Sant Cugat del Vallès, Spain

Sant Cugat del Vallès (Spain)

Demo responsible: Veolia (VEO) and Ajuntament de Sant Cugat (AJSCV)

Type of building: Tertiary civic center. (Surface: 2.440,25 m2 in 1 floor)

Heated space

1.200 m2

Electricity consumption

~200 MWh/year

Pre-SunHorizon

Reversible air to water heat pump: 93.6 kW (cooling capacity) – 96.3 (heating capacity). Air handling unit (AHU): 110 kW (cooling capacity) – 67.78 (heating capacity). 2 x split air conditioner: 2.1 kW (cooling capacity) – 3 (heating capacity)

Demonstration action:

  • TP3, Solar-driven HP: Solar thermal (TVP) drives the thermal compressor of the adsorption chiller (FAHRENHEIT) with increased efficiency to provide 50kW cooling capacity with existing 93 kW chiller on the existing cooling distribution HP boiler Adsorption chiller Reversible HP Solar thermal PV Thermal Energy Storage RES installed14 — 50 kW — 189 kW — 10,000 l 224 kW
  • Installation of solar panels on flat roof and connections to gallery room
  • Installation of solar thermal tank and chiller in the gallery
  • Integrated control system for the smart operation of H&C system
  • High performance in cooling operation thanks to solar thermal (TVP) and thermal energy storage (RATIOTHERM) to run hybrid adsorption chiller (FAHRENHEIT) at the highest efficiency

Installation of TP3 components in Sant Cugat del Vallès. Main components:

Replicability potential:

  • Medium scale tertiary buildings and residential. New and renovated buildings
  • Sunny climates

Technical and social risks & difficulties

Initial assessment: very limited risk in coupling both innovations (i.e. HP boiler and solar hybrid PV-T).
However, several challenges observed during deployment phase:

  • Minor budget deviations due the rental of cranes and common material
  • The installation of an exchanger in the heat stage has been foreseen to reduce the inlet temperature of the existing hot water heat pump. Temperatures of 70 to 95ºC were not admissible at the inlet of the heat pump
  • The solar panels total surface and distribution had to be adjusted according to the real roof surface.
  • Difficulties to integrate the different monitoring system from different equipment
  • The system had to manage some civil works to adapt the big volume of the thermal tank and some reinforcement had to be perform to support the solar field and the tanks
  • The technical room needs minor adaptations like to increase the passage width for the entrance of the equipment (basically the chillers) and opening wall passages for the interconnection between the thermal tank and the chillers
  • TECHNICAL VISIT IN SANT CUGAT

    On the 17th of November 2021, VEOLIA, CARTIF, CNR ITAE met at the Mira Sol civic center in Sant Cugat (Spain) where the SunHorizon demo manager, Gerard Riba (AJSCV) showcased the technologies installed in the technical room, inside the facility, and on the rooftop of the site. The partners had the chance to visit the […]


  • Discover more about our demo site in St. Cugat (Spain)

    Interview to Mr. Víctor Martínez del Rey, Director of Urban Quality and Mobility Department of Sant Cugat City Council, Ajuntament de Sant Cugat del Vallès (AJSCV), Spain Demo site ID:  Location: Mira-sol Civic Center, in Sant Cugat del Vallès (Spain) Type of building: Tertiary Civic Center. This building was built in two phases:The first one was built […]


    Agree with Terms of Service