Retrotec USACE - Manual (Page 410)

L10 ENERGY & PROCESS ASSESSMENT PROTOCOL
4.1.55 Install insulation on steam distribution systems.
4.1.56 Install steam metering and monitoring systems.
4.1.57 Investigate economics of adding insulation on presently insulated lines.
4.1.58 Review mechanical standby turbines presently left in the idling mode.
4.1.59 Review operation of long steam lines to remote single-service applications.
4.1.60 Review operation of steam systems used only for occasional services, such as winter-
only tracing lines.
4.1.61 Review pressure-level requirements of steam-driven mechanical equipment to consider
using lower exhaust pressure levels.
4.1.62 Review requirements of heated storage vessels and reduce to minimum acceptable
temperatures.
4.1.63 Survey condensate presently being discharged to waste drains for feasibility of heat re-
covery.
4.1.64 Check fl ue for improper draft.
4.1.65 Use primary/secondary pumping confi gurations on central plants.
4.1.66 Reclaim heat from steam condensate.
4.1.67 Maintain steam traps.
4.1.68 Reduce water or steam fl ow rates in pipes.
4.1.69 Remove scale from water and steam pipes.
4.1.70 Repair steam system controls.
4.1.71 Consider replacement of steam distribution system with a hot water system to reduce
heat and water losses and cost of replacement piping.
4.2 Chiller System
4.2.1 Chiller retrofi ts.
4.2.2 Cooling tower retrofi ts including high-effi ciency fi ll, VSD fans, fi berglass fans, hy-
perbolic stack extensions, fan controls, VSD pump drives, and improved distribution
nozzles.
4.2.3 Install economizer cooling systems.
4.2.4 Install evaporative precooling on 100% makeup air.
4.2.5 Install evaporative-cooled or water-cooled condensers.
4.2.6 Install evaporative cooling systems with or without a heat pipe.
4.2.7 Install roof-spray cooling systems.
4.2.8 Insulate low-side refrigerant lines.
4.2.9 Investigate use of gas engine–driven chillers.
4.2.10 Isolate offl ine chillers and cooling towers.
4.2.11 Reduce ammonia head pressure.
4.2.12 Reduce overpumping on chilled water systems.
4.2.13 Reduce noncondensable gases in refrigerant systems.
4.2.14 Replace absorption with electric drive chillers.