Energy, environmental and economic performance evaluation of energy pile system under different climate conditions

2021 ◽  
pp. 115041
Author(s):  
Chanjuan Han ◽  
Chentao Zhu ◽  
Yang Shen ◽  
Xiong Bill Yu
Keyword(s):  
Performance Evaluation ◽  
Economic Performance ◽  
Climate Conditions ◽  
Energy Pile

Economic performance evaluation of Brangus and Nellore cattle breed naturally infested with Rhipicephalus microplus in an extensive production system in Central-West Brazil

2019 ◽  
Vol 78 (4) ◽  
pp. 565-577 ◽  
Author(s):  
Paulino Bonatte Junior ◽  
Vinicius da Silva Rodrigues ◽  
Marcos Valério Garcia ◽  
Leandro de Oliveira Souza Higa ◽  
Namor Pinheiro Zimmermann ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Economic Performance ◽  
Production System ◽  
Cattle Breed ◽  
Rhipicephalus Microplus ◽  
Nellore Cattle

scholarly journals Performance evaluation of power-operated reapers for harvesting rice at farmers’ field

2018 ◽  
Vol 16 (1) ◽  
pp. 144-150
Author(s):  
Md Ashraful Alam ◽  
Anwar Hossen ◽  
AKM Saiful Islam ◽  
Monjurul Alam
Keyword(s):  
Performance Evaluation ◽  
Economic Performance ◽  
Production Cost ◽  
Field Capacity ◽  
Production Costs ◽  
High Wage ◽  
Harvesting Time ◽  
Actual Field ◽  
Field Efficiency ◽  
User Friendly

Harvesting is one of the major labor intensive works in rice cultivation. Appropriate harvesting machinery is urgently needed to reduce labor and production costs. Production cost of rice becomes high due to labor shortage and high wage rate during harvesting time. Techno-economic performance of Korean self-propelled reaper (KR), China self-propelled reaper (CR) and BRRI reaper (BR) were evaluated in order to identify the field constrains and problems of the reapers at Mithapukur of Rangpur, Bangladesh during Aman season of 2013. The actual field capacities of the KR, CR and BR were found 0.18, 0.17 and 0.15 ha h–1with the corresponding field efficiency of 55, 68 and 56%, respectively. The variation of field capacity among the models was due to turning time losses, weight of the reaper and operator’s skill. The fuel consumption of the reapers was 4.11, 2.61 and 8.39 l ha–1 for KR, CR and BR, respectively. The shattering loss of paddy harvesting was 1.66, 1.50 and 1.45% for KR, CR and BR, respectively. The break-even area of the reapers was 9.15, 7.82 and 8.43 ha yr-1 for KR, CR and BR, respectively. It is evident that the reaper could be used successfully as labor saving and user friendly technology to eliminate post-harvest problems in Bangladesh.J. Bangladesh Agril. Univ. 16(1): 144-150, April 2018

Fault diagnosis and economic performance evaluation for a simulated base metal leaching operation

2018 ◽  
Vol 123 ◽  
pp. 128-143 ◽  
Author(s):  
Johannes Jacobus Strydom ◽  
Jason John Miskin ◽  
John Themba McCoy ◽  
Lidia Auret ◽  
Christie Dorfling
Keyword(s):  
Performance Evaluation ◽  
Fault Diagnosis ◽  
Base Metal ◽  
Economic Performance ◽  
Metal Leaching

Exergo-Economic Performance Evaluation of Enhanced Tube under Equivalent Pump Power Consumption

2011 ◽  
Vol 354-355 ◽  
pp. 310-314
Author(s):  
Shuang Ying Wu ◽  
Lan Xiao ◽  
Si Min Chen ◽  
Feng Hua Guo
Keyword(s):  
Performance Evaluation ◽  
Power Consumption ◽  
Economic Performance ◽  
Evaluation Criterion ◽  
Smooth Tube ◽  
Corrugated Tube ◽  
Performance Evaluation Criterion ◽  
Enhanced Tube ◽  
Engineering Significance ◽  
Profit Value

Based on the first and second laws of thermodynamics as well as exergo-economic theory, comprehensive performance evaluation criterion has been proposed for enhanced tube under the condition of equivalent pump (fan) power consumption, accounting for a variety of factors such as heat transfer, flow and investment costs. Performance evaluation criterion formula, namely, net profit value (NPV) has been derived from the perspective of the exergy recovery. Take spirally corrugated tube as an example, the results show that the exergo-economic performance of the spirally corrugated tube is superior to smooth tube for the range considered in the present study. From the viewpoint of NPV, although NPV of enhanced tube is greater than that of smooth tube, there exist critical values of Re and Nq exceeding which NPV of enhanced tube would be less than zero, showing no engineering significance.

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