Builders of food storage warehouses and ice skating rinks realize that when running larger
freezer rooms in those buildings can freeze the ground below the
building. The freezing ground will heave the floor slabs ruining the
floors. To prevent the floor heaving we install "Anti-heave" slabs
below the freezer floors to keep the ground above freezing
temperatures.
These Permafrost Prevention under slab systems are often required by the building architect or engineer.
Pexheat will perform the services to calculate the needed tubing and water temperatures and flow rates to prevent the ground freezing. You may be surprised to know how little tubing and how little heat is needed. However, to maintain a proper Anti-heave slab temperature sufficient flow rates need to be maintained. The heat can be extracted by a heat exchanger that recovers heat off the buildings cooling units.
Control systems can be as simple as a pump, valve and temperature
gauge set to maintain sufficient heat transfer rates. Or we also
provide Anti-heave slab control systems that can come on pre-assembled
skids with redundant pumps and alarm systems for maximum reliability.
Please contact us for a free quote.