ARQUS Building
ZARAGOZA. ESPAÑA
2021
Aquarea Air to Water Heat Pump, Control, Air to Air Heat Pump, Refrigeration, Residential
Outdoor units: 171 units WH-UD03JE / 6 units U250PZH2E8
Indoor units: 171 units WH-SDC0305J3E5 / 6 units PAW-VP750LDH
GRUPO LOBE, ARPA PROPANO
The ARQUS building makes up a complete block comprising 171 subsidised housing units located in the southern expansion area of the city of Zaragoza, in the Arcosur neighbourhood. In this Passivhaus Classic certified building, Grupo Lobe has made a commitment to innovation and the latest technologies to provide comfort, energy efficiency, quality and sustainability, demonstrating its commitment to making nearly zero-energy housing increasingly affordable for the general public.
Challenge
All building services are powered by electricity, with no dependence on gas or other fossil fuels. This saves on fixed costs, taxes and maintenance. The complex has been prepared for the current transition to clean energy consumption, with the potential to choose renewable electricity suppliers and significantly reduce the carbon footprint associated with the residents’ lifestyles.
Solutions & Tech Applied
The terminal air-conditioning delivery unit used is underfloor heating/cooling, which incorporates humidity and temperature probes to regulate the equipment automatically and achieve predefined environmental conditions. Thanks to the ability to operate according to the compensation curve, it is possible to achieve surprisingly high efficiency and to maintain comfortable indoor conditions with very low power consumption. The central control panel allows remote monitoring of the consumption and performance of the equipment installed in each of the homes, as well as determining the room and supply temperature setpoint in the terminal units through the Aquarea Smart Cloud service. The remote assistance provided by Panasonic SAT via the Aquarea Service Cloud service is also very useful in the event of an incident. The availability of air-to-water aerothermal units with small capacity (3 kW) in Panasonic's catalogue has made it possible to supply the low thermal loads of Passivhaus homes with a single unit and in a way that is adjusted to the demand in both winter and summer. Other individual aerothermal systems available on the market have higher capacities, which makes it necessary to oversize the installed capacity in near-zero-consumption houses that do not have a very large surface area. The ability to supply collective domestic hot water through high-temperature aerothermal equipment without the need to supplement this with a gas boiler or solar thermal or photovoltaic boiler has freed up the roofs of the building for the use and enjoyment of the penthouse flats, as well as not taking up space in the kitchens or terraces for individual water accumulation. It also eliminates the need for gas connection and supply, chimneys with flue gas emissions, boiler rooms and all associated maintenance. The ARQUS Building was the first building that Grupo Lobe designed with electricity as the sole energy demand, achieving a collective domestic hot water installation using high temperature aerothermal energy. This air-conditioning solution using Panasonic aerothermal systems has served as a model for at least 6 other Passivhaus-certified collective housing developments built in various parts of Spain.
Key Tech Features
Individual Panasonic aerothermal units were used for heating and cooling
The installed equipment is of high efficiency, which guarantees a COP of 3.64 and a SEER of 3.52.
Capacity
3 kW/25 kW
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