Mechanical System For AL-Rehan Hospital

Supervisor Students

Dr. EYAD ASSAF Muhammad Shalan Muhammad Jitan JehaD Odeha JehaD Zuhd

Objective

The objective of this project is to design Conventional (HVAC) System (Fan coil units with chiller and Boiler ) for AL-Rehan Hospital.

In addition with all recommended mechanical systems that should contain like (potable water, drainage, medical gases and fire fighting) systems.

HVAC

HVAC (heating, Ventilation, and Air conditioning) is the technology of indoor and automotive environmental comfort. HVAC system design is a major sub discipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics, and heat transfer. Also the mechanical systems are to be introduced in our research including potable, drainage, firefighting and medical gases.

Building Description

Location Country: Palestine . City: Ramallah Region: Dahyet Al-Rehan. Elevation: 800 m above sea level. Latitude: 32 N. Wind’s speed in Ramallah is above 5 m/s.

Al-Rehan Hospital consist of tenth floor ,four Basement Floor , Ground Floor and Five Up Floor and each Floor has approximately 1500 m^2

Inside and Outside Design Conditions

Parameter Tin To Tun Tg Φin Φout Win Wout

Winter 22 4.7 13 9.7 50% 70% 8.4 3.9

Summer 24 30 28 29 70% 52% 8.4 13.7

Overall Heat Transfer coefficient,Uoverall

Overall heat transfer coefficient depends on the construction of the unit. To find the overall heat transfer coefficient , the construction was taking in consideration because Uoverall control with the quantity of losses by wall , ceiling , ground , windows and doors.

Uoverall is given by:

U= 1/Rtot R tot = Ri + R + Ro

R= ∑ x/K

External walls construction

composition thickness K(w/m.C) R th

firm stone 0.1 2.2 0.0455

concrete ( light ) 0.1 1.75 0.0571

insulation (polystyrene) 0.03 0.04 0.7500

cement brick(air gap) 0.1 0.72 0.1389

cement plaster 0.02 1.2 0.0167

sum 0.35   1.0082

Ri 0.12 Ro 0.03

Ri = 0.12 m2.C\WRo= 0.03 m2.C\WRtot= Ri+Rw+RoRtot=0.12+1.0082+0.03 =1.18814 (m^2).C/WU=0.8634 W/(m^2).C

Internal walls construction

Material Thickness (m) Thermal conductivity

"K"(W/m.C’’)

Thermal resistance

"R" (m2.C/W)

Plaster 0.02 1.2 0.01666

Block 0.1 0.72 0.13889

Plaster 0.02 1.2 0.01666

Sum 0.14 0.17221

Ri = 0.12 m2.C\WRo= 0.03 m2.C\WRtot= Ri+Rw+RoRtot=0.12+0.17221+0.03 =0.41221 (m^2).C/WU=2.4259 W/(m^2).C

Ceiling Construction

composition thickness K(w/m.c) R th

asphalt 0.02 0.8 0.0250

concrete ( light ) 0.05 1.75 0.0286

insulation (polystyrene) 0.03 0.04 0.7500

concrete ( light ) 0.03 1.75 0.0171

cement brick(air gap) 0.17 0.72 0.2361

cement plaster 0.02 1.2 0.0167

sum 0.32   1.0735

Ri 0.1 Ro 0.02

Ri = 0.12 m2.C\WRo= 0.03 m2.C\WRtot= Ri+Rw+RoRtot=0.12+0.17221+0.03 =0.41221 (m^2).C/WU=2.4259 W/(m^2).C

Windows and Doors

U overall for windows and doors taken directly from energy efficient building code as follow:

Windows double glasses with aluminum material type, wind speed more than 5 m/s

Uwindow = 3.5 W/m2.C. Doors with wood material type without storm

door , wind velocity more than 5 m/s Udoor = 2.4 W/m2.C

Summary

Type Overall heat transfer coefficient (w/m2.k)

External Walls 0.8634

Internal Walls 2.4259

Ceiling 0.83788

Windows 3.5

Doors 2.4

The value of the overall heat transfer coefficient for each element construction

Heating Load Calculation

PROCEDURES

Select inside design condition Temperature, relative humidity(Tin, Φin).

Select outside design condition Temperature, relative humidity(Tout, Φout).

Select unconditioned temperature(Tun). Find over all heat transfer coefficient Uo for wall, ceiling, floor, door,

windows, below grade. Find area of wall, ceiling, floor, door, windows, below grade. Find Qs conduction. Find V inf , V vent . Find Qs, QL vent, inf. Find Q domestic hot water. Find Q boiler.

EQUATIONS Q = U* A* ( Ti - To ) Vvent = n * value of ventilation

Vinf = (ACH * inside volume *1000) /3600

Qs)vent , inf= 1.2 Vvent,inf*(Ti-To)

Ql)vent , inf = 3 Vvent,inf*(Wi-Wo).

Qw = (Mw *cp*(Th – Tc ))/∆t

Unconditioned Temperature In summer

Tun = Ti+2/3*( To - Ti )

Unconditioned Temperature In winter

Tun = Ti+0.5*( Ti - To )

Sample Calculation

Single Room ( 1 ) Specification Area of outside wall = 14 m²Area of unconditioned wall = 32.2 m²Area of window is = 1.8 m²Ceiling area = 18.6 m²

Conduction heat gainQs = U*A*∆TQ.ext = 0.8634*14*17.3 = 209.11548

Watt.Q. un = 2.4259*32.2*8.65 = 675.686 Watt.Q cel. = 0.8379*18.6*17.3 = 278.01

Watt.Qs.cond = Q.ext + Q.un + Q.cilling Qs.cond= 1268.5 Watt.

Ventilation and Infiltration heat gainQ.s.ven =1.2*5*18.6 *17.3 = 1930.068 Watt Q.tot = 1268.5 + 1930 = 3199.18 Watt

Room Qs, cond. (W) Qs, vent. (W) Q tot ( W )

Single Room (1) 1268.500 1930.68 3199.180

Single Room (2) 1031.932 1972.2 3004.132

Single Room (3) 1133.207 2179.8 3313.007

Single Room (4) 1322.810 1951.44 3274.250

Single Room (5) 855.860 1868.4 2724.260

Single Room (6) 1015.360 1837.26 2852.620

Single Room (7) 1025.506 1909.92 2935.426

Single Room (8) 1141.954 1764.6 2906.554

Single Room (9) 1369.834 3217.8 4587.634

Single Room (10) 994.378 1349.4 2343.778

Single Room (11) 979.446 2366.64 3346.086

Double Room(1) 1504.825 2449.68 3954.505

Double Room(2) 1092.185 2460.06 3552.245

Double Room(3) 825.418 2439.3 3264.718

Double Room(4) 828.317 2460.06 3288.377

Double Room(5) 828.317 2460.06 3288.377

Double Room(6) 915.001 2449.68 3364.681

Double Room(7) 1151.699 2003.34 3155.039

Double Room(8) 1411.993 2179.8 3591.793

Double Room(9) 2192.196 2875.26 5067.456

Double Room(10) 1197.415 2875.26 4072.675

Double Room(11) 1197.415 2875.26 4072.675

Double Room(12) 1197.415 2875.26 4072.675

Double Room(13) 1197.415 2875.26 4072.675

Double Room(14) 1197.415 2875.26 4072.675

Double Room(15) 1197.415 2875.26 4072.675

Double Room(16) 1197.415 2875.26 4072.675

Main Carador (1) 11821.867 2179.8 14001.66718

Main Carador (2) 7002.546 9861 16863.54555

Small Corridor 10697.957 11781.3 1083.343404

Doctor Office(1) 1193.740 830.4 2024.139877

Doctor Office (2) 255.751 1557 1301.248564

Lounge 13496.776 1141.8 14638.57615

Lounge (1) 9479.012 11729.4 2250.388031

Male Change 152.639 1671.18 1823.818852

Female Change 1182.815 1245.6 2428.41484

Nurse Station 34.634 1557 1522.36566

Waiting 14371.783 1245.6 15617.38301

Suite Room 6895.487 11418 4522.512811

Clean & Dirty UT. 1080.020 3363.12 2283.099753

Sum 127492.200 2003.34 129495.540

Total Heating Loads

Boiler Selection

Boiler specification

Domestic hot water load 145.03 KW Heating Load 834.4 KW Boiler Capacity = 1077.37 KW   Annual fuel consumption of diesel is

154.86 cubic meter per year .

From Obrien boilers Company Catalogue

we chose

REX K120 F with capacity of 1200 KW

Pump Specification

Pump Selection

Required pump for boiler have the following specification

pump head 149.75PSI . pump flow rate 20.14 L/s.

From WILO catalog we chose NL 50/315-45-2-12-50Hz series .

Expansion Tank

From Wessels Company Catalogue depending on pump flow rate(20.17 L/s) (319.7 GPM )we select TXA 1400

Coaling Load Calculation EQUATIONS For Ceiling: Q=U*A*(CLTD)corr

(CLTD)corr = (CLTD + LM) K + (25.5 – Ti )+ (To – 29.4)

CLTD: cooling load factor K:color factor

K=1 dark color K=0.5 light color

For Walls: Q=U*A*(CLTD)corr

(CLTD)corr =(CLTD + LM) K + (25.5 – Ti )+ (To – 29.4)

K=1 dark color K=0.83 medium color K=0.5 light color

For Glass • Heat transmitted through glass Q=A*(SHG)*(SC)*(CLF)

SHG: solar heat gainSC: shading coefficientCLF: cooling load factor

• Convection heat gain Q=U*A*(CLTD)corr

For people Qs=qs*n*CLF qL=qL*n

Qs,QL: sensible and latent heat gain

qs,qL: sensible and latent gains per person

n: number of people

CLF: cooling load factor

For lighting Qs=W*CLF

W:lighting capacity: (watts)

For equipments Qs=qs*CLF QL=qL

Sample Calculations For Single Room (1)

Area of outside wall = 14 m² Area of unconditioned wall = 32.2 m² Area of window is = 1.8 m² Ceiling area = 18.6 m²

Sensible and latent heat gain for one person from table (A-16). Qs = 71.5 W QL= 57 W

Sensible heat gain Qs in, wall = U x A x (CLTD) correct = 90.58 W

Transmission heat gain (window) = 51.86 W

Convection heat gain = U*A*CLTD.corr = 63.63 W

Convection heat gain U*A*CLTDcorr = 63.63 W

Load from ventilation and infiltration Qs vent/inf = 1.2*Vvent* ∆t = 1.2*75.8*7.4 = 669.6 W QL vent = 3*Vvent*(Wi-Wo) = 3*75.8*6.5 =1478.7 W

Heat load due to people Qs = qs*n*CLF = 70*1*0.84 = 62.3 W Ql = ql*n = 44*1 = 44 W

Heat load due to lighting Qs/l = Aroom*CLF= 279 * 0.85 = 237.15 W

Heat load due to equipment Qs = 522 W QL = 0 W

Total sensible load ∑Qs = 1826.87 W

Total latent load = ∑Ql = 1522.7 W Total load = 3349.3 W

Total heat loss for every room

Room Qs (W) Ql (W) V vent(L/S) total loss (W) Total loss (KW)

single Room (1) 1826.592 1522.700 93 3349.292 3.349292192

single Room (2) 1826.592 1522.700 93 3349.292 3.349292192

single Room (3) 2044.952 1697.600 106 3742.552 3.74255162

single Room (4) 2056.090 1729.400 106 3785.490 3.785489612

single Room (5) 1973.243 1729.400 106 3702.643 3.702643136

single Room (6) 1973.243 1729.400 106 3702.643 3.702643136

single Room (7) 1973.243 1729.400 106 3702.643 3.702643136

single Room (8) 1914.915 1586.300 97 3501.215 3.501215208

single Room (9) 2977.166 2556.200 158 5533.366 5.533365593

single Room (10) 1423.985 1077.500 65 2501.485 2.501485446

single Room (11) 2078.175 1872.500 115 3950.675 3.950674551

Double Room(1) 2495.337 1972.150 118.5 4467.487 4.46748684

Double Room(2) 2180.071 1916.500 115 4096.571 4.096570996

Double Room(3) 2250.171 1996.000 120 4246.171 4.246171331

Double Room(4) 2217.267 1956.250 117.5 4173.517 4.173516713

Double Room(5) 2223.848 1964.200 118 4188.048 4.188047636

Double Room(6) 2239.155 1980.100 119 4219.255 4.219255033

Double Room(7) 1856.390 1646.200 98 3502.590 3.502589527

Double Room(8) 2091.395 1813.150 108.5 3904.545 3.904544581

Double Room(9) 2977.166 2556.200 136.5 5533.366 5.533365593

Double Room(10) 2406.834 2258.350 136.5 4665.184 4.665184295

Double Room(11) 2406.834 2258.350 136.5 4665.184 4.665184295

Double Room(12) 2406.834 2258.350 136.5 4665.184 4.665184295

Double Room(13) 2406.834 2258.350 136.5 4665.184 4.665184295

Double Room(14) 2406.834 2258.350 136.5 4665.184 4.665184295

Double Room(15) 2406.834 2258.350 136.5 4665.184 4.665184295

Double Room(16) 2406.834 2258.350 136.5 4665.184 4.665184295

main carador (1) 8525.349356 8212.5 475 16737.849 16.73784936

main carador (2) 10079.85487 9683.25 567.5 19763.105 19.76310487

small corridor 842.7729144 724 40 1566.773 1.566772914

doctor office(1) 905.9443758 942.35 56.5 1848.294 1.848294376

doctor office (2) 1284.654163 1260.35 76.5 2545.004 2.545004163

lounge 8896.114346 9423.5 565 18319.614 18.31961435

lounge (1) 1426.585152 1367.95 80.5 2794.535 2.794535152

male change 1170.207282 1042 60 2212.207 2.212207282

female change 1483.107832 1280.5 75 2763.608 2.763607832

nurse station 1061.858482 1042 60 2103.858 2.103858482

waiting 10223.29997 9625 550 19848.300 19.84829997

suite room 2850.42717 2619.8 162 5470.227 5.47022717

clean & dirty UT. 1432.41827 1578.35 96.5 3010.768 3.01076827

Sum 79800.756 71924.400 6022 151725.156 151.7251557

FLOOR Q total ( kW ) Mass Flow Rate(L/s)

B4 59.1 2.35645933

B3 71.7 2.858851675

B2 157.16 6.266347687

B1 143.42 5.718500797

GF 172.69 6.885566188

1 130 5.183413078

2 152.89 6.096092504

3 116.2 4.633173844

4 116.2 4.633173844

5 150.7 6.00877193

SUM 1270.06 50.64035088

Chiller Selection

Building Load = 1270.06 kW OR 362.87 T.R

From PETRA Company we select APSa 385 – 3S AC1 50 Hz. with 385 Ton. Refrigeration cooling

load capacity .

Pump Selection

Friction loss = 66.17 PSI Fitting loss = 33.08 PSI Head loss = 50.49 PSI.

Pump head = 149.75 PSI Pump Flow rate = 50.64 L/s

From WILO catalog we select SCP 150/580HA series.

Pressure Tank Selection

From Wessels Company Catalogue depending on Pump flow rate (19.44 L/s) (308 GPM) the suitable pressure tank FXA-1200

Fan Coil Unit

For Single Room (1)

Cooling Load = 3.35 KW V cir. = 465.17 L/s V c.f.m = 1023.34 CFM From Petra Catalogue we select

DCC 20 H/C 4Rows Model

F.C.U # Load (CFM) Model

F.C 1 1023.394837 DCC 20 H/C 4Rows

F.C 2 1023.394837 DCC 20 H/C 4Rows

F.C 3 1143.55744 DCC 20 H/C 4Rows

F.C 4 1156.677381 DCC 20 H/C 4Rows

F.C 5 1131.36318 DCC 20 H/C 4Rows

F.C 6 1131.36318 DCC 20 H/C 4Rows

F.C 7 1131.36318 DCC 20 H/C 4Rows

F.C 8 1069.815758 DCC 20 H/C 4Rows

F.C 9 1690.750598 DCC 20 H/C 4Rows

F.C 10 764.3427753 DCC 8 H/C 4Rows

F.C 11 1207.150557 DCC 20 H/C 4Rows

F.C 12 1365.065423 DCC 20 H/C 4Rows

F.C 13 1251.730027 DCC 20 H/C 4Rows

F.C 14 1297.44124 DCC 20 H/C 4Rows

F.C 15 1275.241218 DCC 20 H/C 4Rows

F.C 16 1279.681222 DCC 20 H/C 4Rows

F.C 17 1289.216816 DCC 20 H/C 4Rows

F.C 10 1070.235689 DCC 20 H/C 4Rows

F.C 19 1193.055289 DCC 20 H/C 4Rows

F.C 20 1690.750598 DCC 20 H/C 4Rows

F.C 21 1425.472979 DCC 20 H/C 4Rows

F.C 22 1425.472979 DCC 20 H/C 4Rows

F.C 23 1425.472979 DCC 20 H/C 4Rows

F.C 24 1425.472979 DCC 20 H/C 4Rows

F.C 25 1425.472979 DCC 20 H/C 4Rows

F.C 26 1425.472979 DCC 20 H/C 4Rows

F.C 27 1425.472979 DCC 20 H/C 4Rows

F.C 28 2557.171429 DCC 30 H/C 4Rows

F.C 29 3019.363244 DCC 30 H/C 4Rows

F.C 30 478.7361683 DCC 6 H/C 4Rows

F.C 31 564.7566148 DCC 6 H/C 4Rows

F.C 32 777.6401609 DCC 8 H/C 4Rows

F.C 33 1865.886646 DCC 20 H/C 4Rows

F.C 34 853.885741 DCC 10 H/C 4Rows

F.C 35 675.9522249 DCC 8 H/C 4Rows

F.C 36 844.4357264 DCC 10 H/C 4Rows

F.C 37 642.8456472 DCC 8 H/C 4Rows

F.C 38 2021.586108 DCC 24 H/C 4Rows

F.C 39 1671.458302 DCC 20 H/C 4Rows

F.C 32 919.9569715 DCC 10 H/C 4Rows

Pipe Sizing ( FCU 1)

Supply Pipe sizing

m = (Qs +Ql.) / (4180*6)

m = (1826.6 +1552.7) / (4180*6) = 0.135 L/s Pressure drop assumption 400 pa/m.

Preferred size at operating condition is 0.75 in

 

SHAFT ( 1 )

F.C.UHeat loss (W) m ( L/s)

Friction Size ( in )

F.C 28 A8368.925

1.69564826 400 2

F.C 124467.487

1.36195908 400 1.5

F.C 13349.292

1.18382962 400 1.5

F.C 134096.571

1.05028527 400 1.5

F.C 23349.292

0.88694512 400 1.25

F.C 144246.171

0.75340078 400 1.25

F.C 33742.552

0.5840957 400 1.25

F.C 154173.517

0.43487115 400 1

F.C 322545.004

0.26846299 400 1

F.C 164188.048

0.16698755 400 0.75

Duct Sizing ( FCU 1)

Qt = 3.35 kw V circulation air = Qt / 1.2 * (Tcir. – Ti) V circulation = 3.35 / (1.2* 10) = 0.465 m3/ s Pressure drop = 0.55 pa / m

velocity = 4.1 m / s A = 0.11 m2

D = 0.385 m High = 0.3 m Width = 0.425 m

F.C.U # Load (CFM) HIGHT A - B B - C C - D D - E E - F F - G G - H H - I

F.C 1 1023.394837 0.3 0.425 0.275 0.2          

F.C 2 1023.394837 0.3 0.425 0.275 0.2          

F.C 3 1143.55744 0.3 0.45 0.325 0.2          

F.C 4 1156.677381 0.3 0.45 0.325 0.2          

F.C 5 1131.36318 0.3 0.45 0.325 0.2          

F.C 6 1131.36318 0.3 0.45 0.325 0.2          

F.C 7 1131.36318 0.3 0.45 0.325 0.2          

F.C 8 1069.815758 0.3 0.425 0.275 0.2          

F.C 9 1690.750598 0.3 0.625 0.5 0.375 0.2        

F.C 10 764.3427753 0.3 0.325 0.2            

F.C 11 1207.150557 0.3 0.475 0.35 0.2          

F.C 12 1365.065423 0.3 0.525 0.4 0.2          

F.C 13 1251.730027 0.3 0.5 0.35 0.2          

F.C 14 1297.44124 0.3 0.5 0.35 0.2          

F.C 15 1275.241218 0.3 0.5 0.35 0.2          

F.C 16 1279.681222 0.3 0.5 0.35 0.2          

F.C 17 1289.216816 0.3 0.5 0.35 0.2          

F.C 10 1070.235689 0.3 0.425 0.275 0.2          

F.C 19 1193.055289 0.3 0.425 0.275 0.2          

F.C 20 1690.750598 0.3 0.625 0.5 0.375 0.2        

F.C 21 1425.472979 0.3 0.55 0.425 0.275 0.2        

F.C 22 1425.472979 0.3 0.55 0.425 0.275 0.2        

F.C 23 1425.472979 0.3 0.55 0.425 0.275 0.2        

F.C 24 1425.472979 0.3 0.55 0.425 0.275 0.2        

F.C 25 1425.472979 0.3 0.55 0.425 0.275 0.2        

F.C 26 1425.472979 0.3 0.55 0.425 0.275 0.2        

F.C 27 1425.472979 0.3 0.55 0.425 0.275 0.2        

F.C 28 2557.171429 0.3 0.875 0.775 0.65 0.525 0.4 0.25 0.2  

F.C 29 3019.363244 0.3 1.025 0.9 0.775 0.65 0.53 0.4 0.28 0.2

F.C 30 478.7361683 0.3 0.225 0.2            

F.C 31 564.7566148 0.3 0.275 0.2            

F.C 32 777.6401609 0.3 0.325 0.2            

F.C 33 1865.886646 0.3 0.675 0.55 0.425 0.3 0.2      

F.C 34 853.885741 0.3 0.35 0.2            

F.C 35 675.9522249 0.3 0.3 0.2            

F.C 36 844.4357264 0.3 0.35 0.2            

F.C 37 642.8456472 0.3 0.3 0.2            

F.C 38 2021.586108 0.3 0.725 0.6 0.475 0.35 0.2      

F.C 39 1671.458302 0.3 0.625 0.5 0.375 0.2        

F.C 32 919.9569715 0.3 0.375 0.2            

Fresh Air Duct

For single room ( 1 ) V.vent. = ( L/S/ Area ) * Area V.vent. = 5 * 18.6 = 93 L/s Pressure drop = 0.55 pa / m

velocity = 3 m / s A = 0.0314 m2

D = 0.2 m High = 0.2 m Width = 0.175 m

SHAFT ( 1 )

SECTION V vent(L/S)PA/M HIGHT WIDTH

A - B 1173.5

0.55 0.3 0.875

B - C 936

0.55 0.3 0.7

C - D 843

0.55 0.3 0.65

D - E 724.5

0.55 0.3 0.575

E - F 609.5

0.55 0.3 0.5

F - G 516.5

0.55 0.3 0.45

G - H 396.5

0.55 0.3 0.35

H - I 290.5

0.55 0.3 0.275

I - J 173

0.55 0.3 0.2

STATIC PRESSURE PA

13.75

Fresh Air Fan Selection

Fan specification Flow rate = 1173.5 L/s Static Pressure = 13.75 pa

From Rosenberg RoVent catalog we select DHAD 355-4 series .

Exhaust Air Duct

V = ( A.C.H *Vin* 1000) / 3600 V = ( 10 * 3.5*3.1*1000 ) / 3600 V = 30 L/s/path. Pressure drop = 0.55 pa / m

velocity = 2 m / s D = 0.136 m High = 0.2 m Width = 0.75 m

SECTION V (L/S)

PA/M HIGHT WIDTH

A - B 210

0.55 0.2 0.325

B - C 180

0.55 0.2 0.3

C - D 150

0.55 0.2 0.25

D - E 120

0.55 0.2 0.225

E - F 90

0.55 0.2 0.175

F - G 60

0.55 0.2 0.125

G - H 30

0.55 0.2 0.75

STATIC PRESSURE PA

13.75

Exhaust Fan Selection

Fan specification Flow rate = 210( L/s ). Static Pressure = 13.75 pa

From Rosenberg RoVent catalog we select DHAD 355-4 series .

Air Handling Unit Selection

For Operation Theaters in the First floor Three O.T have Load of (440.12 CFM). The other have load of (635.86 CFM ).

For Operation Theater in the Second floor Operation Theater load of (530.5 CFM)

For Operation Theaters in the GF floor Operation Theater load of (217.57 CFM)

For Operation Theaters in the B1 floor Operation Theater load of (633.53 CFM)

From PETRA Catalogue the minimum Available AHU Load is 1200 CFM

So we select PAH H C 12 C6 H4 X4

Plumbing System Potable Water

No. of Fixture units is to be calculated to start sizing using special tables for potable design.

For internal network plastic pipes to be used

For external network steel pipes to be used

Sample Calculation

Space Name ( H.W.S ) F.U ( H.W.R ) F.U ( C.W.S ) F.U

SINGLE ROOM (1&2) 12 7.2 22

SINGLE ROOM ( 3 ) 6 3.6 11

SINGLE ROOM (4&5) 12 7.2 22

SINGLE ROOM ( 6 & 7) 12 7.2 22

SINGLE ROOM (9) + DOUBLE ROOM 16 12 7.2 22

SINGLE ROOM (10) + DOUBLE ROOM ( 7 ) 12 7.2 22

DOUBLE ROOM ( 1 & 2 ) 12 7.2 22

DOUBLE ROOM ( 3 & 4 ) 12 7.2 22

DOUBLE ROOM ( 5 & 6 ) + SUITE 18 10.8 33

DOUBLE ROOM ( 8 & 9 ) 12 7.2 22

DOUBLE ROOM ( 10 & 11 ) 12 7.2 22

DOUBLE ROOM ( 12 & 13 ) 12 7.2 22

DOUBLE ROOM ( 14 & 15 ) 12 7.2 22

WAITING AND LUNGE 0 0 1

MAIL CHANGE 16 9.6 26

FEMAIL CHANGE 16 9.6 26

Single Room (11) and Lounge(1) 6 3.6 11

Section ( H.W.S ( L/S ) SIZE (in) ( H.W.S ) ( H.W.R ) ( L/S ) SIZE (in) ( H.W.R )

A - B 1.01 1 0.88 1

B - C 0.68 0.75 0.47 0.5

C - D 1.01 1 0.88 1

D - E 1.01 1 0.88 1

Section ( C.W.S ) ( L/S ) SIZE (in) ( C.W.S )

A - B 1.288 1

B - C 0.965 1

C - D 1.288 1

D - E 1.288 1

Riser ( 1 ) MAIN LINE Size ( in )

ITEM TOTAL FIXTURE Flow Rate ( L/s ) SIZE ( in)

Cold Water System 77 2.357 1.25

Hot Water System 42 1.724 1.25

Hot Water System Return 25.2 1.38 1

FLOOR CWS ( F.U ) HWS ( F.U )

B4 21.5 16.5

B3 93 43

B2 108 48

B1 36.25 12.25

GF 172 21

1 133.5 43.5

2 197 57

3 350 194

4 350 194

5 350 194

SUM ( F.U ) 1811.25 823.25

FLOW RATE ( L/s ) 19.438 11.5665

SIZE ( IN ) 4 3.5

TANK SIZE 2.33256 1.38798

     

Pump Specification    

Residual Pressure ( PSI ) 5 5

Friction ( PSI ) 17.64705882 17.64705882

Fitting ( PSI ) 8.823529412 8.823529412

Head ( PSI ) 5.049264706 5.049264706

Total Head ( PSI ) 26.42132353 26.42132353

Flow Rate (L/S ) 19.438 11.5665

Pump Selection

Cold Water Pump have the following specification :

Flow rate 19.438 L/s Pump Head 26.42 PSI

From WILO Catalog we chose NL 50/160-5.5-2-12-50Hz series.

Tank size 2.33256 Cubic meter for two operating hour per day .

Hot Water Pump have the following specification :

Flow rate 11.5665 ( L/s ) Pump Head 26.42 ( PSI ).

From WILO Catalog we chose BAC 70/135-3/2-Rseries.

Tank size 1.38798 Cubic meter for two

operating hour per day .

Pressure Tank Selection

From Wessels Company Catalogue depending on Pump flow rate (11.56 L/s) (183.2 GPM) we select TXA 800 .

Expansion Tank Selection

From Wessels Company Catalogue depending on Pump flow rate (19.44 L/s) (308 GPM) we select FXA-1200-WG.

Drainage System

Number of fixtures is to be determined to start sizing for the stacks and horizontal branches using special tables

ITEM SIZE ( IN ) FIXTURE UNIT

BATHTUB 1.5 2

FLOOR DRAIN ( 4 ) 4 6

LAVATORY 1.25 1

Water Closet ( Tank Type ) 4 4

Space Name Gray Water F.UGray Water

STACK Size Black Water

(W.C) F.UBlack Water (W.C)

STACK Size

SINGLE ROOM (1&2) 24 4 8 4

SINGLE ROOM ( 3 ) 15 3 4 4

SINGLE ROOM (4&5) 18 3 8 4

SINGLE ROOM ( 6 & 7) 18 3 8 4

SINGLE ROOM (9) + DOUBLE ROOM 16 24 4 8 4

SINGLE ROOM (10) + DOUBLE ROOM ( 7 ) 18 3 8 4

DOUBLE ROOM ( 1 & 2 ) 18 3 8 4

DOUBLE ROOM ( 3 & 4 ) 18 3 8 4

DOUBLE ROOM ( 5 & 6 ) + SUITE 27 4 12 4

DOUBLE ROOM ( 8 & 9 ) 24 4 8 4

DOUBLE ROOM ( 10 & 11 ) 18 3 8 4

DOUBLE ROOM ( 12 & 13 ) 24 4 8 4

DOUBLE ROOM ( 14 & 15 ) 18 3 8 4

WAITING AND LUNGE 24 4 0 0

MAIL & Female CHANGE & Single Room (11) & Lounge(1) 81 4 20 4

TOTAL FIXTURE 369   124  

FLOOR SHAFT 1 ( F.U ) SHAFT 2 ( F.U ) SHAFT 3 ( F.U ) SHAFT 4 ( FU )

B4 0 0 0 0

B3 12 112 66 36

B2 48 0 123 83

B1 52 18 36 0

GF 30 18 88 52

1 90 97 0 0

2 70 88 0 0

3 129 89 0 110

4 129 89 191 110

5 129 89 191 110

SUM 689 600 695 501

STA CK SIZE ( IN ) 5 5 5 5

BUILDING DRAIN BETWEEN STAK FU SIZE

SHAFT 4 & 3 501 6

SHAFT 3 & 2 1196 8

SHAFT 2 & 1 1796 10

DRAIN 2485 10

Fire Fighting System

Landing Valve and Cabinet

• landing valve 2 ½ “ (NFPA code)• cabinet 1 ½ “ (NFPA code)

Sprinklers system with heat and smoke detectors .

Landing Valve and Cabinet

Pipe Size ( in ) Flow Rate ( GPM ) Pressure Drop ( PSI/ft ) Path ( ft ) Pressure Drop ( PSI )

4 1000 0.2 32.8 6.56

4 750 0.1 82.984 8.2984

4 500 0.05 318.488 15.9244

2.5 250 0.15 29.52 4.428

Pump Selection   Residual Pressure ( PSI ) 100

Flow Rate ( G.p.m ) 1000 head ( PSI ) 50.49264706

Head ( PSI ) 213.8720871 Friction ( PSI ) 35.2108

Flow Rate ( L/S ) 54.66666667 Fitting ( PSI ) 28.16864

head ( Kpa ) 1473.826015 Total ( PSI ) 213.8720871

Pump Selection

Pump flow rate 1000 GPM. Pump head 213.87 PSI

For electric and diesel pump we select from WILO Company ( NPG 100-315A-110/2 ) series.

For Jockey Pump have the following specification Jockey flow rate 100GPM. Jockey head 213.87 PSI. From WILO Company we select TWI 6.18-22-B

series .

Pressure Tank Selection

From Wessels Company Catalogue depending on Pump flow rate (1000GPM) we select FXA-4000.

Tank Volume

Tank Volume = ( 1000*3.78*60)/1000 = 226.8 (Cubic meter ).

tank sets beside the building .

Sprinklers

Combustible Ceiling Covered Area Maximum Distance( m )

Light Hazardous 21 4.6

Residual Pressure( PSI ) Flow Rate ( gpm ) Duration Time ( s )

15 15 60

NO. Sprinklers Pipe Size ( in )

2 1

3 1.25

5 1.5

10 2

20 2.5

40 3

65 3.5

100 4

160 5

275 6

NO. Sprinklers Pipe Size ( in ) Q ( gpm) Pressure Drop ( PSI/ft ) Path (ft) Pressure Drop ( PSI)

1 1 15 0.107 20.664 309.96

3 1.25 45 0.022 14.76 664.2

4 1.5 60 0.173 2.624 157.44

10 2 150 0.279 9.184 1377.6

11 2.5 165 0.142 7.216 1190.64

14 2.5 210 0.2 7.544 1584.24

17 2.5 255 0.316 5.248 1338.24

20 2.5 300 0.427 4.264 1279.2

21 3 315 0.161 4.264 1343.16

36 3 540 0.33 37.72 20368.8

39 3 585 0.35 3.28 1918.8

45 3.5 675 0.37 5.576 3763.8

51 3.5 765 0.4 21.484 16435.26

78 4 1170 0.25 114.8 134316

Pump Selection   Residual Pressure ( PSI ) 15

Flow Rate ( gpm ) 1170 head ( PSI ) 50.49264706

head ( PSI ) 200.3978663 Friction ( PSI ) 74.947344

Flow Rate (L/S ) 63.96 Fitting ( PSI ) 59.9578752

head ( Kpa ) 1380.973051 Total ( PSI ) 200.3978663

Medical Gases

Medical gases systems in hospitals, are essential for supplying piped oxygen, nitrous oxide, nitrogen, carbon dioxide and medical air to various parts of the hospital.

These systems are usually highly monitored by various computerized alarm systems.

Pipe Sizing

Oxygen. Medical Air. Medical Vaccum.

For shaft 2

Medical Gas Type Medical Air Medical Vaccum Oxygen

Typical outlet Flow 1 SCFM 1 SCFM 1 SCFM

Allowable Pressure Loss 60 Psig 25 mmHg = 0.5 Psig 60 Psig

Number Of Outlet 12 12 12

Longest Path ( m ) 55.4 55.4 55.4

Equivelent Length ( ft/100 ) 2.73568 2.73568 2.73568

Pressure drop ( Psi / 100 ft ) 1.8344 0.18344 1.8344

Oxygen Medical Air Pipe sizing.

section Number Of Outlet Diversity factor ( % ) Effective SCFM Effective SCFM Size ( in )

A - B 1 100 1 1 0.5

B - C 2 100 1 1 0.5

C - D 3 100 1 1 0.5

D - E 4 75 3 3 0.5

E - F 5 75 3.75 4 0.5

F - G 6 75 4.5 5 0.5

G - H 7 75 5.25 6 0.5

H - I 8 75 6 6 0.5

I - J 9 75 6.75 7 0.5

J - K 10 75 7.5 8 0.5

K - L 11 75 8.25 9 0.5

L - M 12 75 9 9 0.5

M - N 13 33 4.29 5 0.5

N -O 14 33 4.62 5 0.5

O - P 15 33 4.95 5 0.5

P - Q 16 33 5.28 6 0.5

Q - S 17 33 5.61 6 0.5

S - T 18 33 5.94 6 0.5

T - U 19 33 6.27 7 0.5

U - V 38 33 12.54 13 0.75

V - W 57 33 18.81 19 0.75

Medical Vaccum Pipe sizing

section Number Of Outlet Diversity factor ( % ) Effective SCFM Effective SCFM Size ( in )

A - B 1 100 1 1 0.75

B - C 2 100 1 1 0.75

C - D 3 100 1 1 0.75

D - E 4 75 3 3 0.75

E - F 5 75 3.75 4 0.75

F - G 6 75 4.5 5 0.75

G - H 7 75 5.25 6 1

H - I 8 75 6 6 1

I - J 9 75 6.75 7 1

J - K 10 75 7.5 8 1

K - L 11 75 8.25 9 1

L - M 12 75 9 9 1

M - N 13 33 4.29 5 0.75

N -O 14 33 4.62 5 0.75

O - P 15 33 4.95 5 0.75

P - Q 16 33 5.28 6 1

Q - S 17 33 5.61 6 1

S - T 18 33 5.94 6 1

T - U 19 33 6.27 7 1

U - V 38 33 12.54 13 1

V - W 57 33 18.81 19 1.25

Elevator

Selection Criteria

Type Speed Size High Quantity Applications

Elevator Selection

We use the stander size , speed and quantity that used in the hospital From MRL Passenger Lift Range Company with Speed of 1m/s .

load Entrance layout

Internal Shaft Diminution Door Type Doors Opining (at a height 2000mm)

PIT Headroom

Kg/person Width(mm)

Depth(mm)

Width(mm)

Depth(mm) Height(mm)

1600/21 Through()

2400 2850 2PSO automatic

1100 1300 3600

load Entrance layout

Internal Shaft Diminution Door Type Doors Opining (at a height 2000mm)

PIT Headroom

Kg/person Width(mm)

Depth(mm)

Width(mm)

Depth(mm) Height(mm)

800/ 10 Single 1750 2050 2PSO automatic

900 1200 3450

Sizing For Patients (bed)Elevator

Sizing For Passenger Elevator

Thank YOU