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Mehmet Bariskan -Env. Control 2010_Design for a heating and cooling system of a building

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Mehmet Bariskan
Mehmet Bariskan

The document provides requirements for designing a HVAC system for a building consisting of a restaurant, lounge, and kitchen with a maximum capacity of 100 people. It includes building data, schedules for use, infiltration rates, design cooling and heating loads, ventilation rates per ASHRAE standards, duct design and sizing, and component selection including a cooling coil and heating coil from Carrier.

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City College of New York School of Engineering Mechanical Engineering Department ME 54700-Environmental Control Fall-2010 Subject : Design for a heating and cooling system of a building Instructor : Jorge E. González, Ph.D.NOAA CREST Professor of Mechanical Engineering Student : Mehmet Bariskan
2 Requirement Design for a heating and cooling system of a building consisting of a restaurant, lounge, and a kitchen for maximum capacity of 100 people. The restaurant is to be located in the New York/New Jersey area and the HVAC design should consider high energy efficient approaches. Building data is as follows; Building size: 80 ft x 60 ft x 12 ft. Windows are located in the south, north and east sides; with sizes corresponding to wall area percentages equal to 25%, 10%, and 10%. Windows should be double glazing, low emissivity. Overhangs can be used to reduce cooling loads. Walls and roofs should use high R values corresponding to minimums of 20 and 36 hrft2- ºF/Btu, respectively. Lighting intensity is equivalent to 10W/m2. Equipment includes a large gas stove, a large refrigerator, several TV screens spread across the room, and three computers. Infiltration should be set to a high value equal to 1.5 changes per hour to maintain good levels of air quality. Provide the following in your solution; Set a schedule for use of the building. Report infiltration rates, design cooling and heating loads based on daily profile. Define ventilation rates. Refer to ASHRAE Standards for specific application. Design air distribution system. Prefer method is exposed round system. Specify duct diameters, distance, and exhaust systems. Sizing and recommended HVAC components; V/C system, air handling unit, cooling & heating coils. Specify vendors of each component and model numbers. Provide schematic of the design. Provide cost estimate of the HVAC system. Report; Write a concise report that describes the design, and includes the requirements above. Include a cover page in the report. Reports should not exceed 20 pages total, and are due Friday December 17, 2010, at 5:00 PM EST. Reference: 1. 2007 American Society of Heating, Refrigeration and Air Conditioning (ASHRAE), Applications Handbook.
3 Schedule for use of the building 8 am to 8 pm (12 hours /day- Lights on 12 hours to), 100 people max. capacity (100 people an hour) 80 ft x 60 ft x 12 ft Total; Area East (ft2 ) North ( West ( South ( Wall 648 864 688 720 Window 72 96 0 240 Door 0 0 32 0 Length Window 2x(9+8)=34 ft 2x(12+8)=40 ft 0 2x(4.5+8)+ 2x(25.5+8)=92ft Door 0 0 2x(4+8)=24 ft 0
4 Kitchen; Area East (ft2 ) North ( West ( South ( Wall 336 360 360 360 Window 0 0 0 0 Door 24 0 0 0 Length Window 0 0 0 0 Door 2*(3+8)=22 ft 0 0 0 Lounge; Area East (ft2 ) North ( West ( South ( Wall 336 360 328 324 Window 0 0 0 36 Door 24 0 32 0 Length Window 0 0 0 2x(4.5+8)=25ft Door 2*(3+8)=22 ft 0 2*(4+8)=24 ft 0 Restaurant; Area East (ft2 ) North ( West ( South ( Wall 648 504 672 396 Window 72 96 0 204 Door 0 0 48 0 Length Window 2x(9+8)=34 ft 2x(12+8)=40 ft 0 2x(25.5+8)=67ft Door 0 0 4*(3+8)=44 ft 0  Infiltration rates Assuming 20 mph (29.5 ft/s), Δ P= (inWg) South North East West Cp (Figure 7.4) 0.6 -0.2 -0.6 -0.6 0.114 -0.038 -0.114 -0.114 (Figure 7.6) 0.01 0.01 0.01 0.01 0.12 -0.03 -0.12 -0.12
5 Assuming k= 1 (tight) for windows, k=0.22 (tight) for wall, k=40 crack 1/8’’, one door on south, South North East West (inWG) 0.12 -0.03 -0.12 -0.12 Q/L (Fig. 7.8) 0.35 -0.1 -0.35 -0.35 L window (ft) 92 40 34 0 Q window 32.2 4 11.9 0 48.1 (Q/A) wall (Fig. 7.11) 0.05 0.02 -0.05 -0.05 A wall 720 864 648 688 Qc wall 36 17.3 32.4 34.4 120.1 (Q/L) door(Fig. 7.9) 0 0 0 4 L door 0 0 0 24 Q door 0 0 0 96 96 Total CFM 264.2 And infiltration due to door opening as a function of traffic rate 100 people per hour. From Figure (7.10) C=2900 (Single-bank type) Q traffic= 1000 CFM Q Total Infiltration = 1264 CFM  Design cooling and heating loads based on daily profile. Design Dry 90 F Summer, Winter 20 F Windows double glazing with low emissivity ( Table 6.6)
6 Restaurant
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8 Lounge
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10 Kitchen
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12 Qtotal = 55493 W = 15.78 Tons For heating; Restourant
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14 Lounge
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16 Kitchen
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18 Qcooling = 55493 W = 15.78 Tons Qheating = 40414 W = 11.49 Tons Ventilation Rates The volume of building = 80 x 60 x 12 = 57600 ft 3 Infiltration should be set to a high value equal to 1.5 changes per hour = 57600 x 1.5 = 86400 ft 3 /h = 1440 CFM. Cooling and Heating Coil capacities Total volume = 60 x 80 x 12 = 57600 ft2 Flow Rate = = = 1440 CFM %25 of air supplied from inside 0.25 x 1440 = 360 CFM %75 of air supplied from outside 0.75 x 1440 = 1080 CFM Specific volume of air Mass flow rate going to system, coming from outside, returned from inside
19 Cooling Coil capacity; Heating Coil Capacity; For summer time; Duct Design; Section Length (ft) V (ft3 /min) ∆P/L Duct Loss in WG Diameter (in) Velocity (ft/min) C Fitting Loss in WG Total WG 1-2 3 1125 0.25 0.0075 16 806 - - 0.0075 2-3 2 1500 0.25 0.005 18 849 0.23 0.01 0.015 2-33 3 375 0.25 0.0075 10 688 0.22 0.006 0.0135 33 2 375 0.25 0.005 10 688 - - 0.005 4-5 4 1500 0.25 0.01 18 849 - - 0.01 6-7 6 1500 0.25 0.015 18 849 - - 0.015 8-9 14 1500 0.25 0.035 18 849 - - 0.035 9-10 15 100 0.25 0.0375 6 510 1.5 0.024 0.0615 10 2 100 0.25 0.005 6 510 0.22 0.0036 0.0086
20 9-11 9 1400 0.25 0.0225 18 793 0.009 0.0004 0.0229 11 2 100 0.25 0.005 6 510 1.5 0.024 0.029 11-12 8 1300 0.25 0.02 18 736 0.007 0.0002 0.0202 12-13 15 100 0.25 0.0375 6 510 1.5 0.024 0.0615 13 2 100 0.25 0.005 6 510 0.22 0.004 0.009 12-14 9 1200 0.25 0.0225 16 860 0.008 0.0004 0.0229 14 2 100 0.25 0.005 6 510 1.7 0.028 0.033 14-15 10 1100 0.25 0.025 16 788 0.008 0.0003 0.0253 15-16 15 1100 0.25 0.0375 16 788 0.22 0.009 0.0465 16 2 100 0.25 0.005 6 510 1.8 0.029 0.034 16-17 15 1000 0.25 0.0375 14 936 0.009 0.0005 0.038 17 2 100 0.25 0.005 6 510 1.4 0.023 0.028 17-18 15 900 0.25 0.0375 14 843 0.01 0.0004 0.0379 18-19 10 900 0.25 0.025 14 843 0.22 0.0097 0.0347 19 2 100 0.25 0.005 6 510 1.4 0.023 0.028 19-20 9 800 0.25 0.0225 14 749 0.011 0.0004 0.0229 20-21 15 100 0.25 0.0375 6 510 1.4 0.023 0.0605 21 2 100 0.25 0.005 6 510 0.22 0.004 0.009 20-22 8 700 0.25 0.02 12 892 0.012 0.0006 0.0206 22 2 100 0.25 0.005 6 510 1.41 0.023 0.028 22-23 9 600 0.25 0.0225 12 764 0.014 0.0005 0.023 23-24 15 100 0.25 0.0375 6 510 1.3 0.021 0.0585 24 2 100 0.25 0.005 6 510 0.22 0.0036 0.0086 23-25 8 500 0.25 0.02 10 917 0.016 0.0008 0.0208 25 2 100 0.25 0.005 6 510 1.2 0.019 0.024 25-26 9 400 0.25 0.0225 9 904 0.02 0.001 0.0235 26-27 15 100 0.25 0.0375 6 510 1.12 0.018 0.0555 27 2 100 0.25 0.005 6 510 0.22 0.0036 0.0086 26-28 8 300 0.25 0.02 8 1146 0.03 0.0025 0.0225 28 2 100 0.25 0.005 6 510 1.1 0.018 0.023 28-29 9 200 0.25 0.0225 7 749 0.05 0.0017 0.0242 29-30 15 200 0.25 0.0375 7 749 0.22 0.008 0.0455 30 2 100 0.25 0.005 6 510 0.98 0.016 0.021 30-31 15 100 0.25 0.0375 6 510 0.1 0.0016 0.0391 31-32 17 100 0.25 0.0425 6 510 0.22 0.0036 0.0461 32 2 100 0.25 0.005 6 510 0.22 0.0036 0.0086 Most pressure loss ; ∆Ppomp=0.035 + 0.0229 + 0.0202 + 0.0229 + 0.0253 + 0.0465 + 0.038 + 0.0379 + 0.0347 + 0.0229 + 0.0206 + 0.023 + 0.0208 + 0.0235 + 0.0225 + 0.0242 + 0.0455 + 0.0391 + 0.0461 + 0.0086 = 0.5802 InWG = 144.5 Pa Component Selection: Cooling Coil Supplier: Carrier (www.commercial.carrier.com) Model Number: 28BDA412HDC121CR
21 Performance Data; Rows Circuit Type Pins / in Total Capacity Btuh Water Temp Drop Leaving Air DB Temp Leaving Air WB Temp Water Pressure Drop (ft WG) Air Pressure Drop (in WG) 4 Half 12 15275 14.7 59.14 57.37 11.3 0.61 Heating Coil; Supplier: Carrier (www.commercial.carrier.com) Model Number: 28BHA214HDB121CR
22 Performance Data; Rows Circuit Type Pins / in Total Capacity Btuh Water Temp Drop Leaving Air DB Temp Water Pressure Drop (ft WG) Air Pressure Drop (in WG) 2 Half 14 37215 46.19 108.62 9.16 0.52

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Mehmet Bariskan -Env. Control 2010_Design for a heating and cooling system of a building

  • 1. City College of New York School of Engineering Mechanical Engineering Department ME 54700-Environmental Control Fall-2010 Subject : Design for a heating and cooling system of a building Instructor : Jorge E. González, Ph.D.NOAA CREST Professor of Mechanical Engineering Student : Mehmet Bariskan
  • 2. 2 Requirement Design for a heating and cooling system of a building consisting of a restaurant, lounge, and a kitchen for maximum capacity of 100 people. The restaurant is to be located in the New York/New Jersey area and the HVAC design should consider high energy efficient approaches. Building data is as follows; Building size: 80 ft x 60 ft x 12 ft. Windows are located in the south, north and east sides; with sizes corresponding to wall area percentages equal to 25%, 10%, and 10%. Windows should be double glazing, low emissivity. Overhangs can be used to reduce cooling loads. Walls and roofs should use high R values corresponding to minimums of 20 and 36 hrft2- ºF/Btu, respectively. Lighting intensity is equivalent to 10W/m2. Equipment includes a large gas stove, a large refrigerator, several TV screens spread across the room, and three computers. Infiltration should be set to a high value equal to 1.5 changes per hour to maintain good levels of air quality. Provide the following in your solution; Set a schedule for use of the building. Report infiltration rates, design cooling and heating loads based on daily profile. Define ventilation rates. Refer to ASHRAE Standards for specific application. Design air distribution system. Prefer method is exposed round system. Specify duct diameters, distance, and exhaust systems. Sizing and recommended HVAC components; V/C system, air handling unit, cooling & heating coils. Specify vendors of each component and model numbers. Provide schematic of the design. Provide cost estimate of the HVAC system. Report; Write a concise report that describes the design, and includes the requirements above. Include a cover page in the report. Reports should not exceed 20 pages total, and are due Friday December 17, 2010, at 5:00 PM EST. Reference: 1. 2007 American Society of Heating, Refrigeration and Air Conditioning (ASHRAE), Applications Handbook.
  • 3. 3 Schedule for use of the building 8 am to 8 pm (12 hours /day- Lights on 12 hours to), 100 people max. capacity (100 people an hour) 80 ft x 60 ft x 12 ft Total; Area East (ft2 ) North ( West ( South ( Wall 648 864 688 720 Window 72 96 0 240 Door 0 0 32 0 Length Window 2x(9+8)=34 ft 2x(12+8)=40 ft 0 2x(4.5+8)+ 2x(25.5+8)=92ft Door 0 0 2x(4+8)=24 ft 0
  • 4. 4 Kitchen; Area East (ft2 ) North ( West ( South ( Wall 336 360 360 360 Window 0 0 0 0 Door 24 0 0 0 Length Window 0 0 0 0 Door 2*(3+8)=22 ft 0 0 0 Lounge; Area East (ft2 ) North ( West ( South ( Wall 336 360 328 324 Window 0 0 0 36 Door 24 0 32 0 Length Window 0 0 0 2x(4.5+8)=25ft Door 2*(3+8)=22 ft 0 2*(4+8)=24 ft 0 Restaurant; Area East (ft2 ) North ( West ( South ( Wall 648 504 672 396 Window 72 96 0 204 Door 0 0 48 0 Length Window 2x(9+8)=34 ft 2x(12+8)=40 ft 0 2x(25.5+8)=67ft Door 0 0 4*(3+8)=44 ft 0 ï‚· Infiltration rates Assuming 20 mph (29.5 ft/s), Δ P= (inWg) South North East West Cp (Figure 7.4) 0.6 -0.2 -0.6 -0.6 0.114 -0.038 -0.114 -0.114 (Figure 7.6) 0.01 0.01 0.01 0.01 0.12 -0.03 -0.12 -0.12
  • 5. 5 Assuming k= 1 (tight) for windows, k=0.22 (tight) for wall, k=40 crack 1/8’’, one door on south, South North East West (inWG) 0.12 -0.03 -0.12 -0.12 Q/L (Fig. 7.8) 0.35 -0.1 -0.35 -0.35 L window (ft) 92 40 34 0 Q window 32.2 4 11.9 0 48.1 (Q/A) wall (Fig. 7.11) 0.05 0.02 -0.05 -0.05 A wall 720 864 648 688 Qc wall 36 17.3 32.4 34.4 120.1 (Q/L) door(Fig. 7.9) 0 0 0 4 L door 0 0 0 24 Q door 0 0 0 96 96 Total CFM 264.2 And infiltration due to door opening as a function of traffic rate 100 people per hour. From Figure (7.10) C=2900 (Single-bank type) Q traffic= 1000 CFM Q Total Infiltration = 1264 CFM ï‚· Design cooling and heating loads based on daily profile. Design Dry 90 F Summer, Winter 20 F Windows double glazing with low emissivity ( Table 6.6)
  • 7. 7
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  • 12. 12 Qtotal = 55493 W = 15.78 Tons For heating; Restourant
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  • 15. 15
  • 17. 17
  • 18. 18 Qcooling = 55493 W = 15.78 Tons Qheating = 40414 W = 11.49 Tons Ventilation Rates The volume of building = 80 x 60 x 12 = 57600 ft 3 Infiltration should be set to a high value equal to 1.5 changes per hour = 57600 x 1.5 = 86400 ft 3 /h = 1440 CFM. Cooling and Heating Coil capacities Total volume = 60 x 80 x 12 = 57600 ft2 Flow Rate = = = 1440 CFM %25 of air supplied from inside 0.25 x 1440 = 360 CFM %75 of air supplied from outside 0.75 x 1440 = 1080 CFM Specific volume of air Mass flow rate going to system, coming from outside, returned from inside
  • 19. 19 Cooling Coil capacity; Heating Coil Capacity; For summer time; Duct Design; Section Length (ft) V (ft3 /min) ∆P/L Duct Loss in WG Diameter (in) Velocity (ft/min) C Fitting Loss in WG Total WG 1-2 3 1125 0.25 0.0075 16 806 - - 0.0075 2-3 2 1500 0.25 0.005 18 849 0.23 0.01 0.015 2-33 3 375 0.25 0.0075 10 688 0.22 0.006 0.0135 33 2 375 0.25 0.005 10 688 - - 0.005 4-5 4 1500 0.25 0.01 18 849 - - 0.01 6-7 6 1500 0.25 0.015 18 849 - - 0.015 8-9 14 1500 0.25 0.035 18 849 - - 0.035 9-10 15 100 0.25 0.0375 6 510 1.5 0.024 0.0615 10 2 100 0.25 0.005 6 510 0.22 0.0036 0.0086
  • 20. 20 9-11 9 1400 0.25 0.0225 18 793 0.009 0.0004 0.0229 11 2 100 0.25 0.005 6 510 1.5 0.024 0.029 11-12 8 1300 0.25 0.02 18 736 0.007 0.0002 0.0202 12-13 15 100 0.25 0.0375 6 510 1.5 0.024 0.0615 13 2 100 0.25 0.005 6 510 0.22 0.004 0.009 12-14 9 1200 0.25 0.0225 16 860 0.008 0.0004 0.0229 14 2 100 0.25 0.005 6 510 1.7 0.028 0.033 14-15 10 1100 0.25 0.025 16 788 0.008 0.0003 0.0253 15-16 15 1100 0.25 0.0375 16 788 0.22 0.009 0.0465 16 2 100 0.25 0.005 6 510 1.8 0.029 0.034 16-17 15 1000 0.25 0.0375 14 936 0.009 0.0005 0.038 17 2 100 0.25 0.005 6 510 1.4 0.023 0.028 17-18 15 900 0.25 0.0375 14 843 0.01 0.0004 0.0379 18-19 10 900 0.25 0.025 14 843 0.22 0.0097 0.0347 19 2 100 0.25 0.005 6 510 1.4 0.023 0.028 19-20 9 800 0.25 0.0225 14 749 0.011 0.0004 0.0229 20-21 15 100 0.25 0.0375 6 510 1.4 0.023 0.0605 21 2 100 0.25 0.005 6 510 0.22 0.004 0.009 20-22 8 700 0.25 0.02 12 892 0.012 0.0006 0.0206 22 2 100 0.25 0.005 6 510 1.41 0.023 0.028 22-23 9 600 0.25 0.0225 12 764 0.014 0.0005 0.023 23-24 15 100 0.25 0.0375 6 510 1.3 0.021 0.0585 24 2 100 0.25 0.005 6 510 0.22 0.0036 0.0086 23-25 8 500 0.25 0.02 10 917 0.016 0.0008 0.0208 25 2 100 0.25 0.005 6 510 1.2 0.019 0.024 25-26 9 400 0.25 0.0225 9 904 0.02 0.001 0.0235 26-27 15 100 0.25 0.0375 6 510 1.12 0.018 0.0555 27 2 100 0.25 0.005 6 510 0.22 0.0036 0.0086 26-28 8 300 0.25 0.02 8 1146 0.03 0.0025 0.0225 28 2 100 0.25 0.005 6 510 1.1 0.018 0.023 28-29 9 200 0.25 0.0225 7 749 0.05 0.0017 0.0242 29-30 15 200 0.25 0.0375 7 749 0.22 0.008 0.0455 30 2 100 0.25 0.005 6 510 0.98 0.016 0.021 30-31 15 100 0.25 0.0375 6 510 0.1 0.0016 0.0391 31-32 17 100 0.25 0.0425 6 510 0.22 0.0036 0.0461 32 2 100 0.25 0.005 6 510 0.22 0.0036 0.0086 Most pressure loss ; ∆Ppomp=0.035 + 0.0229 + 0.0202 + 0.0229 + 0.0253 + 0.0465 + 0.038 + 0.0379 + 0.0347 + 0.0229 + 0.0206 + 0.023 + 0.0208 + 0.0235 + 0.0225 + 0.0242 + 0.0455 + 0.0391 + 0.0461 + 0.0086 = 0.5802 InWG = 144.5 Pa Component Selection: Cooling Coil Supplier: Carrier (www.commercial.carrier.com) Model Number: 28BDA412HDC121CR
  • 21. 21 Performance Data; Rows Circuit Type Pins / in Total Capacity Btuh Water Temp Drop Leaving Air DB Temp Leaving Air WB Temp Water Pressure Drop (ft WG) Air Pressure Drop (in WG) 4 Half 12 15275 14.7 59.14 57.37 11.3 0.61 Heating Coil; Supplier: Carrier (www.commercial.carrier.com) Model Number: 28BHA214HDB121CR
  • 22. 22 Performance Data; Rows Circuit Type Pins / in Total Capacity Btuh Water Temp Drop Leaving Air DB Temp Water Pressure Drop (ft WG) Air Pressure Drop (in WG) 2 Half 14 37215 46.19 108.62 9.16 0.52