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Energetic, economic, and environmental analysis of solid oxide fuel cell-based combined cooling, heating, and power system for cancer care hospital

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Building Simulation 2022年第8期15卷 1437-1454页

作者： Ahmad K.Sleiti Wahib AAl-Ammari Raiha Arshad tarek ei mekkawy Department of Mechanical&Industrial Engineering College of EngineeringQatar UniversityDohaQatar

In this study,energetic,economic,and environmental analysis of solid oxide fuel cell-based combined cooling,heating,and power(SOFC-CCHP)system is proposed for a cancer care hospital *** energy required for the hospital power,cooling,and heating demands was obtained based on real and detailed field data,which could serve as a reference for future works in the *** data with a 3D model for the hospital building are constructed and created in eQUEST software to precisely calculate the energy demands of the existing system(baseline case).Then,energetic,economic,and environmental models were developed to compare and assess the performance of the proposed SOFC-CCHP *** results show that the proposed system can cover about 49% to 77% of the power demand of the hospital with an overall efficiency of 78.3%.Also,the results show that the levelized cost of electricity of the system and its payback period at the designed capacity of the SOFC is 0.087S/kWh and 10 years,***,compared to the baseline system of the hospital,the SOFC-CCHP reduces the CO_(2) emission by 89% over the *** sensitivity analysis showed that a maximum SOFC efficiency of 52%and overall efficiency of 80%are achieved at cell operating temperature of 1027℃ and fuel utilization factor of 0.85.

关键词： combined cooling,heating,and power solid oxide fuel cell hospital power demand CO_(2)emissions levelized cost of electricity(LCOE)

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文化的交流与融合——加拿大驻韩国大使馆

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景观设计 2008年第4期 46-51页

作者： tarek ei-khatib Kim Yong Kwan（图片提供）

该项目体现了加拿大与韩国两国之司在文化上的碰撞．也突出了二者的共性，尤其表现在尊重自然这一点上。该项目位于首尔市中区贞洞的德寿宫附近，场地中保留了一棵具有520年历史的古树，体现出人们对大自然的尊重。

关键词：韩国交流大自然加拿大驻韩国大使馆

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Effect of Using Baker＇s Yeast and Exogenous Digestive Enzymes as Growth Promoters on Growth, Feed Utilization and Hematological Indices of Nile tilapia, Oreochromis niloticus Fingerlings

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Journal of Agricultural Science and Technology(B) 2012年第1期2卷 15-28页

作者： Ashraf Mohamed Abdelsamee Goda Hafez Abdel-Hamid Hassan Mabrouk Mohamed Abd ei-Hamid Wafa tarek Mohamed E1-Afifi National Institute of Oceanography and Fisheries （NIOF） Fish Nutrition Laboratory Cairo 24135 Egypt Regional Center for Foods and feeds Agriculture Research Center Ministry of Agriculture Cairo 24135 Egypt

The present study was conducted to evaluate the effect of baker yeast, Saccharomyces cerevisiae （SC） and exogenous digestive enzymes （pepsin, papain and a-amylase, EDE） dietary supplementation on growth performance, feed utilization and hematological indices of Nile tilapia, Oreochromis niloticus fingerlings. A total of 630 Nile tilapia fingerlings with an average body weight of 26.4 ± 0.2 g were divided in the seven experimental net-pen treatments （three replicates each）. The experiment was conducted for 119 days. Seven isonitrogenous （26.50%） digestible protein and isocaloric （13.40 MJ kgl） digestible energy experimental diets were formulated. The control diet had no SC and EDE added. Diets 2-3 each contained SC at levels of 2 and 4 g 100 g diet-t, respectively, while diets 4-5 each contained EDE at levels of （0.64, 1.28, 0.16） and （1.28, 2.56, 0.32） g 100 gdiefI of pepsin, papain and a-amylase, respectively. Diet 6 contained mixture of SC and EDE at levels of 1 g yeast and 0.32, 0.64, 0.08 g of pepsin, papain and a-amylase, respectively 100 gdiet1 and diet D7 contained 2 g yeast and 0.64, 1.28, 0.16 g of pepsin, papain and a-amylase, respectively 100 g dietl. Growth performance and feed utilization efficiency of Nile tilapia were significantly （P 〈 0.05） higher in all treatments receiving SC and/or EDE supplemented-diets than the control diet which suggests that the addition of SC and EDE enhanced the growth performance. Red blood cells counts, hematocrit and hemoglobin were significantly （P 〈 0.05） highest in all treatments receiving mixture of SC and EDE supplemented-diets （D6 ＋ D7）. The same trend was observed for total plasma protein and total plasma globulin levels. The results of present study suggested that Nile tilapia fingerlings fed diets containing the mixture of I g yeast, SC and 0.32, 0.64, 0.08 g of pepsin, papain and a-amylase, respectively 100 gdiet^-1, for 119 days had enhanced growth performance, diet utilization efficiency and hematological ind

关键词： Baker yeast digestive enzymes growth feed utilization hematological indices Nile tilapia.

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