building demands. Results showed that both the projections produced the same cost-optimal solutions, however, the latter matches the building designed to fulfill the minimal energy performance levels only in the cold climate. Conversely, noticeable deviations were detected in the warm location, therefore minimal energy performance levels should be revised, with preference for less insulated opaque surfaces and better performing glazing systems. Moreover, the macroeconomic scenario returns a more limited distance between the minimal energy performance levels and the cost-optimal solutions, therefore, it is far from the real economic frame sustained by private investors. in more favorable outcomes despite a slight increase in running (operating) costs. Consequently, the building-plant system with the lowest energy demand represents the cost-optimal solution; conversely the latter can be identified as a favorable balance point between energy consumption, investment and operational costs [7]. The 2010/31 EU directive represents the first attempt for the definition of a comparative methodological framework for the calculation of the optimal energy performance levels as a function of the costs, with reference to new and existing buildings [8]. The procedure cannot be generalized across Europe, therefore Member States have to adapt it to the climatic context, the accessibility to the energy infrastructures and the local market. In order to overcome these drawbacks, appropriate guidelines (Regulation 244) [9] were formulated to support the implementation of the cost-optimal procedure in every country by different steps:

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Cost optimum calculation of energy efficiency measures in the Czech Republic

Cited by 22 publications

References 15 publications

Optimum Design of Retail and Wholesale Building for Minimum Energy Consumption and Total Cost

Optimum Design of Retail and Wholesale Building for Minimum Energy Consumption and Total Cost

Investing in Real Estate in the Czech Republic and Analyzing the Dependence of Profitability and Technical and Socio-Economic Factors

The Cost-Optimal Analysis of a Multistory Building in the Mediterranean Area: Financial and Macroeconomic Projections

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