Infosys IT park | Hyderabad, India

Concrete core tempering – added comfort and 35% cost savings

Optimized working conditions for 30,000 employees

Infosys is a pioneer of the Indian IT sector. Since it was founded in the early 1980s, the group has undergone huge growth. Today, the organization employs 130,000 members of staff around the world. Rapid growth is only one clear indication of its success – Infosys was also the first company on the Indian subcontinent to become a member of the RE100. At present, 65 well-known companies are part of the RE100 initiative. These companies are committed to meeting 100% of their energy requirements from renewable sources by 2018.

Our solutions
The IT park in Hyderabad provides workstations for more than 30,000 employees distributed over a site which is 200,000 m2 in size. What’s more, the atmosphere on site is pleasant and cool. Our close-to-surface concrete core tempering system provides Infosys with two benefits. Firstly, it saves more than 200 tons of CO2 per year, thereby bringing the company one step closer to reaching its target under the RE100 initiative. Secondly, it enables the company to gain independence from the unstable power grid in India.

Concrete core tempering – the alternative heating and cooling system

The close-to-surface concrete core tempering system is an evolution of the principle of concrete core tempering, which is based on the use of storage capacity in structural components. The building’s concrete mass is used to store heat, which facilitates heating and cooling operational cycles at a low, resource-saving temperature level. The close-to-surface variant responds even more quickly to fluctuations in temperature. Refrigeration systems can be much more compact than conventional air conditioning units.

Benefits of the system

  • Transfer of energy incurs minimal losses while simultaneously achieving the best possible exchange rates
  • Can be combined most effectively with regenerative energy sources such as heat pumps or geothermal energy systems
  • Shorter response times
  • Individual room control option
  • Safer than the standard thanks to a fire resistance rating of F120
SiteHyderabad, Indien
Completion date2011
Construction projectNew development
Type of buildingOffice buildings
Products/systemsClose-to-surface concrete core tempering
Key termsConcrete core activation, structural component activation

Added comfort with 35% less energy consumption 
In comparison to a full air conditioning system, concrete core tempering reduces annual energy consumption by 35%. This was the result of our pilot project in Hyderabad, where we, together with Infosys, directly tested a full air conditioning system against our concrete core tempering solution in two structurally identical buildings.

The pilot project
The complex has a symmetrical layout. While one section of the building was being tempered by our system in combination with a small air conditioning unit, another section was being cooled using a conventional full air conditioning system.

The results: Savings of EUR 21,000 per year The performances of the competing systems were documented and compared at Braunschweig University of Technology. Through concrete core tempering, Infosys is able to make cost savings of around EUR 21,000 per year while cutting energy consumption by 35%. The employees in the section of the building with the alternative air conditioning solution also benefit more than their counterparts. They found the indoor air temperature to be cooler and more pleasant – despite it actually being 2°C higher than in the section with the full air conditioning system. This is because thermal building component activation allows for evenly distributed cooling (or heat on cold days) without any drafts or irritating mechanical noise.