Optimal Operation of Low-Capacity Heat Pump Systems for Residential Buildings through Thermal Energy Storage
| Autor: | Carlo Bartoli, Paolo Conti, Alessandro Franco, Daniele Testi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Buildings
Energy efficiency Hardware-in-the-loop (HiL) Heat pumps (HP) Optimal control Thermal energy storage (TES) 020209 energy Nuclear engineering Geography Planning and Development TJ807-830 02 engineering and technology Management Monitoring Policy and Law TD194-195 Thermal energy storage Renewable energy sources law.invention hardware-in-the-loop (HiL) Generator (circuit theory) heat pumps (HP) optimal control 020401 chemical engineering law Thermal 0202 electrical engineering electronic engineering information engineering GE1-350 0204 chemical engineering energy efficiency Environmental effects of industries and plants Renewable Energy Sustainability and the Environment buildings Sizing Environmental sciences Volume (thermodynamics) Environmental science thermal energy storage (TES) Efficient energy use Heat pump |
| Zdroj: | Sustainability Volume 13 Issue 13 Sustainability, Vol 13, Iss 7200, p 7200 (2021) |
| ISSN: | 2071-1050 |
| DOI: | 10.3390/su13137200 |
| Popis: | The paper provides results from a hardware-in-the-loop experimental campaign on the operation of an air-source heat pump (HP) for heating a reference dwelling in Pisa, Italy. The system performances suffer from typical oversizing of heat emission devices and high water-supply temperature, resulting in HP inefficiencies, frequent on-off cycles, and relevant thermal losses on the hydronic loop. An experimentally validated HP model under different supply temperatures and part-load conditions is used to simulate the installation of a thermal storage between heat generator and emitters, in both series and parallel arrangements. Results relative to a typical residential apartment show that the presence of the thermal storage in series configuration ensures smoother heat pump operation and energy performance improvement. The number of daily on-off cycles can be reduced from 40 to 10, also saving one-third of electric energy with the same building loads. Preliminary guidelines are proposed for correctly sizing the tank in relation to the HP capacity and the average daily heating load of the building. A storage volume of about 70 L for each kilowatt of nominal heating capacity is suggested. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|