Loading in 2 Seconds...
Loading in 2 Seconds...
GROUND-MED PROJECT COIMBRA DEMO-SITE André Quintino Duarte Coimbra, 23 February 2012. Demonstration Building. “Fábrica dos Mirandas”.
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
André Quintino Duarte
Coimbra, 23 February 2012
“Fábrica dos Mirandas”
Total area: 3250m2FourfloorsTwopublicservicesinstalledOffices, laboratories, conferenceroomCapacity for 250 permanentworkers + 72 temporarypeoplein a conferenceroomLocatedclose to a river
The heated /cooled spaces are located in level 3 of the building (last floor).
22 rooms (offices)
Approximately space conditioned area 600 m2
75 mm Diameter PPR Pipes
in the main sections
Limestone / Sand / Silt
High Groundwater flow
Freatic Groundwater level – 5 metres
Reversibility is done on the water side in order to always be in counter current on the heat exchangers.
This is achieved by 3-way motorized valves
The performance of the heat pump prototype was tested at the CIAT Culoz research center.
Heating Capacity – 70.4 kW
Cooling Capacity – 63.5 kW
High efficiency permanent magnet motor pump supplied by Grundfos, with variable speed control.
The Fan Coil units were supplied by CIAT. They are COADIS 2 fancoil units models 235/22 and 235/33. A total of 33 units were installed – 23 units of model 235/22 and 10 units of model 235/33.
These fancoil units are equipped with high efficiency impellers and high efficiency permanent magnet motors.
Each fan coil can be individually regulated by means of a thermostat. Comfort temperature can be selected by the user by means of a wall mounted control and fan speed is controlled automatically by means of a 0-10V control signal.
The fancoils had to be retrofited with an electronic fan speed limiter, because of the noise generated was unacceptable by the users.
The thermal storage tank is to be located in a room adjacent to the machinery room. It is planned to have a volume of 3.5m3 (40% water + 60% PCM).
Research is being conducted with the support of the Fluids Thermal Transfer Group of the Department of Mechanical Engineering on the best design of the tank to ensure optimal heat transfer and to ensure that the storage maximum capacity of the PCM modules is used.
It was found that the most suitable material would be the S46 salt hydrate from PCM products Ltd (UK)
COP = 6,03