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Full-Text Articles in Engineering
A Building Energy Efficiency Optimization Method By Evaluating The Effective Thermal Zones Occupancy, Anna Laura Pisello, Michael Bobker, Franco Cotana
A Building Energy Efficiency Optimization Method By Evaluating The Effective Thermal Zones Occupancy, Anna Laura Pisello, Michael Bobker, Franco Cotana
Publications and Research
Building energy efficiency is strongly linked to the operations and control systems, together with the integrated performance of passive and active systems. In new high quality buildings in particular, where these two latter aspects have been already implemented at the design stage, users’ perspective, obtained through post-occupancy assessment, has to be considered to reduce whole energy requirement during service life. This research presents an innovative and low-cost methodology to reduce buildings’ energy requirements through post-occupancy assessment and optimization of energy operations using effective users’ attitudes and requirements as feedback. As a meaningful example, the proposed method is applied to a …
Formulation & Thermophysical Analysis Of A Beeswax Microemulsion & The Experimental Calculation Of Its Heat Transfer Coefficient, Ravi Ramnanan-Singh
Formulation & Thermophysical Analysis Of A Beeswax Microemulsion & The Experimental Calculation Of Its Heat Transfer Coefficient, Ravi Ramnanan-Singh
Dissertations and Theses
Experimentation and implementation of Phase Change Materials (PCM) as suitable Thermal Energy Storage (TES) mediums has garnered greater attention in recent decades. PCMs have the ability to not only store Sensible Heat (SH) within a given temperature range, but also store large amounts of Latent Heat (LH) as they undergo a phase change, whether it is from solid to liquid or liquid to gas. This investigation examines the preparation of a beeswax microemulsion, the analysis of its thermophysical properties, and the experimental method to calculate its heat transfer coefficient under laminar flow conditions. First, the beeswax microemulsion was formulated to …
Exploration Of The Endothermic And Exothermic Reactions Of Calcium Oxide And Magnesium Oxide And Design Of A Vessel For A Thermochemical Heat Storage System, Jorge Pulido
Dissertations and Theses
A high temperature Thermal Energy Storage (TES) system has been investigated for use in solar thermal power plants or in vehicles to preheat the engine and/or the cabin in cold weather. The idea is to store surplus thermal energy and then release it on demand to heat a working fluid. The stored heat can be used to generate electricity after sunset or to meet the peak loads. These would lead to an improvement in energy efficiency, reductions in energy imports from foreign sources and total energy-related emissions. The basic operating principle involved in the TES system is a thermochemical reaction …
Feasibility Analysis Of Estrification Systems With Entrainers, Kang Wook Lee
Feasibility Analysis Of Estrification Systems With Entrainers, Kang Wook Lee
Dissertations and Theses
(Ethyl Acetate) and IPA (Isopropyl Acetate) production systems are studied in terms of the feasibility analysis. It is not feasible to retrieve pure products by a simple reactive distillation for IPA production system because CCR (Critical Composition Region) covers the entire desired binary edge for IPA system. On the other hand, even though CCR does not cover the entire desired binary edge of the EA system completely, internal reflux ratio (IRR) analysis does not allow the production of the pure product via reactive distillation for EA production system. To overcome the restraints, external entrainers are utilized to take advantage of …
Lattice Boltzmann Simulation Of Binary Drop Coalescence At Low Weber Number, Lina Baroudi
Lattice Boltzmann Simulation Of Binary Drop Coalescence At Low Weber Number, Lina Baroudi
Dissertations and Theses
"A numerical study has been performed using a lattice Boltzmann method (LBM) for an incompressible binary fluid based on the Cahn-Hilliard diffuse interface approach to investigate the early-time coalescence dynamics of two liquid drops. The two drops approach each other at a very low Weber number (We) and the coalescence process is driven by surface tension. When the two drops come into contact, the curvature diverges and causes infinitely large surface tension forces, leading to the formation of a rapidly growing liquid bridge. Depending on the forces that govern the widening of the liquid bridge, the coalescence dynamics can be …
An Investigation On Cocombustion Behaviors Of Hydrothermally Treated Municipal Solid Waste With Coal Using A Drop-Tube Reactor, Liang Lu, Yuqi Jin, Masato R. Nakamura, Marco J. Castaldi, Kunio Yoshikawa
An Investigation On Cocombustion Behaviors Of Hydrothermally Treated Municipal Solid Waste With Coal Using A Drop-Tube Reactor, Liang Lu, Yuqi Jin, Masato R. Nakamura, Marco J. Castaldi, Kunio Yoshikawa
Publications and Research
This work aims at demonstrating the feasibility of replacing Indonesian coal (INC) with hydrothermally treated municipal solid waste (MSWH) in cocombustion with high ash Indian coal (IC). The combustion efficiencies and emissions (CO, NO) of MSWH, INC and their blends with IC for a series of tests performed under a range of temperatures and air conditions were tested in a drop- tube reactor (DTR). The results showed the following. The combustion efficiency of IC was increased by blending both MSWH and INC and CO emission was reduced with increasing temperature. For NO emission, the blending of MSWH led to the …