Design of the heating system for a slab heated warehouse Objectives Description of the problem • Design a heating method in the building which • It is wanted to design a heating system for a involves embedding tubing in the concrete slab to warehouse that stores paint containers at a reach the objective temperature (70°F). temperature of 70°F. • Perform a heat transfer simulation using Inventor Nastran to analyze the heat transfer present along the warehouse. • Select an appropriate pumping system to transport Design Parameters Thickness Time Temperature the heating fluid through the tubing system. Concrete slab (50 ft x100 ft) 8 in Daytime 65°F Sheet metal structure (Insulated) Nighttime 40°F Desirable temperature 70°F Walls (12 ft) 4-in (Insulation) Ceiling 6 in (Insulation) Pipe system characteristics Results Simulations Figure 2 Thermal simulation of the Figure 3 Thermal simulation of the Figure 4 Thermal simulation of the Figure 1 Pipe System Design wall (12ftx50ft) concrete slab ceiling Conclusions • The resultant design has a temperature variation of the water between 73.94°F and 89.37°F through all the copper pipes, that is enough to maintain the warehouse to a constant temperature of 70°F. • The pump selected has a head of 40.4 m, with a power input of 2.03 kW and with an efficiency of 19.6%. This characteristics for the pumping system accomplished the required heating temperature. • At nighttime there is the highest heat losses, so it is the critical scenario. That is why the water temperature is increased to overcome the losses and maintain the constant temperature of 70°F. Heat Transfer NRC: 1828 Esteban Goyes Gabriel Cabezas Carlos Jarrín Luis Naranjo
Enter the password to open this PDF file:
-
-
-
-
-
-
-
-
-
-
-
-