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Al- Najah N ational University

Al- Najah N ational University. Mechanical engineering department. Mechanical systems. Prepared by: Ahmad Isteteh Ali Qadoos Mohammed Abu- hatab Mahmoud Hasiba. Optical and nursing room. Building floors applications. HVAC system. 1- Heating 2- Cooling. Mechanical systems.

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Al- Najah N ational University

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  1. Al-NajahNational University Mechanical engineering department Mechanical systems Prepared by: Ahmad Isteteh Ali Qadoos Mohammed Abu-hatab MahmoudHasiba

  2. Optical and nursing room

  3. Building floors applications

  4. HVACsystem 1- Heating 2- Cooling Mechanical systems 1- Cold water 2- Hot water 3- Medical gases 4- drainage ,vent 5- fire system

  5. Inside and Outside Design condition

  6. HVAC system Sample of calculation for class room1 in ground floor Heating Qs= U*A*ΔT……………….inside walls, outside walls, windows and doors Qs,vent,infilt= 1.2*Vvent*(Ti – To)….ventilation and infiltration for sensible Ql,vent,infilt= 3*Vvent,infilt*(Wi – Wo)….ventilation and infiltration for latent Qtotal= Qheating+ Qdomestic Qboiler= 1.1*Qtotal

  7. Cooling Qs= U*A*ΔT……………….inside walls Qs= U*A*CLTDcorr….…….outside wall, convection for windows Qs= A*(SHG)*(Sc)*(CLF)….transmitted windows Qs,vent,infilt= 1.2*Vvent*(To – Ti)….ventilation and infiltration for sensible Ql,vent,infilt= 3*Vvent,infilt*(Wo – Wi)….ventilation and infiltration for latent Qs= qs*n*CLF……………people sensible Ql= ql*n………………...people latent Qs= W*CLF…………… .lighting

  8. Qs= qs*CLF…………………..Equipment Qtotal=∑Qs…………………..total sensible Qtotal=∑Ql…………………...total latent Duct design Vcirculation= Qtotal/1.2(Tcirc – Ti) Number of diffusers= Vcirc(cfm)/400

  9. Cooling and Heating

  10. Coling &Heating Riser

  11. Mechanical systems Cold water

  12. Cold water

  13. Cold water Riser

  14. Hot water

  15. Hot water

  16. Hot Water Riser

  17. Return Hot Water ¾”

  18. Return Hot Water Riser

  19. Make Up Water

  20. Flush Water

  21. Flush Water

  22. Flush Water Riser

  23. Medical Gases

  24. Drainage System

  25. Drainage System

  26. Drainage Stack

  27. Vent Stack

  28. Fire system

  29. Fire System

  30. Riser Fire System

  31. Thank you

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