scholarly journals Method for Cost-Benefit Analysis of Improved Indoor Climate Conditions and Reduced Energy Consumption in Office Buildings

Energies ◽  
2013 ◽  
Vol 6 (9) ◽  
pp. 4591-4606 ◽  
Author(s):  
Rokas Valancius ◽  
Andrius Jurelionis ◽  
Viktoras Dorosevas
2020 ◽  
Vol 12 (15) ◽  
pp. 6156
Author(s):  
Nataša Šuman ◽  
Mojca Marinič ◽  
Milan Kuhta

Sustainable development is a priority for the future of our society. Sustainable development is of particular importance to the Architecture, Engineering, and Construction (AEC) industry, both for new buildings and for the renovation of existing buildings. Great potential for sustainable development lies in the renovation of existing office buildings. This paper introduces a new framework for identifying the best set of renovation strategies for existing office buildings. The framework applies selected green building rating system criteria and cost-effective sustainable renovation solutions based on cost-benefit analysis (CBA), and thus provides a novelty in decision-making support for the sustainable renovation of office buildings at an early-stage. The framework covers all necessary steps and activities including data collection, determination of the required level of renovation, selection of the green building rating system, identification of impact categories and criteria, and final evaluation and decision-making using CBA. The framework can be used in conjunction with different systems and according to different regional characteristics. The applicability of the addressing procedure is shown through a case study of a comprehensive renovation of an office building in the city of Maribor.


Author(s):  
Mohamed Hassan Dahab ◽  
Elwaleed M. H. Basheeir ◽  
Omer Ahmed Abdallah

The main objectives of this study were to determine and analyze energy use efficiency in sugar beet production, and to make cost-benefit analysis in Guneid area - Sudan. An experiment was carried out using three tillage implements (disc plough, disc harrow and ridger) for land preparation, seven days irrigation interval and mechanical planter. The treatments were replicated four times in a completely randomized block design. The results showed that total energy consumption in sugar beet production was 35099.20MJha-1, out of which 52.33% of fertilizer energy, 18.0% water energy and 9.0% of diesel energy. The energy use ratio was 28.71 and energy productivity was 1.71kgMJha-1. The results also showed that 73.6% of total energy input was in non-renewable energy form, and only 26.4% was in renewable form, while 34.1% was in from of direct energy and 65.9% indirect energy. Cost-Benefit analyses showed that the total return, net return, benefit–cost ratio and productivity of crop were 2689.6 US$ha-1, 990.8 US$ha-1, 1.58. and 35.3kgUSD-1 respectively. Although large amounts of energy consumption for sugar beet production increased the yield, it also caused in problems related to environmental pollution, land degradation, nutrient loading and pesticide toxicity. Therefore, it is important to look for methods and systems that can reduce the negative effect of high energy inputs and to develop more efficient, economical and environmentally friendly agricultural production systems that increase energy use efficiency and crop yield.


Energies ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 921 ◽  
Author(s):  
Wilfredo C. Flores ◽  
Benjamin Bustamante ◽  
Hugo N. Pino ◽  
Ameena Al-Sumaiti ◽  
Sergio Rivera

The high consumption of firewood in Honduras necessitates the search for alternatives with less-negative effects on health, the economy, and the environment. One of these alternatives has been the promotion of improved cooking stoves, which achieve a large reduction in firewood consumption. This paper presents a cost-benefit analysis for an improved cooking stove adoption strategy for Honduras. The methodology uses the Long-range Energy Alternatives Planning System, LEAP, a tool used globally in the analysis and formulation of energy policies and strategies. The energy model considers the demand for firewood as well as the gradual introduction of improved cooking stoves, according to the premises of a National Strategy for improved cooking stoves adoption in Honduras. Hence, it is demonstrated that the costs of implementing this adoption strategy are lower than the costs of not implementing it, taking into consideration representative scenarios up to and including the year 2030.


2014 ◽  
Vol 76 ◽  
pp. 558-564 ◽  
Author(s):  
Hadas Gabay ◽  
Isaac A. Meir ◽  
Moshe Schwartz ◽  
Elia Werzberger

Author(s):  
R.K. Kulkarni ◽  
I.H. Patel ◽  
R.D. Bothe ◽  
P.P. Vyavahare

<div><p>Evaporative cooler operating on solar energy is a viable option in places where there is scarcity of grid power and is also useful for short term storage of farm products. This paper analyzes the performance of a commercial cooler operated on the solar power and its cost benefit analysis. The cooler is operated on grid power in first part and on solar power in second part. The saturation efficiency, cooling capacity and the energy consumption is calculated in both the cases. The efficiency ranged from 41 to 70 %, cooling capacity from 4625 to 12079 kJ/h and energy consumption from 0.113 to 0.184 kW. The cost benefit analysis gives a payback period of about 11.5 seasons for the cooler if used for only comfort. If the cooler is used continuously for short term storage of farm products, then the payback period is estimated to be of 21.5 months. The optimization of solar panel, battery and inverter cost is suggested to have the early pay back of the investment cost. The cooler installation is recommended in place where there is shortage or frequent fluctuation of grid power.<em></em></p></div>


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