Energy consumption modeling of air source electric heat pump water heaters

Bourke, Grant; Bansal, Pradeep

doi:10.1016/j.applthermaleng.2010.04.008

Cited by 36 publications

(11 citation statements)

References 1 publication

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“…The draw therefore delivers more energy than is consumed. This phenomena demonstrates the importance of the water flow use schedule on the measured energy consumption of the water heater which has previously been shown to be of importance for both GTWHs [29,[56][57][58] and other water heating technologies [59].…”

Section: Laboratory Test Resultsmentioning

confidence: 91%

Performance of gas tankless (instantaneous) water heaters under various international standards

2014

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Section: Laboratory Test Resultsmentioning

confidence: 91%

Performance of gas tankless (instantaneous) water heaters under various international standards

2014

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“…The use of heat pump (HP) for water heating is a relatively new addition to this series for producing hot water from electricity at reasonable high efficiency. 4,5 Air source heat pump water heater (ASHPWH) is a mechanical system driven by electrical energy, extracts heat from the surrounding air (indoor or outdoor depending on the location of the system), and transfers it to the water in the integrated tank. Hepbasli and Kalinci 6 have published a review on the extent of applications of HP water heating systems in residential and commercial buildings.…”

Section: Introductionmentioning

confidence: 99%

Performance characterization of an indoor air source heat pump water heater for residential applications in Canada

2017

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Summary Air source heat pump water heater (ASHPWH) is a relatively new addition to delivering hot water at reasonably high efficiency. ASHPWH systems have achieved significant acceptance for mild to warm climate regions where space heating is minimal or none. However, limited performance mapping is available on these water heaters in extreme cold climatic conditions, such as Canada. The paper has examined the long‐term performance of this technology in Canadian context. The investigation has established the performance characteristics of ASHPWH unit through a series of pre‐defined indoor tests and theoretical simulations. The coefficient of performance and other critical parameters of ASHPWH were established and discussed in detail. A model was developed, validated, and used to show the impact of such type of water heater on the overall energy consumption in the house. The results indicate that the summer cooling decreases and the winter heating increases in the house with an indoor ASHPWH unit. Nevertheless, the net effect leads to 21.3% reduction in the total electricity consumption of the house (space heating, cooling, and water heating). Research provided an accurate performance prediction of ASHPWHs for year‐round applications in Canadian homes.

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“…Modelling a heat pump is generally divided into two categories: polynomial fits and semi-empirical. In the first category, the correlations are fitted to experimental data as the models presented in [2][3][4]. The semi empirical approach, for instance the model used in the papers [5][6][7], is based on thermodynamic evolutions of the working fluid through the components of the heat pump.…”

Section: Motivationmentioning

confidence: 99%

Energy Efficiency Modelling of Residential Air Source Heat Pump Water Heater

Tran¹,

Rivière²,

Waide³

2016

J. sustain. dev. energy water environ. syst.

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The heat pump water heater is one of the most energy efficient technologies for heating water for household use. The present work proposes a simplified model of coefficient of performance and examines its predictive capability. The model is based on polynomial functions where the variables are temperatures and the coefficients are derived from the Australian standard test data, using regression technics. The model enables to estimate the coefficient of performance of the same heat pump water heater under other test standards (i.e. US, Japanese, European and Korean standards). The resulting estimations over a heat-up phase and a full test cycle including a draw off pattern are in close agreement with the measured data. Thus the model allows manufacturers to avoid the need to carry out physical tests for some standards and to reduce product cost. The limitations of the methodology proposed are also discussed.

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Energy consumption modeling of air source electric heat pump water heaters

Cited by 36 publications

References 1 publication

Performance of gas tankless (instantaneous) water heaters under various international standards

Performance of gas tankless (instantaneous) water heaters under various international standards

Performance characterization of an indoor air source heat pump water heater for residential applications in Canada

Energy Efficiency Modelling of Residential Air Source Heat Pump Water Heater

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