Dry reforming of methane is a process to produce syngas which major precursor for many chemicals and ultra-clean fuels. It CO2-assisted that leads the conversion CO2 higher-value products but also highly endothermic requires significant amounts energy in form emitting For these reasons, this study focused on direct utilization concentrated solar by irradiating catalyst directly rather than via heat transfer fluid or conductive transfer. In addition, it uniquely adopts tubular reactor with...

In this work, temperature regulation and electrical output of a concentrated photovoltaic system coupled with phase change material (CPVPCM) is investigated compared single sun crystalline (PV) system. A fully thermal-optical-electrical model has been developed in-house to conduct the simulation studies for actual weather conditions Doha (Qatar) selected materials (PCMs). The PCMs are lauric acid, RT47, S-series salt, STL47, ClimSelTM C48, RT54, RT60, RT62, RT64. An optical concentration...

This work presents the characteristics of a solar thermal tower power plant in two different places (Seville and Dubai) using three HTFs (NaNO 3 -KNO , KCl-MgCl 2 Li CO -Na -K ) cycles (Rankine, sCO Recompression Partial cooling cycles). An indirect configuration is considered for Gemasolar plant. Detailed modelling carried out conversion incident on heliostat to output electricity. Optimization cycle determine most promising efficiency. The results showed that configuration, performance...

In this work, a novel design of concentrated photovoltaic system with thermal management using phase change material is analyzed. The novelty lies in utilizing two mono-facial cells, installing one on upper side the receiver to receive non-concentrated sunlight and another cell bottom sunlight. An RT47 (melting range 41-48?) enclosed an aluminum containment regulates temperature system. Parabolic trough concentrator used focus concentration ratio 25. A finite volume based coupled thermal,...

Modern manufacturing operations always aim toward sustainable production through operations. Lean Six Sigma is one of the leading models to increase operational efficiency and productivity reduce product costs. The lean problem-solving methodology DMAIC has been several techniques organizations use improve their quality services. This paper aims apply enhance capacity per-unit cost. Furthermore, this research work carried out analyze impact stakeholders on projects. follows investigate root...

In this work, a validated finite element-based coupled optical, thermal, and electrical model is used to assess the performance of dual concentrated photovoltaic system thermally regulated using PCM for environmental conditions Lahore, Pakistan. Thermal management achieved selected PCM. That has melting temperature 53-56?C, thermal conductivity 19 W/mK, heat fusion 220 kJ/kg. regulation power output are analyzed clear day six months year. It found that maximum upper PV cell ~80?C while...

This work deals with different design configurations using existing photon recycling technologies such as front spectral filters and back surface reflectors (BSRs) to improve the efficiency of thermophotovoltaic (TPV) cells. On TPV cell surface, some photons absorb, but quantity them is lost due interference on surface. other hand, BSR mounted backside reflects all which were not absorbed by side emitter, leads elevated temperature more aimed a configuration system model hybrid investigate...

The present study was carried out to evaluate the response of gamma irradiation on Sitotroga cerealella and Trichogramma chilnois under laboratory conditions. Two different egg stages S. cerealella, aged 12 24 hours, were exposed four levels radiation (35, 55, 75 95 Gy) control (no dose). result indicates that low doses viability compared higher doses. Exposure 35 Gy resulted in hatching rate (55.3%) prolonged incubation period (7.06 days) for eggs. In T. chilonis, parasitism percentage...

In this work, we developed a coupled thermal-optical-electrical model for concentrator photovoltaic system integrated with phase change material. We investigated the effect of thermophysical properties PCM and ambient temperature on electrical output. found that increase in from 25 °C to 50 decreases output up 10%. The thermal conductivity beyond 12 Wm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-1</sup> K had negligible low conditions....

The Asian citrus psylla is one of the most serious pests citrus, severely infest leaves and young shoot. To evaluate effectiveness chemicals addressed against nymph adult, via Malathion, Lambda Cyhalothrin, Pyriproxifen Polytrin-c were tested. Experiment was carried out in randomized complete block design with 5 treatment including control replicated three times. Results showed that after first spray, lowest mean population recorded (5.97) which statistically non-significant cyhalothrin...

Solar-driven thermochemical water splitting cycle is a promising, energy efficient and environmentally friendly approach to produce hydrogen. In this paper, numerical work has been undertaken using cylindrical solar receiver investigate fixed variable aperture sizes maintain constant steady-state temperature over day for part of novel hybrid photo-thermochemical sulfur-ammonia cycle. A previously developed validated optical model in commercial software, TracePro? used simulate the light...