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Search Publications by: Piotr A. Domanski (Assoc)

Displaying 76 - 100 of 361

An Experimental and Computational Study of Approach Air Distribution for Slanted and A-Shaped Finned-Tube Heat Exchangers

January 25, 2015

Author(s)

David A. Yashar, Piotr A. Domanski, Hong Hyun Cho

Effect of Installation Faults on Air-to-Air Heat Pump Performance

January 20, 2015

Author(s)

Piotr A. Domanski

Numerous studies and surveys indicate that typically-installed HVAC equipment operate inefficiently and waste considerable energy due to different installation errors (faults) such as improper refrigerant charge, incorrect airflow, oversized equipment

Sensitivity Analysis of Installation Faults on Heat Pump Performance

October 8, 2014

Author(s)

Piotr A. Domanski, Hugh Henderson, William V. Payne

Numerous studies and surveys indicated that typically-installed HVAC equipment operates inefficiently and wastes considerable energy due to different installation errors (faults), e.g., improper refrigerant charge, incorrect airflow, oversized equipment

An Experimental and Computational Study of Approach Air Distribution for Slanted and A-Shaped Finned-Tube Heat Exchangers

July 1, 2014

Author(s)

David A. Yashar, Piotr A. Domanski, Hong Hyun Cho

One of the most influential factors of the performance of a finned tube heat exchanger is the distribution of the air passing through it; therefore it must be known in order to produce a highly efficient design. We examined two different common style air

Normalized Performance Parameters for a Residential Heat Pump in the Cooling Mode with Single Faults Imposed

March 3, 2014

Author(s)

William V. Payne, Jin M. Cho, Piotr A. Domanski

The performance of a residential split heat pump in the cooling mode operating under nine faults was described using normalized performance parameters determined from a ratio of the faulty value to the no-fault value obtained from heat pump tests in

A Thermodynamic Analysis of Refrigerants: Possibilities and Tradeoffs for Low-GWP Refrigerants

February 26, 2014

Author(s)

Mark O. McLinden, Andrei F. Kazakov, J S. Brown, Piotr A. Domanski

We explore the possibilities for refrigerants having low global warming potential (GWP). A set of about 1200 candidate fluids is identified from more than 56 000 small molecules examaned by applying screening criteria to estimates for GWP, flammability

Thermodynamic Performance Limits of the Vapor Compression Cycle

January 19, 2014

Author(s)

Piotr A. Domanski, J S. Brown, Jae H. Heo, Mark O. McLinden

This presentation discusses the thermodynamic performance limits of the vapor compression cycle. We have applied evolutionary algorithms to explore the performance of hypothetical refrigerants defined by the thermodynamic parameters used by the extended

Review of alternative cooling technologies

December 18, 2013

Author(s)

S J. Brown, Piotr A. Domanski

This paper considers the alternative cooling technologies studied by Fisher et al. (1994) and assesses their current performance and market potential in reference to vapor compression technology. First, a taxonomy of cooling technologies based on the main

A thermodynamic analysis of refrigerants: Possibilities and tradeoffs for Low-GWP refrigerants

October 26, 2013

Author(s)

Mark O. McLinden, Andrei F. Kazakov, J. Steven Brown, Piotr A. Domanski, Jae H. Heo

We explore the possibilities for refrigerants having low global warming potential (GWP) using two distinct, but complimentary, approaches. We evaluate the effect of a refrigerant's fundamental thermodynamic parameters on its performance in the simple vapor

A THERMODYNAMIC ANALYSIS OF REFRIGERANTS: PERFORMANCE LIMITS OF THE VAPOR COMPRESSION CYCLE

October 24, 2013

Author(s)

Piotr A. Domanski, J S. Brown, Janusz Wojtusiak, Mark O. McLinden

This paper explores the thermodynamic performance limits of the vapor compression cycle. In particular, we apply evolutionary algorithms to explore the performance of thousands of hypothetical refrigerants defined by their thermodynamic parameters used by

A Thermodynamic Analysis of Refrigerants. II. Possibilities and Tradeoffs for Low-GWP Refrigerants

June 17, 2013

Author(s)

Mark O. McLinden, Andrei F. Kazakov, J. Steven Brown, Piotr A. Domanski

We explore the possibilities for refrigerants having low global warming potential (GWP) by use of two distinct approaches. In a companion paper (Domanski et al., 2013) we evaluate the effect of a refrigerants fundamental thermodynamic parameters on its

Application of a Linear Fit Rating Method for Mixed Single-Speed Unitary Air Conditioners

January 28, 2013

Author(s)

William V. Payne, Piotr A. Domanski

A method employing the simultaneous solution of two linear fits is used to determine the rated cooling capacity and seasonal energy efficiency ratio, SEER, of outdoor unit and indoor unit air-conditioner combinations not previously tested as a complete

Performance Improvement of a Roof Top Air-Conditioning Unit by Refrigerant Circuitry Optimization

January 26, 2013

Author(s)

Sunil Lee, David A. Yashar, Piotr A. Domanski

In this experiment-aided simulation study, we achieved the performance improvement of a Roof Top Unit (RTU) by optimizing an evaporator's refrigerant circuitry using evolutionary algorithms. The system used in this study was a 2-stage 7.5 Ton RTU with an