Príspevok
Design and control strategy of an innovative CO2 residential monoblock heat pump for domestic hot water
DOI: 10.18462/iir.compr.2024.0635
Sekcia: Heat pumps I
Stav prijatia: Príspevok prijatý
Autori
| Meno | Organizácia | |
|---|---|---|
| Claudia FIABANE | Clivet S.p.a, Feltre, 32032, Italy | |
| Federico SIMONI | Clivet S.p.a, Feltre, 32032, Italy | |
| Mirko BUTI | Clivet S.p.a, Feltre, 32032, Italy | |
| Linda PADOAN | Clivet S.p.a, Feltre, 32032, Italy | |
| Simone PIOVESAN | Clivet S.p.a, Feltre, 32032, Italy | |
| Federico VIRGILIO | Clivet S.p.a, Feltre, 32032, Italy | |
| Mihir Mouchum HAZARIKA | Norwegian University of Science and Technology, Trondheim, 7491, Norway | |
| Engin SÖYLEMEZ | Norwegian University of Science and Technology, Trondheim, 7491, Norway | |
| Armin HAFNER | Norwegian University of Science and Technology, Trondheim, 7491, Norway |
Abstrakt
Carbon dioxide (CO2) as a natural refrigerant proves its potentiality and suitability for residential heat pumps (HP) producing domestic hot water (DHW). Despite the comparable performances of a CO2 HP to units adopting other natural and/or harmful synthetic refrigerants, the components cost represents the main barrier for CO2‘s wider market share, mainly for higher working pressure.
This work presents the thermodynamical and control strategy design of a monoblock HP for DHW with CO2. The product’s uniqueness is being the first with a heating capacity lower than 4 kW on the residential heating market. In particular, the study will focus on the thermodynamic transcritical cycle, component dimensioning and control logic development.
The design took into consideration different technologies and solutions for both gas-cooler and tank, improving heat transfer, coefficient of performance, heating-up time and stratification. On the control side, CO2 involves new algorithms regulating two stepper expansion valves, aimed to adjust: high-pressure, superheating and oil return.
Kľúčové slová
Heat pump, Carbon Dioxide, Domestic Hot Water, Residential, Monoblock