Absorption and compression heat pump systems for space heating and DHW in European buildings: Energy, environmental and economic analysis. (March 2018)

• Record Type: Journal Article
• Authors: Scoccia, Rossano; Toppi, Tommaso; Aprile, Marcello; Motta, Mario
• Is Part Of: Journal of building engineering. Volume 16(2018)
• Page Start: 94
• Page End: 105
• Publication Date: 2018-03
• Subjects: AEH Auxiliary Electric Heater -- AEF Auxiliary Energy Factor -- COP Coefficient Of Performance (heating mode) -- CR Capacity Ratio -- CFR Compressor Frequency Ratio -- CB gas Condensing Boiler -- DHW Domestic How Water -- EHP Electric Heat Pump -- EU European Union -- GCV Gross Calorific Value -- GHP Gas absorption Heat Pump -- GUE Gas Utilization Efficiency (heating mode) -- HS Hydraulic Separator -- IAM Incidence Angle Modifier -- LF Load Factor -- MCHP Micro Combined Heat and Power -- N New building -- NZEB Net Zero Energy Building -- O Old building -- PEF Primary Energy Factor -- PER Primary Energy Ratio -- R Refurbished building -- SFH Single Family House -- SH Space Heating -- SS Solar thermal System -- y year; Building heating system -- DHW -- Seasonal performance -- Primary energy savings -- CO2 savings -- Cost analysis -- Numerical modelling -- Thermal driven heat pump -- Electric heat pump -- Energy systems comparison; Building -- Periodicals; 690.05
• DOI: 10.1016/j.jobe.2017.12.006
• Languages: English
• ISSNs: 2352-7102

Abstract

Abstract: The selection of the proper device for space heating and domestic hot water for a building is crucial to achieve good energy and economic performances. For a single-family house, the most common heating device is the condensing boiler. Solar systems, electric heat pumps and gas driven sorption heat pumps represent suitable alternatives for improving the efficiency. Although the performances of each technology are well known, their ability to operate efficiently in bivalent heating plants depends on several variables and the choice of the most suitable heating system for a specific building is not straight-forward. The aim of this paper is to compare, under conditions typical of the European region, the seasonal performances of six system configurations that are obtained by combining the most commonly used heating technologies. The comparison is carried out in terms of primary energy consumption for three climatic conditions, changing the quality of the building envelope and the emission system typology. Although the results are sensitive to the primary energy factor for electricity, electric heat pumps generally result the most promising technology for conditions with low thermal lift, while gas heat pumps have the higher performances at high lift. Additionally, the systems are compared in terms of yearly CO2 emissions and economic feasibility, finding scattered results among countries, due to large differences in the local energy mix and energy prices. Highlights: Air sourced heat pumps are compared against condensing boiler and solar. The systems address both space heating and DHW for single-family houses. Nine combinations of climatic conditions and envelope quality are considered. The most efficient heat pump type is found for each climate and building. CO2 savings and acceptable marginal cost by country are presented.