TY - JOUR
T1 - Heading towards the nZEB through CHP+HP systems
T2 - A comparison between retrofit solutions able to increase the energy performance for the heating and domestic hot water production in residential buildings
AU - Salata, Ferdinando
AU - Golasi, Iacopo
AU - Domestico, Umberto
AU - Banditelli, Matteo
AU - Lo Basso, Gianluigi
AU - Nastasi, Benedetto
AU - de Lieto Vollaro, Andrea
PY - 2017
Y1 - 2017
N2 - Optimizing consumptions in the field of civil construction led to define energy labels for residential buildings. To calculate the building energy demand the EPgl was determined, i.e. the annual consumption per m2 of primary energy. This paper examines the technical solutions useful to optimize the energy demands for heating during space-heating season and domestic hot water production (thanks to energy analysis softwares as MC11300 and TRNSYS) and, at the same time, to take into account the financial issues those interventions implied. The total inside heated surface of the building case study is 1204.00 m2, hence the inside heated volume is about 3250.80 m3. Besides the more traditional interventions concerning the building envelope and its systems, the paper examined the performance of a system obtained through the combination of a cogenerator (CHP) and a heat pump (HP), thus, substituting the conventional boilers of the buildings. CHP+HP solution increases the most the energy label of the building (from a D class with EPgl = 59.62 kW h m−2 year−1, to an A class, with EPgl = 25.64 kW h m−2 year−1), determining an annual energy cost saving of 3,114 € year−1, allowing to amortize installation costs (54,560 €) in a reasonable payback period, i.e. 15.4 years. This innovative solution in the residential sector can be realized through retrofit interventions on existing buildings, hence it leads the current dwelling towards nZEB with a remarkable benefits for the environment.
AB - Optimizing consumptions in the field of civil construction led to define energy labels for residential buildings. To calculate the building energy demand the EPgl was determined, i.e. the annual consumption per m2 of primary energy. This paper examines the technical solutions useful to optimize the energy demands for heating during space-heating season and domestic hot water production (thanks to energy analysis softwares as MC11300 and TRNSYS) and, at the same time, to take into account the financial issues those interventions implied. The total inside heated surface of the building case study is 1204.00 m2, hence the inside heated volume is about 3250.80 m3. Besides the more traditional interventions concerning the building envelope and its systems, the paper examined the performance of a system obtained through the combination of a cogenerator (CHP) and a heat pump (HP), thus, substituting the conventional boilers of the buildings. CHP+HP solution increases the most the energy label of the building (from a D class with EPgl = 59.62 kW h m−2 year−1, to an A class, with EPgl = 25.64 kW h m−2 year−1), determining an annual energy cost saving of 3,114 € year−1, allowing to amortize installation costs (54,560 €) in a reasonable payback period, i.e. 15.4 years. This innovative solution in the residential sector can be realized through retrofit interventions on existing buildings, hence it leads the current dwelling towards nZEB with a remarkable benefits for the environment.
KW - CHP+HP
KW - Energy efficiency
KW - Energy performance certificate
KW - nZEB
KW - Residential sector
KW - Retrofit solution
UR - http://www.scopus.com/inward/record.url?scp=85012054553&partnerID=8YFLogxK
U2 - 10.1016/j.enconman.2017.01.062
DO - 10.1016/j.enconman.2017.01.062
M3 - Article
SN - 0196-8904
VL - 138
SP - 61
EP - 76
JO - Energy Conversion and Management
JF - Energy Conversion and Management
ER -
