Jon Winkler
YOU?
Author Swipe
View article: Using UWB Sensors to Monitor the Danger Zone of Motor–Manual Timber Harvesting Operations
Using UWB Sensors to Monitor the Danger Zone of Motor–Manual Timber Harvesting Operations Open
Sensor technologies for monitoring danger zones during harvesting operations are not yet widely adopted, despite their potential to significantly enhance occupational safety. The objective of this study was to evaluate the performance of a…
View article: Improving Air-Conditioner and Heat Pump Modeling (Presentation made at the Building America Stakeholders Meeting) [Slides]
Improving Air-Conditioner and Heat Pump Modeling (Presentation made at the Building America Stakeholders Meeting) [Slides] Open
A new approach to modeling residential air conditioners and heat pumps allows users to model systems by specifying only the more readily-available SEER/EER/HSPF-type metrics. Manufacturer data was used to generate full sets of model inputs…
View article: Cold Climate Air-Source Heat Pump Demonstration and Analysis: Experimental Study on Cold Temperature Performance
Cold Climate Air-Source Heat Pump Demonstration and Analysis: Experimental Study on Cold Temperature Performance Open
Space heating energy is the largest end use for U.S. residential buildings, accounting for nearly 45% of residential building energy consumption nationwide, and approximately 51% of space heating energy is consumed on-site by combusting na…
View article: Field Validation of Air-Source Heat Pumps for Cold Climates
Field Validation of Air-Source Heat Pumps for Cold Climates Open
Heating energy is the largest end-use for U.S. residential buildings accounting for approximately one-third of residential building energy consumption (EIA 2021). Historically, air-source heat pumps have been limited to temperate climates …
View article: Split heating and cooling systems
Split heating and cooling systems Open
The present disclosure relates to air conditioning systems and methods. An aspect of the present disclosure is a device that includes a housing having an external surface and defining an interior volume, a heat exchanger positioned within …
View article: Systems and methods for thermal imaging technique for measuring mixing of fluids
Systems and methods for thermal imaging technique for measuring mixing of fluids Open
Systems and methods for thermal imaging for measuring mixing of fluids are provided. In one embodiment, a method for measuring mixing of gaseous fluids using thermal imaging comprises: positioning a thermal test medium parallel to a direct…
View article: OpenStudio®-ERI (Energy Rating Index (ERI) Workflow) [SWR-18-72] 1.7.0 Released 12/14/2023
OpenStudio®-ERI (Energy Rating Index (ERI) Workflow) [SWR-18-72] 1.7.0 Released 12/14/2023 Open
The OpenStudio®-ERI project allows calculating an Energy Rating Index (ERI) using the Department of Energy's open-source OpenStudio®/EnergyPlus® simulation platform. The building description is provided in an HPXML file format. The project…
View article: Assessment of Low-Cost Minisplit Heat Pump Connection System
Assessment of Low-Cost Minisplit Heat Pump Connection System Open
This project was funded by SCE's Emerging Technologies Program, and evaluates the feasibility of a connection system that can pave the path to accelerated, cost-effective adoption of high-efficiency Minisplit Heat Pump (MSHP) systems. This…
View article: Barriers to Broader Utilization of Fault Detection Technologies for Improving Residential HVAC Equipment Efficiency
Barriers to Broader Utilization of Fault Detection Technologies for Improving Residential HVAC Equipment Efficiency Open
Faults in residential heating, ventilating, and air conditioning (HVAC) equipment may occur due to poor installation practices or develop over time, and these faults can negatively impact system efficiency, thermal comfort, and equipment l…
View article: Mastering Neural Network Prediction for Enhanced System Reliability
Mastering Neural Network Prediction for Enhanced System Reliability Open
Mastering neural network prediction is crucial for enhancing system reliability across various fields, from healthcare to autonomous driving. Neural networks, with their ability to learn and generalize from vast datasets, offer unparallele…
View article: Understanding Fluid Flow in a Microfluidic Cell Sorter using Computational Fluid Dynamics
Understanding Fluid Flow in a Microfluidic Cell Sorter using Computational Fluid Dynamics Open
Cell sorters have been a key tool in several ground-breaking medical discoveries. Their ability to sort based on different parameters simultaneously has made them valuable tools used to study the Immune System, cancers, and other complex b…
View article: HVAC Loads in High-Performance Homes (Presentation)
HVAC Loads in High-Performance Homes (Presentation) Open
This presentation was delivered at the ASHRAE 2010 Annual Summer Conference on June 27, 2010, and addresses humidity and AC loads in energy efficient houses.
View article: Ducts in the Attic? What Were They Thinking? Preprint
Ducts in the Attic? What Were They Thinking? Preprint Open
As energy-efficiency efforts focus increasingly on existing homes, we scratch our heads about construction decisions made 30, 40, 50-years ago and ask: 'What were they thinking?' A logical follow-on question is: 'What will folks think in 2…
View article: Total Thermal Management of Battery Electric Vehicles (BEVs)
Total Thermal Management of Battery Electric Vehicles (BEVs) Open
The key hurdles to achieving wide consumer acceptance of battery electric vehicles (BEVs) are weather-dependent drive range, higher cost, and limited battery life. These translate into a strong need to reduce a significant energy drain and…
View article: Evaluating EnergyPlus Airflow Network Model for Residential Ducts, Infiltration, and Interzonal Airflow
Evaluating EnergyPlus Airflow Network Model for Residential Ducts, Infiltration, and Interzonal Airflow Open
This presentation, given to the DOE Building Technologies Office, provides background on current BEopt approach, assessment approach, assessment results, and conclusions.
View article: EnergyPlus and SEEM Modeling Enhancements via Software-to-Software Comparison Using NREL's BEopt Test Suite
EnergyPlus and SEEM Modeling Enhancements via Software-to-Software Comparison Using NREL's BEopt Test Suite Open
This multiphase study involved comprehensive comparative testing of EnergyPlus and SEEM to determine the differences in energy consumption predictions between these two programs and to reconcile prioritized discrepancies through bug fixes,…
View article: Procedures for Calculating Residential Dehumidification Loads
Procedures for Calculating Residential Dehumidification Loads Open
Residential building codes and voluntary labeling programs are continually increasing the energy efficiency requirements of residential buildings. Improving a building's thermal enclosure and installing energy-efficient appliances and ligh…