| Title: |
Impact of hydrogen blending policies on the energy efficiency, environmental and economics parameters of residential gas boilers |
| Authors: |
Vespasiano, Domiziana; Vespasiano, Flavia; Massulli, Axel Riccardo; Ciancio, Alessandro; Santoli, Livio de |
| Contributors: |
Vespasiano, Domiziana; Vespasiano, Flavia; Massulli, Axel Riccardo; Ciancio, Alessandro; Santoli, Livio De |
| Publisher Information: |
Institute of Physics |
| Publication Year: |
2024 |
| Collection: |
Sapienza Università di Roma: CINECA IRIS |
| Subject Terms: |
hydrogen; energy efficiency; domestic applications |
| Description: |
At present, gas-fired boilers are among the most common systems for heating residential buildings. The potential integration of hydrogen into the gas network is being considered as a viable option for decarbonising heating systems. This study investigates the impact of hydrogen injection into the network, focusing on how it affects boiler performance by analysing energy and environmental parameters with different hydrogen fractions. Specifically, the study examines the technical, economic and environmental consequences of using hydrogen-enriched natural gas (H2NG) blends in gas-fired boilers. Primary energy consumption and emissions were evaluated using H2NG blends with hydrogen fractions ranging from 0% to 25% by volume. In addition, the study evaluates the influence of the blend on the system operating costs and the LCOH (levelized cost of heat) in relation to the LCOH2 (levelized cost of hydrogen). An analysis was carried out to determine the effect of hydrogen on emissions to facilitate the calculation of the Carbon Abatement Cost (CAC) of using the blend. The results show that the incorporation of H2NG blends further reduces the EPnr, with a 30% hydrogen blend achieving a 12.05% reduction. CO2 emissions also decrease proportionally with increasing hydrogen content. Economically, LCOH increases with increasing hydrogen content, with a 30% blend increasing boiler costs by 4.93%. In conclusion, the integration of hydrogen into heating systems can significantly reduce both non-renewable energy consumption and CO2 emissions but requires an increase in costs for fuel purchase due to the different energy vector. |
| Document Type: |
conference object |
| Language: |
English |
| Relation: |
ispartofbook:Journal of Physics: Conference Series; 79th Conference of the Associazione Termotecnica Italiana, ATI 2024; volume:2893; issue:1; firstpage:1; lastpage:14; numberofpages:14; https://hdl.handle.net/11573/1749379 |
| DOI: |
10.1088/1742-6596/2893/1/012086 |
| Availability: |
https://hdl.handle.net/11573/1749379; https://doi.org/10.1088/1742-6596/2893/1/012086 |
| Rights: |
info:eu-repo/semantics/openAccess ; license:Creative commons ; license uri:http://creativecommons.org/licenses/by/4.0/ |
| Accession Number: |
edsbas.63DA8AE8 |
| Database: |
BASE |