Efficiency and Capacity Performance of a Stirling-Cycle Water-to-Water Heat Pump

Stephen Kowalski, Rusty Jewett, Ahmad Abu-Heiba, Kyle Gluesenkamp, Kashif Nawaz

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The performance of a 10 kW (34,000 Btu/hr) heat pump has been modeled using Schmidt's method (Urieli, 1984). The method has been modified to account for losses due to pumping of the gas flow, thermal conduction, regenerator effectiveness, and irreversibility in the heat exchangers. The key outputs of the model were the heating and cooling efficiencies and the capacity of the device. These parameters were determined across a wide range of source temperatures (15 to 35°C [59 to 95°F]) and sink temperatures (45 to 90°C [113 to 194°F]). For these operating parameters, results indicate that the COP for heating rangese from 3.96 to 6.69. These preliminary modeling results present the Stirling cycle heat pump as an attractive tool for the decarbonization of residential, commercial, and industrial HVAC&R applications. However, the results of the modeling effort presented need to be validated experimentally. Experimental testing will be started soon.

Original languageEnglish
Title of host publication2022 ASHRAE Annual Conference
PublisherASHRAE
Pages590-596
Number of pages7
ISBN (Electronic)9781955516143
StatePublished - 2022
Event2022 ASHRAE Annual Conference - Hybrid, Toronto, Canada
Duration: Jun 25 2022Jun 29 2022

Publication series

NameASHRAE Transactions
Volume128
ISSN (Print)0001-2505

Conference

Conference2022 ASHRAE Annual Conference
Country/TerritoryCanada
CityHybrid, Toronto
Period06/25/2206/29/22

Funding

Notice: This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan).

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