High Temperature Air-Water Heat Pump and Energy Storage: Validation of TRNSYS Models

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This paper presents the validation of TRNSYS models for a high temperature air-water heat pump and a thermal energy storage based on field trial data. This validation aims at clarifying strengths and weaknesses of the models and verifying the model accuracy which can support further studies conducting advanced models related to HTAWHP-TES. Results show good agreements with field trial results for condenser water outlet temperatures and Coefficient of Performance of the validated model, with CV(RMSE) of 4.14% and 11.6% respectively. Discrepancies caused in start-up operation of the heat pump are the main disadvantage that the model cannot address and have been discussed. The storage model was validated in three modes: charge, discharge and standby. Very strong coincidences of tank node temperatures are observed between simulation and collected data in both charging and discharging mode. In standby mode, less than 2.5˚C difference is observed in top tank nodes, whereas bottom nodes are within 1˚C uncertainty. Stratification in standby loss has been discussed.
LanguageEnglish
Title of host publicationProceedings of the World Congress on Engineering and Computer Science 2017 Vol II WCECS 2017
Place of PublicationSan Francisco, USA
Number of pages6
VolumeII
Publication statusE-pub ahead of print - 2017

Fingerprint

Energy storage
Pumps
Air
Water
Temperature
Hot Temperature
Thermal energy

Keywords

  • TRNSYS
  • Heat pump
  • Energy storage

Cite this

Le, K., Shah, N., Huang, M., & Hewitt, N. (2017). High Temperature Air-Water Heat Pump and Energy Storage: Validation of TRNSYS Models. In Proceedings of the World Congress on Engineering and Computer Science 2017 Vol II WCECS 2017 (Vol. II). San Francisco, USA.
Le, Khoa ; Shah, Nikhilkumar ; Huang, M ; Hewitt, Neil. / High Temperature Air-Water Heat Pump and Energy Storage: Validation of TRNSYS Models. Proceedings of the World Congress on Engineering and Computer Science 2017 Vol II WCECS 2017. Vol. II San Francisco, USA, 2017.
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abstract = "This paper presents the validation of TRNSYS models for a high temperature air-water heat pump and a thermal energy storage based on field trial data. This validation aims at clarifying strengths and weaknesses of the models and verifying the model accuracy which can support further studies conducting advanced models related to HTAWHP-TES. Results show good agreements with field trial results for condenser water outlet temperatures and Coefficient of Performance of the validated model, with CV(RMSE) of 4.14{\%} and 11.6{\%} respectively. Discrepancies caused in start-up operation of the heat pump are the main disadvantage that the model cannot address and have been discussed. The storage model was validated in three modes: charge, discharge and standby. Very strong coincidences of tank node temperatures are observed between simulation and collected data in both charging and discharging mode. In standby mode, less than 2.5˚C difference is observed in top tank nodes, whereas bottom nodes are within 1˚C uncertainty. Stratification in standby loss has been discussed.",
keywords = "TRNSYS, Heat pump, Energy storage",
author = "Khoa Le and Nikhilkumar Shah and M Huang and Neil Hewitt",
year = "2017",
language = "English",
isbn = "978-988-14048-4-8",
volume = "II",
booktitle = "Proceedings of the World Congress on Engineering and Computer Science 2017 Vol II WCECS 2017",

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Le, K, Shah, N, Huang, M & Hewitt, N 2017, High Temperature Air-Water Heat Pump and Energy Storage: Validation of TRNSYS Models. in Proceedings of the World Congress on Engineering and Computer Science 2017 Vol II WCECS 2017. vol. II, San Francisco, USA.

High Temperature Air-Water Heat Pump and Energy Storage: Validation of TRNSYS Models. / Le, Khoa; Shah, Nikhilkumar; Huang, M; Hewitt, Neil.

Proceedings of the World Congress on Engineering and Computer Science 2017 Vol II WCECS 2017. Vol. II San Francisco, USA, 2017.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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T1 - High Temperature Air-Water Heat Pump and Energy Storage: Validation of TRNSYS Models

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AU - Hewitt, Neil

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N2 - This paper presents the validation of TRNSYS models for a high temperature air-water heat pump and a thermal energy storage based on field trial data. This validation aims at clarifying strengths and weaknesses of the models and verifying the model accuracy which can support further studies conducting advanced models related to HTAWHP-TES. Results show good agreements with field trial results for condenser water outlet temperatures and Coefficient of Performance of the validated model, with CV(RMSE) of 4.14% and 11.6% respectively. Discrepancies caused in start-up operation of the heat pump are the main disadvantage that the model cannot address and have been discussed. The storage model was validated in three modes: charge, discharge and standby. Very strong coincidences of tank node temperatures are observed between simulation and collected data in both charging and discharging mode. In standby mode, less than 2.5˚C difference is observed in top tank nodes, whereas bottom nodes are within 1˚C uncertainty. Stratification in standby loss has been discussed.

AB - This paper presents the validation of TRNSYS models for a high temperature air-water heat pump and a thermal energy storage based on field trial data. This validation aims at clarifying strengths and weaknesses of the models and verifying the model accuracy which can support further studies conducting advanced models related to HTAWHP-TES. Results show good agreements with field trial results for condenser water outlet temperatures and Coefficient of Performance of the validated model, with CV(RMSE) of 4.14% and 11.6% respectively. Discrepancies caused in start-up operation of the heat pump are the main disadvantage that the model cannot address and have been discussed. The storage model was validated in three modes: charge, discharge and standby. Very strong coincidences of tank node temperatures are observed between simulation and collected data in both charging and discharging mode. In standby mode, less than 2.5˚C difference is observed in top tank nodes, whereas bottom nodes are within 1˚C uncertainty. Stratification in standby loss has been discussed.

KW - TRNSYS

KW - Heat pump

KW - Energy storage

M3 - Conference contribution

SN - 978-988-14048-4-8

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BT - Proceedings of the World Congress on Engineering and Computer Science 2017 Vol II WCECS 2017

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Le K, Shah N, Huang M, Hewitt N. High Temperature Air-Water Heat Pump and Energy Storage: Validation of TRNSYS Models. In Proceedings of the World Congress on Engineering and Computer Science 2017 Vol II WCECS 2017. Vol. II. San Francisco, USA. 2017