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E MPTY B IN T REATMENTS

Learn about heat loss calculations, required BTU, surface area, wall composition, delta temperature, natural infiltration, and ventilation load for bin treatments. Explore different wall compositions and factors to consider for effective heat distribution.

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E MPTY B IN T REATMENTS

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  1. EMPTY BIN TREATMENTS Mimoun Abaraw

  2. Heat Loss Calculations • Required BTU • Surface Area • Wall Composition • Delta Temperature • Natural Infiltration • Ventilation Load

  3. Rectangular Shape • Walls • 2 x Height x Width (Width) • 2 x Height x Length (Length) • Roof • Width x Length • Floor • Width x Length

  4. Cylindrical Shape • Cylinder • R x H x 2 x π • Top Plate • R² x π • Bottom Plate • R² x π

  5. Wall Composition Different construction material have different “U Values”. Concrete U Value:Transmission heat loss, expressed in BTU’s-per-square-foot of exposed surface. Metal

  6. Temperature Difference ΔT = IT - OT = TD 120o (IT) 50o (OT) ΔT = 120o - 50o = 70o ΔT: The difference in the outside design temperature (OT) and the inside design temperature (IT).

  7. Natural Infiltration Air is drawn into a facility because of the pressure imbalance caused by the imbalance in temperature

  8. Ventilation Load The amount of CFH, or Air Flow, needed to heat-up the area to the target temperature and displace or control the natural infiltration in an hours’ time.

  9. Other Factors to Consider • Air Changes • The amount of fresh air that circulates within a facility • Ideal air changes are 4 - 6 per hour • Ductwork Length • Ductwork creates static pressure in distributing the heat • This draws on the CFM or Air Flow of the heat • Negatively affects required CFM and heat discharge

  10. Using Top Opening Use ductwork with holes inside the bin for better heat distribution

  11. Using Bottom Opening No need for ductwork inside the bin

  12. 130° Temperature Monitoring Thermocouple Use same length as the depth of the bin

  13. Any Questions?

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