In 2009, real estate company Norrporten commissioned EnergyMachines™ to carry out an Energy Design and review the Vasen Quarter buildings with the aim of presenting an energy efficiency plan for the property. The property covers a floor space of approximately 35,000 sq m on four floors and is the workplace for 1100 people. Tenants include the Survey Office, Courts of Law and the restaurant. The businesses are mostly offices, auditoriums, restaurants and server holds for the Survey Office.
Our Energy Design led to eco-friendly measures that save up to 500 MWh/year. The existing chiller was replaced with an integrated energy system from EnergyMachines™ optimised for cooling the Survey Office server hall. Our energy system also produces comfort cooling and process cooling when the outdoor temperature exceeds +21 C.
The installed Energy Machine’ unit is also designed for heat pump operation and produces around 2000 MWh of heat per year.
The new integrated energy system was deployed in 2010.
Energy consumption/year before Energy Design
- 3,100 MWh district heating
- 1,400 MWh of power/comfort and process cooling
- Total 4,500 MWh
Total consumption for heating, cooling and domestic hot water before analysis and proposals for measures, 128 kWh/sq m/year
Energy consumption/year after Energy Design
- 1,000 MWh district heating
- 1,100 MWh for power for heating, comfort and process cooling
- 2,100 MWh
Total consumption following integrated energy design solution, 60 kWh/sq m/year.