Impacts of biogas plant performance factors on total substrate costs

2011 ◽  
Vol 35 (4) ◽  
pp. 1552-1560 ◽  
Author(s):  
B. Stürmer ◽  
E. Schmid ◽  
M.W. Eder
Keyword(s):  
Biogas Plant ◽  
Plant Performance ◽  
Performance Factors

Mathematical modeling of heat transfer inside a biogas plant

2020 ◽  
Vol 6 ◽  
pp. 40-43
Author(s):  
Amur Fiapshev ◽  
Marat Khamokov ◽  
Olesya Kilchukova ◽  
Batyr Fiapshev
Keyword(s):  
Mathematical Modeling ◽  
Heat Transfer ◽  
Heat Exchanger ◽  
Biogas Plant ◽  
Plant Performance ◽  
Temperature Level ◽  
Research Results ◽  
Transfer Processes

The main purpose of this project was to simulate heat transfer processes inside a biogas plant. The unique design of the suggested biogas plant incorporates a heat exchanger mixer as one combined part. This allowed more even biomass warming and keeping the required temperature level all over the tank to optimize the overall biogas processing in the plant. The research results show how major biogas plant parameters affect the plant performance.

Feasibility study of a centralized biogas plant performance in a dairy farming area

2017 ◽  
Vol 20 (1) ◽  
pp. 314-322 ◽  
Author(s):  
Yoshiteru Takeuchi ◽  
Fetra J. Andriamanohiarisoamanana ◽  
Seiichi Yasui ◽  
Masahiro Iwasaki ◽  
Takehiro Nishida ◽  
...  
Keyword(s):  
Feasibility Study ◽  
Dairy Farming ◽  
Biogas Plant ◽  
Plant Performance ◽  
Farming Area ◽  
Centralized Biogas Plant

scholarly journals Design and Implementation of Automatic Gas Valve Control Mechanism for Biogas Plant

2020 ◽  
Vol 6 (5) ◽  
pp. 72-77
Author(s):  
Nivedita Padole ◽  
Akshay Kadu ◽  
Sarika Patil
Keyword(s):  
Control Mechanism ◽  
Solenoid Valve ◽  
Biogas Plant ◽  
Plant Performance ◽  
Gas Leakage ◽  
Automation And Control ◽  
Biogas Plants ◽  
Reliable Solution ◽  
Opening And Closing ◽  
Valve Control

Biogas plants are slowly becoming popular as these are non- polluting, renewable energy source, reduces landfill and inexpensive. However, users from rural populations are still facing problems due to the absence of automation in biogas plants. Hence, the demand for automation and control is increasing so as to enhance the plant performance. This paper proposes a hardware implementation of automatic gas valve control mechanism for biogas plant. The automatic gas valve control system consists of LC5926H ON - OFF controller by which an automatic opening and closing of the gas valve has been carried out via solenoid valve. Based on the pressure inside the dome, the controller allows solenoid valve to perform the switching operation if the pressure inside the dome exceeds or fall below the preset value. This advanced mechanism provides more efficient and reliable solution to the existing biowaste systems by reducing human intervention and by avoiding the gas leakage.

Exergoeconomic Assessment of the Performance Degradation in a Power Plant at Full and Partial Load

2003 ◽  
Author(s):  
Frank Cziesla ◽  
George Tsatsaronis
Keyword(s):  
Power Plant ◽  
Plant Performance ◽  
Plant Component ◽  
Performance Factors ◽  
Partial Load ◽  
Commercial Process ◽  
Total Plant ◽  
Fouling Factor ◽  
Process Simulator ◽  
Plant Components

Power plant performance deteriorates during operation due to degradation of plant components. This paper deals with the calculation of costs associated with the degradation of selected plant components in a 400 MW pulverized coal-fired subcritical power plant at full and partial load. A commercial process simulator (Gate/Cycle) is used to study the thermodynamic behavior of the plant at various loads. In several case studies, the performance of one or more plant components is deteriorated by altering performance factors (i.e., fouling factor for heat exchangers and isentropic efficiency for turbomachinery). An exergy analysis and a detailed exergoeconomic evaluation are conducted for each case study. Selected exergoeconomic variables defined for each plant component assist in identifying the location of degradation and its effect on the performance and the product coast for single components and the total plant. Such an approach can be applied to process monitoring of a real plant and provides useful information for the diagnosis and assessment of deteriorated power plant performance.

scholarly journals Effect of Canola Oil to Reduce the Scum Formations

2019 ◽  
Vol 9 (1) ◽  
pp. 7136-7139
Keyword(s):  
Canola Oil ◽  
Coconut Oil ◽  
Degradation Process ◽  
Biogas Plant ◽  
Plant Performance ◽  
Scale Model ◽  
Metastable Liquid ◽  
Chemical Additive ◽  
It Impacts

The scum is a colligation of slow degrading substrate formed on topmost portion of digester with its gas, metastable liquid and foam contents it impacts seriously on biogas plant economically, environmentally and biologically. Scum formations hamper the yield of biogas generation, methane contents, slows the degradation process and stops the burnable biogas formation. The operational plant performance drops rapidly. The experimentations were conducted with canola oil, natural Coconut oil and ENO to evaluate the defoaming potentials on lab scale model. The research concluded that the canola oil is best chemical additive which reported better defoaming potential of 32% at peak, higher yield of biogas, improves methane contents and stabilizes the pH for better biomethanation.

Linguistic Competence in Aphasia

2008 ◽  
Vol 17 (3) ◽  
pp. 87-92
Author(s):  
Leonard L. LaPointe
Keyword(s):  
Language Use ◽  
Linguistic Competence ◽  
Careful Study ◽  
Feral Children ◽  
Performance Factors ◽  
Performance Loss ◽  
Linguistic Rules ◽  
Communication Goals ◽  
Aphasia Treatment ◽  
And Performance

Abstract Loss of implicit linguistic competence assumes a loss of linguistic rules, necessary linguistic computations, or representations. In aphasia, the inherent neurological damage is frequently assumed by some to be a loss of implicit linguistic competence that has damaged or wiped out neural centers or pathways that are necessary for maintenance of the language rules and representations needed to communicate. Not everyone agrees with this view of language use in aphasia. The measurement of implicit language competence, although apparently necessary and satisfying for theoretic linguistics, is complexly interwoven with performance factors. Transience, stimulability, and variability in aphasia language use provide evidence for an access deficit model that supports performance loss. Advances in understanding linguistic competence and performance may be informed by careful study of bilingual language acquisition and loss, the language of savants, the language of feral children, and advances in neuroimaging. Social models of aphasia treatment, coupled with an access deficit view of aphasia, can salve our restless minds and allow pursuit of maximum interactive communication goals even without a comfortable explanation of implicit linguistic competence in aphasia.

Gender Differences in the Mental Rotations Test (MRT) Are Not Due to Task Complexity

2008 ◽  
Vol 29 (3) ◽  
pp. 130-133 ◽  
Author(s):  
Corinna Titze ◽  
Martin Heil ◽  
Petra Jansen
Keyword(s):  
Gender Differences ◽  
Mental Rotation ◽  
Task Complexity ◽  
Time Constraints ◽  
Medium Effects ◽  
Performance Factors ◽  
Mental Rotations ◽  
Sufficient Power ◽  
Forced Choice Tasks ◽  
Choice Tasks

Gender differences are one of the main topics in mental rotation research. This paper focuses on the influence of the performance factor task complexity by using two versions of the Mental Rotations Test (MRT). Some 300 participants completed the test without time constraints, either in the regular version or with a complexity reducing template creating successive two-alternative forced-choice tasks. Results showed that the complexity manipulation did not affect the gender differences at all. These results were supported by a sufficient power to detect medium effects. Although performance factors seem to play a role in solving mental rotation problems, we conclude that the variation of task complexity as realized in the present study did not.

Command and Control

2018 ◽  
Vol 8 (1) ◽  
pp. 1-10
Author(s):  
Stuart D. H. Beveridge ◽  
Simon T. Henderson ◽  
Wayne L. Martin ◽  
Joleah B. Lamb
Keyword(s):  
Air Transport ◽  
Flight Safety ◽  
Flight Crew ◽  
Systematic Review Methodology ◽  
Role Assignment ◽  
Performance Factors ◽  
Policy Review ◽  
Reported Effect ◽  
And Control ◽  
Research And Policy

Abstract. Compared with other team settings, flight crew in air transport present a unique situation where the leader or supervisor regularly engages in active control. When the captain is assigned cognitively demanding pilot flying duties, the subordinate and often less experienced first officer must perform equally crucial monitoring and support duties. Using a systematic review methodology, this study reviews the reported effect of crew role assignment on flight safety outcomes. Our review identified 18 relevant studies and suggests crew performance factors linked to flight safety are affected by crew role assignment. Findings suggest a greater number of inherent obstacles may exist for optimal crew performance with the captain as pilot flying, raising the need for further specific research and policy review in this area.

Effect of planting time on the performance of broccoli under Mizoram conditions

2017 ◽  
Vol 17 (1) ◽  
pp. 15-18
Author(s):  
Donnie Lalfakzuala Kawlni ◽  
Chhungpuii Khawlhring
Keyword(s):  
Commercial Production ◽  
Plant Performance ◽  
Average Weight ◽  
Plant Spacing ◽  
Vegetable Crop ◽  
Marketable Yield ◽  
Sowing Time ◽  
Planting Time ◽  
Significant Difference ◽  
Cultural Requirements

Broccoli (Brassica oleracea var. italica), a popular vegetable crop, has one of the most exacting climatic and cultural requirements, which limit its commercial production to a few favored locations. A field experiment was conducted at Mizoram University, Tanhril, Mizoram during winter of 2013/2014 to find out the effect of time of sowing on plant performance and yield of broccoli. Six sowing time was done viz. 17 October (T1), 24 October (T2), 31 October (T3), 7 November (T4), 14 November (T5) and 21 November (T6) with plant spacing of 45cm x 45cm. Yield and yield contributing characters were significantly influenced by the planting time. Highest average weight of marketable curd per plant (199.20 g) was obtained from T2, whereas lowest average weight obtained from T6 (75 g). The influence of planting time also showed significant difference on the calculated yield (tonnes per hectare) of broccoli, in which T2 showed highest marketable yield of 9.83 t/ha.

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