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H-VAC

Important to know

Presentation time: 20 min

Presentation include: 55 slide

Project YouTube: https://www.youtube.com/user/hvac2014

Presentation URL:

Supervision by:

Prof.Dr/Mohmmed FayekProf.Dr/Maher gamil

H-VACAhmed MaherGaber NiazyEman AbdelnaserMahmoud ElsaiedMohammed FathyNaglaa Fathy Ayad Fawzy

Mahmoud Gomaa

Ch.1Introduction about hospital air condition

Ch2.The electric equipment in hospital & filter

Ch.3Air system and type of Air Condition)

Ch4.Load calculation

Ch5.Duct Designing, Air Distribution System &Fans

Ch6.Chilled water system equipment & piping design

Ch7.the project calculation

Appendices

Chapters in

bookventilation

Air conditionEquipment in hospital

Hepa filter Psychometric Analysis

Air condition system

Using HAP

Manual method

Types of Air outlet

Fans water pipe system

pump

Duct calculation

Load calculation

WHAT IS THE MEANING OF H-VAC??

Introduction about

hospital air condition

Up to 70 % fresh airExhaust in the bottomDifference duct pathsVelocity 90 per min

Air condition in hospitals

HOSPITAL CONTENT

THE ELECTRICAL EQUIPMENT IN HOSPITAL

Basement floor• Reception {Monitor 30 inch 90 w , Desktop computer

135 w , Scanner 1200 w ,Printer 90 w , Fax 480 w ,Water cooler}

• Pharmacy {Desktop computer , Monitor 30 inch}

• Outpatient clinics {x-ray system 480 w, blood pressure meter 29 }

• café & Kitchen { Boiler, Cooker ,Refrigerator 1200w , water cooler}

• The x-ray department { Plotter, x-ray system, Desktop computer}

The first floor & second floor• The operating room {Light

system ,Anesthesia system ,Blood warmer 114 w , Sterilizer 60 w ,Respirator 50 w , Electric Shocks }

• Intensive care unit &Rooms sedation

{Respirator 50 w , Electro surgery 109 w ,Device for measuring heartbeat ,Screen to monitor the heart and pressure.}

Third &fourth floor• Patiant room {Monitor 30 inch ,Refrigerator}

FILTER

Type of filter

•1-aluminum•2- WASHEBLE(pag filter)•3- HEPA•4-Carbon

Load calculation

Why we need load calculation

!?

1- The transmission of heat condition

Heat load calculation

{Q= A*U*(Tₒ-Tᵢ)}

2-Solar heat gain• { Q= A*U*(Tₒ-Tᵢ+Ts)}

Solar air temperature (Ts):

Heat load calculation

NOTE:

INTERNAL HEAT GAIN

C)LIGHT

A)PEOPLE

B)EQUIBMENT

D)INFILTIRATION

INTERNAL HEAT GAIN

EXTERNAL HEAT GAIN

VENTELATION

softwareHAP

Refer to appendix 2 in book

COMPARING BETWEEN RESULT BY MANUAL CALCULATION AND CALCULATION USING HAP.

Room Manual HAP

Room1 > 2nd

Floor1.107 Ton 0.75 Ton

Room6 > 2nd

Floor1 Ton 1.2 Ton

Room38 > 3rd

Floor1.2 Ton 1.2 Ton

Room14 > 4th

Floor1.18 Ton 1.2 Ton

DUCT DESIGN

METHOD OF DESIGNING DUCT WORK :

• Velocity• Equal fraction• Static regain

•Air Volume (CFM)•Air Velocity (FPM)•Friction loss (in.of Water per100ft)•Duct Diameter (In.) Round Duct •Duct Depth (In.) Rectangular Duct•Duct Thick (mm)•Duct weight ( kg )

DUCT DESIGN

• Load Estimation ( HAP ) --- Ton R

Unit Selection

•From Catalog --- CFM

Air Volume ( √ ) CFM

AIR VOLUME (CFM)

Air Velocity (FPM)

Refer to appendix 4 in book

friction Loss (____) in water/100ft

( √ )

FRICTION LOSS (IN.OF WATER PER100FT)

DUCT DIAMETER (IN.) ROUND DUCT

Refer to appendix 4 in book

Rectangular Duct

DUCT DEPTH (IN.)

DUCT THICK (MM)

Duct weight ( kg )

Refer to appendix 4 in book

softwareDuct seizer

Refer to appendix 5 in book

DUCT CONSTRACTION

Volume damper

Fire damper

testing

Fan

TYPE OF FAN

1-Centrifugal fan2-Axial fan3-Probbler fan

1)CENTRIFUGAL FAN

A-BACKWARD CURVED BLADE:1-CFM.2-NOT OVER LOAD.3-EXPENSIVE.

B-FORWARD CURVED BLADEC- RADIAL CURVED BLADES.

3)PROBBLER FAN

2)AXIAL FANA-NORMAL AXIAL FANB-TUBO AXIAL FANC-VAN AXIAL FAN

INSTALLATION IN SITE

1-fan section2-In line3-Roof top fan

INSTALLATION RULE

1-Distance between wall & fan2-Direction of Air3-Fresh fan &Exhaust fan

CHILLED WATER SYSTEM

PIPE DESIGN• Selection of pipe diameter: 1)Velocity 2)Flow rate

• Selection of pump for critical bath: 1)Flow rate 2)Head

•Type of balance: 1)balance of bath a) balancing valve b) common reversed return 2)Balance of loads a) 3-way valve b) 2-way valve

Equipment of chilled water system

ChillerCooling TowerFan Coil Unit Air Handling Unit

CHILLER1 air cooled condenser chiller

2-water cooled condenser chiller

COOLING TOWER

factor effecting on cooling tower:

1) Wet bulb temp

2) Cooling tower range

3) Approach

4) Condenser Cooling water Flow Rate

FAN COIL UNIT

AIR HANDING UNIT

Thank YOUFOR YOURAttention