District Heating/Cooling System Optimization - The PERTAN Group

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Flooded Trenches and Man Holes Savings Normally pipes found in flooded pits require replacement after 15 years rather than after 30 years at a total cost estimated to be $ 360,000. This investment can be postponed by 15 years. Averaging this cost over 15 years results in an annual saving of about $ 24,000. Payback The resulting payback period is 0.125 years or one month. 42
Stop Leaks – Fix Broken Release Valve Savings A 465 gal/hr leak equals about 4,000 kgal/yr while the costs for 1 kgal of city water are $ 4. Thus, the annual savings are about $ 16,000. Investment The cost for a 1” valve including a full day of labor is about $ 500. Payback The resulting payback period is 0.03 years or 11 days. 43
Page 1 and 2: District Heating/Cooling System Opt
Page 3 and 4: Overview on Central Energy Systems
Page 5 and 6: Central Energy Systems at a Glance
Page 7 and 8: Pressure Diagram Pressure Drop Pump
Page 9 and 10: Heat Demand Depends on the Ambient
Page 11 and 12: Central Heating System Supply Tempe
Page 13 and 14: Agenda 1. Overview and Technical De
Page 15 and 16: Overview Heating Systems 82 nd Heat
Page 17 and 18: SOCOM (Heating Zone 1) - Model Para
Page 19 and 20: Operating a Modern Variable Flow Ho
Page 21 and 22: Overview Cooling Systems 82 nd Heat
Page 23 and 24: H-Plant (Cooling) - Model Parameter
Page 25 and 26: Interconnection of the Central Plan
Page 27 and 28: New Cooling Pipes Required to add B
Page 29 and 30: Heat Generation incl. Heat for Abso
Page 31 and 32: Comparison between Reality and Draw
Page 33 and 34: Cost Savings by Using European Type
Page 35 and 36: Central Energy Systems at a Glance
Page 37 and 38: 1. Central Plants • Oversized or
Page 39 and 40: 3. Man Holes (if needed or existing
Page 41: Variable Speed Pumps do not Work Pr
Page 45 and 46: 2 Systems within a few Feet Distenc
Page 47 and 48: Uninsulated Fittings 47
Page 49 and 50: Fibre Glas Condensate Pipe after St
Page 51 and 52: Man Holes Without Cover and Pumps 5
Page 53 and 54: Unsealed Foam Opening 53
Page 55 and 56: Highly Corroted Equipment 55
Page 57 and 58: Uninsulated Flange 57
Page 59 and 60: Leaky Valve in Man Hole 59
Page 62: Who is GEF Ingenieur AG ? GEF is a

District Heating/Cooling System Optimization - The PERTAN Group

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