scholarly journals Closure to “Discussion of ‘Integration of a New Process Into an Existing Site: A Case Study in the Application of Exergy Analysis’” (1991, J. Eng. Gas Turbines Power, 113, pp. 180–181)

1991 ◽  
Vol 113 (2) ◽  
pp. 181-183
Author(s):  
R. A. Gaggioli ◽  
D. A. Sama ◽  
Sanhong Qian ◽  
Y. M. El-Sayed
Keyword(s):  
Gas Turbines ◽  
Exergy Analysis ◽  
New Process

Evaluations for New Healthcare Environment Commissioning and Operational Decision Making Using Simulation and Human Factors: A Case Study of an Interventional Trauma Operating Room

2021 ◽  
pp. 193758672199966
Author(s):  
Mirette Dubé ◽  
Jason Laberge ◽  
Elaine Sigalet ◽  
Jonas Shultz ◽  
Christine Vis ◽  
...  
Keyword(s):  
Decision Making ◽  
Human Factors ◽  
Operating Room ◽  
Healthcare Services ◽  
Healthcare Team ◽  
Healthcare Environment ◽  
New Process ◽  
Timely Access ◽  
Operational Decision Making

Purpose: The aim of this article is to provide a case study example of the preopening phase of an interventional trauma operating room (ITOR) using systems-focused simulation and human factor evaluations for healthcare environment commissioning. Background: Systems-focused simulation, underpinned by human factors science, is increasingly being used as a quality improvement tool to test and evaluate healthcare spaces with the stakeholders that use them. Purposeful real-to-life simulated events are rehearsed to allow healthcare teams opportunity to identify what is working well and what needs improvement within the work system such as tasks, environments, and processes that support the delivery of healthcare services. This project highlights salient evaluation objectives and methods used within the clinical commissioning phase of one of the first ITORs in Canada. Methods: A multistaged evaluation project to support clinical commissioning was facilitated engaging 24 stakeholder groups. Key evaluation objectives highlighted include the evaluation of two transport routes, switching of operating room (OR) tabletops, the use of the C-arm, and timely access to lead in the OR. Multiple evaluation methods were used including observation, debriefing, time-based metrics, distance wheel metrics, equipment adjustment counts, and other transport route considerations. Results: The evaluation resulted in several types of data that allowed for informed decision making for the most effective, efficient, and safest transport route for an exsanguinating trauma patient and healthcare team; improved efficiencies in use of the C-arm, significantly reduced the time to access lead; and uncovered a new process for switching OR tabletop due to safety threats identified.

scholarly journals Development and Results from Application of PCM-Based Storage Tanks in a Solar Thermal Comfort System of an Institutional Building—A Case Study

Energies ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3877 ◽  
Author(s):  
F. Javier Batlles ◽  
Bartosz Gil ◽  
Svetlana Ushak ◽  
Jacek Kasperski ◽  
Marcos Luján ◽  
...  
Keyword(s):  
Phase Change Materials ◽  
Exergy Analysis ◽  
Heating System ◽  
Storage Tanks ◽  
Research Groups ◽  
Energy Research ◽  
Solar Cooling ◽  
Daily Energy ◽  
The University

An important element of a solar installation is the storage tank. When properly selected and operated, it can bring numerous benefits. The presented research relates to a project that is implemented at the Solar Energy Research Center of the University of Almeria in Spain. In order to improve the operation of the solar cooling and heating system of the Center, it was upgraded with two newly designed storage tanks filled with phase change materials (PCM). As a result of design works, commercial material S10 was selected for the accumulation of cold, and S46 for the accumulation of heat, in an amount of 85% and 15%, respectively. The article presents in detail the process of selecting the PCM material, designing the installation, experimental research, and exergy analysis. Individual tasks were carried out by research groups cooperating under the PCMSOL EUROPEAN PROJECT. Results of tests conducted on the constructed installation indicate that daily energy saving when using a solar chiller with PCM tanks amounts to 40% during the cooling season.

Exergy analysis and exergoeconomic assessment of trigeneration system: a case study

2021 ◽  
Vol 35 (4) ◽  
pp. 527
Author(s):  
Ana Lívia Formiga Leite ◽  
Carlos Antônio Cabral Dos Santos ◽  
Alvaro Antonio Villa Ochoa ◽  
Paula Suemy Arruda Michima
Keyword(s):  
Exergy Analysis ◽  
System A

Applications of an Interactive Balancing Procedure for Gas Turbines and Other Turbomachinery

2009 ◽  
Author(s):  
Timothy C. Allison ◽  
Harold R. Simmons
Keyword(s):  
Cost Function ◽  
Least Squares ◽  
Gas Turbine ◽  
Case Studies ◽  
Gas Turbines ◽  
Interactive Approach ◽  
Interactive Method ◽  
Balance Weight ◽  
The Cost

Least squares balancing methods have been applied for many years to reduce vibration levels of turbomachinery. This approach yields an optimal configuration of balancing weights to reduce a given cost function. However, in many situations, the cost function is not well-defined by the problem, and a more interactive method of determining the effects of balance weight placement is desirable. An interactive balancing procedure is outlined and implemented in an Excel spreadsheet. The usefulness of this interactive approach is highlighted in balancing case studies of a GE LM5000 gas turbine and an industrial fan. In each case study, attention is given to practical aspects of balancing such as sensor placement and balancing limitations.

scholarly journals Exergy As a Measure of Sustainable Retrofitting of Buildings

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 3139 ◽  
Author(s):  
Carlos Fernández Bandera ◽  
Ana Muñoz Mardones ◽  
Hu Du ◽  
Juan Echevarría Trueba ◽  
Germán Ramos Ruiz
Keyword(s):  
High Performance ◽  
Exergy Analysis ◽  
Local Contexts ◽  
Primary Selection ◽  
Optimization Methodology ◽  
The One ◽  
Reference Environment ◽  
Architectural Characteristics ◽  
The University

This study presents a novel optimization methodology for choosing optimal building retrofitting strategies based on the concept of exergy analysis. The study demonstrates that the building exergy analysis may open new opportunities in the design of an optimal retrofit solution despite being a theoretical approach based on the high performance of a Carnot reverse cycle. This exergy-based solution is different from the one selected through traditional efficient retrofits where minimizing energy consumption is the primary selection criteria. The new solution connects the building with the reference environment, which acts as “an unlimited sink or unlimited sources of energy”, and it adapts the building to maximize the intake of energy resources from the reference environment. The building hosting the School of Architecture at the University of Navarra has been chosen as the case study building. The unique architectural appearance and bespoke architectural characteristics of the building limit the choices of retrofitting solutions; therefore, retrofitting solutions on the façade, roof, roof skylight and windows are considered in multi-objective optimization using the jEPlus package. It is remarkable that different retrofitting solutions have been obtained for energy-driven and exergy-driven optimization, respectively. Considering the local contexts and all possible reference environments for the building, three “unlimited sinks or unlimited sources of energy” are selected for the case study building to explore exergy-driven optimization: the external air, the ground in the surrounding area and the nearby river. The evidence shows that no matter which reference environment is chosen, an identical envelope retrofitting solution has been obtained.

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