The performance of small scale multi-generation technologies in achieving cost-optimal and zero-energy office building solutions

Ayman Mohamed (Corresponding Author), Mohamed Hamdy, Ala Hasan, Kai Sirén

Research output: Contribution to journalArticleScientificpeer-review

29 Citations (Scopus)

Abstract

This study investigates the economic viability of small-scale, multi-generation systems (combined heat and power (CHP), combined cooling, heating, and power (CCHP)), along with conventional heating and cooling systems combining sixteen heating/cooling energy generation systems (H/C-EGSs). The Energy Performance of Buildings Directive (EBPD) comparative framework methodology is followed. The local cost-optimal solution for an office building, in Helsinki, Finland is determined for each H/C-EGS as well as the global cost-optimum. The suggested energy efficiency measures get 144 building combinations, and alongside the H/C-EGSs, altogether 2304 cases. The results show that the global cost-optimum belongs to the ground source heat pump with free ground cooling. The investigated biomass-based CHPs are economically viable only with high overall efficiency and low power-to-heat ratio due to both low investment and operational costs. The biomass-based CCHPs do not have economic or environmental benefits over the biomass-based CHPs due to the significant increase entailed of both investment and operational costs. The fossil fuel-based CHPs with high operational costs are the worst solutions economically and environmentally. Extending the cost optimal solutions by a photovoltaic panels system yields the net zero-energy office building with minimum life-cycle costs as well.
Original languageEnglish
Pages (from-to)94-108
JournalApplied Energy
Volume152
DOIs
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

Fingerprint

Office buildings
cooling
cost
energy
Costs
Cooling
heating
Heating
Biomass
biomass
Geothermal heat pumps
combined heat and power
Economics
office
Cooling systems
Fossil fuels
energy efficiency
fossil fuel
Energy efficiency
Life cycle

Keywords

  • EPBD recast
  • life-cycle cost
  • biomass
  • combined heating and power (CHP)
  • combined cooling heating and power (CCHP)
  • zero-energy office building

Cite this

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title = "The performance of small scale multi-generation technologies in achieving cost-optimal and zero-energy office building solutions",
abstract = "This study investigates the economic viability of small-scale, multi-generation systems (combined heat and power (CHP), combined cooling, heating, and power (CCHP)), along with conventional heating and cooling systems combining sixteen heating/cooling energy generation systems (H/C-EGSs). The Energy Performance of Buildings Directive (EBPD) comparative framework methodology is followed. The local cost-optimal solution for an office building, in Helsinki, Finland is determined for each H/C-EGS as well as the global cost-optimum. The suggested energy efficiency measures get 144 building combinations, and alongside the H/C-EGSs, altogether 2304 cases. The results show that the global cost-optimum belongs to the ground source heat pump with free ground cooling. The investigated biomass-based CHPs are economically viable only with high overall efficiency and low power-to-heat ratio due to both low investment and operational costs. The biomass-based CCHPs do not have economic or environmental benefits over the biomass-based CHPs due to the significant increase entailed of both investment and operational costs. The fossil fuel-based CHPs with high operational costs are the worst solutions economically and environmentally. Extending the cost optimal solutions by a photovoltaic panels system yields the net zero-energy office building with minimum life-cycle costs as well.",
keywords = "EPBD recast, life-cycle cost, biomass, combined heating and power (CHP), combined cooling heating and power (CCHP), zero-energy office building",
author = "Ayman Mohamed and Mohamed Hamdy and Ala Hasan and Kai Sir{\'e}n",
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The performance of small scale multi-generation technologies in achieving cost-optimal and zero-energy office building solutions. / Mohamed, Ayman (Corresponding Author); Hamdy, Mohamed; Hasan, Ala; Sirén, Kai.

In: Applied Energy, Vol. 152, 2015, p. 94-108.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - The performance of small scale multi-generation technologies in achieving cost-optimal and zero-energy office building solutions

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AU - Hamdy, Mohamed

AU - Hasan, Ala

AU - Sirén, Kai

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PY - 2015

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AB - This study investigates the economic viability of small-scale, multi-generation systems (combined heat and power (CHP), combined cooling, heating, and power (CCHP)), along with conventional heating and cooling systems combining sixteen heating/cooling energy generation systems (H/C-EGSs). The Energy Performance of Buildings Directive (EBPD) comparative framework methodology is followed. The local cost-optimal solution for an office building, in Helsinki, Finland is determined for each H/C-EGS as well as the global cost-optimum. The suggested energy efficiency measures get 144 building combinations, and alongside the H/C-EGSs, altogether 2304 cases. The results show that the global cost-optimum belongs to the ground source heat pump with free ground cooling. The investigated biomass-based CHPs are economically viable only with high overall efficiency and low power-to-heat ratio due to both low investment and operational costs. The biomass-based CCHPs do not have economic or environmental benefits over the biomass-based CHPs due to the significant increase entailed of both investment and operational costs. The fossil fuel-based CHPs with high operational costs are the worst solutions economically and environmentally. Extending the cost optimal solutions by a photovoltaic panels system yields the net zero-energy office building with minimum life-cycle costs as well.

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