Hotel Aleksandar Palace
Originally built in 1998, Hotel Aleksandar Palace underwent a significant renovation completed in 2020. As part of this renovation, the hotel transitioned from using an oil-burner to a new heat pump system.
To ensure a successful transition, the customer received support from IMI for system design and sizing. The upgraded system was equipped with IMI balancing valves, control valves with actuators, and a pressure maintenance system solution.
Following the renovation, the use of fossil fuels was completely eliminated, and overall energy consumption for heating and cooling was reduced by 65%, assuming 1 liter of oil contains 10 kWh of energy. This project was a renovation in the hospitality sector, with no district heating or district cooling, located in Skopje, North Macedonia, covering 16,000 square meters and six floors.
The Hydronic Challenge
The renovation presented several challenges. These included assisting the designer in converting the HVAC system from constant to variable flow, addressing issues with interactivity and compatibility within the system, resolving problems related to dissolved air in the pipe network, and implementing ground source (geothermal) heat pumps.
The Solution
IMI provided a comprehensive solution to these challenges. Variable flow was implemented for fan coil units (FCU) and air handling units (AHU), resulting in significant financial savings and reduced CO2 emissions. The renovation achieved notable energy savings by eliminating oil consumption for the boiler and reducing annual electricity consumption. The IMI products installed during the renovation included TA Compact-P, TA Modulator, TA Slider, EMO-T, Transfero, BR12WT, CV 316 GG, STAD, and STAF. These products played a crucial role in ensuring the efficiency and effectiveness of the new HVAC system.