Results 21 to 30 of about 89,592 (288)

A novel method of acquiring geothermal energy from unconsolidated sandstone reservoir by multi-directional wells deep borehole heat exchanger

open access: yesCase Studies in Thermal Engineering, 2021
The clogging problem during injection seriously limits the development and utilization of geothermal resources in unconsolidated sandstone area.
Yanxin Wang, Xianbiao Bu
doaj   +1 more source

Maize silage for dairy cows: mitigation of methane emissions can be offset bij and use change [PDF]

open access: yes, 2006
Increasing the digestibility of cattle rations by feeding grains and whole plant silages from maize have been identified as effective options to mitigate greenhouse gas emissions. The effect of ploughing grassland for maize crops have not been taken into
Goldacre, MJ   +4 more
core   +1 more source

An Economic analysis of the Luminaire-Level control of LED lighting in small office

open access: yesJournal of Asian Architecture and Building Engineering, 2022
The objective of this study is to perform an economic analysis of the luminaire-level control of LED lighting in a small office. For this, energy consumption and illuminance were measured for one year in a space where the luminaire-level controller of ...
Hye-Jin Kim, in-Ho Yang
doaj   +1 more source

Estimating the engineering and technical performances for the stage thermal circuit of turbine unit operating on low-boiling working media [PDF]

open access: yes, 2017
Представлены результаты технико-экономического анализа по оценке величины инвестиций и сроков окупаемости внедрения двухкаскадной когенерационной установки малой мощности на низкокипящем рабочем теле, с целью реализации стратегии "биоэнергетического ...
Бабак, Николай Юрьевич   +3 more
core   +1 more source

A three-stage optimization methodology for envelope design of passive house considering energy demand, thermal comfort and cost [PDF]

open access: yes, 2020
Due to reducing the reliance of buildings on fossil fuels, Passive House (PH) is receiving more and more attention. It is important that integrated optimization of passive performance by considering energy demand, cost and thermal comfort.
Feng, W, Lu, S, Wang, R
core  

PAYBACK PERIOD ANALYSIS OF DISTANCE MASTER EDUCATION IN INDONESIA

open access: yesTRIKONOMIKA, 2023
Research on the rate of return on the learning process in distance higher education aims to measure the level of learning investment in post graduate program distance education. The method used in this research is descriptive research with a quantitative approach.
Taufani Kurniatun   +2 more
openaire   +1 more source

The Improvement of the Methodological Approaches to Calculating the Payback Period for Investment in order to Estimate Expenses on Establishing the Economic Security Service of an Enterprise [PDF]

open access: yesProblemi Ekonomiki, 2018
The aim of the article is to improve the methodological approaches to calculating the payback period for investment in order to determine the payback period for expenses on establishing the economic security service of an enterprise. It is found that the
Melikhova Tetiana O.
doaj  

Low-Cost Smart Farm Irrigation Systems in Kherson Province: Feasibility Study

open access: yesAgronomy, 2022
The growth of the world population requires an increase in food production. Its solution requires the introduction of advanced technologies, including automated irrigation systems.
Oleg Bazaluk   +4 more
doaj   +1 more source

Quantifying the Economic Case for Electric Semi-Trucks

open access: yes, 2018
There has been considerable interest in the electrification of freight transport, particularly heavy-duty trucks to downscale the greenhouse-gas (GHG) emissions from the transportation sector. However, the economic competitiveness of electric semi-trucks
Sripad, Shashank   +1 more
core   +2 more sources

A Review of Roofing Methods: Construction Features, Heat Reduction, Payback Period and Climatic Responsiveness

open access: yesEnergies, 2018
The roofs of buildings play an essential role in energy efficiency because a significant amount of solar radiation is absorbed by roofs in hot weather and a significant amount of heat is lost through roofs in cold weather.
Majed Abuseif, Zhonghua Gou
doaj   +1 more source

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