Energy Analysis for Two Production Systems of Cucumber

H. Eskandari; S. N. Mosavian

Volume 14, Issue 2 , April 2023, Pages 96-101

  This research, conducted in Gotvand, southwest of Iran, compared the energy consumption of two cucumber production systems: field and greenhouse production systems. In this study, energy inputs of two production systems of cucumber (including seed, pesticide, human labor, machinery, diesel fuel, electricity, ...  Read More

Hydropower Development in Three South American Countries: Brazil, Colombia, and Ecuador

S. Naranjo-Silva; D. Punina-Guerrero; J. Barros-Enriquez; J. Almeida-Dominguez; J. Alvarez del Castillo

Volume 14, Issue 2 , April 2023, Pages 102-110

  The present manuscript aims to identify the advantages and consequences of hydropower development, showing a view of trends finding the status and situation in Brazil, Colombia, and Ecuador. This study uses a non-experimental methodology based on a comprehensive literature review of relevant papers retrieved ...  Read More

Water Resources Engineering
Testing and Evaluation of Surge Flow Gate For Discharge Measurement Under Different Operating Conditions

S. Mahmood; M. M. Saeed; Z. Kılıç; M. Iqbal; H. A. Rehman

Volume 14, Issue 2 , April 2023, Pages 111-117

  With surge irrigation, applying surges to an area is a cheap labor task. In industrialized nations, a variety of electronic valves for discontinuous water application (surges) are available; but their pricing prevents their usage in emerging regions. Additionally, these valves are too advanced for use ...  Read More

Investigating the Effect of Different Proportions of Iwan and Window Area of Adjacent Room on Cooling/Heating Load and Energy Consumption in Central Courtyard Model in Yazd

A. Kamyab; M. Mahmoodi Zarandi; M. Nikpour

Volume 14, Issue 2 , April 2023, Pages 118-126

  The city of Yazd has a large number of traditional houses. Houses with central courtyards and an Iwan were suitable for establishing thermal comfort conditions. In this research, the effect of Iwan's depth and the ratio of the adjacent room's openings on the comfort condition in the residential courtyard ...  Read More

Thermodynamic Modeling and Analysis of a Solar and Geothermal-driven Multigeneration System Using TiO2 and SiO2 Nanoparticles

A. Habibzadeh; M. Abbasalizadeh; I. Mirzaee; S. Jafarmadar; H. Shirvani

Volume 14, Issue 2 , April 2023, Pages 127-138

  In this study, renewable energy sources including a high-temperature solar parabolic trough collector and geothermal water integrated with a modified Kalina cycle, a combined ORC-EJR cycle, an electrolyzer, an RO desalination unit, and a domestic water heater. SiO2 and TiO2 nanoparticles dissolved in ...  Read More

Investigating the Effects of Blockage Ratio on the Performance of a Surface-piercing Propeller in Free Surface Water Tunnel Tests

M. Beykani; R. Shafaghat; A. Yousefi

Volume 14, Issue 2 , April 2023, Pages 139-152

  This paper investigates the effect of the immersion ratio parameter on the hydrodynamic performance of three surface-piercing propellers with diameters of 0.125, 0.132 and 0.140m at different advancing speeds. Experimental tests have been carried out in the free surface water tunnel of the Babol Noshirvani ...  Read More

Effect of Wastewater Curing and Elevated Temperature on Recycled Concrete Aggregates from Construction and Demolition Wastes

N. Masne; S. Suryawanshi

Volume 14, Issue 2 , April 2023, Pages 153-159

  In this study, natural coarse aggregates were replaced with coarse recycled concrete aggregate (RCA) in 0 %, 50 %, and 100 % extracted from construction and demolition wastes. Their recycling could lead to a greener resolution for preserving the environment and paving the way for sustainability through ...  Read More

Providing Solutions to Improve Environmental Performance of Universities Based on GreenMetric System

A. Ghalehnovi; H. Kamelnia

Volume 14, Issue 2 , April 2023, Pages 160-167

  Today, the focus on the sustainability issue in universities has become of significance considering the climatic and environmental issues. Therefore, universities are moving toward uniting the sustainability methods in their systems. Currently, many universities in Iran are performing essential activities ...  Read More

Chemical Engineering
Modeling of a Novel Magneto-electro-elastic Energy Harvesting System Subjected to Applied Electric Voltage with Simultaneous Use as an Electrical Actuator System

M. Moory Shirbani; M. Shishehsaz

Volume 14, Issue 2 , April 2023, Pages 168-176

  This paper introduces a novel harvester to store the electrical power, which comes from the power of external applied electrical voltage. In the last decade, most of the energy harvesters have been designed and analyzed in the form of cantilever beams. In the present article, the harvesters are analyzed ...  Read More

Chemical Engineering
Thermodynamic and Exergo-economic Analyses of Waste Heat Recovery of a Two-shaft Turbofan Engine Using Supercritical Carbon Dioxide Brayton Cycle

A. Kamani; I. Mirzaee; N. Pourmahmoud

Volume 14, Issue 2 , April 2023, Pages 177-188

  In this study, first-law, second-law, and exergo-economic investigations are accomplished to recover the waste heat of a two-shaft turbofan engine applying a supercritical carbon dioxide Brayton cycle. The efficacy of different operating parameters including the inlet temperature of the turbine, the ...  Read More

Thermal Analysis of New Solar Air Heater with Inclined Perforated Absorber Plates: Experimental Study

H. Farzan; M. Mahmoudi; E. Hasan Zaim

Volume 14, Issue 2 , April 2023, Pages 189-196

  Solar air heaters (SAHs) have an inherent drawback: the conventional mechanism is low inside these collectors’ types. Use of perforations is a simple technique to improve convection, and this investigation experimentally assesses a novel design SAH utilizing three inclined perforated absorber plates. ...  Read More