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Semi-Supervised Learning Algorithm For Running-In Analysis On Compressors, Jonatan Leandro Machado, Gabriel Thaler, Rodolfo César Costa Flesch, João Paulo Zomer Machado Jan 2024

Semi-Supervised Learning Algorithm For Running-In Analysis On Compressors, Jonatan Leandro Machado, Gabriel Thaler, Rodolfo César Costa Flesch, João Paulo Zomer Machado

International Compressor Engineering Conference

No abstract provided.


Experimental Investigation Of Liquid Slugging In Reciprocating Compressors, Teo B. Balconi, Tadeu T. Rodrigues, Cesar J. Deschamps Jan 2024

Experimental Investigation Of Liquid Slugging In Reciprocating Compressors, Teo B. Balconi, Tadeu T. Rodrigues, Cesar J. Deschamps

International Compressor Engineering Conference

No abstract provided.


Oil Temperature Characterisation In A Direct Suction Scroll Compressor, Nicolás Gómez Parada, Francisco Barceló Ruescas, José Gonzálvez Maciá Jan 2024

Oil Temperature Characterisation In A Direct Suction Scroll Compressor, Nicolás Gómez Parada, Francisco Barceló Ruescas, José Gonzálvez Maciá

International Compressor Engineering Conference

No abstract provided.


Prediction Of Reed Valve Velocity Impact, Igor L. L. P. Silva, Artur D. Favera, Claudio J. Santos, Cesar J. Deschamps Jan 2024

Prediction Of Reed Valve Velocity Impact, Igor L. L. P. Silva, Artur D. Favera, Claudio J. Santos, Cesar J. Deschamps

International Compressor Engineering Conference

No abstract provided.


Investigation Of The Impact Of Reduced Density Low-Gwp Refrigerants In A Commercial R-410a Scroll Compressor, Graham Alexander Tyra, Shahzad Yousaf, Craig Bradshaw Jan 2024

Investigation Of The Impact Of Reduced Density Low-Gwp Refrigerants In A Commercial R-410a Scroll Compressor, Graham Alexander Tyra, Shahzad Yousaf, Craig Bradshaw

International Compressor Engineering Conference

No abstract provided.


Performance Of A Scroll Compressor Working With Drop-In Refrigerant Replacements To R134a, Riccardo Conte, Marco Azzolin, Stefano Bernardinello, Davide Del Col Jan 2024

Performance Of A Scroll Compressor Working With Drop-In Refrigerant Replacements To R134a, Riccardo Conte, Marco Azzolin, Stefano Bernardinello, Davide Del Col

International Compressor Engineering Conference

No abstract provided.


Investigation Of Refrigerant Dissolution Into Thin Oil Film During Compression Process, Wannarat Rakpakdee, Kei Watanabe, Yunong Lei, Mitsuhiro Fukuta, Masaaki Motozawa, Shohei Atobe Jan 2024

Investigation Of Refrigerant Dissolution Into Thin Oil Film During Compression Process, Wannarat Rakpakdee, Kei Watanabe, Yunong Lei, Mitsuhiro Fukuta, Masaaki Motozawa, Shohei Atobe

International Compressor Engineering Conference

No abstract provided.


Evaluating The Performance Of Oil-Free Floating Scroll Pumps In Multiphase Flow Applications, Dave Cai, Oliver Ni Jan 2024

Evaluating The Performance Of Oil-Free Floating Scroll Pumps In Multiphase Flow Applications, Dave Cai, Oliver Ni

International Compressor Engineering Conference

No abstract provided.


An Empirical Model For A Co2 Thermal Compressor Based On Experimental Data, Ali Salame, Vincent Lemort, Pascal Dufour, Madiha Nadri, Rabah Ibsaine Jan 2024

An Empirical Model For A Co2 Thermal Compressor Based On Experimental Data, Ali Salame, Vincent Lemort, Pascal Dufour, Madiha Nadri, Rabah Ibsaine

International Compressor Engineering Conference

No abstract provided.


An Integrated Workflow For Addressing Performance, Dynamics, Tribological And Nvh Issues In Scroll Compressors, Sibi Kandasamy, Rodrigo Aihara, Rifat Keribar, Ali Afshari, Zhiqiang Wang, Chao Ma, Dejun Song Jan 2024

An Integrated Workflow For Addressing Performance, Dynamics, Tribological And Nvh Issues In Scroll Compressors, Sibi Kandasamy, Rodrigo Aihara, Rifat Keribar, Ali Afshari, Zhiqiang Wang, Chao Ma, Dejun Song

International Compressor Engineering Conference

No abstract provided.


Flow Visualization Of Injection Process Of R134a Scroll Compressor, Inchan Hwang, Sangwook Lee, Giulia Lombardo, Stefano Rossi, Davide Menegazzo, Laura Fedele, Sergio Bobbo, Min Soo Kim Jan 2024

Flow Visualization Of Injection Process Of R134a Scroll Compressor, Inchan Hwang, Sangwook Lee, Giulia Lombardo, Stefano Rossi, Davide Menegazzo, Laura Fedele, Sergio Bobbo, Min Soo Kim

International Compressor Engineering Conference

No abstract provided.


Single-Phase Induction Motor Design Optimization For Hermetic Rotary Compressor In Heat Pump Water Heating Applications, Osmar Pinheiro, Jônatas Lacerda, Lino Marco Jan 2024

Single-Phase Induction Motor Design Optimization For Hermetic Rotary Compressor In Heat Pump Water Heating Applications, Osmar Pinheiro, Jônatas Lacerda, Lino Marco

International Compressor Engineering Conference

No abstract provided.


Development Of A Mechanistic Chamber Model For Twin-Screw Compressors With Detailed Sub-Models For Estimating The Bearing Loads, Abhignan Saravana, Haotian Liu, Eckhard A. Groll, Davide Ziviani Jan 2024

Development Of A Mechanistic Chamber Model For Twin-Screw Compressors With Detailed Sub-Models For Estimating The Bearing Loads, Abhignan Saravana, Haotian Liu, Eckhard A. Groll, Davide Ziviani

International Compressor Engineering Conference

No abstract provided.


Advancements In Compressor Valve Steel For Enhanced Performance In Refrigeration And Freezer Applications, Anders Hoel, Stefan Jonsson, Guofan Zhang Jan 2024

Advancements In Compressor Valve Steel For Enhanced Performance In Refrigeration And Freezer Applications, Anders Hoel, Stefan Jonsson, Guofan Zhang

International Compressor Engineering Conference

No abstract provided.


Investigating Occupant Thermostat-Adjustment Behavioral Patterns In Different Heat Pump Operation Modes: A Field Experiment, Feng Wu, Hemanth Devarapalli, Hyeongseok Lee, Huijeong Kim, Jaehyun Go, Panagiota Karava, James E. Braun, W. Travis Horton, Kevin J. Kircher, Davide Ziviani Jan 2024

Investigating Occupant Thermostat-Adjustment Behavioral Patterns In Different Heat Pump Operation Modes: A Field Experiment, Feng Wu, Hemanth Devarapalli, Hyeongseok Lee, Huijeong Kim, Jaehyun Go, Panagiota Karava, James E. Braun, W. Travis Horton, Kevin J. Kircher, Davide Ziviani

International High Performance Buildings Conference

No abstract provided.


Influence Of Suction Conditions And Refrigerant Fluid On Scroll Compressor Mass Flow Rate And Extrapolation Strategies, Javier Marchante-Avellaneda, Rubén Ossorio, Emilio Navarro-Peris, Som S. Shrestha Jan 2024

Influence Of Suction Conditions And Refrigerant Fluid On Scroll Compressor Mass Flow Rate And Extrapolation Strategies, Javier Marchante-Avellaneda, Rubén Ossorio, Emilio Navarro-Peris, Som S. Shrestha

International Compressor Engineering Conference

No abstract provided.


Robust Inverse Parameter Fitting Of Thermal Properties From The Laser-Based Angstrom Method In The Presence Of Measurement Noise Using Physics-Informed Neural Networks (Pinns), Shanmukhi Sripada, Aalok U. Gaitonde, Justin A. Weibel, Amy M. Marconnet Jan 2024

Robust Inverse Parameter Fitting Of Thermal Properties From The Laser-Based Angstrom Method In The Presence Of Measurement Noise Using Physics-Informed Neural Networks (Pinns), Shanmukhi Sripada, Aalok U. Gaitonde, Justin A. Weibel, Amy M. Marconnet

CTRC Research Publications

The two-dimensional laser-based Ångstrom method measures the in-plane thermal properties for anisotropic film-like materials. It involves periodic laser heating at the center of a suspended film sample and records its transient thermal response by infrared imaging. These spatiotemporal temperature data must be analyzed to extract the unknown thermal conductivity values in the orthotropic directions, an inverse parameter fitting problem. Previous demonstration of the metrology technique used a least-squares fitting method that relies on numerical differentiation to evaluate the second-order partial derivatives in the differential equation describing transient conduction in the physical system. This fitting approach is susceptible to measurement noise, …


Experimental Investigation Of Post And Vented Vapor Chamber Designs For High Heat Flux Dissipation, Danny J. Lohan, Shailesh N. Joshi, Ercan M. Dede, Srivathsan Sudhakar, Justin A. Weibel Jan 2024

Experimental Investigation Of Post And Vented Vapor Chamber Designs For High Heat Flux Dissipation, Danny J. Lohan, Shailesh N. Joshi, Ercan M. Dede, Srivathsan Sudhakar, Justin A. Weibel

CTRC Research Publications

To enhance the dryout heat flux of vapor chambers over a 1 cm × 1 cm area, this study describes the testing of four different vapor chamber design architectures (each having an overall size of 50 mm × 50 mm × 5.5 mm). The designs leverage a combination of internal liquid feeding posts and evaporator vapor venting features to improve the capillary-fed boiling performance. The study provides systematic insight into increasing the dryout limit of a vapor chamber and lowering the thermal resistance by assessing the effect of each geometric feature independently. A jet impingement air cooling test facility is …


Deep Learning-Based Quantification Of Heat Gains And Impact On Building Energy Demand, Dongjun Mah, Hubo Cai, Kevin J. Kircher, Athanasios Tzempelikos Jan 2024

Deep Learning-Based Quantification Of Heat Gains And Impact On Building Energy Demand, Dongjun Mah, Hubo Cai, Kevin J. Kircher, Athanasios Tzempelikos

International High Performance Buildings Conference

No abstract provided.


The Benefits Of Buried Ducts - Beyond What We Know Today., Rebecca Evans, Simon Pallin, Keith Saechao Jan 2024

The Benefits Of Buried Ducts - Beyond What We Know Today., Rebecca Evans, Simon Pallin, Keith Saechao

International High Performance Buildings Conference

No abstract provided.


Advanced Predictive Rule-Based Control For Hvac Cost Reduction Under Dynamic Electricity Pricing In Residential Buildings, Avik Ghosh, Xing Lu, Veronica Adetola Jan 2024

Advanced Predictive Rule-Based Control For Hvac Cost Reduction Under Dynamic Electricity Pricing In Residential Buildings, Avik Ghosh, Xing Lu, Veronica Adetola

International High Performance Buildings Conference

No abstract provided.


Detailed Analysis Of Energy Demand And Covid-19 Impacts On Hotel Buildings, Hendrik Margraf, Fatih Meral, Federico Lonardi, Andrea Luke Jan 2024

Detailed Analysis Of Energy Demand And Covid-19 Impacts On Hotel Buildings, Hendrik Margraf, Fatih Meral, Federico Lonardi, Andrea Luke

International High Performance Buildings Conference

No abstract provided.


Development Of Self-Correction Algorithms For Thermostats Using Openapi Capabilities, Yimin Chen, Eliot Crowe, Jessica Granderson Jan 2024

Development Of Self-Correction Algorithms For Thermostats Using Openapi Capabilities, Yimin Chen, Eliot Crowe, Jessica Granderson

International High Performance Buildings Conference

No abstract provided.


Indoor Nanoparticle Emissions And Exposures During Heat-Based Hair Styling Activities, Jianghui Liu, Jinglin Jiang, Satya Patra, Xiaosu Ding, Chunxu Huang, Jordan Cross, Brandon Boor, Nusrat Jung Jan 2024

Indoor Nanoparticle Emissions And Exposures During Heat-Based Hair Styling Activities, Jianghui Liu, Jinglin Jiang, Satya Patra, Xiaosu Ding, Chunxu Huang, Jordan Cross, Brandon Boor, Nusrat Jung

International High Performance Buildings Conference

No abstract provided.


Performance Testing Of A Liquid-Injected Roots Compressor For R718, Thomas Werner Moesch, Moritz Enge, Veith Niklas Kaspar, Julian Hoffner, Justus Franzen, Yves Burgold, Konrad Klotsche, Christiane Thomas Jan 2024

Performance Testing Of A Liquid-Injected Roots Compressor For R718, Thomas Werner Moesch, Moritz Enge, Veith Niklas Kaspar, Julian Hoffner, Justus Franzen, Yves Burgold, Konrad Klotsche, Christiane Thomas

International Compressor Engineering Conference

No abstract provided.


New Understanding Of Precession-Rolling-Induced Oil Film Pressure In Thrust-Slide Bearings In Scroll Compressors, Keiko Anami, Masaru Tanaka, Kenichi Sata, Hideki Matsuura, Yukiko Maejima, Kosuke Nishimura, Kanetaka Miyazawa Jan 2024

New Understanding Of Precession-Rolling-Induced Oil Film Pressure In Thrust-Slide Bearings In Scroll Compressors, Keiko Anami, Masaru Tanaka, Kenichi Sata, Hideki Matsuura, Yukiko Maejima, Kosuke Nishimura, Kanetaka Miyazawa

International Compressor Engineering Conference

No abstract provided.


Numerical Analysis Scheme For Predicting The Oil Level Variation In Horizontal Rotary Compressor, Joonhyung Kim, Munseong Kwon, Jongwon Choi, Sedong Lee, Sunghyuk Park Jan 2024

Numerical Analysis Scheme For Predicting The Oil Level Variation In Horizontal Rotary Compressor, Joonhyung Kim, Munseong Kwon, Jongwon Choi, Sedong Lee, Sunghyuk Park

International Compressor Engineering Conference

No abstract provided.


Dynamic Reed Valve In Rolling Piston Compressor: A 3-Dimensional Transient Cfd Simulation, Nirav Chaudhari, Chinmoy K. Mohapatra, Hui Ding, Haiyang Gao Jan 2024

Dynamic Reed Valve In Rolling Piston Compressor: A 3-Dimensional Transient Cfd Simulation, Nirav Chaudhari, Chinmoy K. Mohapatra, Hui Ding, Haiyang Gao

International Compressor Engineering Conference

No abstract provided.


Assessing Industry-Critical Skill Development In Engineering Technology Capstone Courses, Rustin Webster, Matthew Turner Jan 2024

Assessing Industry-Critical Skill Development In Engineering Technology Capstone Courses, Rustin Webster, Matthew Turner

School of Engineering Technology Faculty Publications

To meet industrial expectations, engineering and engineering technology (ET) graduates are expected to possess the critical competencies of design, problem-solving, communication, and teamwork. However, industry stakeholders and academic studies routinely identify these as skills gaps: areas graduates need to develop to a higher standard or are currently lacking when entering the work force. To address this issue, many undergraduate programs in the United States have implemented a comprehensive and integrative experience at the end of an academic program, often called a capstone course(s). The rate of adoption has grown such that approximately three-quarters of all undergraduate and graduate institutions include …


Maintenance Decision Criteria In Facility Management, Deniz Besiktepe, Mehmet E. Ozbek, Rebecca Atadero Jan 2024

Maintenance Decision Criteria In Facility Management, Deniz Besiktepe, Mehmet E. Ozbek, Rebecca Atadero

Bowen School of Construction Faculty Publications

This research report investigates how facilities management (FM) professionals make decisions about building maintenance, a central responsibility in FM that accounts for a majority of operational effort and costs. Given the complexity of maintenance activities and the many conflicting factors involved (like cost, safety, condition, schedules, and compliance), the study aims to identify and rank key criteria that influence maintenance decision-making. To do this, the authors conducted a comprehensive literature review and a nationwide survey of facilities management professionals from IFMA and APPA. The result is a set of fundamental decision criteria (e.g., health and safety, code compliance, condition, cost, …