Local sharing of cogeneration energy through individually prioritized controls for increased on-site energy utilization

Janne Hirvonen, Genku Kayo, Ala Hasan, Kai Siren

    Research output: Contribution to journalArticleScientificpeer-review

    19 Citations (Scopus)

    Abstract

    All over the world, including Japan, there are targets to decrease building energy consumption and increase renewable energy utilization. Combined heat and power (CHP) plants increase energy efficiency and are becoming popular in Japan. CHP plants produce both heat and power simultaneously, but there is not always a need for both. A cluster of several different buildings can increase total efficiency and reduce primary energy (PE) consumption by sharing excess heat and electricity between neighboring buildings. If the generated energy comes from renewable sources, energy sharing makes it easier to reach the net zero energy balance. By adjusting CHP sizes and operation patterns, the wasted heat and primary energy consumption can be minimized.Energy sharing has been explored in situations with identical buildings and centrally administered energy systems before, but not with different building types with separate systems. In this study, a cluster of Japanese office and residential buildings were combined to allow heat and electricity sharing based on cogeneration, using individually prioritized control (IPC) systems. TRNSYS simulation was used to match energy generation with pregenerated demand profiles. Absorption cooling was utilized to increase the benefits of local heat generation. Different CHP operation modes and plant sizes were tested.The benefit of surplus energy sharing depends on the CHP capacities and the fuel type. When using biogas, larger CHP plants provided lower total primary energy consumption, in the most extreme case lowering it by 71%, compared to the conventional case. Using natural gas provided only a 6% decrease. The savings resulting from energy sharing were between 1% and 9% with biogas and between 1% and 6% using natural gas. The least amount of PE was consumed by having large CHP plants with biogas, due to the value of renewable electricity. Using natural gas, thermal tracking had the lowest PE consumption.
    Original languageEnglish
    Pages (from-to)350-363
    JournalApplied Energy
    Volume135
    DOIs
    Publication statusPublished - 2014
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    combined heat and power
    cogeneration
    Energy utilization
    Cogeneration plants
    power plant
    energy
    biogas
    Biogas
    natural gas
    electricity
    Natural gas
    Electricity
    Absorption cooling
    energy utilisation
    Hot Temperature
    energy efficiency
    Heat generation
    energy balance
    Energy balance
    control system

    Keywords

    • zero energy communities
    • energy sharing
    • distributed generation
    • on-site energy matching
    • renewable energy

    Cite this

    @article{f07380500bce477b95867d9b9d8b61a3,
    title = "Local sharing of cogeneration energy through individually prioritized controls for increased on-site energy utilization",
    abstract = "All over the world, including Japan, there are targets to decrease building energy consumption and increase renewable energy utilization. Combined heat and power (CHP) plants increase energy efficiency and are becoming popular in Japan. CHP plants produce both heat and power simultaneously, but there is not always a need for both. A cluster of several different buildings can increase total efficiency and reduce primary energy (PE) consumption by sharing excess heat and electricity between neighboring buildings. If the generated energy comes from renewable sources, energy sharing makes it easier to reach the net zero energy balance. By adjusting CHP sizes and operation patterns, the wasted heat and primary energy consumption can be minimized.Energy sharing has been explored in situations with identical buildings and centrally administered energy systems before, but not with different building types with separate systems. In this study, a cluster of Japanese office and residential buildings were combined to allow heat and electricity sharing based on cogeneration, using individually prioritized control (IPC) systems. TRNSYS simulation was used to match energy generation with pregenerated demand profiles. Absorption cooling was utilized to increase the benefits of local heat generation. Different CHP operation modes and plant sizes were tested.The benefit of surplus energy sharing depends on the CHP capacities and the fuel type. When using biogas, larger CHP plants provided lower total primary energy consumption, in the most extreme case lowering it by 71{\%}, compared to the conventional case. Using natural gas provided only a 6{\%} decrease. The savings resulting from energy sharing were between 1{\%} and 9{\%} with biogas and between 1{\%} and 6{\%} using natural gas. The least amount of PE was consumed by having large CHP plants with biogas, due to the value of renewable electricity. Using natural gas, thermal tracking had the lowest PE consumption.",
    keywords = "zero energy communities, energy sharing, distributed generation, on-site energy matching, renewable energy",
    author = "Janne Hirvonen and Genku Kayo and Ala Hasan and Kai Siren",
    note = "Project code: 82593",
    year = "2014",
    doi = "10.1016/j.apenergy.2014.08.090",
    language = "English",
    volume = "135",
    pages = "350--363",
    journal = "Applied Energy",
    issn = "0306-2619",
    publisher = "Elsevier",

    }

    Local sharing of cogeneration energy through individually prioritized controls for increased on-site energy utilization. / Hirvonen, Janne; Kayo, Genku; Hasan, Ala; Siren, Kai.

    In: Applied Energy, Vol. 135, 2014, p. 350-363.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Local sharing of cogeneration energy through individually prioritized controls for increased on-site energy utilization

    AU - Hirvonen, Janne

    AU - Kayo, Genku

    AU - Hasan, Ala

    AU - Siren, Kai

    N1 - Project code: 82593

    PY - 2014

    Y1 - 2014

    N2 - All over the world, including Japan, there are targets to decrease building energy consumption and increase renewable energy utilization. Combined heat and power (CHP) plants increase energy efficiency and are becoming popular in Japan. CHP plants produce both heat and power simultaneously, but there is not always a need for both. A cluster of several different buildings can increase total efficiency and reduce primary energy (PE) consumption by sharing excess heat and electricity between neighboring buildings. If the generated energy comes from renewable sources, energy sharing makes it easier to reach the net zero energy balance. By adjusting CHP sizes and operation patterns, the wasted heat and primary energy consumption can be minimized.Energy sharing has been explored in situations with identical buildings and centrally administered energy systems before, but not with different building types with separate systems. In this study, a cluster of Japanese office and residential buildings were combined to allow heat and electricity sharing based on cogeneration, using individually prioritized control (IPC) systems. TRNSYS simulation was used to match energy generation with pregenerated demand profiles. Absorption cooling was utilized to increase the benefits of local heat generation. Different CHP operation modes and plant sizes were tested.The benefit of surplus energy sharing depends on the CHP capacities and the fuel type. When using biogas, larger CHP plants provided lower total primary energy consumption, in the most extreme case lowering it by 71%, compared to the conventional case. Using natural gas provided only a 6% decrease. The savings resulting from energy sharing were between 1% and 9% with biogas and between 1% and 6% using natural gas. The least amount of PE was consumed by having large CHP plants with biogas, due to the value of renewable electricity. Using natural gas, thermal tracking had the lowest PE consumption.

    AB - All over the world, including Japan, there are targets to decrease building energy consumption and increase renewable energy utilization. Combined heat and power (CHP) plants increase energy efficiency and are becoming popular in Japan. CHP plants produce both heat and power simultaneously, but there is not always a need for both. A cluster of several different buildings can increase total efficiency and reduce primary energy (PE) consumption by sharing excess heat and electricity between neighboring buildings. If the generated energy comes from renewable sources, energy sharing makes it easier to reach the net zero energy balance. By adjusting CHP sizes and operation patterns, the wasted heat and primary energy consumption can be minimized.Energy sharing has been explored in situations with identical buildings and centrally administered energy systems before, but not with different building types with separate systems. In this study, a cluster of Japanese office and residential buildings were combined to allow heat and electricity sharing based on cogeneration, using individually prioritized control (IPC) systems. TRNSYS simulation was used to match energy generation with pregenerated demand profiles. Absorption cooling was utilized to increase the benefits of local heat generation. Different CHP operation modes and plant sizes were tested.The benefit of surplus energy sharing depends on the CHP capacities and the fuel type. When using biogas, larger CHP plants provided lower total primary energy consumption, in the most extreme case lowering it by 71%, compared to the conventional case. Using natural gas provided only a 6% decrease. The savings resulting from energy sharing were between 1% and 9% with biogas and between 1% and 6% using natural gas. The least amount of PE was consumed by having large CHP plants with biogas, due to the value of renewable electricity. Using natural gas, thermal tracking had the lowest PE consumption.

    KW - zero energy communities

    KW - energy sharing

    KW - distributed generation

    KW - on-site energy matching

    KW - renewable energy

    U2 - 10.1016/j.apenergy.2014.08.090

    DO - 10.1016/j.apenergy.2014.08.090

    M3 - Article

    VL - 135

    SP - 350

    EP - 363

    JO - Applied Energy

    JF - Applied Energy

    SN - 0306-2619

    ER -