نتایج جستجو برای: سیستم chp

تعداد نتایج: 75803  

2016
A. Rong P. B. Luh R. Lahdelma

Abstract—High penetration of intermittent renewable energy sources (RES) such as solar power and wind power into the energy system has caused temporal and spatial imbalance between electric power supply and demand for some countries and regions. This brings about the critical need for coordinating power production and power exchange for different regions. As compared with the poweronly systems,...

2017
Daniel Ryan

Combined heat and power (CHP) plants have received a resurgence of attention from power system planners and policy makers in an effort to fully realize the potential of the technology. CHP plants that are thermal-primary, however, do not always maximize the benefits provided to the power system. In this study, we examine how power system planning metrics can be applied to CHP plants to better u...

2016
Cristiane GONÇALVES Geisla Mary S. SOARES Marcelo FAVERI Paula Juliana PÉREZ-CHAPARRO Eduardo LOBÃO Luciene Cristina FIGUEIREDO Gustavo Titonele BACCELLI Magda FERES

Objective The aim of this study was to evaluate the association of Porphyromonas endodontalis, Filifactor alocis and Dialister pneumosintes with the occurrence of periodontitis. Material and Methods Thirty subjects with chronic periodontitis (ChP) and 10 with periodontal health (PH) were included in the study. Nine subgingival biofilm samples were collected as follows: i) PH group - from the me...

Journal: :Tree physiology 2010
Álvaro López-Bernal Esteban Alcántara Luca Testi Francisco J Villalobos

The compensation heat pulse (CHP) method is widely used to estimate sap flow and transpiration in conducting organs of woody plants. Previous studies have reported a natural azimuthal variability in sap flow, which could have practical implications in locating the CHP probes and integrating their output. Sap flow of several olive trees (Olea europaea L. cv. 'Arbequina') previously grown under d...

2017
Da Liu Jin-Chen Liu Han Huang Xing-Ping Zhang Yi Feng Wei-Jun Wang Tomonobu Senjyu

The increasing development of combined heat and power (CHP) plants is exacerbating the wind power curtailment problem in regional power grids during the winter heating season. Electric boilers (EBs) were proposed to be employed within CHP plants to relieve this problem. However, CHP plants usually have no incentive for investing in EBs. Therefore, CHP plants must be incentivized to make such in...

Journal: :Indian journal of physiology and pharmacology 1997
P Raghuraj S Telles

The present study was conducted to compare critical flicker fusion frequency (CFF), degree of optical illusion ("di"), dexterity scores, and grip strength in three groups of subjects, viz community home girls who had learned yoga for 6 months (CHY), age-matched community home girls who had physical activity training for 6 months (CHP), and girls who were attending a regular school (SCH). There ...

2012
Changkook Ryu Donghoon Shin

Municipal solid waste (MSW) is an important energy resource for combined heat and power (CHP) production. This study summarized an overview of CHP by MSW to energy (WtE) plants in South Korea and discussed the issues related to energy efficiency improvement. Given the dominant housing culture of apartment living in South Korea, the primary energy output of WtE plants has been for district heati...

Journal: :European Journal of Operational Research 2003
Risto Lahdelma Henri Hakonen

Combined heat and power (CHP) production is an increasingly important energy production technology. CHP production is usually applied in back pressure plants, where the heat and power generation follows a joint characteristic. A CHP system may also comprise separate heat and power production facilities. Cost-efficient operation of a CHP system can be planned using an optimisation model based on...

2012
Jung-Nien Lai Chien-Tung Wu Jung-Der Wang

Background. Chinese herbal products (CHPs) given as a therapy for symptom relief have gained widespread popularity among women with breast cancer. The aim of this study was to analyze the utilization of CHP among women with breast cancer in Taiwan. Methods. The usage, frequency of services, and CHP prescribed for breast cancer among women with breast cancer were evaluated, recruited from a rand...

2013
Selvarani Radhakrishnan Joel O. Paz Fei Yu Sandra Eksioglu Donald L. Grebner

Combined Heat and Power (CHP) production using renewable energy sources is gaining importance because of its flexibility and high-energy efficiency. Biomass materials, such as corn stover and forestry residues, are potential sources for renewable energy for CHP production. In Mississippi, approximately 4.0 MT dry tons of woody biomass is available annually for energy production. In this study, ...

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