HomeMy WebLinkAboutCity of Marshall Heat Recovery Study - Jul 2012 - REF Grant 7060940MARSHALL, ALASKA HEAT RECOVERY STUDY
PREPARED BY:
Alaska Native Tribal Health Consortium
Division of Environmental Health and Engineering
1901 Bragaw St, Ste 200, Anchorage AK 99508
Phone (907) 729-3600 / Fax (907) 729-4090
July 16, 2012
EXECUTIVE SUMMARY
The Marshall power plant community store and water treatment plant (WTP) building were
evaluated for heat recovery potential. The total estimated annual heating fuel used by the
store & WTP is approximately 7,700 gallons. The estimated fuel savings realized by
implementing a heat recovery system is approximately 7,700 gallons. The estimated cost for
the heat recovery project is $172,700. The simple payback based on a 2011 fuel cost of
$4.01/gallon is 5.6 years. Assuming construction in 2014, the design and construction cost
with 2 years of 3% escalation is $183,200.
The Marshall power plant, store & WTP were part of a VSW heat recovery project in 2007
which never worked due to problems with the original design. However, much of the cost of
constructing a working system has been invested. and the cost to bring the system to full
operation is modest compared to the benefit.
1.0 INTRODUCTION
The Alaska Native Tribal Health Consortium (ANTHC) reviewed the feasibility of providing
recovered heat from the power plant to the existing community store and WTP in Marshall.
ANTHC also developed a budgetary project cost estimate based on Force Account
Construction, including Engineering and Construction Administration.
The existing store and WTP building is hydronically heated. An energy audit of the WTP
performed in 2011 verified approximately 6,200 gallons/year of fuel consumption. The fuel
consumption for the existing city store was estimated to be approximately 1500 gallons. All
the fuel currently consumed is expected to be offset with recovered heat from the power plant.
The existing power plant was modified in 2007 for heat recovery and has a brazed plate heat
exchanger already installed. Per conversations with AVEC, the existing HR controls and
piping need to be upgraded to prevent excessive pressure drop through the cooling system
and the cooling system insulated. No other work is required to incorporate heat recovery.
The WTP was modified in 2007 for heat recovery and has a brazed plate heat exchanger and
circulation pumps already installed. The piping in the WTP needs to be reconfigured to
provide maximum recovered heat benefit, the heat recovery controls replaced, and a BTU
meter added for billing. No other work is required to incorporate heat recovery.
The community store was promised access to the heat recovery system in trade for running
the heat recovery lines across the store property. New work includes adding hydronic unit
heater and a BTU meter for billing. No other work is required to incorporate heat recovery.
Additional assumptions have been made in the development of this report, including, but not
limited to, the condition of the existing arctic piping, building heating loads, and flow rates and
pressure drops of the heat recovery system. It is anticipated that other design elements will
be required as the project progresses to final design.
Available as-built information was obtained from a field energy audit, AVEC, and Village Safe
Water regarding the 2011 power plant electrical loads, end-user annual fuel use, and the
existing heat recovery design. Site visits were made to the existing WTP to confirm accuracy
of information obtained.
2.0 OVERVIEW
The purpose of this study is to provide an estimate of the heat that can be recovered from the
power plant diesel engines and used to offset heating oil consumption at the nearby WTP and
community store. Useable recovered heat is quantified in gallons of heating fuel saved using
a gross heating value of 134,000 BTU per gallon of #1 arctic diesel fuel and an overall boiler
efficiency of 72% for a net heating value of 96,480 BTU per gallon.
The WTP and community store studied for heat recovery adjacent to the Marshall power
plant. This analysis evaluates the potential to provide recovered heat to the WTP and the
store. The estimated average annual heating fuel consumption is 7,700 gallons.
3.0 ESTIMATED RECOVERED HEAT UTILIZATION
A heat recovery utilization spreadsheet has been developed to estimate the recoverable heat
based on monthly total electric power production, engine heat rates, building heating
demand, heating degree days, passive losses for power plant heat and piping, and arctic
piping losses. The spreadsheet utilizes assumed time-of-day variations for electric power
production and heat demand. Power generation data from fiscal year 2011 is used in the
spreadsheet. The estimated heat rejection rate for the lead power plant genset, a DD 60, is
used to estimate available recovered heat. Heating degree-days for Pilot Point were utilized
for this site. All arctic piping is routed below grade except for the existing well lines. All interior
power plant hydronic piping is assumed to be 4-inch pipe with 1 inch of foam rubber
insulation.
Following is a summary of annual fuel use and estimated heat utilization in equivalent gallons
of fuel for each building:
Facility Estimated Annual
Fuel Use without HR
(Gallons)
Estimated Annual Fuel
Savings (Gallons)
WTP 6200 6200
Community Store 1500 1500
Total 7,700 7,700
4.0 HEAT RECOVERY SYSTEM DESCRIPTION AND OPERATION:
The heat recovery system captures jacket water heat generated by diesel engines that is
typically rejected to the atmosphere by the radiators. The recovered heat is transferred via
below-grade arctic piping to the end users. The objective is to reduce the consumption of
expensive heating fuel by utilizing available recovered heat.
Although heat recovery is an excellent method of reducing heating fuel costs,
recovered heat is a supplementary heat source and it is imperative that the end-user
facility heating systems are operational at all times.
Hot engine coolant is piped through a plate heat exchanger located at the power plant. Heat is
transferred from the engine coolant to the recovered heat loop without mixing the fluids.
Controls are used to prevent subcooling of the generator engines and reducing electric power
production efficiency. The recovered heat fluid is pumped through buried insulated pipe to the
end-user facilities, and is typically tied into the end-user heating system using a plate heat
exchanger or in the case of the store, a hydronic unit heater.
4.1 POWER PLANT TIE-IN
The power plant cooling system currently sends the entire generator cooling flow through the
heat recovery heat exchanger. As long as only one engine is running, this is not a problem,
but it becomes a problem when more than one engine runs. To address this, a bypass line
around the heat exchanger will be installed with a modulating control valve to prevent
excessive back pressure against the generator engines. An existing 3-way valve on the cold
side of the heat exchanger prevents subcooling of the power plant system.
All heat recovery piping inside the power plant will be insulated with a minimum of 1-in foam
insulation. All valves will be either bronze ball valves or lug style butterfly valves with seals
compatible with 50/50 glycol/water mixtures at 200F. Air vents, thermometers, pressure
gauges, drain valves, and pressure relief valves will also be provided.
4.2 ARCTIC PIPING (Recovered Heat Loop)
The existing heat recovery piping between the power plant and the WTP will remain and be
re-used. The recovered heat fluid will be replaced with 50/50 Propylene Glycol/Water
solution to provide freeze protection to the piping.
4.3 WTP BUILDING TIE-IN
WTP building tie-in consists of two existing heat recovery circulator pumps, an existing
brazed plate heat exchanger and an existing motorized bypass valve to prevent back feeding
heat to power plant. Currently the 3 way valve controls don’t work and the heat exchanger is
piped to serve only the circulating water mains and water storage tank.
The proposed design will modify the piping so that the heat recovery system serves the entire
WTP building load and the 3-way valve will be replaced with a heat injection pump. The
controls will be replaced to provide a working system.
Typical indoor piping will be type L copper tube with solder joints. Isolation valves will be
solder end bronze ball valves or flanged butterfly valves. All piping will be insulated with a
minimum of 1-in insulation with an all-service jacket. Flexibility will be provided where
required for thermal expansion and differential movement. Air vents, thermometers, pressure
gauges, drain valves, and pressure relief valves will also be provided.
The WTP will also receive a BTU meter to provide recovered heat use totalization and
instantaneous use.
4.4 COMMUNITY STORE BUILDING TIE-IN
The Community store will have a hydronic unit heater and BTU meter installed for recovered
heat use and the existing Heat Recovery lines extended to the new equipment.
Typical indoor piping will be type L copper tube with solder joints. Isolation valves will be
solder end bronze ball valves or flanged butterfly valves. All piping will be insulated with a
minimum of 1-in insulation with an all-service jacket. Flexibility will be provided where
required for thermal expansion and differential movement. Air vents, thermometers, pressure
gauges, drain valves, and pressure relief valves will also be provided.
4.5 RIGHTS-OF-WAY ISSUES
There are no apparent conflicts with rights-of-ways for the arctic piping between the power
plant and the end-user buildings, as the piping is entirely installed at this time.
A Heat Sales/Right-of-Entry Agreement will be required between the power utility and the end
users to define the parties’ responsibilities, detail the cost of recovered heat, and authorize
the connection to the power plant heat recovery equipment.
4.6 POTENTIAL RISKS AND UNKNOWNS
The existing equipment and controls have been inactive since installation in 2007. It’s
possible that leaks have developed and the existing heat exchangers are fouled. It’s also
possible that the glycol currently in the heat recovery system needs to be replaced.
5.0 PRELIMINARY EQUIPMENT SELECTIONS
The following initial equipment selections are sized and selected based on preliminary data
and will require minor modifications to reflect final design.
5.1 Expansion Tank
Total heat recovery loop volume is approximately 400 gallons. Pressure relief at the power
plant heat exchanger will be 45 PSIG and the maximum normal operating pressure will be 40
PSIG.
ET-1:System requirements: 80 gallon tank and 41 gallon acceptance
Select: Extrol ST-210V, 86 gallon tank and 46 gallon acceptance
5.2 GLYCOL MAKEUP
The existing glycol make-up system at the washeteria will be adapted to accommodate filling
the system and adding additional glycol.
5.3 CONTROLS
Heat recovery system will use an off the shelf differential temperature controller to actuate a
3-way valve and start/stop heat injection pump (if used). Control will provide load shedding,
freeze protection, and prevent backfeeding of boiler heat into heat recovery system. In
addition, A BTU meter will be provided at each facility using recovered, displaying
instantaneous temperatures and heat transfer, as well as totalizing BTUs used.
Differential Controller: Tekmar Model 155 differential temperature control
Control Valve:
CV-1 AVEC: 4” 2-way motorized control valve with 24v modulating actuator
BTU Meter:
BTU-1 WTP: KEP BTU meter with 2” magnetic flow meter and matching temperature
elements.
BTU-2 Store: KEP BTU meter W/ 1-1/2” magnetic flow meter and matching temperature
elements.
Pump:
P-HR1: Grundfos UPS43-44
6.0 CONCLUSIONS AND RECOMMENDATIONS
Estimated construction costs were determined based on prior recent heat recovery project
experience, and include materials, equipment, freight, labor, design, construction
management, and startup and testing. All work at the power plant and WTP/W, along with
design and construction management/administration for the complete project, is included in
the Base Project cost. Incremental costs for arctic pipe, end-user building renovations, and
overhead and freight are estimated individually for each of the other end-user buildings (refer
to attached cost estimate).
The estimated project cost for is $172.700. Estimated annual fuel savings are 7700 gallons.
Using a 2011 fuel price of $4.01/gallon results in an estimated annual community savings of
$31,000 for a simple payback of 5.6 years.
Funding for design and construction isn’t expected before fall 2013, with construction
occurring summer of 2014. With 2 years of escalation at 3%, the estimated project cost in
2014 is 183,200.
150200250300MBTU/HRMarshall Recovered Heat Utilization050100January February March April May June July Aug Sept Oct Nov DecMONTHCommercial Store Heat Load (MBH) WTP Bldg Heating Demand (MBH) Available Recovered Heat
400600800100012001400GALMarshall Recovered Heat Utilization7700 Gal Recovered Heat0 gal Boiler Heat0200400January February March April May June July Aug Sept Oct Nov DecMONTH
ANTHC DEHEDivision of Environmental Health & EngineeringAlaska Native Tribal Health Consortium1901 Bragaw Street, Suite 200Project Name:Marshall Heat Recovery ProjectANCHORAGE, AK 99503Project Number:TBD(907) 729-3609Engineer:WLFChecked:________FAX (907) 729-3729Revision Date:e-mail: william.fraser@anthc.orgPrint:File: C:\Documents and Settings\william.fraser\Application Data\OpenText\DM\Temp\[DEHE-#201983-v1-Marshal_Heat_Recovery_Calcs.XLSX]Sheet1Find:Feasibility of Heat Recovery from Quinhagak Generator Facility to existing Utility BuildingGiven:Monthly KWH produced by existing Quinhagak generator plant in 2011Heating Degree Days for QuinhagakWell Heat Add HX30.0MBH WTP HR HX222.6MBHTank Heat add HX24.0MBH AVEC HX359.2MBHSouth Loop Heat Add HX72.7MBHNorth Loop Heat Add HX57.0MBH Fuel Cons6191Gal / yrHUD Head Add HX18.4MBHAssumptions:Estimated Peak heat loss for 1 WSTs:30,000BTU/Hr Estimated Peak Heat Loss for Watering Point Bldg20,000BTU / HrEstimated Peak heat loss for WTP Bldg40,000BTU/Hr Estimated Peak Heat Loss for Store50,000BTU / HrEstimated Peak Heat Loss for Garage30,000BTU / HrDesign Air Temperature:-35Deg FDesign Water Temperature40Deg FDesign Glycol Heat Trace Temperature70Deg FWTP buidling Space temperature65Deg FHeat Recovery Operating Temperature180Deg F1380 BTU to radiators / KW Power Generated (conservative number)Estimated Boiler AFUE:72%Community Estimated Fuel Price:$4.03per galHeat loss per below calculationsAVEC Estimated Fuel Price$4.03per galHeat loads per below calculationsAVEC Heat Sales Agreement:30%Avoided fuel cost at AVEC's PriceRaw water production occuring in summer months only (seasonal water supply)Frozen Soil Conductivity0.12(Between 0.05 & 0.15 BTUH/Ft)Above Ground Heat Recovery System in Arctic PipeCalculations:Utility Building Heat Loss:Generator Module Heat LoadsBuilding design heating loss:40,000BTU/HHeat loss / degree of OSA temp 400.0 BTH/H* Deg FWatering Point Bldg Heat Loss:Building design heating loss:20,000BTU/HHeat loss / degree of OSA temp 200.0 BTH/H* Deg F Living quarters design heat loss20000BTU/HrGarage Bldg Heat Loss:Storagemodules Heat Loss30000BTU/HrBuilding design heating loss:30,000BTU/HHeat loss / degree of OSA temp 400.0 BTH/H* Deg F Total 50000 BTU/HrHeat loss / degree of OSA temp: 455 BTU/Hr* deg FCommunity Store Heat Loss:Building design heating loss:50,000BTU/HHeat loss / degree of OSA temp 476.2 BTH/H* Deg Fdesign conditions was assumed based onsmall footprint buildings with poor insulation and highinfiltration. Design conditions were based on OSA temp of50F16-Jul-126-Sep-12
ANTHC DEHEDivision of Environmental Health & EngineeringAlaska Native Tribal Health Consortium1901 Bragaw Street, Suite 200Project Name:Marshall Heat Recovery ProjectANCHORAGE, AK 99503Project Number:TBD(907) 729-3609Engineer:WLFChecked:________FAX (907) 729-3729Revision Date:e-mail: william.fraser@anthc.orgPrint:File: C:\Documents and Settings\william.fraser\Application Data\OpenText\DM\Temp\[DEHE-#201983-v1-Marshal_Heat_Recovery_Calcs.XLSX]Sheet116-Jul-126-Sep-12Calculations (Continued)Buried Water Main Heat Loss:Above Ground Heat Recovery Heat LossDesign Air Temperature40Degrees FDesign Ground Surface Temperature10Degrees F Design Heat Recovery loop Temperature180Degrees FInsulation:3Inch foam ins. Design Air Temperature:35Degrees FCarrier Pipe:4Pipe OD (Inches) Insulation:1Inch foam ins.Insulation K value0.017BTUH / (ft x DegF) Pipe:4Pipe OD (Inches)Ground K value0.12BTUH / (ft x Deg F) Insulation K value0.16BTU x in / (ft^2 x hr x Deg F)Pipe R value = 8.579 Ft x hr x Deg F R value = 4.840 Ft^2 x hr x Deg FDepth of Bury =5.0feet Length of Above ground Pipe150FtBuried Pipe11500Ft Design Heat Loss: 6,977 BTU/hrDesign Heat Loss: 61,034 BTU/hr 46.52 BTUH/ftHeat Loss / Foot 5.31 BTU/hr Heat Loss / Degree OSA temp 32.5Heat Loss / Degree OSA temp 1,526Buried Heat Recovery Pipe Heat Loss:Design Air Temperature35Degrees FAbove Ground Well Line Heat LossDesign Ground Surface Temperature10Degrees FInsulation:1.05Inch foam ins.Design Heat Recovery loop Temperature80Degrees F Carrier Pipe:2Pipe OD (Inches)Design Air Temperature:35Degrees F Insulation K value0.017BTUH / (ft x DegF)Insulation:3Inch foam ins. Ground K value0.12BTUH / (ft x DegF)Pipe:8Pipe OD (Inches) Pipe R value = 6.721 Ft x hr x Deg FInsulation K value0.16BTU x in / (ft^2 x hr x Deg F) Depth of Bury =2.0feetR value = 6.680 Ft^2 x hr x Deg F Buried Pipe700FtLength of Above ground Pipe400Ft Design Heat Loss: 18,078 BTU/hrDesign Heat Loss: 14,422 BTU/hr Heat Loss / Foot 25.83 BTU/hr36.05 BTUH/ft Heat Loss / Degree OSA temp 84Heat Loss / Degree OSA temp 125.4Peak Storage Tank Heat Loss:40,000BTU / HrParasitic Generator Cooling System LossesHeat Loss / degree of OSA temp: 533 BTU / Hr Design Air Temperature:35DegFAMOT valve leak Rate (average)1GPMHot CoolantTemperature180DegFDesign Heat Loss: 15930 BTU/HrHeat loss / Degree of OSA temp: 74.1
ANTHC DEHEDivision of Environmental Health & EngineeringAlaska Native Tribal Health Consortium1901 Bragaw Street, Suite 200Project Name:Marshall Heat Recovery ProjectANCHORAGE, AK 99503Project Number:TBD(907) 729-3609Engineer:WLFChecked:________FAX (907) 729-3729Revision Date:e-mail: william.fraser@anthc.orgPrint:File: C:\Documents and Settings\william.fraser\Application Data\OpenText\DM\Temp\[DEHE-#201983-v1-Marshal_Heat_Recovery_Calcs.XLSX]Sheet116-Jul-126-Sep-12Calculations (Continued)Month KWH / Month Days / Month Av KWHtg DegreeDays / Month(40F)Htg DegreeDays / Month(60F)Htg DegreeDays / Month(180F)EstimatedMBTU/Hrejectedfrom EnginesParasiticCoolingSystemLosses (MBH/ Hr)EstimatedAvailableHeat forrecovery(MBH/ Hr) MonthAVECFacilityHeating load(MBH/Hr)Above GroundPipe Loss(MBTUH)SumTransmissionLosses(MBTUH)January 170411 31229 1,1871,8075,527 316 13303January26 1541February 146159 29196 1,0721,6525,132 271 13258February26 1541March 158538 30213 1,0031,6035,203 294 13281March24 1539April 137902 30185 6421,2424,842 256 12244April19 1432May 132516 31178 1587784,498 246 11235May11 1224June 109868 301484354,035 204 10194June7 1118July 120010 311613104,030 223 10213July5 1115Aug 120878 311623754,095 224 10215Aug5 1117Sept 128514 301735944,194 239 10228Sept9 1221Oct 143617 31193 4841,1044,824 267 12255Oct16 1329Nov 151550 30204 8461,4465,046 281 12269Nov22 1436Dec 157358 31212 1,1321,7525,472 292 13279Dec26 1541MonthCommericalStore HeatLoss Total (MBH) MonthWTP BuildingHeat Loss(MBH)WateringPoint Htg Load(MBH)GarageBuildingLoad (MBH)WST HeatLoss (MBH)Circ LoopHeat Add(MBH)Well LineHeat AddSum HeatDemandJanuary2828January23 12 15 20 58 5134February2727February23 11 15 20 56 5130March2525March21 11 13 18 51 4118April2020April17 8 9 11 33 380May1212May10 5 2 3 8 128June77June6 30 09July55July4 20 06Aug66Aug5 20 07Sept99Sept8 40 012Oct1717Oct14 7 6 8 24 262Nov2323Nov19 10 11 15 43 4102Dec2727Dec23 11 15 19 56 5128WTP Building Heat LossRecovered Heat Transmission Losses:AVEC Available Recovered Heat EstimateAuxilliary Heat Loads
ANTHC DEHEDivision of Environmental Health & EngineeringAlaska Native Tribal Health Consortium1901 Bragaw Street, Suite 200Project Name:Marshall Heat Recovery ProjectANCHORAGE, AK 99503Project Number:TBD(907) 729-3609Engineer:WLFChecked:________FAX (907) 729-3729Revision Date:e-mail: william.fraser@anthc.orgPrint:File: C:\Documents and Settings\william.fraser\Application Data\OpenText\DM\Temp\[DEHE-#201983-v1-Marshal_Heat_Recovery_Calcs.XLSX]Sheet116-Jul-126-Sep-12Calculations (Continued)MonthEstimatedAvailableHeat forrecovery(MBH)CommercialStore HeatLoad (MBH)WTP BldgHeatingDemand(MBH)Total HeatDemand(MBH)RecoveredHeat Benefit(MBH) MonthStore FuelDemand(Gal)WTP FuelDemand (Gal)Total FuelDemand (gal)RecoveredHeat AvoidedFuel Use (Gal)RecoveredHeatAvoidedFuel Cost(Dollars)RecoveredHeat Charges(Dollars)Savings toCommunity(Dollars)January 262 28 134162 162January214 1,033 12471247$5,025 $1,508 $3,518February 217 27 130157 157February196 936 11311131$4,560 $1,368 $3,192March 243 25 118144 144March190 884 10741074$4,328 $1,298 $3,030April 212 20 80100 100April147 598 745745$3,003 $901 $2,102May 212 12 2840 40May92 218 310310$1,249 $375 $874June 176 7 916 16June52 65 116116$469 $141 $329July 198 5 611 11July37 46 8383$334 $100 $234Aug 198 6 713 13Aug44 56 100100$405 $121 $283Sept 207 9 1221 21Sept70 89 159159$641 $192 $449Oct 226 17 6279 79Oct131 476 607607$2,445 $734 $1,712Nov 233 23 102125 125Nov171 760 931931$3,752 $1,126 $2,626Dec 238 27 128155 155Dec208 989 11971197$4,823 $1,447 $3,376Total:1552 6149 7701 7701 $31,035 $9,310 $21,724Available Recovered Heat Estimated Fuel Savings
Qty Rate 130 106 117 115 127 126 85 108 35 35 35 LaborCivil80 8 0.0-$ Site Visit 0 1,100$ -$ Mechanical184 8 20.016,000$ Site Visit 2 1,100$ 2,200$ Electrical88 8 5.04,000$ Site Visit 1 1,100$ 1,100$ DesignTotal hours 0.0 85.0 0.0 0.0 127.5 225.0 8.0 0.0 20.0 0.0 200.0MobilizationEquipment Shipping 0.0-$ -$ -$ Takeoffs 1 1 1.0 1 12,530$ -$ -$ Training 1 1 1.0-$ -$ -$ Materials Receiving and Inventory 1 1 1.0 1 1 0.22,700$ -$ -$ Set up Materials Storage/Yard 1 1 1.0 0.5 0.5 0.21,435$ -$ -$ Expediting to Const Site 0.0-$ -$ -$ HousingLocal Rental-$ Rental 14 200$ 2,800$ 2,800.00$ Camp set up 1 1 1.0 1 12,530$ -$ -$ -$ -$ -$ Cooling sys modifications 5 1 5.0 0.2 0.5 1 112,285$ Pipe & Fittings 1 10,000$ 10,000$ 2,000$ 12,000.00$ Controls 1 1 1.0 0.5 23,070$ Controls 1 12,000$ 12,000$ 300$ 12,300.00$ Make-up / Expansion Tanks 0.0-$ Tank -$ -$ Insulation Upgrades 3 1 3.0 1 25,880$ Insulation 1 1,000$ 1,000$ 300$ 1,300.00$ -$ -$ -$ Heating sys modifications 3 1 3.0 1 14,830$ Pipe & Fittings 1 4,000$ 4,000$ 500$ 4,500.00$ Controls 1 1 1.0 11,270$ Controls 5 500$ 2,500$ 100$ 2,600.00$ -$ -$ -$ Connection and install 2 1 2.0 1 1 0.1 15,930$ BTU Meter 2 2,500$ 5,000$ 150$ 5,150.00$ Programming and interface 1 1 1.0 11,060$ Flow meter 2 2,500$ 5,000$ 150$ 5,150.00$ -$ -$ -$ Glycol 1 1 1.0 1 0.21,430$ Glycol 8 1,100$ 8,800$ 1,000$ 9,800.00$ -$ -$ -$ Literature and References 2 1 2.0 12,120$ Publishing 4 500$ 2,000$ 100$ 2,100.00$ Training 1 1 1.0 1 21,760$ -$ -$ -$ -$ -$ -$ Preliminary Clean Up 0.0-$ -$ -$ Final Inspection Punch List 1 1 1.0 1 1 1 13,940$ -$ -$ Local PlumberLABORMarshal Heat Recovery Cost EstimateMechanicItemOperatorTotalFixed estimate @ 100 /hr.Crew Lead20,000$ *NoteMATERIALSElectricianSuperMarshall Heat Recovery Cost EstimatePlumbershippingBTU Meter installFixed estimate @ 100 /hr.Fixed estimate @ 100 /hr.Support ActivitiesLocalLabor Local OperatorProductionRateDesignStartup and Operator Training.WTP BLdg ConnectionELEMENTPower Plant ModificationsJob Clean Up/ Final Inspection*NoteFreightMaterials+ FreightDays(60hr.Week)EngineerNo. Cost Ea Total Cost
Final Clean Up 3 1 3.0 0.25 1 15,783$ -$ -$ -$ -$ -$ Pack Up and Crate 1 1 1.0 11,260$ -$ -$ Shipping 1 1 1.0-$ -$ 1,000$ 1,000.00$ -$ -$ -$ -$ -$ Financial Close out/ Auditing 1 1 1.0 11,060$ -$ -$ As builting 1 1 1.0 11,060$ -$ -$ -$ -$ -$ 61,933$ 53,100$ M+F total 58,700.00$ 85,233$ 120,633$ 143,933$ 172,719$ 2 years escalation @ 3% / year 10,519$Total 183,238$$31,035.005.57 yrsAll + contingencySimple Payback (without escalation)Labor + Mat + Frgt + DesignTotal LaborLabor + Materials + FreightTotal MatDe-MobeFinalEstimated annual savingsAssumptions:- Local accomodations are available.- All exterior piping run on sleepers above grade.- Power plant is mostly configured and equiped.- System control can be accomplished w/o a panel.- Crew leader functions will be accomplished by Superentendant, or in lieu of Super.With Design