Hotel Sant Metges, Sant Julià de Ramis

Its exclusivity and attention to detail make this hotel an ideal place for a unique experience, with exceptional architecture, surroundings and identity.

Hotel Sant Metges stands in a privileged spot at the top of Sant Metges hill in Sant Julià de Ramis. It is part of La Fortaleza, a complex set in a former late-19th-century military building, together with the Atempo gastronomic restaurant and DOR Museum, a jewellery museum and art centre.

HVAC system

The 5-star hotel has 15 luxury rooms, a restaurant and a jewellery museum, all air-conditioned by 4 AISIN (Toyota Group) gas engine-driven compression heat pumps.

The particular features of the site and the project requirements led the designers to look for a highly efficient and reliable solution, and they chose a gas engine-driven compression heat pump system.

Given the limitations of the site and the gas distribution network, an LPG tank was installed to supply the HVAC system and the kitchens. Using LPG makes gas available anywhere at an extremely competitive price.

The total installed capacity is 250 kW of cooling and 295 kW of heating, provided by three AISIN GHP 25HP gas heat pumps and a fourth AISIN GHP 16HP heat pump.

For the indoor HVAC system in the different spaces, a direct-expansion VRF system with R-410A refrigerant was chosen, with 36 AISIN ducted indoor units.

These gas engine-driven HVAC units also produce domestic hot water at 65 ºC all year round by recovering the heat from the engine and exhaust gases, saving more than 60 % on DHW generation compared with a conventional condensing boiler.

Each room is controlled independently with individual controls, and a remote central control system allows all the indoor units to be programmed for the whole year.

Energy efficiency and air-source technology

Producing energy efficiently, respecting the environment and making the most of renewable energy: AISIN has brought these two requirements together in a single product. The GHP gas heat pump combines proven technologies to create innovative solutions that have revolutionised energy production, optimising the use of primary energy such as gas and harnessing the energy in the air. It also recovers heat to produce DHW completely free of charge.

AISIN heat pumps are driven by a gas combustion engine specially developed and optimised by TOYOTA, which ensures high reliability and very long maintenance intervals.

All these advantages place AISIN gas heat pumps among the best technologies on the market for heating, cooling and DHW production, with an efficiency that can even exceed 200 % on primary energy. AISIN gas heat pumps deliver the same comfort levels using less energy and therefore generating fewer greenhouse gas emissions.

The result of all these improvements is higher performance in both heating and cooling mode. The increase in average seasonal efficiency achieves Energy Class A++.

Competitive advantages of AISIN Toyota gas heat pumps

AISIN Toyota gas heat pumps offer:

• High A++ seasonal efficiency.
• Full recovery of waste energy to produce DHW free of charge.
• Use of the energy in the air (air-source energy) as renewable energy.
• Lower CO₂ emissions.
• A higher energy class for the building.
• Major savings in operating energy costs.
• TOYOTA reliability.