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Author: piotr domanski

Displaying records 31 to 40 of 126 records.
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31. Design of a steady-state detector for fault detection and diagnosis of a residential air conditioner
Published: 5/1/2008
Authors: Minsung Kim, Seok H. Yoon, Piotr A Domanski, William V Payne
Abstract: This paper presents a general methodology for developing a steady-state detector for a vapor compression system based on a moving window and using standard deviations of seven measurements selected as features. The feature thresholds and optimized ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861614

32. Condensadores de Tubo con Aletas Optimizacion Mediante Sistema Inteligente
Published: 2/1/2008
Authors: Piotr A Domanski, David A Yashar
Abstract: The refrigerant circuitry influences a heat exchanger's attainable capacity. Typically, a design engineer specifies a circuitry and validates it using a simulation model or laboratory test. The circuitry optimization process can be improved by using ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861500

33. Application of an Evolution Program for Refrigerant Circuitry Optimization
Published: 12/7/2007
Authors: Piotr A Domanski, David A Yashar
Abstract: Increased concerns about climate change have emphasized the importance of air-conditioning and refrigeration systems with a high coefficient of performance (COP). The effectiveness of heat exchangers significantly influences the vapor-compression sy ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861585

34. REFLEAK: NIST Leak/Recharge Simulation Program for Refrigerant Mixtures. Version 3.1. User's Guide.
Series: Natl Std. Ref. Data Series (NIST NSRDS)
Report Number: 73
Published: 11/1/2007
Authors: Piotr A Domanski, David Didion, Min S. Kim
Abstract: REFLEAK estimates composition changes of zeotropic mixtures in leak and recharge processes. The leak/recharge simulation program consists of three parts: 1) the pre-processing section for inputting required data, 2) the computation section which simu ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861502

35. A Microfabricated Flow Controller for Refrigerant Expansion
Published: 10/1/2007
Authors: David A Yashar, Piotr A Domanski, Don DeVoe
Abstract: A flow controller for refrigerant expansion is reported. Devices are fabricated using a micromolding technique developed for thick nickel electroplating. The device consists of a short tube restrictor with an integrated normally-open valve which, w ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861029

36. Longitudinal Heat Conduction in Finned-Tube Evaporators
Published: 8/21/2007
Authors: Piotr A Domanski, William V Payne, J M Choi
Abstract: The paper evaluates performance of finned-tube evaporators at different refrigerant exit superheats to assess the impact of longitudinal heat conduction on capacity.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861658

37. Experimental Transient Performance of a Heat Pump Equipped With a Distillation Column
Published: 5/1/2007
Authors: J G Gebbie, M K Jensen, Piotr A Domanski
Abstract: A series of experiments was conducted on a heat pump equipped with a distillation column. The system was operated with R32 and with a 30/70 % by mass mixture of R32/134a to examine the difference between the transient performance trends with a pure ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860977

38. Optimization of Finned-Tube Condensers Using an Intelligent System
Published: 5/1/2007
Authors: Piotr A Domanski, David A Yashar
Abstract: The refrigerant circuitry influences a heat exchanger s attainable capacity. Typically, a design engineer specifies a circuitry and validates it using a simulation model or laboratory test. The circuitry optimization process can be improved by usin ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860988

39. Linear-Fit-Based Rating Procedure for Mixed Air-Source Unitary Air Conditioners and Heat Pumps Operating in the Cooling Mode.
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7325
Published: 12/7/2006
Authors: William V Payne, Piotr A Domanski
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101078

40. An Improved Correlation for Two-Phase Pressure Drop of R-22 and R-410A in 180 Return Bends
Published: 12/5/2006
Authors: Piotr A Domanski, Christian Hermes
Abstract: 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 from two independent studies. The data span smooth tubes with inner diameters (D) from 3.3 mm to ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861021