scholarly journals Underground houses - systematic approach toward underground construction of living space

2018 ◽  
Vol 6 (3) ◽  
pp. 1-9
Author(s):  
Lulzim Beqiri ◽  
Zejnulla Rexhepi ◽  
Mimoza Sylejmani ◽  
Besian Sinani
Keyword(s):  
Energy Efficiency ◽  
Global Warming ◽  
Climate Changes ◽  
Systematic Approach ◽  
Current Development ◽  
Underground Construction ◽  
Living Space ◽  
Energy Consumption Reduction ◽  
Consumption Reduction ◽  
Different Shapes

The urgent need for energy consumption reduction and trends of global warming leads toward exploring possibilities to “hide” living space from explosion to climate changes as a result of global warming. This paper aims to present benefits of underground houses, underground living space. Housing is elementary process of mankind life that was performed from the existence of life in different forms, shapes, levels and social developments. House, as one used to get protected by phenomena of the nature, historically used in different shapes, levels and materials, created mentality that one percept as protective, and isolated space, for life activities. This paper treat possibilities, and priorities, of underground housing and construction of underground house in current development of technology, climate development impact, current development of mentality of society and approach of society toward energy efficiency, as underground house is one of the contribution. Paper as well analyze applicable standards and current legislation in Kosova for underground construction and housing.

scholarly journals Energy Consumption Reduction of a Chiller Plant by Adding Evaporative Pads to Decrease Condensation Temperature

Energies ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2218
Author(s):  
Francisco J. Rey Martínez ◽  
Julio F. San José Alonso ◽  
Eloy Velasco Gómez ◽  
Ana Tejero González ◽  
Paula M Esquivias ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Savings ◽  
High Energy ◽  
Condensation Temperature ◽  
Efficiency Ratio ◽  
Energy Consumption Reduction ◽  
Consumption Reduction ◽  
Load Characteristics ◽  
Installed Capacity

The high energy consumption of cooling systems justifies the need for strategies to increase the efficiency of the facilities, in order to reduce the related CO2 emissions. This study aims to improve the performance and reduce the energy consumption of an 8.6 MW air cooled chiller. This installed capacity is biased due to the screw compressors, of 2.98 Energy Efficiency Ratio (EER) at full load (characteristics provided by the manufacturer). The chiller unit has been modified by placing evaporating cooling pads before the condensing coils. The chiller has been monitored for three months, recording over 544,322 measurements (5 min-step data), with and without the evaporative cooling pads, to assess the performance. Data comparison has been done by selecting two days (with and without evaporative panels) with the same health care load and temperatures. Implementing the proposed strategy yields an improvement in the European Seasonal Energy Efficiency Ratio (ESEER) from 3.69 to 4.83, while the Total Equivalent Warming Impact (TEWI) decreases about 1000 tCO2. Energy savings of up to 32.6 MWh result into a payback period lower than 2 years.

scholarly journals Underground houses - systematic approach toward underground construction of living space

2017 ◽  
Author(s):  
Lulzim Beqiri ◽  
Zejnulla Rexhepi ◽  
Mimoza Sylejmani ◽  
Besian Sinani ◽  
Hamide Ibrahimi ◽  
...  
Keyword(s):  
Systematic Approach ◽  
Underground Construction ◽  
Living Space

scholarly journals Benchmarking, Standard Setting and Energy Conservation of Olefin Plants in Iran

2021 ◽  
Vol 15 ◽  
pp. 7-14
Author(s):  
S. Gowharifar ◽  
B. Sepehrian ◽  
G. Nasiri ◽  
A. Khoshgard ◽  
M. Momenifar
Keyword(s):  
Energy Efficiency ◽  
Sustainable Development ◽  
Energy Consumption ◽  
Energy Conservation ◽  
Cost Reduction ◽  
Process Integration ◽  
Energy Consumption Reduction ◽  
Consumption Reduction ◽  
The World ◽  
Petrochemical Company

Olefin plants are one of the most energy intensive petrochemical plants in the world [1, 2]. In Iran more than 15% of petrochemical products are olefins and it will increase rapidly during next future, so improvement of energy efficiency in olefin plants is key element in NPC (Iranian National Petrochemical Company) plan for cost reduction and sustainable development. In this paper the energy consumption of existing olefin plants are compared with design condition and also world best technology. This comparison indicates the meaningful gap between operational and best condition. In this study the opportunities of energy saving in olefin plants are investigated using process integration tools and benchmarking. The result of this study indicates there is potential for energy consumption reduction up to 25% in Iranian olefin plants.

scholarly journals Increasing Energy Efficiency and Productivity of the Comminution Process in Tumbling Mills by Indirect Measurements of Internal Dynamics—An Overview

Energies ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 6735
Author(s):  
Mateusz Góralczyk ◽  
Pavlo Krot ◽  
Radosław Zimroz ◽  
Szymon Ogonowski
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Optimal Size ◽  
Internal Dynamics ◽  
Industrial Sectors ◽  
Energy Consumption Reduction ◽  
Comminution Process ◽  
Consumption Reduction ◽  
Tumbling Mills ◽  
And Control

Tumbling mills have been widely implemented in many industrial sectors for the grinding of bulk materials. They have been used for decades in the production of fines and in the final stages of ore comminution, where optimal levels for the enrichment particles’ sizes are obtained. Even though these ubiquitous machines of relatively simple construction have been subjected to extensive studies, the industry still struggles with very low energy efficiency of the comminution process. Moreover, obtaining an optimal size for the grinding product particles is crucial for the effectiveness of the following processes and waste production reduction. New, innovative processing methods and machines are being developed to tackle the problem; however, tumbling mills are still most commonly used in all ranges of the industry. Since heavy equipment retrofitting is the most costly approach, process optimization with dedicated models and control systems is the most preferable solution for energy consumption reduction. While the classic technological measurements in mineral processing are well adopted by the industry, nowadays research focuses on new methods of the mill’s internal dynamics analysis and control. This paper presents a retrospective overview of the existing models of internal load motion, an overview of the innovations in process control, and some recent research and industrial approaches from the energy consumption reduction point of view.

scholarly journals Energy Assessment of Sorghum Cultivation in Southern Ukraine

Agriculture ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 695
Author(s):  
Oleg Bazaluk ◽  
Valerii Havrysh ◽  
Mykhailo Fedorchuk ◽  
Vitalii Nitsenko
Keyword(s):  
Energy Efficiency ◽  
Total Energy ◽  
Climate Changes ◽  
Field Experiments ◽  
Renewable Energy Sources ◽  
Grain Sorghum ◽  
Mineral Fertilizers ◽  
Efficiency Ratio ◽  
Energy Inputs ◽  
Southern Ukraine

Global climate changes and fossil fuel reserve depletion are drivers for the search for environmentally friendly renewable energy sources. In Europe, biomass represents the main alternative to fossil fuels. Among energy crops, sorghum is a promising crop for arid regions. The biomass yield and energy efficiency of sorghum (both silage and grain) were studied based on field experiments conducted in Southern Ukraine. The following climate changes were identified: an increase in temperature and a decrease in precipitation. The total energy inputs for sweet sorghum were estimated at 11.256 GJ/ha. The main contributors to the energy inputs are mineral fertilizers (56.99%). The experiment showed that a yield of 40.6 t/ha could be achieved with annual precipitation of 350 mm. The energy efficiency ratio was determined to be 11.18. The total energy inputs for grain sorghum was 16.081 GJ/ha. Its yield (grain) varied from 1.92 to 7.05 t/ha. The energy efficiency ratio of grain sorghum ranged from 2.8 to 16.7.

scholarly journals d4PDF: large-ensemble and high-resolution climate simulations for global warming risk assessment

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Masayoshi Ishii ◽  
Nobuhito Mori
Keyword(s):  
Risk Assessment ◽  
Global Warming ◽  
High Resolution ◽  
Climate Changes ◽  
Future Climate ◽  
Atmospheric Models ◽  
Large Ensemble ◽  
Past Climate ◽  
The Past ◽  
Climate Simulations

Abstract A large-ensemble climate simulation database, which is known as the database for policy decision-making for future climate changes (d4PDF), was designed for climate change risk assessments. Since the completion of the first set of climate simulations in 2015, the database has been growing continuously. It contains the results of ensemble simulations conducted over a total of thousands years respectively for past and future climates using high-resolution global (60 km horizontal mesh) and regional (20 km mesh) atmospheric models. Several sets of future climate simulations are available, in which global mean surface air temperatures are forced to be higher by 4 K, 2 K, and 1.5 K relative to preindustrial levels. Nonwarming past climate simulations are incorporated in d4PDF along with the past climate simulations. The total data volume is approximately 2 petabytes. The atmospheric models satisfactorily simulate the past climate in terms of climatology, natural variations, and extreme events such as heavy precipitation and tropical cyclones. In addition, data users can obtain statistically significant changes in mean states or weather and climate extremes of interest between the past and future climates via a simple arithmetic computation without any statistical assumptions. The database is helpful in understanding future changes in climate states and in attributing past climate events to global warming. Impact assessment studies for climate changes have concurrently been performed in various research areas such as natural hazard, hydrology, civil engineering, agriculture, health, and insurance. The database has now become essential for promoting climate and risk assessment studies and for devising climate adaptation policies. Moreover, it has helped in establishing an interdisciplinary research community on global warming across Japan.

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