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You searched on: Author: Piotr Domanski

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1. Sensitivity Analysis of Installation Faults on Heat Pump Performance
Series: Technical Note (NIST TN)
Report Number: 1848
Published: 10/8/2014
Authors: Piotr A Domanski, Hugh Henderson, William V Payne
Abstract: 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 eq ...

2. An Experimental and Computational Study of Approach Air Distribution for Slanted and A-Shaped Finned-Tube Heat Exchangers
Published: 7/1/2014
Authors: David A Yashar, Piotr A Domanski, Hong Hyun Cho
Abstract: 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 styl ...

3. Normalized Performance Parameters for a Residential Heat Pump in the Cooling Mode with Single Faults Imposed
Published: 3/3/2014
Authors: William V Payne, Jin Min Cho, Piotr A Domanski
Abstract: 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 ...

4. A Thermodynamic Analysis of Refrigerants: Possibilities and Tradeoffs for Low-GWP Refrigerants
Published: 2/26/2014
Authors: Mark O McLinden, Andrei F Kazakov, J S Brown, Piotr A Domanski
Abstract: 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, flammabili ...

5. Review of alternative cooling technologies
Published: 12/18/2013
Authors: S J Brown, Piotr A Domanski
Abstract: 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 th ...

Published: 10/24/2013
Authors: Piotr A Domanski, J S Brown, Janusz Wojtusiak, Mark O McLinden
Abstract: 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 parameter ...

7. Application of a Linear Fit Rating Method for Mixed Single-Speed Unitary Air Conditioners
Published: 1/28/2013
Authors: William V Payne, Piotr A Domanski
Abstract: 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 comple ...

8. Performance Improvement of a Roof Top Air-Conditioning Unit by Refrigerant Circuitry Optimization
Published: 1/26/2013
Authors: Sunil Lee, David A Yashar, Piotr A Domanski
Abstract: 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 wit ...

9. FDD CX: A Fault Detection and Diagnostic Commissioning Tool for Residential Air Conditioners and Heat Pumps
Series: Technical Note (NIST TN)
Report Number: 1774
Published: 11/21/2012
Authors: William V Payne, Jae Hyeok Heo, Piotr A Domanski
Abstract: 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 ref ...

10. A Dual Mode Evolutionary Algorithm Approach for Designing Optimized Finned-Tube Heat Exchangers
Published: 9/27/2012
Authors: David A Yashar, Piotr A Domanski, Janusz Wojusiak, Kenneth Kaufman
Abstract: 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 th ...

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