Eco-friendly, energy- and cost-efficient A/C system with heat pump functionality using R744 for rail applications

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

Abstract

Within the national Austrian R&D project ”eco2jet” an environmentally friendly A/C system with heat pump functionality is being investigated. The system will be evaluated on a test rig as well as in regular operation in a train of the national railway operator (Austrian Federal Railways – ÖBB). The use of the natural refrigerant R744 (CO2 – carbon dioxide) means a future-oriented technology for railway applications because of its negligible 퐺푊푃 and favourable thermodynamic properties for heat pump applications. Compared to conventional A/C systems, the eco2jet A/C system increases the energy efficiency significantly. The primary objective is to meet the comfort criteria of the passengers in a wide operating range with low environmental impact by using novel heat exchangers, an advanced system architecture and intelligent control strategy in the future. Furthermore, predictive maintenance strategies shall help to reduce the operating and maintenance costs. The manuscript describes the system design, first test rig measurements and simulation results of the eco2jet A/C system with heat pump functionality. First test rig measurements have shown, that the eco2jet system supplies at an ambient temperature of 35 °C (design point DP 1) a cooling capacity of 18.0 kW at a 퐶푂푃cooling of 1.68. In heat pump mode (-10 °C ambient temperature, design point DP 2.1), the heating capacity is 8.9 kW with a 퐶푂푃heating of 2.72.
Original languageEnglish
Title of host publication8th Conference on Ammonia and CO2 Refrigeration Technologies, Ohrid 2019 - Proceedings
Place of PublicationOhrid
ChapterCO2 Refrigeration
Pages249 - 256
Number of pages8
ISBN (Electronic)978-2-36215-034-0
DOIs
Publication statusPublished - 11 Apr 2019
Event8th Conference on Ammonia and CO2 Refrigeration Technologies - Ohrid, Macedonia, The Former Yugoslav Republic of
Duration: 11 Apr 201913 Apr 2019

Conference

Conference8th Conference on Ammonia and CO2 Refrigeration Technologies
CountryMacedonia, The Former Yugoslav Republic of
CityOhrid
Period11/04/1913/04/19

Fingerprint

heat pumps
rails
Rails
Pumps
costs
ambient temperature
maintenance
Costs
Cooling
cooling
Heating
operating costs
heating
passengers
comfort
energy
refrigerants
Intelligent control
Refrigerants
heat exchangers

Keywords

  • COP
  • Heat pump
  • HVAC
  • R744 (CO2-carbon dioxide)
  • Rail applications
  • Simulation
  • Test rig

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Electrical and Electronic Engineering
  • Control and Systems Engineering

Cite this

Schrank, P., Rauch, A., Presetschnik, A., & Rieberer, R. (2019). Eco-friendly, energy- and cost-efficient A/C system with heat pump functionality using R744 for rail applications. In 8th Conference on Ammonia and CO2 Refrigeration Technologies, Ohrid 2019 - Proceedings (pp. 249 - 256). Ohrid. https://doi.org/10.18462/iir.nh3-co2.2019.0034

Eco-friendly, energy- and cost-efficient A/C system with heat pump functionality using R744 for rail applications. / Schrank, Peter; Rauch, Alexander; Presetschnik, Andreas; Rieberer, René.

8th Conference on Ammonia and CO2 Refrigeration Technologies, Ohrid 2019 - Proceedings. Ohrid, 2019. p. 249 - 256.

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

Schrank, P, Rauch, A, Presetschnik, A & Rieberer, R 2019, Eco-friendly, energy- and cost-efficient A/C system with heat pump functionality using R744 for rail applications. in 8th Conference on Ammonia and CO2 Refrigeration Technologies, Ohrid 2019 - Proceedings. Ohrid, pp. 249 - 256, 8th Conference on Ammonia and CO2 Refrigeration Technologies, Ohrid, Macedonia, The Former Yugoslav Republic of, 11/04/19. https://doi.org/10.18462/iir.nh3-co2.2019.0034
Schrank P, Rauch A, Presetschnik A, Rieberer R. Eco-friendly, energy- and cost-efficient A/C system with heat pump functionality using R744 for rail applications. In 8th Conference on Ammonia and CO2 Refrigeration Technologies, Ohrid 2019 - Proceedings. Ohrid. 2019. p. 249 - 256 https://doi.org/10.18462/iir.nh3-co2.2019.0034
Schrank, Peter ; Rauch, Alexander ; Presetschnik, Andreas ; Rieberer, René. / Eco-friendly, energy- and cost-efficient A/C system with heat pump functionality using R744 for rail applications. 8th Conference on Ammonia and CO2 Refrigeration Technologies, Ohrid 2019 - Proceedings. Ohrid, 2019. pp. 249 - 256
@inproceedings{2309d0e176774f17a97d49e54dd56734,
title = "Eco-friendly, energy- and cost-efficient A/C system with heat pump functionality using R744 for rail applications",
abstract = "Within the national Austrian R&D project ”eco2jet” an environmentally friendly A/C system with heat pump functionality is being investigated. The system will be evaluated on a test rig as well as in regular operation in a train of the national railway operator (Austrian Federal Railways – {\"O}BB). The use of the natural refrigerant R744 (CO2 – carbon dioxide) means a future-oriented technology for railway applications because of its negligible 퐺푊푃 and favourable thermodynamic properties for heat pump applications. Compared to conventional A/C systems, the eco2jet A/C system increases the energy efficiency significantly. The primary objective is to meet the comfort criteria of the passengers in a wide operating range with low environmental impact by using novel heat exchangers, an advanced system architecture and intelligent control strategy in the future. Furthermore, predictive maintenance strategies shall help to reduce the operating and maintenance costs. The manuscript describes the system design, first test rig measurements and simulation results of the eco2jet A/C system with heat pump functionality. First test rig measurements have shown, that the eco2jet system supplies at an ambient temperature of 35 °C (design point DP 1) a cooling capacity of 18.0 kW at a 퐶푂푃cooling of 1.68. In heat pump mode (-10 °C ambient temperature, design point DP 2.1), the heating capacity is 8.9 kW with a 퐶푂푃heating of 2.72.",
keywords = "COP, Heat pump, HVAC, R744 (CO2-carbon dioxide), Rail applications, Simulation, Test rig",
author = "Peter Schrank and Alexander Rauch and Andreas Presetschnik and Ren{\'e} Rieberer",
year = "2019",
month = "4",
day = "11",
doi = "10.18462/iir.nh3-co2.2019.0034",
language = "English",
isbn = "978-2-36215-034-0",
pages = "249 -- 256",
booktitle = "8th Conference on Ammonia and CO2 Refrigeration Technologies, Ohrid 2019 - Proceedings",

}

TY - GEN

T1 - Eco-friendly, energy- and cost-efficient A/C system with heat pump functionality using R744 for rail applications

AU - Schrank, Peter

AU - Rauch, Alexander

AU - Presetschnik, Andreas

AU - Rieberer, René

PY - 2019/4/11

Y1 - 2019/4/11

N2 - Within the national Austrian R&D project ”eco2jet” an environmentally friendly A/C system with heat pump functionality is being investigated. The system will be evaluated on a test rig as well as in regular operation in a train of the national railway operator (Austrian Federal Railways – ÖBB). The use of the natural refrigerant R744 (CO2 – carbon dioxide) means a future-oriented technology for railway applications because of its negligible 퐺푊푃 and favourable thermodynamic properties for heat pump applications. Compared to conventional A/C systems, the eco2jet A/C system increases the energy efficiency significantly. The primary objective is to meet the comfort criteria of the passengers in a wide operating range with low environmental impact by using novel heat exchangers, an advanced system architecture and intelligent control strategy in the future. Furthermore, predictive maintenance strategies shall help to reduce the operating and maintenance costs. The manuscript describes the system design, first test rig measurements and simulation results of the eco2jet A/C system with heat pump functionality. First test rig measurements have shown, that the eco2jet system supplies at an ambient temperature of 35 °C (design point DP 1) a cooling capacity of 18.0 kW at a 퐶푂푃cooling of 1.68. In heat pump mode (-10 °C ambient temperature, design point DP 2.1), the heating capacity is 8.9 kW with a 퐶푂푃heating of 2.72.

AB - Within the national Austrian R&D project ”eco2jet” an environmentally friendly A/C system with heat pump functionality is being investigated. The system will be evaluated on a test rig as well as in regular operation in a train of the national railway operator (Austrian Federal Railways – ÖBB). The use of the natural refrigerant R744 (CO2 – carbon dioxide) means a future-oriented technology for railway applications because of its negligible 퐺푊푃 and favourable thermodynamic properties for heat pump applications. Compared to conventional A/C systems, the eco2jet A/C system increases the energy efficiency significantly. The primary objective is to meet the comfort criteria of the passengers in a wide operating range with low environmental impact by using novel heat exchangers, an advanced system architecture and intelligent control strategy in the future. Furthermore, predictive maintenance strategies shall help to reduce the operating and maintenance costs. The manuscript describes the system design, first test rig measurements and simulation results of the eco2jet A/C system with heat pump functionality. First test rig measurements have shown, that the eco2jet system supplies at an ambient temperature of 35 °C (design point DP 1) a cooling capacity of 18.0 kW at a 퐶푂푃cooling of 1.68. In heat pump mode (-10 °C ambient temperature, design point DP 2.1), the heating capacity is 8.9 kW with a 퐶푂푃heating of 2.72.

KW - COP

KW - Heat pump

KW - HVAC

KW - R744 (CO2-carbon dioxide)

KW - Rail applications

KW - Simulation

KW - Test rig

UR - http://www.scopus.com/inward/record.url?scp=85065516456&partnerID=8YFLogxK

U2 - 10.18462/iir.nh3-co2.2019.0034

DO - 10.18462/iir.nh3-co2.2019.0034

M3 - Conference contribution

SN - 978-2-36215-034-0

SP - 249

EP - 256

BT - 8th Conference on Ammonia and CO2 Refrigeration Technologies, Ohrid 2019 - Proceedings

CY - Ohrid

ER -