Trane UH-SVX01A-EN manual Steam Calculations and Correction Factors P Style

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Steam Performance Data

Table 26. STEAM CALCULATIONS AND CORRECTION FACTORS P STYLE

 

 

EXAMPLE:

 

 

UNIT SIZE __________ 042

 

 

Steam Pressure _____10 PSI

 

 

Entering Air Temp. ____ 40°F

 

 

 

I. CAPACITY

Read output directly from Table 24: 41,300 BTU/

 

A. For 2 lbs. steam, 60° entering air

HR.

 

 

 

B. For higher steam pressures and/or E.A.T.'s above Multiply output from Table 24 by appropriate

41,300 x 1.27 = 52,451 BTU/HR.

or below 60°F

correction factor from Table 27.

 

 

 

 

II. FINAL AIR TEMPERATURE

Read temperature directly from Table 24: 124°F.

 

A. For 2 lbs. steam, 60° entering air

 

 

B. For capacities calculated in I.B. (above)

Output from I.B./1.085 x CFM from Table 24 +

52,451/1.085 x 595 + 40 = 121.0°F

E.A.T. = Final Air Temp

 

III. FINAL AIR VOLUME

460 + Final Air Temp from Table 24 530 x Nom.

460

+ 124/530 x 595 = 655 CFM

A. For 2 lbs. steam, 60° entering air

CFM from Table 24 = Final Air Volume

 

 

 

 

 

 

B. For final air temperatures calculated In II. B.

460 + Final Air Temp from II.B./530 x Nom. CFM

460

+ 121.0/530 x 595 = 652 CFM

(above)

from Table 24 = Final Air Volume

 

 

 

 

 

 

IV. CONDENSATE PER HOUR

Read lbs. per hour from Table 24: 43 LBS./HR.

 

 

A. For 2 lbs. steam, 60° entering air

 

 

 

B. For capacities calculated in I.B. (above)

Output from I.B./Latent Heat From Table 28 = lbs. 52,451/953 = 55.0 LBS./HR. per hour of condensate

Table 27. STEAM CORRECTION FACTORS BASED ON 2 LBS. STEAM 60° E.A.T.

ENTERING

 

 

 

STEAM PRESSURE - LBS. PER SQ. IN. (SATURATED)

 

 

 

 

 

 

 

 

 

 

 

 

AIR TEMP

0

2

5

10

15

20

30

40

50

75

°F (°C)

(.0)

(13.8)

(34.5)

(68.9)

(103.4)

(137.9)

(206.8)

(275.8)

(344.7)

(517.1)

 

 

 

 

 

 

 

 

 

 

 

30° (-1°)

1.18

1.22

1.27

1.34

1.40

1.45

1.53

1.61

1.67

1.79

 

 

 

 

 

 

 

 

 

 

 

40° (4°)

1.11

1.15

1.20

1.27

1.32

1.37

1.46

1.53

1.59

1.71

 

 

 

 

 

 

 

 

 

 

 

50° (10°)

1.03

1.07

1.12

1.19

1.25

1.30

1.39

1.46

1.52

1.64

 

 

 

 

 

 

 

 

 

 

 

60° (16°)

0.96

1.00

1.05

1.12

1.18

1.23

1.32

1.39

1.45

1.57

 

 

 

 

 

 

 

 

 

 

 

70° (21°)

0.90

0.93

0.98

1.05

1.11

1.16

1.25

1.32

1.38

1.49

 

 

 

 

 

 

 

 

 

 

 

80° (27°)

0.83

0.86

0.91

0.98

1.04

1.09

1.18

1.25

1.31

1.42

 

 

 

 

 

 

 

 

 

 

 

90° (32°)

0.76

0.80

0.85

0.91

0.97

1.02

1.11

1.18

1.24

1.36

 

 

 

 

 

 

 

 

 

 

 

100° (38°)

0.69

0.73

0.78

0.85

0.90

0.96

1.04

1.11

1.17

1.29

 

 

 

 

 

 

 

 

 

 

 

Table 28. PROPERTIES OF SATURATED STEAM

STEAM PRESSURE IN LBS. PER SQUARE INCH GAUGE

 

0 (.0)

2 (13.8)

5 (34.5)

10 (68.9)

15 (103.4)

20 (137.9)

30 (206.8)

40 (275.8)

50 (344.7)

75 (517.1)

 

 

 

 

 

 

 

 

 

 

 

Steam Temperature-°F (°C)

212.0

218.5

227.1

239.4

249.8

258.8

274.0

286.7

297.7

319.9

 

(100.0)

(103.6)

(108.4)

(115.2)

(121.0)

(126.0)

(134.4)

(141.5)

(147.6)

(159.9)

 

 

 

 

 

 

 

 

 

 

 

Latent Heat of Steam-Btu/

970

966

961

953

946

940

929

920

912

891

lbm (KJ/Kg)

(2256)

(2247)

(2235)

(2217)

(2200)

(2186)

(2161)

(2140)

(2121)

(2072)

 

 

 

 

 

 

 

 

 

 

 

Note: Ratings apply only to free inlet and discharge without diffusers.

Note: All motors are constant speed and operate at top speed as indicated in motor data. Models 42 through 102 can be run at reduced speed with addition of optional variable speed switch. This switch is factory-calibrated for low and high speed ratings, with intermediate speeds in?nitely controllable. Models 166 through 720 operate at constant speed as indicated in motor data.

Note: For specific motor data refer to motor specifications in Table 16 and Table 17.

Note: To correct for entering air temperatures, use 1° temperature rise for each foot in mounting height. As an example, 60° air is r equired at work area (5 ft. above ?oor) units are to be mounted at (20 ft.) above floor. Mounting height (20 ft.) minus work height (5 ft.) equals differential (15 ft.) or, 15° rise in air temperature at unit air inlet. Correct for actual inlet air temperature of 75° (60° + 15° = 75° E.A.T.) on Table 6.

UH-SVX01A-EN

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Contents Unit Heaters Hazard Identification Preface and Warnings and CautionsContents Service Model Number Description Model Number DescriptionDescription Digit 8-VOLTAGE Model Number DescriptionModel Maximum Mounting HT Approx. Max LocationThrow ft m 300 360Four Point Suspension-Shelf Mounted Motors Only LocationForced HOT Water Forced HOT Water High Pressure Steam LOW Pressure Steam Gravity LOW Pressure Vapor or Vacuum Periodic Service Heavy Objects InstallationLifting/Suspension Methods Structural IntegrityUnit Size Steam Pressure PSI Installation17.5 = Low Speed = Low output model with all air ports openSteam Pressure PSI Unit Size Maximum SpreadModel No Spread ft mFt m Diffuser Cone See a See B Standard Low Output ModelTemperature Temperature SteamWater PressurePiping Installation Unit Mounting Heavy Objects Installation S TypeLouver Cone Diffuser Fan Guard/Louver InstallationVertical Unit with Osha Fan Guard Vertical Unit with Louver Cone DiffuserDimensional Data P Model Dimensional DataModels Unit Capacity MBH Fan Dia MinModels Roughing in Dimensional Data Model Size Dimensional DataUnit Capacity Fan MBHInches Dimensional Data S ModelNO. NOM. FAN DIAM. inches Ship WT. lbsHeader Type Models 18 thru NOM FAN Approx Diam Ship Header ModelsTechnical Data S Models Technical DataCorrections When Using Glycol Solution in System Approximate factors at varying altitudesTechnical Data Technical Data P ModelCategory of Area Sound Rating Options S Models OptionsOptions Options P ModelsVertical Louver Cone Diffuser optional Electrical Connections Thermostat Wiring and LocationElectrical Connections P Model Hazardous Voltage OperationFan Motor Connections Low Voltage CCW Internal Marathon Electrical ConnectionsSpeed Controller with Manual Starting Switch Wiring Installation P ModelElectrical Connections S Model Hazardous Voltage Manual Control with Three Phase MotorWiring Installation S Model Electrical Connections Motor Data P Models Voltage Selections Motor DataStandard Totally Enclosed Motor Type MT=1 AMP MCA MOP RPMExplosion Proof with Thermal Overload Motor Type MT=2 Motor DataUnit Model 1145Explosion Proof with Thermal Overload Motor Type Totally Enclosed Motor TypeModel S Header Type Only Steam Performance DataOutput BTUSteam Calculations and Correction Factors Steam Performance DataModel P Standard Units Properties of Saturated SteamSteam Pressure in Psig kPa Kg/hr Sq. m037 Low Output Standard Vertical Units with All Air Ports OpenSteam Correction Factors Based on 2 LBS. Steam 60 E.A.T Steam Calculations and Correction Factors P StyleEntering Steam Pressure LBS. PER SQ. IN. Saturated AIR Temp 13.8 34.5 68.9 103.4 137.9 206.8 275.8 344.7 517.1Model S Serpentine and Header Type Hot Water Performance DataBTU/HR CFM FPMHot Water Calculations and Correction Factors S Type Hot Water Performance DataIV. Capacity AT Other Rates Water FlowMinimum Water Flow Entering Entering Water Temperature F C AIRHeating Capacity Factors for Various Rates of Water Flow TemperatCFM Type Standard Output Units117.6 24.24 108.8 34.5 529 318 42.7 152.2 376 72011,000 2250 237 1165 133 11.430 470.9 32.35 138.0 041Hot Water Performance Data Capacity @ 20 TD HOT Water Calculations and Correction Factor P StyleII. Capacity AT Other TDs IV. Pressure Loss AT Other TDs10 6 15 8 20 Minimum Water Flow GPMPeriodic Service Hazardous Voltage MaintenanceCleaning the Unit Rotating ComponentsFan and Motor Assembly MaintenanceTroubleshooting Guide Additional P Model InstructionsWarranty Info Limited Warranty S ModelLimited Warranty P Model Warranty Info Page Trane

UH-SVX01A-EN specifications

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