Results 81 to 90 of about 522,153 (213)

Jerusalem Artichoke: Energy Balance in Annual and Perennial Cropping Systems—A Case Study in North-Eastern Poland

open access: yesEnergies
This article presents the results of a three-year experiment (2018–2020) conducted at the Agricultural Experiment Station in Bałcyny (north-eastern Poland) with the aim of determining Jerusalem artichoke (JA) yields and the energy balance of biomass ...
Krzysztof Józef Jankowski   +1 more
doaj   +1 more source

Changes in energy efficiency in Australia: A decomposition of aggregate energy intensity using Logarithmic Mean Divisia approach

open access: yes
This paper provides an empirical estimation of energy efficiency and other proximate factors that explain energy intensity in Australia for the period 1978-2009.
Alam, Khorshed, Shahiduzzaman, Md
core  

Research on performance ratio composition and standard energy efficiency ratio correction method of photovoltaic power station

open access: yesJournal of Physics: Conference Series
Abstract The performance ratio (PR) of the system is used to quantify the power generation efficiency of the photovoltaic power generation system. The size of the index is affected by many factors. After the environmental impact is compensated, the standard energy efficiency ratio (PRstc) of the system is obtained.
Yonglong Peng   +4 more
openaire   +1 more source

Increasing effectiveness and efficiency of product energy policy

open access: yes, 2014
Energy efficiency improvements in end-uses constitute a large potential to curb primary energy demand into a more sustainable direction. This thesis addresses some of the challenges for policy measures that tap into that potential (minimum efficiency ...
Energy and Resources   +2 more
core  

Investigation of a high efficiency low emissions gas engine

open access: yes, 1994
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The purpose of this project was to optimise a diesel engine converted to operate on natural gas, to suit the requirements for: low emissions, a high ...
Mendis, Karl Joseph Sean
core  

Compression ratio effect on methane HCCI combustion [PDF]

open access: yes, 1998
We have used the HCT (Hydrodynamics, Chemistry and Transport) chemical kinetics code to simulate HCCI (homogeneous charge compression ignition) combustion of methane-air mixtures.
Pitz, W.   +3 more
core  

BUILDING ENERGY EFFICIENCY IN GUANGDONG PROVINCE, CHINA

open access: yes, 2019
Because of irreversibility on building construction, building energy efficiency design is more depended on simulation technology. Ministry of Housing and Urban-Rural Development of China also stated that China's building energy consumption accounted for ...
Chao Luo   +7 more
core   +1 more source

Demand-side management strategies and the residential sector: Lessons from international experience

open access: yes, 2010
This paper explores demand side management (DSM) strategies, including both demand response and energy efficiency policies. The aim is to uncover what features might strengthen DSM effectiveness. We first look at key features of residential energy demand
Pollitt, Michael G   +7 more
core   +1 more source

Microalgae to energy: biomass recovery and pre-treatments optimisation for biogas production integrated with wastewater nutrients removal [PDF]

open access: yes, 2014
The increasing concern about water quality and energy demand promotes the development of innovative and low-cost processes to improve the nutrient uptake and energy efficiency of existing wastewater treatments (WWT).
Ometto, Francesco
core  

A nonparametric analysis of the Greek renewable energy sector

open access: yes
This paper applies a bootstrapped Data Envelopment Analysis (DEA) formulation aiming to evaluate the financial performance of the firms operating in the Greek renewable energy sector.
Halkos, George, Tzeremes, Nickolaos
core  

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