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PEMEX REFINACION HVAC Load Analysis for

REFINERIA ING. ANTONIO M. AMOR SUBESTACION ELECTRICA SE-EC-04

Prepared By:

CORPORACION IPSA S.A DE C.V J.A.A. G.N.L.O. Agosto 2015

Chvac - Full Commercial HVAC Loads Calculation Program Pimaarc Cuajimalpa de Morelos, DF 05410

Elite Software Development, Inc. PEMEX REFINACION Page 2

General Project Data Input General Project Information Project file name: Project title: Project date: Weather reference city: Client name: Client address: Company name: Company address: Company city: Company e-mail address: Company website:

CC SALAMANCA EC-04 AGO 2015 2.CH8 PEMEX REFINACION Agosto 2015 SALAMANCA, GUANAJUATO, MEXICO REFINERIA ING. ANTONIO M. AMOR SUBESTACION ELECTRICA SE-EC-04 CORPORACION IPSA S.A DE C.V J.A.A. G.N.L.O. [email protected] http://www.corporacionipsa.mx/

Barometric pressure: Altitude: Latitude: Mean daily temperature range: Starting & ending time for HVAC load calculations: Number of unique rooms in this project:

24.303 5643 21 19 1am - 12am 1

in.Hg. feet Degrees Degrees

Building Default Values Calculations performed: Lighting requirements: Equipment requirements: People sensible load multiplier: People latent load multiplier: Room sensible safety factor: Room latent safety factor: Room heating safety factor: People diversity factor: Lighting profile number: Equipment profile number: People profile number: Building default ceiling height: Building default wall height:

Cooling loads only 2.00 0.00 250 200 10 10 0 100 10 10 2 14.14 14.14

Watts per square foot Watts per square foot Btuh per person Btuh per person % % % %

feet feet

Internal Operating Load Profiles (C = 100) 1 2 3 4 5 6 7 8 9 10

hr 1 C C C C C C C C C C


























General Project Data Input (cont'd) Building-Level Design Conditions Design Month

Outdoor Dry Bulb

August Winter

93 10

Outdoor Wet Bulb 70

Indoor Rel.Hum

Indoor Dry Bulb

Grains Diff

In/Outdoor Correction

50%

75 75

17.67

2

Master Roofs Roof No. 1

ASHRAE Roof#

Roof U-Fac

Dark Color

Susp. Ceil

6

0.641

No

No

ASHRAE Group

Wall U-Fac

Wall Color

E

0.543

M

Master Walls Wall No. 1



Air Handler Input Air Handler Number 1 Input Data Name: Terminal type: Method for CV Supply fan type: Calculations performed: Excess supply air: Occurrences: People profile number: Lighting profile number: Equipment profile number: Exhaust may not exceed supply air: Leaving heating coil CFM: Leaving cooling coil temp (deg.F): Cooling coil CFM Misc. Btuh gain - supply side: Misc. Btuh gain - return side: Combined fan & motor efficiency: Static pressure across fan (in.wg.): Summer supply duct temp rise (deg.F): Summer return duct temp rise (deg.F): Winter supply duct temp drop (deg.F): Winter return duct temp drop (deg.F): Chilled water temp difference (deg.F): Hot water temp difference (deg.F): Cooling ventilation: Cooling infiltration: Heating ventilation: Heating infiltration: Pretreated outside air: Pretreated air Summer DB (deg.F): Pretreated air Summer WB (deg.F): Pretreated air Winter DB (deg.F):

Design Month

Outdoor Dry Bulb

August Winter

93 10

Uma 101/101r Constant Volume Sum of Peaks Draw-thru fan Cooling loads only Reheat 1 0 0 0 No 0.0 55.0 0 0 0 85 2.00 1.000 0.750 2.000 1.000 0.000 0.000 551 Direct 0 Direct 0 AC/Hr 0 AC/Hr none 0 0 0

Outdoor Wet Bulb 70

Indoor Rel.Hum

Indoor Dry Bulb

Grains Diff

In/Outdoor Correction

50%

75 75

17.67

2



Room Input Room 1: Cuarto De Tableros Electricos (1170.534 sq.ft) (Zone 1) Air Handler number: Room length: (feet) Lighting Watts: Number of people in room: Lighting profile number: Ceiling height (feet): Sensible safety factor (%): Sensible heat per person (Btuh): Cooling ventilation method: Cooling infiltration method: Heating ventilation method: Heating infiltration method: Winter exhaust air CFM: Minimum supply CFM: Ceil. exposed to plenum (sq.ft): Cooling loads only are calculated for this room. Roof 1 Wall 1 2 3 4

1 45.44 1,152 2 10 14.14 10 250 Direct Direct AC/Hr Direct 0 0 1

Room occurrences: Room width (feet): Equipment Watts: People profile number: Equipment profile number: Heating safety factor (%): Latent safety factor (%): Latent heat per person (Btuh): Cooling ventilation value: Cooling infiltration value: Heating ventilation value: Heating infiltration value: Summer exhaust air CFM: Latent Btuh equipment load: Exposed floor slab perimeter (ft):

1 25.76 16,764 2 10 0 10 475 551.000 35.000 0.000 35.000 0 667 0

Type

ASHRAE#

U-Factor

Dark

Length

Width

Area

Susp.Ceil

1

6

0.641

No

1.00

1,177.10

1,177.1

No

Type

ASHRAE#

U-Factor

Color

Height

Width

Area

Direction

1 1 1 1

E E E E

0.543 0.543 0.543 0.543

M M M M

13.18 13.18 14.14 14.14

45.44 45.44 25.76 25.76

598.9 598.9 364.2 364.2

N S E W



Building Envelope Report Envelope Report Using Summer U-Factors Material Types

Gross Area

Glass Area

Net Area

-UFactor

Area x U-Factor

Average U-Factor

Roof Tot.Roof

1

1,177.1 1,177.1

0.0 0.0

1,177.1 1,177.1

0.641 N/A

754.521 754.521

0.641 0.641

Wall Tot.Wall

1

1,926.3 1,926.3

0.0 0.0

1,926.3 1,926.3

0.543 N/A

1,045.976 1,045.976

0.543 0.543

1,800.497

0.580

Totals

3,103.4

Wall Direction

Wall Area

Glass Area

Wall Net Area

Wall Avg U-Factor

Glass Avg U-Factor

N NE E SE S SW W NW

598.9 0.0 364.2 0.0 598.9 0.0 364.2 0.0

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

598.9 0.0 364.2 0.0 598.9 0.0 364.2 0.0

0.543 0.000 0.543 0.000 0.543 0.000 0.543 0.000

0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000

0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000

1,926.3

0.0

1,926.3

0.543

0.000

0.000

Totals

Glass Avg Shd.Coef



Building Summary Loads Building peaks in August at 5pm.

Bldg Load Descriptions Roof Wall Glass Floor Slab

Area Quan

Sen Loss

%Tot Loss

Lat Gain

Sen Gain

Net Gain

%Net Gain

1,177 1,926 0 0

0 0 0 0

0.00 0.00 0.00 0.00

0 0 0 0

27,140 28,084 0 0

27,140 28,084 0 0

10.84 11.22 0.00 0.00

0

0.00

0

55,224

55,224

22.06

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

0 1,467 0 1,045 0 0 0 6,851 0 441 0 0 0 0 0 0 0 0 0

4,324 142,882 0 550 0 0 0 7,877 0 561 0 9,667 0 0 0 11,318 8,120 0 0

4,324 144,349 0 1,595 0 0 0 14,728 0 1,002 0 9,667 0 0 0 11,318 8,120 0 0

1.73 57.66 0.00 0.64 0.00 0.00 0.00 5.88 0.00 0.40 0.00 3.86 0.00 0.00 0.00 4.52 3.24 0.00 0.00

0

0.00

9,804

240,522

250,326

100.00

Skin Loads Lighting Equipment Pool Latent People Partition Cool. Pret. Heat. Pret. Cool. Vent. Heat. Vent. Cool. Infil. Heat. Infil. Draw-Thru Fan Blow-Thru Fan Reserve Cap. Reheat Cap. Supply Duct Return Duct Misc. Supply Misc. Return

1,152 16,764 0 2 0 0 0 551 0 35 0 0 0 0 0 0 0 0 0

Building Totals

Building Summary

Sen Loss

%Tot Loss

Lat Gain

Sen Gain

Net Gain

%Net Gain

Ventilation Infiltration Pretreated Air Room Loads Plenum Loads Fan/Duct/Misc Loads

0 0 0 0 0 0

0.00 0.00 0.00 0.00 0.00 0.00

6,851 441 0 2,512 0 0

7,877 561 0 202,979 0 29,105

14,728 1,002 0 205,492 0 29,105

5.88 0.40 0.00 82.09 0.00 11.63

Building Totals

0

0.00

9,804

240,522

250,326

100.00

Check Figures Total Building Supply Air (based on a 20° TD): Total Building Vent. Air (4.35% of Supply): Total Conditioned Air Space: Supply Air Per Unit Area: Area Per Cooling Capacity: Cooling Capacity Per Area: Heating Capacity Per Area: Total Heating Required With Outside Air: Total Cooling Required With Outside Air:

12,668 CFM 551 CFM 1,171 10.8223 56.1 0.0178 0.00

Sq.ft CFM/Sq.ft Sq.ft/Ton Tons/Sq.ft Btuh/Sq.ft

0 Btuh 20.86 Tons



Air Handler #1 - Uma 101/101r - Summary Loads Rm No

Description Room Peak Time

1

Cuarto De Tableros Electricos 6pm August Room Peak Totals: Total Rooms: 1 Unique Rooms: 1

Area People Volume

Htg.Loss Htg.CFM CFM/Sqft

Sen.Gain Clg.CFM CFM/Sqft

Lat.Gain S.Exh W.Exh

Htg.O.A. Req.CFM Act.CFM

Clg.O.A. Req.CFM Act.CFM

1,171 2 16,551

0 0 0.00

205,382 12,668 10.82

2,899 0 0

None 0 0

Direct 551 551

1,171 2 16,551

0 0 0.00

205,382 12,668 10.82

2,899 0 0

0 0

551 551



Air Handler #1 - Uma 101/101r - Total Load Summary Air Handler Description: Supply Air Fan: Fan Input: Sensible Heat Ratio:

Uma 101/101r Constant Volume - Sum of Peaks Draw-Thru with program estim ated horsepower of 4.69 HP 85% motor and fan efficiency with 2 in. water across the fan 0.99 --- This system occurs 1 time(s) in the building. ---

Air System Peak Time: Outdoor Conditions: Indoor Conditions:

5pm in August. Clg: 91° DB, 70° WB, 100.61 grains Clg: 75° DB, 50% RH

Summer: Ventilation controls outside air, ----- Winter: Exhaust controls outside air. Room Space sensible loss: Infiltration sensible loss: Outside Air sensible loss: Supply Duct sensible loss: Return Duct sensible loss: Return Plenum sensible loss: Total System sensible loss:

0 0 0 0 0 0

Btuh Btuh Btuh Btuh Btuh Btuh

0 CFM 0 CFM

0 Btuh

Heating Supply Air: 0 / (.812 X 1.08 X 0) = Winter Vent Outside Air (0.0% of supply) =

0 CFM 0 CFM

Room space sensible gain: 202,979 Infiltration sensible gain: 561 Draw-thru fan sensible gain: 9,667 Supply duct sensible gain: 11,318 Reheat sensible gain: 0 Total sensible gain on supply side of coil:

Btuh Btuh Btuh Btuh Btuh

Cooling Supply Air: 226,367 / (.812 X 1.1 X 20) = Summer Vent Outside Air (4.3% of supply) = Return duct sensible gain: 8,120 Btuh Return plenum sensible gain: 0 Btuh Outside air sensible gain: 7,877 Btuh Blow-thru fan sensible gain: 0 Btuh Total sensible gain on return side of coil: Total sensible gain on air handling system: Room space latent gain: Infiltration latent gain: Outside air latent gain: Total latent gain on air handling system: Total system sensible and latent gain:

224,526 Btuh 12,668 CFM 551 CFM

551 CFM 15,996 Btuh 240,522 Btuh

2,512 Btuh 441 Btuh 6,851 Btuh 9,804 Btuh 250,326 Btuh

Check Figures Total Air Handler Supply Air (based on a 20° TD): Total Air Handler Vent. Air (4.35% of Supply): Total Conditioned Air Space: Supply Air Per Unit Area: Area Per Cooling Capacity: Cooling Capacity Per Area: Heating Capacity Per Area: Total Heating Required With Outside Air: Total Cooling Required With Outside Air:

12,668 CFM 551 CFM 1,171 10.8223 56.1 0.0178 0.00

Sq.ft CFM/Sq.ft Sq.ft/Ton Tons/Sq.ft Btuh/Sq.ft

0 Btuh 20.86 Tons



Zone Detailed Loads (At Zone Peak Times) Load Description

Unit Quan

-SCCFAC

CLTD SHGF

U.Fac -CLF-

Sen. Gain

Lat. Gain

Htg. Mult.

Htg. Loss

Room 1-Cuarto De Tableros Electricos - Air Handler 1 (Uma 101/101r), Zone 1 peaks (sensible) in August at 6pm. Roof-1-6-No.Clg-L Wall-1-N-E-M Wall-2-S-E-M Wall-3-E-E-M Wall-4-W-E-M Lights-Prof=10 Equipment-Prof=10 People-Prof=2 Cool. Infil.Direct CFM Heat. Infil.Direct CFM Sub-total Safety factors: Total w/ safety factors:

1,177 599 599 364 364 1,152 16,764 2.0 35 0

0.50 0.83 0.83 0.83 0.83 1.000 1.000 1.000

33.7 17.0 25.7 27.4 36.6

0.641 0.543 0.543 0.543 0.543

25,427 5,513 8,347 5,425 7,231 3,931 129,893 500 444 186,711 +10% --------205,382

41.665 35.295 35.295 35.295 35.295

49,044 21,138 21,138 12,856 12,856

0.000

0

1,334 950 351 2,635 +10% --------2,899

0 +0% --------0



Room Detailed Loads (At Room Peak Times) Load Description

Unit Quan

-SCCFAC

CLTD SHGF

U.Fac -CLF-

Sen. Gain

Lat. Gain

Htg. Mult.

Htg. Loss

Room 1-Cuarto De Tableros Electricos peaks (sensible) in August at 6pm, Air Handler 1 (Uma 101/101r), Zone 1, 45.4 x 25.8, Construction Type: 24 (Heavy) Roof-1-6-No.Clg-L Wall-1-N-E-M Wall-2-S-E-M Wall-3-E-E-M Wall-4-W-E-M Lights-Prof=10 Equipment-Prof=10 People-Prof=2 Cool. Infil.Direct CFM Heat. Infil.Direct CFM

1,177 599 599 364 364 1,152 16,764 2.0 35 0

0.50 0.83 0.83 0.83 0.83 1.000 1.000 1.000

33.7 17.0 25.7 27.4 36.6

0.641 0.543 0.543 0.543 0.543

Sub-total Safety factors:

25,427 5,513 8,347 5,425 7,231 3,931 129,893 500 444

49,044 21,138 21,138 12,856 12,856

0.000

0

1,334 950 351

186,711 +10% --------205,382

Total w/ safety factors:

41.665 35.295 35.295 35.295 35.295

2,635 +10% --------2,899

0 +0% --------0

Equipment Cooling Loads Item Name

Nominal Output Sensible

Quantity Type Sensible

Nominal Output Latent

Quantity Type Latent

Sensible Load (Btuh)

Latent Load (Btuh)

18 16,764

watts/sq.ft. watts

667 195

Btuh watts

72,691 57,201

667 667

129,893

1,334

EQUPO INTERIOR TABLEROS Miscellaneous Equipment Total

Lighting Cooling Loads Item Name Compact Fluorescent, Twin, (2) 40 W lamp, Mag-Std ballast Total

Quantity

Quantity Type

Special Allowance Factor

Space Fraction

Occurrences

12

watts

8

1

12

Usage Factor 1

Load (Btuh) 3,931

3,931



Air System #1 (Uma 101/101r) Psychrometric Analysis System Load Analysis

Latent

Leaving Coil Condition Draw-Thru Fan Misc Load on Supply Side Supply Air Duct Room Loads Reheat

Grains

Sensible

Temp

CFM

9,667 0 11,318 205,382 0

55.000 0.854 0.000 1.000 18.146 0.000

541 0 633 11,494 0

226,367 8,120 0 0 7,877 0

75.000 0.750 0.000 0.000 0.663 0.000

12,668

242,363

76.413

12,668

79.391 0

0.000

2,953

0.422

Room Condition Return Air Duct Return Air Plenum Misc Load on Return Side Vent Air 551 CFM Blow-Thru Fan

2,953

79.813

0 6,851

0.000 0.981

Entering Coil Condition

9,804

80.794

General Psychrometric Equations Used In Analysis: PR TSH TLH GTH TSH TLH

=(Barometric pressure of site / Standard ASHRAE pressure of 29.921) = PR x 1.10 x CFM x (DB entering - DB leaving) = PR x 0.68 x CFM x (Grains entering - Grains leaving) = PR x 4.50 x CFM x (Enthalpy entering - Enthalpy leaving) = =

0.812 0.812

x x

1.10 0.68

x x

12,668 12,668

x( x(

76.4 80.8

-

55.0 79.4

)= )=

SUM = GTH = 0.812 Total System Load

x

4.50

x

12,668

x(

31.0

-

25.5

)= =

242,363 Btuh 9,818 Btuh ---------252,180 Btuh 253,113 Btuh 250,326 Btuh

= = =

0.0 GPM 0.0 GPM 0.0 lb./hr

Chilled and Hot Water Flow Rates and Steam Requirement Cooling GPM Heating GPM Steam Req.

= = =

253,113 / ( 0 /( 0 /

0.00 0.00 0

x x

500 500

Entering Cooling Coil Conditions Dry bulb temperature: Wet bulb temperature: Relative humidity: Enthalpy:

Entering Heating Coil Conditions 76.41 62.26 48.25 30.98 Btu/lbm

Leaving Cooling Coil Conditions Dry bulb temperature: Wet bulb temperature: Relative humidity: Enthalpy:

) )

Dry bulb temperature:

75.00

Leaving Heating Coil Conditions 55.00 54.98 99.87 25.51 Btu/lbm

Dry bulb temperature:

75.00



Air System #1 (Uma 101/101r) Psychrometric Chart RC LC SD DTF RE SM PRE MIX

Room Condition Leaving Coil Condition Supply Duct Temperature Rise Draw Through Fan Sensible Gain Reserve or Reheat Sensible Gain Supply Side Miscellaneous Sensible Gain Pretreated Air Condition Mixed Air Condition

OC EC RD BTF PL MR HRV RML

Outdoor Condition Entering Coil Condition Return Duct Temperature Rise Blow Through Fan Sensible Gain Return Air Plenum Sensible Gain Return Side Miscellaneous Gain Heat Recovery Ventilator Condition Return Miscellaneous Latent Gain



Building Pie Charts Building peaks in August at 5pm.

Roof - 10.84%

Return Duct - 3.24% Supply Duct - 4.52% Draw-Thru Fan - 3.86% Cool. Infil. - 0.40% Cool. Vent. - 5.88%

Wall - 11.22%

People - 0.64%

Building Net Gain 250,326 Btuh

Lighting - 1.73%

Equipment - 57.66%



Room #1 - Cuarto De Tableros Electricos - Pie Charts Room #1 peaks in August at 6pm

Cool. Infil. - 0.42% People - 0.77% Roof - 13.43%

Wall - 14.00% Room #1 Net Gain 208,280 Btuh

Lighting - 2.08%

Equipment - 69.31%

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