Heat pump air curtains in fashion retail in Milan
Air curtains are an essential element of the ventilation system to ensure energy savings in building entrances. And if these air curtains are heated in a heat pump system, it makes them highly efficient devices.
Our distributor in Italy, Eurotecno, has carried out a high energy saving project by installing an Airtècnics air curtain with EC fans, connected to a heat pump system in the doorway of a Scorpion Bay men's fashion shop.
High energy savings
Heat pumps have the ability to transfer energy from the environment into a heat exchanger, using very little electrical energy from the mains, making it a high energy saving system with low environmental impact. Airtècnics DX air curtains incorporate a direct expansion coil that, connected to a heat pump, is offered as a low consumption alternative to the classic electric heating or hot water heating coils.
The running costs of a heat pump air curtain are lower than those of an electrically heated air curtain, as can be seen in the following example for a typical door:
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| Electrical air curtain | Heat pump air curtain | Diference |
Door dimension: | 2m x 3m | Total heating | 18 kW | 16 kW | 2 kW |
Working: | 12 h/d, 6 d/s, | Air curtain price | 4.724 €/ud | 7.413 €/ud | 2.689 € |
| 26 semanas | Energetic consumption | 33.696 kWh | 29.952 kWh | 11.924,64 kwh |
Energy cost: | 0,35€ KW/h | Energetic costs | 15.482,38 € | 4.312,64 € | 11.169,74 € (72%) |
Air curtain: | ECM 2000, 16 kW | CO2 emissions | 17.694,14 kg | 4.928,73 kg | 12.765,41 kg |
COP: | 3,50 W/W anual | Installation | 500 € | 2500 € | 2000 € |
Under these conditions, it can be concluded that the payback period for the installation of a heat pump air curtain compared to electric heating elements is just over one year (13 months). A heat pump air curtain saves energy and CO2 emissions to the environment: in one year, 12,765 kg less CO2 are emitted and the economic savings are more than € 11,000.
