Measured performance of exhaust air heat pumps in Finnish apartment buildings
نویسندگان
چکیده
The energy efficiency of existing apartment buildings is playing an important role in and climate targets. In Finland, mechanical exhaust ventilation system commonly used older buildings. Hence, there could be saving potential by air heat pump (EAHP). this work two cases have been studied. Buildings were built 1960’s 1970’s renovation equipped with hybrid heating system: district system. Two years measurement data, 2018 2019, was collected to evaluate the performance systems. According data monthly coefficient (COP) calculated as well seasonal (SCOP) defined. COP values varied from 3,1 4,6 SCOP about 3,7. Heating cost savings 23-31 %. Energy class before after EAHP installation calculated. If at least 50 % consumption covered then also improved.
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ژورنال
عنوان ژورنال: E3S web of conferences
سال: 2021
ISSN: ['2555-0403', '2267-1242']
DOI: https://doi.org/10.1051/e3sconf/202124606001