U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Journal name Applied energy Remove constraint Journal name: Applied energy Publication year rev 7987-2013 Remove constraint Publication year rev: 7987-2013 Source 2013 v.112 no. Remove constraint Source: 2013 v.112 no.
Start Over

Search

169  Search Results

« Previous | 1 - 20 of 169 |
Number of results to display per page

Search Results

1. A flameless catalytic combustion-based thermoelectric generator for powering electronic instruments on gas pipelines

Author:
Heng Xiao; Kuanrong Qiu; Xiaolong Gou; Qiang Ou
Source:
Applied energy 2013 v.112 no. pp. 1161-1165
ISSN:
0306-2619
Subject:
asbestos; batteries; combustion; generators (equipment); heat transfer; insulating materials; lead; pipelines; temperature
Abstract:
... This paper presents a flameless catalytic combustion-based thermoelectric power generator that uses commercial thermoelectric modules. The structure of the thermoelectric generator (TEG) is introduced and the power performance is measured based on a designed circuit system. The open circuit voltage of the TEG is about 7.3V. The maximum power output can reach up to 6.5W when the load resistance mat ...
DOI:
10.1016/j.apenergy.2013.01.078

2. A new method to determine thermophysical properties of PCM-concrete brick

Author:
Rui Cheng; Michal Pomianowski; Xin Wang; Per Heiselberg; Yinping Zhang
Source:
Applied energy 2013 v.112 no. pp. 988-998
ISSN:
0306-2619
Subject:
algorithms; bricks; energy conservation; phase transition; specific heat; system optimization; temperature; thermal conductivity
Abstract:
... Accurate measurement of thermophysical properties of PCM-concrete brick is very important for simulation and evaluation of its energy saving performance. However, there is currently no effective way to accurately measure thermophysical properties of PCM-concrete brick. First we analyzed the shortcomings of using traditional testing methods to measure thermophysical properties of PCM-concrete brick ...
DOI:
10.1016/j.apenergy.2013.01.046

3. A three-dimensional study on methane hydrate decomposition with different methods using five-spot well

Author:
Yi Wang; Xiao-Sen Li; Gang Li; Yu Zhang; Bo Li; Jing-Chun Feng
Source:
Applied energy 2013 v.112 no. pp. 83-92
ISSN:
0306-2619
Subject:
ambient temperature; heat; methane; porous media
Abstract:
... The cubic hydrate simulator (CHS) is used to study the methane hydrate production behaviors in porous media with three different methods, which are the depressurization (DP) using a single well, the heat stimulation using five-spot well (HS-5S), and the heat stimulation in conjunction with depressurization using five-spot well (H&D-5S), respectively. During these experiments, the initial hydrate s ...
DOI:
10.1016/j.apenergy.2013.05.079

4. Analysis of short helical and double U-tube borehole heat exchangers: A simulation-based comparison

Author:
Angelo Zarrella; Antonio Capozza; Michele De Carli
Source:
Applied energy 2013 v.112 no. pp. 358-370
ISSN:
0306-2619
Subject:
electronic circuits; energy; heat exchangers; heat tolerance; heat transfer; mathematical models; thermal properties; weather
Abstract:
... This paper makes a comparative analysis between a helical-shaped pipe and a double U-tube ground heat exchanger. The two configurations were installed at a shallow depth and studied, since a depth limit is mandatory in some areas. When installed this way, the interaction between the ground surface and the ambient environment needs to be taken into account when the thermal behaviour of the ground h ...
DOI:
10.1016/j.apenergy.2013.06.032

5. Bioavailability of cobalt and nickel during anaerobic digestion of sulfur-rich stillage for biogas formation

Author:
Jenny Gustavsson; Sepehr Shakeri Yekta; Carina Sundberg; Anna Karlsson; Jörgen Ejlertsson; Ulf Skyllberg; Bo H. Svensson
Source:
Applied energy 2013 v.112 no. pp. 473-477
ISSN:
0306-2619
Subject:
Methanomicrobiales; Methanosarcinales; X-ray absorption spectroscopy; anaerobic digestion; bioavailability; biogas; cobalt; community structure; methane production; microbial communities; microorganisms; nickel; organic matter; pH; quantitative polymerase chain reaction; sulfides; sulfur; volatile fatty acids
Abstract:
... Addition of Co and Ni often improves the production of biogas during digestion of organic matter, i.e. increasing CH₄-production, process stability and substrate utilization which often opens for higher organic loading rates (OLRs). The effect of Co and Ni addition was evaluated by measuring methane production, volatile solids reduction, pH and concentration of volatile fatty acids (VFAs). A serie ...
DOI:
10.1016/j.apenergy.2013.02.009

6. Business models for full service energy renovation of single-family houses in Nordic countries

Author:
Krushna Mahapatra; Leif Gustavsson; Trond Haavik; Synnøve Aabrekk; Svend Svendsen; Lies Vanhoutteghem; Satu Paiho; Mia Ala-Juusela
Source:
Applied energy 2013 v.112 no. pp. 1558-1565
ISSN:
0306-2619
Subject:
business enterprises; consumers (people); energy conservation; energy efficiency; funding; markets; models; primary energy; quality control; Scandinavia
Abstract:
... In Nordic countries significant primary energy saving potential exists in houses built before 1980. These old houses need to be renovated, which provides an opportunity for implementation of energy efficiency measures. However, there are several economic and market hindrances and the renovation markets are dominated by handicraft-based individual solutions. In this paper we have analyzed the oppor ...
DOI:
10.1016/j.apenergy.2013.01.010

7. CFD analysis of a heat transfer device integrated wind tower system for hot and dry climate

Author:
John Kaiser Calautit; Ben Richard Hughes; Hassam Nasarullah Chaudhry; Saud Abdul Ghani
Source:
Applied energy 2013 v.112 no. pp. 576-591
ISSN:
0306-2619
Subject:
air flow; air temperature; buildings; climate; cooling; cooling systems; funding; guidelines; heat transfer; mathematical models; natural ventilation; renewable energy sources; stream flow; vertical integration; wind speed
Abstract:
... Increasing emphasis on reducing power consumption has raised public awareness of natural and renewable energy resources, particularly the integration of natural ventilation systems in buildings such as wind towers. The aim of this work is to incorporate heat transfer devices in a wind tower to meet the internal comfort criteria in extreme external conditions. Heat transfer devices were installed i ...
DOI:
10.1016/j.apenergy.2013.01.021

8. Carbon dioxide conversion to fuels and chemicals using a hybrid green process

Author:
Karthikeyan D. Ramachandriya; Dimple K. Kundiyana; Mark R. Wilkins; Jennine B. Terrill; Hasan K. Atiyeh; Raymond L. Huhnke
Source:
Applied energy 2013 v.112 no. pp. 289-299
ISSN:
0306-2619
Subject:
Clostridium; acetic acid; bacteria; butyric acid; carbon dioxide; corn steep liquor; cottonseed; ethanol; ethanol production; fermentation; fuels; hexanoic acid; hydrogen; nutrient content; seed extracts
Abstract:
... A unique hybrid technology that uses renewable hydrogen (H₂) and carbon dioxide (CO₂) sequestered from large point sources, to produce fuels and chemicals has been proposed and tested. The primary objective of this research was to determine the feasibility of using two acetogenic bacteria to metabolize H₂ and CO₂ for the production of ethanol. Three experiments were conducted in small scale reacto ...
DOI:
10.1016/j.apenergy.2013.06.017

9. Carbon footprint of a reflective foil and comparison with other solutions for thermal insulation in building envelope

Author:
Stefania Proietti; Umberto Desideri; Paolo Sdringola; Francesco Zepparelli
Source:
Applied energy 2013 v.112 no. pp. 843-855
ISSN:
0306-2619
Subject:
buildings; carbon dioxide; carbon footprint; climate change; computer software; construction materials; cooling; developmental stages; ecosystem services; energy; energy resources; environmental impact; environmental performance; foil; greenhouse gas emissions; heat; insulating materials; materials life cycle; models; neutralization; product system; raw materials
Abstract:
... The present study aims at assessing environmental and energy compatibility of different solutions of thermal insulation in building envelope. In fact a good insulation results in a reduction of heating/cooling energy consumptions; on the other hand construction materials undergo production, transformation and transport processes, whose energy and resources consumptions may lead to a significant de ...
DOI:
10.1016/j.apenergy.2013.01.086

10. Characterization and experimental investigation of phase change materials for chilled food refrigerated cabinet applications

Author:
W. Lu; S.A. Tassou
Source:
Applied energy 2013 v.112 no. pp. 1376-1382
ISSN:
0306-2619
Subject:
chilled foods; cold storage; energy; equipment; heat; refrigeration; supercooling; temperature
Abstract:
... There is increasing interest in using phase change materials (PCMs) to store energy within refrigeration equipment. The main purpose is to increase the thermal capacity of the equipment and maintain product temperature within safe limits during frequent door openings, on–off cycling of the compressor and mains power failure. This paper considers candidate phase change materials for application in ...
DOI:
10.1016/j.apenergy.2013.01.071

11. Comparative analysis of energy produced by photovoltaic modules with anti-soiling coated surface in arid climates

Author:
M. Piliougine; C. Cañete; R. Moreno; J. Carretero; J. Hirose; S. Ogawa; M. Sidrach-de-Cardona
Source:
Applied energy 2013 v.112 no. pp. 626-634
ISSN:
0306-2619
Subject:
climate; coatings; energy; power plants; rain; solar collectors; transmittance; Spain
Abstract:
... Dust accumulation on the surface of photovoltaic modules decreases the transmittance and produces power losses and consequently daily energy losses. These losses are important in large photovoltaic power plants, mainly in arid areas. The company Asahi Kasei Corporation has developed a new self-cleaning coating for photovoltaic applications. The performance of photovoltaic modules can be increased ...
DOI:
10.1016/j.apenergy.2013.01.048

12. Configuring wall layers for improved insulation performance

Author:
Danielle E.M. Bond; William W. Clark; Mark Kimber
Source:
Applied energy 2013 v.112 no. pp. 235-245
ISSN:
0306-2619
Subject:
capacitance; heat; heat tolerance; insulating materials; temperature
Abstract:
... External walls provide an important barrier between occupied building spaces and variable ambient conditions. Building insulation is often optimized for static performance based on its R-Value rating, but a growing body of literature has begun to assess the dynamic thermal performance of multi-layer walls. The focus of this work is to provide fundamental insight into configuring wall layers for im ...
DOI:
10.1016/j.apenergy.2013.06.024

13. Determinants and implications of employee electricity saving habit: An empirical study in China

Author:
Yixiang Zhang; Zhaohua Wang; Guanghui Zhou
Source:
Applied energy 2013 v.112 no. pp. 1529-1535
ISSN:
0306-2619
Subject:
business enterprises; electricity; energy; energy conservation; human resources; least squares; models; surveys; China
Abstract:
... Employees constitute a large target group for energy conservation. Companies that want to reduce their energy consumption should promote their employees’ participation. For successful energy saving in companies, employees should save energy on a continued basis, and develop the habit of energy saving. Unfortunately, success in having employees continue to save energy in organization is difficult. ...
DOI:
10.1016/j.apenergy.2013.04.006

14. Different mixing modes for biogas plants using energy crops

Author:
Alexandra Kowalczyk; Eva Harnisch; Sebastian Schwede; Mandy Gerber; Roland Span
Source:
Applied energy 2013 v.112 no. pp. 465-472
ISSN:
0306-2619
Subject:
anaerobic digestion; biogas; cattle manure; corn cobs; corn silage; energy; energy crops; foaming; industrial applications; methane; microorganisms; mixing; organic matter; uncertainty
Abstract:
... Biogas is produced by anaerobic digestion of organic matter in digesters, which must be stirred. Stirring is responsible for up to 54% of the power consumption of current biogas plants [Dachs; Rehm 2006]. One possibility to operate biogas plants more efficiently is to reduce the energy consumption by avoiding constant stirring. In this study different mixing modes were investigated in three equal ...
DOI:
10.1016/j.apenergy.2013.03.065

15. Dynamic behavior of Rankine cycle system for waste heat recovery of heavy duty diesel engines under driving cycle

Author:
Hui Xie; Can Yang
Source:
Applied energy 2013 v.112 no. pp. 130-141
ISSN:
0306-2619
Subject:
diesel engines; droplets; energy; evaporation; heat; margin of safety; models; temperature; vapors
Abstract:
... The RCS (Rankine cycle system) used to recover the WHE (waste heat energy) from engines has been regarded as one of the most potential ways of achieving higher efficiency. However, it is of great challenge to keep the RCS still in good performance under driving cycle. This paper tries to reveal and explain its on-road inefficiency. The operating process of the RCS under driving cycle was analyzed ...
DOI:
10.1016/j.apenergy.2013.05.071

16. Dynamic modelling of a PV pumping system with special consideration on water demand

Author:
Pietro Elia Campana; Hailong Li; Jinyue Yan
Source:
Applied energy 2013 v.112 no. pp. 635-645
ISSN:
0306-2619
Subject:
case studies; cost effectiveness; dynamic models; irrigation systems; land use; pumps; solar collectors; solar energy; solar radiation; water supply
Abstract:
... The exploitation of solar energy in remote areas through photovoltaic (PV) systems is an attractive solution for water pumping for irrigation systems. The design of a photovoltaic water pumping system (PVWPS) strictly depends on the estimation of the crop water requirements and land use since the water demand varies during the watering season and the solar irradiation changes time by time. It is o ...
DOI:
10.1016/j.apenergy.2012.12.073

17. Electricity production from a bio-electrochemical cell for silver recovery in alkaline media

Author:
Yun-Hai Wang; Bai-Shi Wang; Bin Pan; Qing-Yun Chen; Wei Yan
Source:
Applied energy 2013 v.112 no. pp. 1337-1341
ISSN:
0306-2619
Subject:
acetates; ammonia; chemical oxygen demand; electricity; electrodes; ions; silver; wastewater
Abstract:
... The recovery of silver from ammonia chelated silver alkaline waste water, COD removal from acetate waste water and electricity production in a dual chamber bio-electrochemical cell was investigated. The results indicated that pure silver could be deposited on cathode with over 99.9% silver ions removed from the catholyte while over 83% COD could be removed from anolyte simultaneously. As a result, ...
DOI:
10.1016/j.apenergy.2013.01.012

18. Experimental and numerical study of annular PCM storage in the presence of natural convection

Author:
Martin Longeon; Adèle Soupart; Jean-François Fourmigué; Arnaud Bruch; Philippe Marty
Source:
Applied energy 2013 v.112 no. pp. 175-184
ISSN:
0306-2619
Subject:
energy; heat exchangers; heat transfer; melting; solar energy; solidification; temperature
Abstract:
... Latent thermal energy storage (TES) systems have shown growing potential in matching the production to the demand in Concentrated Solar Power (CSP) systems. Indeed, the improved storage density and the constant temperature release of energy allow for more compact heat exchanger design and simplify system management. The shell and tubes heat exchanger is the most promising technology, owing to its ...
DOI:
10.1016/j.apenergy.2013.06.007

19. Experimental verification of a rolling-piston expander that applied for low-temperature Organic Rankine Cycle

Author:
N. Zheng; L. Zhao; X.D. Wang; Y.T. Tan
Source:
Applied energy 2013 v.112 no. pp. 1265-1274
ISSN:
0306-2619
Subject:
heat; power generation; temperature; working conditions
Abstract:
... A kilowatt-sized rolling-piston expander is proposed for low-temperature Organic Rankine Cycle power generation system. The main purpose of this paper is to conduct a dynamic test of the proposed expander. A low-temperature ORC system using R245fa as working fluid is established for the performance evaluation of the proposed expander. In the experimental system, a hot-water boiler is applied to su ...
DOI:
10.1016/j.apenergy.2012.12.030

20. Framework methodology for increased energy efficiency and renewable feedstock integration in industrial clusters

Author:
Roman Hackl; Simon Harvey
Source:
Applied energy 2013 v.112 no. pp. 1500-1509
ISSN:
0306-2619
Subject:
biorefining; business enterprises; chemical industry; electricity; emissions; energy efficiency; exergy; feedstocks; fossil fuels; heat; Sweden
Abstract:
... Energy intensive industries, such as the bulk chemical industry, are facing major challenges and adopting strategies to face these challenges. This paper investigates options for clusters of chemical process plants to decrease their energy and emission footprints. There is a wide range of technologies and process integration opportunities available for achieving these objectives, including (i) dec ...
DOI:
10.1016/j.apenergy.2013.03.083