U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications by: Piotr A. Domanski (Assoc)

Search Title, Abstract, Conference, Citation, Keyword or Author
Displaying 101 - 125 of 182

R-22 Replacement Status (In Spanish)

August 1, 2006
Author(s)
J M. Calm, Piotr A. Domanski
Since its initial recognition in 1928 and commercialization in 1936, R-22 has been applied in systems ranging from the smallest window air conditioners to the largest chillers and heat pumps, including those for district cooling and heating. Individual

An Improved Two-Phase Pressure Drop Correlation for 180 degrees Return Bends

May 1, 2006
Author(s)
Piotr A. Domanski, Christian Hermes
A new correlation for two-phase flow pressure drop in 180? return bends is proposed based on a total of 241 experimental data points for R-22 and R-410A. The data span smooth tubes with inner diameters (D) from 3.25 mm to 11.63 mm, bend radiuses (R) from 6

R-22 Replacement Status (in Italian)

February 1, 2006
Author(s)
J M. Calm, Piotr A. Domanski
Since its initial recognition in 1928 and commercialization in 1936, R-22 has been applied in systems ranging from the smallest window air conditioners to the largest chillers and heat pumps, including those for district cooling and heating. Individual

R-22 Replacement Status (in Polish)

August 1, 2005
Author(s)
J M. Calm, Piotr A. Domanski
Since its initial recognition in 1928 and commercialization in 1936, R-22 has been applied in systems ranging from the smallest window air conditioners to the largest chillers and heat pumps, including those for district cooling and heating. Individual

Mass Flow Rate of R-410A Through Short Tubes Working Near the Critical Point

June 1, 2005
Author(s)
Y Kim, William V. Payne, John Choi, Piotr A. Domanski
Experimental data were taken to examine R-410A mass flow rate characteristics through short tube restrictors at upstream pressures approaching the critical point. Four short tube restrictors were tested by varying upstream pressure from 2619 kPa to 4551

A Curve-Based Mixed System Rating Method

May 5, 2005
Author(s)
Piotr A. Domanski, William V. Payne
The curve-based method was evaluated based on performance predictions for nine mixed systems, which were also tested by an independent testing laboratory. Capacity predictions were within 5% of the tested values for six of nine mixed systems, and four of

A Curve-Based Mixed System Rating Method for Unitary Air Conditioners

May 2, 2005
Author(s)
William V. Payne, Piotr A. Domanski
The curve-based method was evaluated based on performance predictions for nine mixed systems, which were also tested by an independent testing laboratory. Capacity predictions were within 5% of the tested values for six of nine mixed systems, and four of

R-22 Replacement Status (in Portuguese) Part 1 and Part 2

March 1, 2005
Author(s)
J M. Calm, Piotr A. Domanski
Since its initial recognition in 1928 and commercialization in 1936, R-22 has been applied in systems ranging from the smallest window air conditioners to the largest chillers and heat pumps, including those for district cooling and heating. Individual

MEMS Sensors for HVAC&R: Small, Fast, Cheap.

December 1, 2004
Author(s)
David A. Yashar, Piotr A. Domanski
Microelectronic mechanical systems (MEMS) have revolutionized the market for sensors by providing small, fast-responding measurement devices at lowcost. They have been widely accepted in several commonproducts. As an example, today’s automobile uses

R-22 Replacement Status

November 1, 2004
Author(s)
J M. Calm, Piotr A. Domanski
Since its initial recognition in 1928 and commercialization in 1936, R-22 has been applied in systems ranging from the smallest window air conditioners to the largest chillers and heat pumps, including those for district cooling and heating. Individual

R-22 Replacement Status (in Chinese)

September 17, 2004
Author(s)
J M. Calm, Piotr A. Domanski
Since its initial recognition in 1928 and commercialization in 1936, R-22 has been applied in systems ranging from the smallest window air conditioners to the largest chillers and heat pumps, including those for district cooling and heating. Individual

R-22 Replacement Status

August 1, 2004
Author(s)
J M. Calm, Piotr A. Domanski
The next step in the transition to environmentally safer refrigerants is phase out of R-22. It is the most widely used refrigerant, both in the United States and on a global basis. Its application range in residential, commercial, industrial, and transport