Results 21 to 30 of about 249,548 (304)

FAST-AIR: Fast analytic systems for tracer-gas assessment in indoor research - development and testing of CO2 tracer-gas system [PDF]

open access: yesE3S Web of Conferences
The time constant of ventilation of rooms in buildings is between 15 minutes (in office spaces) to 2 hours (in residential buildings). Currently, most of the tracer gas system analyzers on the market have a minute-based time constant and depending on the
Andersson Harald   +4 more
doaj   +1 more source

Ammoniacal nitrogen removal by Eichhornia crassipes-based phytoremediation: process optimization using response surface methodology

open access: yesApplied Water Science, 2020
Eutrophication is a serious environmental issue that needs urgent concern. There is necessity to treat wastewater with high ammoniacal nitrogen (AN) concentration to the permissible standard limit to protect the aquatic ecosystem. This study investigated
W. H. T. Ting   +3 more
doaj   +1 more source

Multiobjective assessment of distributed energy storage location in electricity networks

open access: yesInternational Journal of Sustainable Energy, 2017
This paper presents a methodology to provide information to a decision maker on the associated impacts, both of economic and technical nature, of possible management schemes of storage units for choosing the best location of distributed storage devices ...
José António Ribeiro Gonçalves   +2 more
doaj   +1 more source

Assessing airborne infection risk through a model of airflow evacuation and recirculation dynamics [PDF]

open access: yesE3S Web of Conferences
In a ventilated room, the indoor airflows are complicated but can generally be defined by an internal recirculating airflow generated by flooding of ventilation air. This concept categorizes the internal room flow (air and contaminants) as consist of two
Kabanshi Alan   +4 more
doaj   +1 more source

Theoretical Analysis on the Economic Performance of Micro Gas Turbine-Trigeneration System with Different Operation Strategies for Residential Building in a Tropical Region

open access: yesMATEC Web of Conferences, 2016
This study investigates how operation strategies of micro gas turbine trigeneration system (MGTTGS) affect its economic performance. MGT-TGS was required to sustain power, heating and cooling load of 148 residential terrace houses located in Kuala Lumpur.
Basrawi Firdaus   +3 more
doaj   +1 more source

Sustainable irrigation based on co-regulation of soil water supply and atmospheric evaporative demand

open access: yesNature Communications, 2021
Irrigation is the most important use of water. A newly developed irrigation management scheme leads to a significant reduction in water use and increase in economic gains while maintaining crop yields, presenting opportunities for real-world impacts ...
Jingwen Zhang   +14 more
doaj   +1 more source

Sustainable energy [PDF]

open access: yesAustralasian Journal of Environmental Management, 2020
The International Renewable Energy Agency (IRENA) reported that the modern renewable energy share by 2050 would increase to 66 percent of global final energy consumed (IRENA 2020).
openaire   +3 more sources

Environmental Sustainability Approaches and Positive Energy Districts: A Literature Review

open access: yes, 2021
During the last decade, increasing attention has been paid to the emerging concept of Positive Energy Districts (PED) with the aim of pushing the transition to clean energy, but further research efforts are needed to identify design approaches optimized ...
Francesco Guarino   +3 more
core   +1 more source

Environmental Energy Sustainability at Universities

open access: yes, 2020
The use of renewable energies and energy saving and efficiency are needs of global society and universities. Universities have a large responsibility and social impact, as they are an example and engine of social change.
Francisco G. Montoya   +1 more
core   +1 more source

Kinetic Study & Statistical Modelling of Sarawak Peat Water Electrocoagulation System using Copper and Aluminium Electrodes

open access: yesJournal of Applied Science & Process Engineering, 2020
Due to insufficient water supply, the residents of the rural area of Sarawak are forced to use peat water as daily use for domestic water. The consumption of untreated peat water can lead to various waterborne diseases such as diarrhoea, and other ...
Nazeri Abdul Rahman   +7 more
doaj   +1 more source

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