[HTML][HTML] Experimental investigation into the influence of different system configurations on charge optimization in an R410A chiller with a dedicated subcooler

ST Inampudi, S Elbel - Applied Thermal Engineering, 2024 - Elsevier
The current study addresses the important issue of reducing the amount of refrigerant used
in HVAC&R systems due to new regulations and the phase-down of high Global Warming …

[HTML][HTML] Seasonal performance assessment and experimental investigation of R32 drop-in and BPHX size in an R410A chiller when using two compressor modulation …

ST Inampudi, S Elbel - International Journal of Refrigeration, 2024 - Elsevier
The decrease in fossil fuel reserves and high energy consumption by HVAC&R equipment
require the use of compressors with better efficiencies and capacity modulation strategies …

Measurements of Oil Circulation Rate using Flow-through and Evacuated Type Sampling Cylinders for an Automotive Air Conditioning System

SA Haider, X Wang, S Elbel - SAE International Journal of Advances and …, 2023 - sae.org
In automotive air conditioning systems, the oil circulation rate (OCR) is known to affect
performance at both the component and system levels. The OCR is the ratio of the mass of …

Study of Flashing Flows Entering Evacuated Sampling Cylinders for Oil Circulation Rate Measurement in an Automotive Air Conditioning System

SA Haider, X Wang, S Elbel - 2023 - sae.org
The oil circulation rate (OCR) is a deciding factor for the performance of automotive air
conditioning systems at both the system and component levels. OCR is defined as the …

Experimental Comparison into the Effect of Oversized Heat Exchangers on Seasonal Performance Improvements of a Two-Stage and a Variable Speed Compressor …

ST Inampudi, S Elbel - International Conference on Compressors and their …, 2023 - Springer
There is an increased focus on improving the seasonal performance (SEER, IPLV. SI) of
HVAC&R systems. Many studies suggest enhancing the efficiency and capacity modulation …

[PDF][PDF] Estimation of Oil Circulation Ratio in a Vapor Compression System using a Discharge Side Oil Separator

SA Haider, C Seeton, N Miljkovic, S Elbel - 2024 - docs.lib.purdue.edu
For vapor compression systems, the standard method for measuring the oil circulation ratio
(OCR) is via sampling, as described in the ASHRAE standard 41.4. Sampling is tedious …

[PDF][PDF] Modeling of Flashing Flows at Evacuated Sampling Cylinder Entrance during Oil Circulation Ratio Measurements for a Vapor Compression System

SA Haider, N Miljkovic, S Elbel - 2024 - docs.lib.purdue.edu
The oil circulation ratio (OCR) significantly impacts automotive air conditioning system
performance, both at system and component levels. It represents the mass percentage of oil …

Commissioning of experimental facility for oil circulation rate measurements in a vapor compression system

SA Haider - 2023 - ideals.illinois.edu
Lubricant oil is essential in typical vapor compression refrigeration and air conditioning
systems, where the oil is primarily used to lubricate the moving parts inside the compressor …