The HVAC system of the TignÃ¨ Point development in Malta, made up of The Point Shopping Mall, a dozen shops and restaurants outside the main building, 200 occupied luxury apartments plus other 140 still under construction and 50 large offices, is a shining example of innovation and sustainability.
The system is based on 4 FOCS2-W /H /CA 3602, 1 FOCS2-W /H /CA-E 3602 with HWT kit, Climavenetaâ€™s water to water high efficiency heat pumps, with hydraulic side reversibility and 2 EW-HT1204/S, Climavenetaâ€™s water to water heat pumps, heating only, for very high temperature water production.
FOCS2-W /H produce hot water at 55Â°C in the condensers and, at the same time, cold water in the evaporators. These units serve the whole development for space heating and cooling, on the basis of a 4-pipe system. In case of loads mismatch (heating load is higher than cooling load or vice versa), the dissipation of the redundant output is made by external heat exchangers, exploiting sea water, widely available at a constant temperature all year round in Malta.
EW-HT heat pumps use a part of the water heated by the FOCS2-W /H as a â€œcoldâ€ source (evaporator) to produce water at 78Â°C (condenser). The capability of taking advantage of water up to 45Â°C allows these heat pumps to be completely integrated into the system and to produce very high temperature water in a very efficient way, in other words with a COP=5.
The 78Â°C water circulates in two additional pipes (the system is based on a total of 6 pipes), supplying domestic hot water to all the buildings, in accordance with anti-legionella regulation that in Malta imposes a domestic hot water production at a minimum of 70Â°C. Furthermore the very hot temperature water produced by EW-HT serve also the nearby Fortina Resort both for space heating and domestic hot water production. Thanks to the connection to the new plant, the hotel switched off its already existing gas boiler, thus reducing energy consumption and CO2 emissions on site.
More pictures available in the press kit.
Sara Di Clemente