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Search Publications by: Piotr A. Domanski (Assoc)

Displaying 101 - 125 of 361

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

FDD CX: A Fault Detection and Diagnostic Commissioning Tool for Residential Air Conditioners and Heat Pumps

November 21, 2012

Author(s)

William V. Payne, Jae H. Heo, Piotr A. Domanski

FDD CX is a commissioning tool for unitary, air-source, single-speed, vapor compression air conditioner (AC) or heat pump (HP) systems. This software tool can be utilized to commission the operation of residential ACs or HPs to ensure proper refrigerant

Possibilities, Limits, and Tradeoffs for Refrigerants in the Vapor Compression Cycle

October 29, 2012

Author(s)

Mark O. McLinden, Andrei F. Kazakov, J S. 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. In the first approach, we evaluate the effect of a refrigerants fundamental thermodynamic parameters on its

A Dual Mode Evolutionary Algorithm Approach for Designing Optimized Finned-Tube Heat Exchangers

September 27, 2012

Author(s)

David A. Yashar, Piotr A. Domanski, Janusz Wojusiak, Kenneth Kaufman

The efficiency of a vapor compression system is strongly influenced by the performance of the finned-tube heat exchangers it employs. Heat exchanger performance is strongly influenced by the refrigerant circuitry, i.e., the connection sequence of the tubes

A THERMODYNAMIC ANALYSIS OF REFRIGERANTS. I. THERMODYNAMIC LIMITS OF THE VAPOR COMPRESSION CYCLE

June 18, 2012

Author(s)

Piotr A. Domanski, J S. Brown, Jae H. Heo, 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 using

CYCLE_D: NIST Vapor Compression Cycle Design Program Version 5.0

May 1, 2012

Author(s)

J S. Brown, Piotr A. Domanski, Eric Lemmon

NIST Standard Reference Database 73 REFLEAK: NIST Leak/Recharge Simulation Model for Refrigerant Mixtures, Version 4.0

January 16, 2012

Author(s)

David Didion, MinSoo Kim, Piotr A. Domanski

EVAP-COND, Version 3

September 22, 2011

Author(s)

Piotr A. Domanski, David A. Yashar

Alternative Cooling Technology Options

August 21, 2011

Author(s)

J S. Brown, Piotr A. Domanski

This paper considers the alternative cooling technologies studied by Fisher et al. (1994) and assesses their current potential to compete with or to replace vapor compression refrigeration technology for space cooling and near-room temperature

Practical Aspects of Applying Evolutionary Algorithms for Optimizing Refrigerant Circuitry in Heat Exchangers

August 21, 2011

Author(s)

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

A public domain finned-tube heat exchanger simulation program, EVAP-COND ver. 3.0, has been equipped with an evolutionary algorithm-based module, called ISHED Intelligent System for Heat Exchanger Design, which facilitates optimization of refrigerant

IMPACT OF CLASSICAL ASSUMPTIONS IN MODELLING A MICROCHANNEL GAS COOLER

July 5, 2011

Author(s)

Santiago Martinez-Ballester, Jose M. Corberan, Jose Gonzalvez-Macia, Piotr A. Domanski

Most of the current air-to-refrigerant heat exchanger models use the classic ε-NTU approach. These models do not account for 2D longitudinal heat conduction in the tube and the longitudinal heat conduction in the fin. These models, also do not account for

IEA HPP Annex 36: Quality Installation / Quality Maintenance Sensitivity Analysis

June 27, 2011

Author(s)

Glenn Hourahan, Piotr A. Domanski, Van Baxter

The paper summarizes the goals and planned activities to be undertaken by the participants in Annex 36. Some background information and status of Annex work specific to each participant is provided as well.

Characterization of Approach Air Distribution for a Finned-Tube Heat Exchanger

February 18, 2011

Author(s)

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

The distribution of air flow approaching a finned-tube heat exchanger is one of the predominant factors influencing the heat exchangers performance. This paper describes a method for measuring and predicting the inlet air flow distribution using Particle