The first aim of the study was to present the methodology applied by the model WOody biomass and Carbon ASsessment to compute the past potentially available residues (RA; branches and tops only; t·yr−1 of dry matter, DM), potentially generated heat and electricity (TE, EE, respectively; GJ·yr−1) and potentially avoided CO2 emissions into the atmosphere (EM; t·yr−1 CO2) for the final combustion process. The available residues are computed at the forest stand level through a recovery rate based on six technical parameters. The methodology was applied to the public stands of Valle Camonica district (Italy) (total area: 3.67·104 ha; period: 1984–2016). The mass of residues calculated for that period was used to estimate the current supply, i.e. 2.15·103 ± 6.04·102 t·yr−1 DM. By assuming that this mass was used in an Organic Rankine Cycle (ORC) unit of a local centralized heating plant, TE = 2.06·104 ÷ 2.41·104 GJ·yr−1 and EE = 5.08·103 ÷ 5.95·103 GJ·yr−1. By assuming that: (i) heat generated by the ORC replaced heat produced by conventional natural gas-based plants; (ii) electricity generated by the ORC replaced electricity generated by Italian natural gas-based plants-mix (combined heat and electricity production) EM = 1.85·103 ÷ 2.17·103 t·yr−1 CO2.

Harvesting of wood for energy generation : a quantitative stand-level analysis in an Italian mountainous district / L. Nonini, M. Fiala. - In: SCANDINAVIAN JOURNAL OF FOREST RESEARCH. - ISSN 0282-7581. - 36:6(2021 Sep), pp. 474-490. [10.1080/02827581.2021.1966090]

Harvesting of wood for energy generation : a quantitative stand-level analysis in an Italian mountainous district

L. Nonini
Primo
;
M. Fiala
Secondo
2021-09

Abstract

The first aim of the study was to present the methodology applied by the model WOody biomass and Carbon ASsessment to compute the past potentially available residues (RA; branches and tops only; t·yr−1 of dry matter, DM), potentially generated heat and electricity (TE, EE, respectively; GJ·yr−1) and potentially avoided CO2 emissions into the atmosphere (EM; t·yr−1 CO2) for the final combustion process. The available residues are computed at the forest stand level through a recovery rate based on six technical parameters. The methodology was applied to the public stands of Valle Camonica district (Italy) (total area: 3.67·104 ha; period: 1984–2016). The mass of residues calculated for that period was used to estimate the current supply, i.e. 2.15·103 ± 6.04·102 t·yr−1 DM. By assuming that this mass was used in an Organic Rankine Cycle (ORC) unit of a local centralized heating plant, TE = 2.06·104 ÷ 2.41·104 GJ·yr−1 and EE = 5.08·103 ÷ 5.95·103 GJ·yr−1. By assuming that: (i) heat generated by the ORC replaced heat produced by conventional natural gas-based plants; (ii) electricity generated by the ORC replaced electricity generated by Italian natural gas-based plants-mix (combined heat and electricity production) EM = 1.85·103 ÷ 2.17·103 t·yr−1 CO2.
avoided CO2 emissions; empirical model; energy generation; forest management plan; forest stand; logging residues
Settore AGR/09 - Meccanica Agraria
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/868072
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