Abstract This project attempts to evaluate the effect of nanofluids on thermal performance and economic parameters shell tube heat exchangers. First, two thermodynamic processes including combined power (CHP) system solar-driven organic Rankine cycle (ORC) are simulated using Aspen HYSYS. The CHP ORC systems can produce 25 MW 175.8 kW electrical power, respectively. Thereafter, use in exchanger...

Succulent halophyte Salicornia sp. was characterized to evaluate its suitability for biorefinery, as soil salinization is seen a major agricultural issue and the demand biofuel increasing. Green fractionation of biomass approach chosen, with liquid solid fractions considered separately. Soxhlet extractions were used separate different biochemical groups from pulp, lignocellulosic residue hydrot...

Purpose This paper aims to comprehensively clarify the research status of thermal transport supercritical aviation kerosene, with particular interests in effect cracking on heat transfer. Design/methodology/approach A brief review current kerosene is presented views surrogate model hydrocarbon fuels, chemical mechanism thermo-physical properties turbulence models, flow characteristics and perfo...

Waste heat recovery (WHR) systems through organic rankine cycles (ORCs) in anaerobic digestion plants may improve cogeneration efficiency. Cogeneration unit power output, flue gas temperature, and mass flow rate are not constant during the day, thermal load requested by digesters shows seasonal variations. For this reason, a proper design of ORC is required. In study, methodology proposed, base...

Nowadays, clean and high-power generation is essential matters worldwide. To be improved optimized, power plants require accurate models that can introduced to process simulators. There various commercial software for industrial simulation which not accessible everyone. The open-source DWSIM simulator the first chemical engineering code offers many tools better study of plants. In this paper, w...

Purpose. Determination of the potential efficiency alternative method methane production from subaquatic gas hydrate deposits using emissions underwater mud volcanoes considering geological and thermodynamic conditions typical for Black Sea. Methods. Computer modeling processes changing parameters supplying fluid within pipeline was carried out on basis Aspen Hysys program, Ng Robinson model to...

“Volatile Organic Compounds” (VOCs) are known to contribute significantly environmental pollution. Crude oil loading operations in a marine tanker produces significant quantity of hydrocarbon (HC) vapours the surrounding atmosphere. A large percentage these HC vapour emission consists ‘Volatile Compounds’ (VOCs). This VOC has not been previously analysed detail understand health and impact. The...

Quaking aspen (Populus tremuloides) biomass has declined in Yellowstone National Park (YNP) in the past century. We installed permanent belt transects (plots) for long-term monitoring of aspen stands both within and outside of established wolf pack territories on YNP’s northern range to determine if reintroduced wolves are influencing elk browsing patterns and aspen regeneration through a troph...

Ecologists have debated over the past 65 years whether quaking aspen (Populus tremuloides Michx.) has or has not declined in abundance, vigor, or regeneration in western North America. Many studies have provided divergent interpretations of the condition of aspen forests, leading to difficulty in translating this ecological information into management recommendations. To reconcile these contras...

In western North America, quaking aspen (Populus tremuloides) is the most common hardwood in montane landscapes. Fire suppression, grazing and wildlife management practices, and climate patterns of the past century are all potential threats to aspen coverage in this region. If aspen-dependent species are losing habitat, this raises concerns about their long-term viability. Though lichens have a...