University of Jyväskylä

Challenge

The aim of the study was evaluate low temperature heating and high temp cooling system solution development Sensus, which is developed by Are (one of the biggest HVAC contractors in Finland), in the modern university office building. One of the key elements in the Sensus system is to make cooling power into chilled panels with preheating coil of the ventilation system. And also the automation system is advanced compared to typical solutions. The challenge was to make a fair and reliable comparison between traditional system and Sensus.

(For more information about Sensus system)

The combined heating and cooling radiant panel system with quite large surface area allowed intermediate heating and cooling. Optimal free cooling usage. Heat load usage of datacentre in building service systems. Demand control of artificial light CO2-based demand ventilation Compared to traditional system Sensus system gave 15 % computational energy savings in heating (wo DHW) 28 % computational energy savings in cooling electrical energy

Solution

The combined heating and cooling radiant panel system with quite large surface area allowed intermediate heating and cooling. Optimal free cooling usage. Heat load usage of datacentre in building service systems. Demand control of artificial light CO2-based demand ventilation.

Result

Compared to traditional system Sensus system gave:

• 15 % computational energy savings in heating (wo DHW)
• 28 % computational energy savings in cooling electrical energy

Sector

• Office

Categories

• Whole-building studies

Features

• Control systems
• Cooling and heating
• Customized designed HVAC systems
• System and plant sizing
• Ventilation

Figure 1. Whole building

Figure 2. Sensus air handling unit

Figure 3. Detailed occupancy profile.