{"id":144960,"date":"2026-08-31T17:03:03","date_gmt":"2026-08-31T15:03:03","guid":{"rendered":"https:\/\/www.velasolaris.com\/?post_type=funktionen&p=144960"},"modified":"2026-08-31T17:03:05","modified_gmt":"2026-08-31T15:03:05","slug":"building-cooling-design","status":"publish","type":"funktionen","link":"https:\/\/www.velasolaris.com\/en\/features\/building-cooling-design\/","title":{"rendered":"Building cooling design"},"content":{"rendered":"
Home<\/a><\/span> <\/i> Features<\/a><\/span> <\/i> Building cooling design<\/span><\/span><\/div>\n\n\n
\"active<\/figure>\n\n\n\n

Building cooling design: free cooling and active cooling<\/h1>\n\n\n\n

Many buildings require cooling as well as heating. But which design approach provides the most efficient supply at the lowest cost? Is it passive cooling via the ground, active cooling with a heat pump, or a combination of both?<\/p>\n\n\n\n

With Polysun, you can compare different supply concepts and validate the sizing of the chiller before construction begins. The software shows which building cooling solution reliably ensures comfort, avoids oversizing and achieves the lowest life-cycle costs.<\/p>\n\n\n\n

\n
Request Project Support<\/a><\/div>\n\n\n\n
Try for free<\/a><\/div>\n\n\n\n
Attend Webinar<\/a><\/div>\n<\/div>\n\n\n\n
\n
\n
\n
\n

Why validate building cooling systems before construction?<\/h2>\n\n\n\n

The design of cooling systems is often based on rules of thumb and safety margins. This can result in systems that are oversized, incur unnecessary investment costs and operate inefficiently. At the same time, it remains unclear whether the chosen concept will reliably provide comfort, even in extreme weather conditions.<\/p>\n\n\n\n

With Polysun, however, different system variants can be validated using real climate data and load profiles. The software calculates cooling loads, coverage shares and performance factors for every point in the year. This enables the most suitable concept to be identified early on and allows recommendations to be backed up with simulation results.<\/p>\n<\/div>\n\n\n\n

\n
\"building<\/figure>\n<\/div>\n<\/div>\n\n\n\n
\n
\n
\n\t\t\t
\n\t\t\t\t
\n\n
\n\t\t\t\t\t\t\t\t\t\t\t\t\t
\n\n
\n
\n\t\t\t\t\t\t\t\t\t\t\t\"\" <\/div>\n\t\t\t\t\t\t\t\t\t\t

Comparing variants in hours instead of weeks<\/h3> <\/div>\n
\n

Various cooling concepts \u2014 purely passive, purely active, or hybrid \u2014 can be compared based on the same boundary conditions.<\/p>\n<\/div>\n <\/div>\n\n <\/div>\n\t\t\t\t\t\t\t

\n\n
\n
\n\t\t\t\t\t\t\t\t\t\t\t\"\" <\/div>\n\t\t\t\t\t\t\t\t\t\t

Avoid oversizing<\/h3> <\/div>\n
\n

Assumptions are being replaced by system-based validation. The simulation shows which chiller actually meets the demand\u2014without unnecessary safety margins.<\/p>\n<\/div>\n <\/div>\n\n <\/div>\n\t\t\t\t\t\t\t

\n\n
\n
\n\t\t\t\t\t\t\t\t\t\t\t\"\" <\/div>\n\t\t\t\t\t\t\t\t\t\t

Heating and cooling operations in one simulation<\/h3> <\/div>\n
\n

Systems that need to provide both heating and cooling require a holistic approach. Polysun simulates both operating modes and shows how they are distributed throughout the year.<\/p>\n<\/div>\n <\/div>\n\n <\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t <\/div>\n <\/div>\n\t\t\t\t\n\t\t\t\t <\/div>\n\t\t <\/div>\n <\/section>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n

What typical building cooling applications does Polysun cover?<\/h2>\n\n\n\n
\"hybrid<\/figure>\n\n\n\n
\n
\n

Polysun enables different design variants to be simulated and their operating behaviour to be compared under real operating conditions. Each variant is calculated using the same climate data and load profiles to ensure a fair and traceable comparison.<\/p>\n<\/div>\n\n\n\n

\n