Role of LNG in an optimized hybrid energy network, Part 1 : Balancing renewable energy supply and demand by integration of decentralized LNG regasifcation with a CHP

J. Montoya Cardona, J.A.M. Dam, M. de Rooij

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

Abstract

The future energy system could benefit from the integration of independent gas, heat and electricity infrastructures. Such a hybrid energy network could support the increase of intermittent renewable energy sources by offering increased operational flexibility. Nowadays, the expectations on Natural Gas resources forecast an increase in the application of Liquefied Natural Gas (LNG), as a means of storage and transportation, which has a high exergy value. Therefore, we analyzed the integration of decentralized LNG regasification with a Waste-to-Energy (W2E) plant for a practice-based case to get an idea on how it might affect the balancing of supply and demand, under optimized exergy efficient conditions. We compared an independent system with an integrated system that consists of the use of the LNG cold to cool the condenser of the W2E plant, as well as the expansion of the regasified LNG in an expander, using a simplified deterministic model based on the energy hub concept. We use the hourly measured electricity and heat demand patterns for 200 households with 35% of the households producing electricity from PV according to a typical measured solar insolation pattern in The Netherlands. The results indicate that the integration affects the imbalance for electricity and heat compared to the independent system. If the electricity demand is met, both the total yearly heat shortage and heat excess are reduced for the integrated system. If the heat demand is met, the total yearly electricity shortage is also reduced (with 100 MWh). However, the total yearly electricity excess is then increased (with 300 MWh). We observed that these changes are solely due to the increase in exergy efficiencies for heat and electricity of the W2E Rankine cycle. The efficiency of the expander is too low to offer a significant contribution to the electricity demand. Therefore, future research should focus on the affect that can be obtained by to other means of integration (e.g. Organic Rankine Cycle and Stirling Cycle).
LanguageEnglish
Title of host publication2017 6th International Youth Conference on Energy, IYCE 2017
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Number of pages7
ISBN (Electronic)9781509064090
DOIs
StatePublished - 28 Aug 2017
Event6th International Youth Conference on Energy (IYCE 2017), 21-24 June 2017, Budapest, Hungary - Budapest, Hungary
Duration: 21 Jun 201724 Jun 2017
Conference number: 6
http://www.iyce-conf.org/

Conference

Conference6th International Youth Conference on Energy (IYCE 2017), 21-24 June 2017, Budapest, Hungary
Abbreviated title IYCE
CountryHungary
CityBudapest
Period21/06/1724/06/17
Internet address

Fingerprint

Liquefied natural gas
Electricity
Exergy
Rankine cycle
Stirling cycle
Incident solar radiation
Hot Temperature
Enthalpy
Natural gas
Gases

Keywords

  • Cold Recovery
  • Decentralized Energy Systems
  • Energy Hub
  • Exergy efficiency
  • Hybrid Networks
  • LNG
  • Operational flexibility
  • Waste To Energy

Cite this

Montoya Cardona, J., Dam, J. A. M., & de Rooij, M. (2017). Role of LNG in an optimized hybrid energy network, Part 1 : Balancing renewable energy supply and demand by integration of decentralized LNG regasifcation with a CHP. In 2017 6th International Youth Conference on Energy, IYCE 2017 [8003742] Piscataway: Institute of Electrical and Electronics Engineers. DOI: 10.1109/IYCE.2017.8003742
Montoya Cardona, J. ; Dam, J.A.M. ; de Rooij, M./ Role of LNG in an optimized hybrid energy network, Part 1 : Balancing renewable energy supply and demand by integration of decentralized LNG regasifcation with a CHP. 2017 6th International Youth Conference on Energy, IYCE 2017. Piscataway : Institute of Electrical and Electronics Engineers, 2017.
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abstract = "The future energy system could benefit from the integration of independent gas, heat and electricity infrastructures. Such a hybrid energy network could support the increase of intermittent renewable energy sources by offering increased operational flexibility. Nowadays, the expectations on Natural Gas resources forecast an increase in the application of Liquefied Natural Gas (LNG), as a means of storage and transportation, which has a high exergy value. Therefore, we analyzed the integration of decentralized LNG regasification with a Waste-to-Energy (W2E) plant for a practice-based case to get an idea on how it might affect the balancing of supply and demand, under optimized exergy efficient conditions. We compared an independent system with an integrated system that consists of the use of the LNG cold to cool the condenser of the W2E plant, as well as the expansion of the regasified LNG in an expander, using a simplified deterministic model based on the energy hub concept. We use the hourly measured electricity and heat demand patterns for 200 households with 35{\%} of the households producing electricity from PV according to a typical measured solar insolation pattern in The Netherlands. The results indicate that the integration affects the imbalance for electricity and heat compared to the independent system. If the electricity demand is met, both the total yearly heat shortage and heat excess are reduced for the integrated system. If the heat demand is met, the total yearly electricity shortage is also reduced (with 100 MWh). However, the total yearly electricity excess is then increased (with 300 MWh). We observed that these changes are solely due to the increase in exergy efficiencies for heat and electricity of the W2E Rankine cycle. The efficiency of the expander is too low to offer a significant contribution to the electricity demand. Therefore, future research should focus on the affect that can be obtained by to other means of integration (e.g. Organic Rankine Cycle and Stirling Cycle).",
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Montoya Cardona, J, Dam, JAM & de Rooij, M 2017, Role of LNG in an optimized hybrid energy network, Part 1 : Balancing renewable energy supply and demand by integration of decentralized LNG regasifcation with a CHP. in 2017 6th International Youth Conference on Energy, IYCE 2017., 8003742, Institute of Electrical and Electronics Engineers, Piscataway, 6th International Youth Conference on Energy (IYCE 2017), 21-24 June 2017, Budapest, Hungary, Budapest, Hungary, 21/06/17. DOI: 10.1109/IYCE.2017.8003742

Role of LNG in an optimized hybrid energy network, Part 1 : Balancing renewable energy supply and demand by integration of decentralized LNG regasifcation with a CHP. / Montoya Cardona, J.; Dam, J.A.M.; de Rooij, M.

2017 6th International Youth Conference on Energy, IYCE 2017. Piscataway : Institute of Electrical and Electronics Engineers, 2017. 8003742.

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

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Montoya Cardona J, Dam JAM, de Rooij M. Role of LNG in an optimized hybrid energy network, Part 1 : Balancing renewable energy supply and demand by integration of decentralized LNG regasifcation with a CHP. In 2017 6th International Youth Conference on Energy, IYCE 2017. Piscataway: Institute of Electrical and Electronics Engineers. 2017. 8003742. Available from, DOI: 10.1109/IYCE.2017.8003742