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Optimization model analysis of centralized groundwater source heat pump system in heating season

Shilei LU,Yunfang QI,Zhe CAI,Yiran LI

Frontiers in Energy 2015, Volume 9, Issue 3,   Pages 343-361 doi: 10.1007/s11708-015-0372-8

Abstract: The ground-water heat-pump system (GWHP) provides a high efficient way for heating and cooling whileNext, heating parameters were calculated based on the building heat load and the terminal equipment characteristic

Keywords： optimization model     groundwater source heat pump system     theoretical analysis     example verification     heatingseason    

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Treatment, residual chlorine and season as factors affecting variability of trihalomethanes in small

Roberta DYCK,Geneviève COOL,Manuel RODRIGUEZ,Rehan SADIQ

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 1,   Pages 171-179 doi: 10.1007/s11783-014-0750-1

Abstract: Seasonal variability in source water can lead to challenges for drinking water providers related to operational optimization and process control in treatment facilities. The objective of this study is to investigate seasonal variability of water quality in municipal small water systems (<3000 residents) supplied by surface waters. Residual chlorine and trihalomethanes (THM) were measured over seven years (2003–2009). Comparisons are made within each system over time, as well as between systems according to the type of their treatment technologies. THM concentrations are generally higher in the summer and autumn. The seasonal variability was generally more pronounced in systems using chlorination plus additional treatment. Chloroform, total THM (TTHM) and residual chlorine concentrations were generally lower in systems using chlorination plus additional treatment. Conversely, brominated THM concentrations were higher in systems using additional treatment. Residual chlorine was highest in the winter and lowest in the spring and summer. Seasonal variations were most pronounced for residual chlorine in systems with additional treatment. There was generally poor correlation between THM concentrations and concentrations of residual chlorine. Further study with these data will be beneficial in finding determinants and indicators for both quantity and variability of disinfection byproducts and other water quality parameters.

Keywords： drinking water     residual chlorine     seasonal variability     small municipal systems     treatment technologies     trihalomethanes    

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A state-of-the-art review of solar passive building system for heating or cooling purpose

Arun Kumar NANDA,C K PANIGRAHI

Frontiers in Energy 2016, Volume 10, Issue 3,   Pages 347-354 doi: 10.1007/s11708-016-0403-0

Abstract: The major portion of energy in a building is consumed by heating, ventilating, and air-conditioning (The traditional heating and cooling systems contribute greatly to the emission of greenhouse gases, especiallyTrombe wall, solar chimney, unglazed transpired solar façade, and solar roof, are adopted for solar heatingTherefore, an attempt has been made in this paper to compile the developments of solar heating and cooling

Keywords： HVAC     heating     cooling     solar heating     carbon dioxide (CO2) emissions    

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A district heating system based on absorption heat exchange with CHP systems

Lin FU, Yan LI, Yi JIANG, Shigang ZHANG,

Frontiers in Energy 2010, Volume 4, Issue 1,   Pages 77-83 doi: 10.1007/s11708-010-0022-0

Abstract: In order to decrease the energy consumption of large-scale district heating systems with cogeneration, a district heating system is presented in this paper based on absorption heat exchange in the cogenerationIn substations of the heating system, the temperature of return water of primary heat network is reducedCompared with traditional heating systems, this system runs with a greater circuit temperature drop soMoreover, by recovering the exhausted heat from the condensers, the capacity of the district heating

Keywords： cogeneration     district heating     absorption heat exchange     Co-ah cycle    

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Extracts from cotton over the whole growing season induce

Ming LANG, Rui YU, Yongqing MA, Wei ZHANG, Christopher S. P. McErlean

Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 2,   Pages 228-236 doi: 10.15302/J-FASE-2017150

Abstract: Extracts of cotton across the whole growing season were able to induce germination but displayed significant

Keywords： agricultural systems     cotton     crop ecology     crop rotation systems     weed management    

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Numerical simulation of billet heating

Chen Guanjun

Strategic Study of CAE 2010, Volume 12, Issue 2,   Pages 57-61

Abstract:

According to the case of billet heating in a regenerative type heatingThe relation of different thick billet and the heating time is simulated and studied, the result of simulationand the heating time in the actual heating furnace is compared, and the expressions of thickness andheating time is educed by numerical suit, and put into production.The above result of study can offer foundation for the establishment and optimizing of billet heating

Keywords： heating furnace     billet     heating     simulation    

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Impact of climate change on building heating energy consumption in Tianjin

Cao XIANG, Zhe TIAN

Frontiers in Energy 2013, Volume 7, Issue 4,   Pages 518-524 doi: 10.1007/s11708-013-0261-y

Abstract: This paper investigated the variation of building heating energy consumption caused by global warmingThe results showed that the 10-year-average heating energy consumption of 2001–2010 had reduced by 16.1%By conducting principal component analysis and regression analysis, future variation of building heatingFor B1/A1B emissions scenarios, the multi-year-average heating load was found to decrease by 9.7% (18.1%

Keywords： global warming     office building     heating energy consumption    

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Energy efficiency and carbon dioxide emissions reduction opportunities in district heating source in

Gaofeng CHEN, Xuejing ZHENG, Lin CONG

Frontiers in Energy 2012, Volume 6, Issue 3,   Pages 285-295 doi: 10.1007/s11708-012-0197-7

Abstract: Tianjin Municipal Government is planning to establish an energy efficiency trading platform for district heatingThis paper presented an in-depth analysis of the district heating industry in Tianjin municipality, andSince energy efficiency was closely related to different heating source technologies, baselines werethe dataset and referring to the related standards, method of determining the baseline for district heating

Keywords： district heating     energy efficiency     baseline     carbon abatement    

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Higher heating value prediction of torrefaction char produced from non-woody biomass

Nitipong SOPONPONGPIPAT,Dussadeeporn SITTIKUL,Unchana SAE-UENG

Frontiers in Energy 2015, Volume 9, Issue 4,   Pages 461-471 doi: 10.1007/s11708-015-0377-3

Abstract: The higher heating value of five types of non-woody biomass and their torrefaction char was predictedanalysis data, the mass fraction of fixed carbon and volatile matter had a strong effect on the higher heatinganalysis data, the mass fraction of carbon, hydrogen, and oxygen had a strong effect on the higher heatingvalue, while no relationship between the higher heating value and mass fractions of nitrogen and sulfur

Keywords： higher heating value     correlation     biomass     proximate analysis     ultimate analysis    

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Operating characteristic analysis on the ultra-thin low temperature floor-heating system

Hualing ZHANG, Xiaopeng SONG

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 2,   Pages 127-132 doi: 10.1007/s11709-013-0200-3

Abstract: Prefabricated ultra-thin radiant heating panel, as a new heating terminal type, is becoming a highlightTo obtain these data, a heating system was set up in a duplex house in Chongqing.The test results show that the floor heating system could almost satisfy thermal comfort requirementwater temperature should be properly raised during the preheating period and lowered down in the steady heating

Keywords： ultra-thin floor heating panel     the preheating time     thermal comfort     energy saving    

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Fault simulation of boiler heating surface ash deposition in a power plant system

Weiwei ZHANG, Huisheng ZHANG, Ming SU

Frontiers in Energy 2011, Volume 5, Issue 4,   Pages 435-443 doi: 10.1007/s11708-011-0162-x

Abstract: performances of the power plant under the conditions of the furnace slagging and ash deposition of the heating

Keywords： boiler     slagging     ash deposition     fault simulation    

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Constant temperature control of tundish induction heating power supply for metallurgical manufacturing

Yufei YUE, Qianming XU, Peng GUO, An LUO

Frontiers in Energy 2019, Volume 13, Issue 1,   Pages 16-26 doi: 10.1007/s11708-018-0572-0

Abstract: The tundish induction heating power supply (TIHPS) is one of the most important equipment in the continuous

Keywords： tundish induction heating power supply (TIHPS)     constant temperature control     input harmonic current blocking    

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Cleaning the energy sources for water heating among Nanjing households: barriers and opportunities for

Lingyun ZHU,Beibei LIU,Jun BI

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 5,   Pages 757-766 doi: 10.1007/s11783-013-0603-3

Abstract: Energy for water heating accounts for an increasing part in residential energy demand in China.Based on these, barriers and opportunities are discussed for transitions toward cleaner water heating

Keywords： residential energy demand     water heating     multinomial logit model    

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Combination of steam-enhanced extraction and electrical resistance heating for efficient remediation

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 11, doi: 10.1007/s11783-022-1582-z

Abstract:

● Coupling merits of SEE and ERH were explored by a laboratory-scale device.

Keywords： Steam-enhanced extraction     Electrical resistance heating     Dense nonaqueous phase liquid     Soil remediation    

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Effect of Joule heating on electro-osmotic flow in a closed-end micro-channel with isothermal and convective

Liang ZHAO, Linhua LIU,

Frontiers in Energy 2009, Volume 3, Issue 4,   Pages 381-388 doi: 10.1007/s11708-009-0057-2

Abstract: The effect of Joule heating on the steady state electro-osmotic flow in a closed-end micro-channel isThe simulations show that the presence of Joule heating causes an increase in temperature and a decreaseThe effect of Joule heating on the induced pressure gradient is also studied, which is very importantsmaller than that without considering Joule heating when the wall temperature of the micro-channel isheating is small under the convective boundary condition.

Keywords： closed-end micro-channel     electrical double layer     electro-osmotic flow     induced pressure gradient     Joule heating    

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Title Author Date Type Operation

Optimization model analysis of centralized groundwater source heat pump system in heating season

Shilei LU,Yunfang QI,Zhe CAI,Yiran LI

Journal Article

Treatment, residual chlorine and season as factors affecting variability of trihalomethanes in small

Roberta DYCK,Geneviève COOL,Manuel RODRIGUEZ,Rehan SADIQ

Journal Article

A state-of-the-art review of solar passive building system for heating or cooling purpose

Arun Kumar NANDA,C K PANIGRAHI

Journal Article

A district heating system based on absorption heat exchange with CHP systems

Lin FU, Yan LI, Yi JIANG, Shigang ZHANG,

Journal Article

Extracts from cotton over the whole growing season induce

Ming LANG, Rui YU, Yongqing MA, Wei ZHANG, Christopher S. P. McErlean

Journal Article

Numerical simulation of billet heating

Chen Guanjun

Journal Article

Impact of climate change on building heating energy consumption in Tianjin

Cao XIANG, Zhe TIAN

Journal Article

Energy efficiency and carbon dioxide emissions reduction opportunities in district heating source in

Gaofeng CHEN, Xuejing ZHENG, Lin CONG

Journal Article

Higher heating value prediction of torrefaction char produced from non-woody biomass

Nitipong SOPONPONGPIPAT,Dussadeeporn SITTIKUL,Unchana SAE-UENG

Journal Article

Operating characteristic analysis on the ultra-thin low temperature floor-heating system

Hualing ZHANG, Xiaopeng SONG

Journal Article

Fault simulation of boiler heating surface ash deposition in a power plant system

Weiwei ZHANG, Huisheng ZHANG, Ming SU

Journal Article

Constant temperature control of tundish induction heating power supply for metallurgical manufacturing

Yufei YUE, Qianming XU, Peng GUO, An LUO

Journal Article

Cleaning the energy sources for water heating among Nanjing households: barriers and opportunities for

Lingyun ZHU,Beibei LIU,Jun BI

Journal Article

Combination of steam-enhanced extraction and electrical resistance heating for efficient remediation

Journal Article

Effect of Joule heating on electro-osmotic flow in a closed-end micro-channel with isothermal and convective

Liang ZHAO, Linhua LIU,

Journal Article