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Monday, August 19, 2019

I AM STARTING MY PREVIOUS PROJECTS SINCE AND DURING YEARS 1973-1975, 1979-1988, 1989-1990, 1991, JANUARY UP TO OCTOBER 31, I AM PAIPIN CHEN.


DATE: August 19, 2019,MONDAY.
PRIMARY: “ MISSION ESSENTIAL, ESSENTIAL AND GENERAL, INC.”- FOR CURRENT AND COMING YEARS.
PAI PIN CHEN, INTERNET.
NYSEASIA, NYPEASIA, NYCEASIA/Special Project Related

Date: August 19, 2019, MONDAY.         Memo.#1          PPC/ADSC/PCA

Subject: M&E Design Data Bank

RE: Gen.Set

HVAC questionaire to be issued to Electrical Department

Project:

Date:

HVAC Project Engineer:

Electrical Project Engineer:

A.           Engine

1.           Engine Generator Capacity (full load KW)

2.           Type of Engine:

a.           Gas.

b.          Diesel.

c.           Turbine.

d.          Other.

3.           Engine generator make design will be based on:

4.           Engine generator overall sizes:

a.           Length:

b.          Width:

c.           Height:

5.           Number of engines generators working simultaneously:

B.           Fuel System

1.           Is transfer pump part of and mounted on engine?

a.           Max. total suction head (ft) (lift and line resistance)

b.          Capacity (gpm)

2.           a.   Is day tank part of engine:

c.           size:

d.          Controls furnished with day tank:

(1)           High Alarm

(2)           Pump Off.

(3)           Pump on.

(4)           Low Alarm.

e.           Pipe connection sizes:

(1)           Suction.

(2)           Return.

(3)           Overflow (if Required).

3.           Day tank furnished separately:

4.           Size per engine (gal)

5.           Fuel oil pumping rate per engine.

6.           Type of fuel.

7.           Other:

C.           Radiator

1.           Radiator & fan mounted on engine block skid (engine drives radiator fan).

a.           Comes all inter-connecting piping between radiator & engine with the unit.

b.          If not what external piping has to be furnished?

c.           Are vibration isolators for engine block skid to be furnished separately?

2.           Radiator and fan remotely located from engine (but in same room).

a.           Radiator cooling water pipe connecting sizes.

b.          Cooling water flow:   gpm

c.           Location of radiator.

d.          Radiator make design will be based on:

3.           Radiator and fan remotely located from engine (outside of engine room).

a.           Location.

b.          Elevation of radiator in relation to engine (ft.).

c.           Radiator cooling water pipe connecting sizes.

d.          Cooloing water flow (gpm).

4.           What equipment is part of radiator?

a.           Surge tank.

b.          Ventiline from radiator to surge tank.

c.           Vacuum breaker.

d.          Thermometer wells.

e.           If surge tank is not part of radiator furnished by radiator manufacturer what size is required?

D.           COOLING WATER SYSTEM

1.           Volume

a.           Engine only (gall.)

b.          Radiator for max. ambient of 110 deg. F.

c.           Radiator for max. ambient of 125Deg. F. (gal).

2.           Water pump performance (pump furnished with engine).

a.           Is pump mounted on the engine.

b.          Jacket water

(1)   capacity at     ft.. (gal)

(2).   Capacity at    ft.

(4)           Maximum allowable static head (ft).

(5)           Cooling water pipe connecting sizes.

(6)           Internal pressure drop through equipment.

3.           Auxiliary water

a.           Lub oil cooler.

(1)   Capacity at    ft.   (gal).

(2)              Capacity at 0 ft  (gal).

(3)              Max. allowable static head (ft).

(4)              Cooling water pipe connecting sizes.

(5)              Internal pressure drop through equpment (ft).

         b.,   Other (     )

              (1)   Capacity at    ft.  (gal).

(2)           Capacity at 0 ft.  (gal).

              (3).   Max. allowable static head (ft).

(3)           Cooling water pipe connecting sizes.

(4)           Internal pressure drop through equipment (ft).

4.           Maximum system pressure (psi).

a.           Water jacket.

b.          After cooler.

c.           Radiator.

d.          Lub oil cooler.

e.           Other (   )

5.           Can heat exchange be mounted on the engine and be part of it?

a.           Size.

b.          Capacity.

c.           Connecting pipe sizes.

E.           Heat Rejection

1.           To jacket water (including standard mainfold, after cooler, oil cooler )

(Btu/min)

2.           Maximum jacket water temperature (Deg.F).

3.           Radiator data

a.           Air flow through radiator with air entering radiator at:

(1)           95Deg.F  (CFM)

(2)           105 Deg.F. (CFM)

(3)           110 Deg.F. (CFM)

(4)           120 Deg.F (CFM)

l  HVAC design guide calls for 110deg. F. entering temperature when radiator is in the same room as tne engine.

b.          Maximum allowable external static pressure at discharge side of radiator (in”).

F.            ENGINE ROOM VENTILATION REQUIREMENTS

1.           COMBUSTION AIR REQUIREMENTS AT 85Deg.F.

2.           Heat radiated by engine   (btu/min)

3.           Heat dissipated by generator (Btu/min).

4.           Ventilation requirements (based on 15Deg F. Delta T) (CFM) (engine and generator radiated heat only).

G.           EXHAUST SYSTEM

1.           Gas Volume  (CFM).

2.           Gas temperature (Deg.F).

3.           Max. permissible back pressure (in).

4.           Exhaust pipe size connection at engine.

5.           Exhaust pipe size based on:

a.                           ft straight horizontal pipe.

b.                           Ft vertical pipe.

c.                           Elbows.

6.           Muffler Data

a.           Size.

b.          Weight.

c.           Flexible Connection (by whom).

7.           Exhaust stack size bases on:

a.              number of engines operating simultaneously.

b.                  Ft straight  horizontal pipe.

c.              Ft   vertical pipe.

d.              Elbows.

8.           Crank-case breather vent piping.

a.              connecting size at engine.

b.              Pipe size.

H.           DIESEL LUBRICATING SYSTEM REQUIREMENTS

1.           Is pump mounted on engine and part of package?

a.           Pump Capacity:

(1)           gpm.

(2)           Head (ft)

2.           Flow gpm.

3.           External pipe size requirements.

4.           Storage or reservoir capacity (gal)

I.             STARTING SYSTEM

1.           Air system.

a.           Min. air pressure required at motor (psi).

b.          Max. air pressure allowed at motor (psi).

2.           Others.

File:TTII.PPC.Memo.#36.10.08.99

CC: PM of each Trade





TTII/Special Project Related

________________________________________________________________

Date: AUGUST 19, MONDAY, 2019.        Memo.#2       PPC/ADSC/PCA

Subject: M&E Design Data Bank

Re: Em. Gen. Set

__________________________________________________________

1.           GENERAL

The intent of this Design Guide is to outline the procedure to follow in designing standby power plants for use as an alternate source of power in the event of failure of the normal electrical service. It does not cover other alternate sources of power which may be required or permitted by Code (i.e., battery system, tapping ahead of main switches of two separate services, etc.). Costs are also not included as they will vary with each project.

2.           CRITERIA

a.           Tabulate the load which is to be on the emergency system. Include the following:

(1)           Minimum emergency loads required or recommended by Code:

(2)           Emergency loads required for standby power plant auxiliary equipment, including:

(3)           ADDITIONAL EMERGENCY LOADS REQUESTED BY Owner.

(4)           Additional emergency loads recommended by Consultants, PPC/ADSC and approved by Owner.











                                      

b.          List the sum of loads from 'a" above as follows:

_____________________________________________________

EMERGENCY LOADS  HP  KW  P.F.  KVA  D.F.  DEMAND

                                                 KVA

______________________________________________________

(a).Sum of incandescent            1.0

lighting loads

(b).Sum of electrical                1.0

heating loads

©. Sum of fluorescent

and mercury loads                  .9

(d). Individual motor

loads (2)

















TOTALS

            Conn. HP:    

                     Conn. KW:    

                               Conn. KVA:   

                                         Demand KVA:     

___________________________________________________________

Notes:

(1)           Power factors for motors normally vary from .80 to .95.

(2)           List only the largest motors that are to operate on emergency simultaneously.

(3)           HP x .746/ Motor Efficency = KW; KW/P.F. =KVA;

KVA x D.F. = Demand KVA

P.F. (System) = KW (Conn.)/ KVA (Conn.)

c.           Using the demand KVA and system power factors obtained in 'b" above, select the generator as fellows:

(1).   Add spare (as required).

(3)            Subtract any loads included in 'b' which will be put on emergency manually only when the load conditions allow it (selective loading).

(4)           Select next higher size generator (continuous rating) available from at least three of the base bid manufacturers listed.

(a)           Ideal.

(b)          Electric Machinery

(c)           Delco.

(d)          G.E.

(e)           Century.

(f)           Westinghouse.

             (5).   Using selected generator, calculate voltage dip due to starting of single motor, ( or simultaneous starting of group of motors) with largest locked rotor KVA. Use manufacturer's tables for calculating dip. If dip exceeds 5%, recalculate based on next higher generator size or investigate use of reduced voltage starters on the motors.

             (6).    Determine generator output voltage by weighing the following factors:

(a)           Normal operating voltage(s) of equipment on emergency.

(b)          Cost, space and weight of transformers.

(c)           Cost of, and spare required for , distributing wiring.

             (7).    Size generator 3 phase main fused switch or circuit breaker as follows:

(a)           Continuous current rating:

I = KVA Gen./(1.732 x E Gen. Line to Line)

(b)          Interrupting Rating: Determine from generator manufacturer maximum three phase fault current available and rate accordingly.

             (8).   Generator grounding : For normal applications , directly

                   grounded wye connection and frame of generator to cold

                   water main or driven ground rods. Where generator line to

                   ground fault current exceeds three phase fault current

                   either:

(a)           Specify generator capable application of withstanding greater fault current and increase interrupting rating of generator  main fused switch or circuit breaker accordingly, or

(b)          Furnish a low-value reactor or resistor in ground conductor which will limit line to ground fault current to a value between 25% and 100% of three phase fault current.

(9)           Check Code regulations on generators:

(a)           Taichung, Taiwan: Article ?

(b)           Taiwan :  NFPA # ?, Article ?

(c)           National: NFPA #? , Article ?

d.            Select engine as follows:

(1)     Determine type of engine and fuel to be specified, using the following as a guide:

     (a).   Diesel engine:  Most commonly used, most familiar to maintenance engineers, large selection of sizes. Howerever, require inertia block. Specifify at highest speed available in order to reduce weight weight and cost. Specify for use with #2 diesel oil (lowest sulphur content fuel commonly available).

(c)           Gasoline Engine:

(d)          Natural Gas:

(e)           Turbine:

(2)   Determine basic engine BHP required for selected generator as follows:

BHP = Generator KW (continuous rating)/ (.746 x Generator Full Load Efficiency*)

l  Normally varies from .9 to .96.

Verify from at least three of the base bid manufacturers indicated below that engine furnished for selected generator has a BHP equal to or greater than that calculated.

BASE BID MANUFACTURER       Range of equipment available

                                  ( Continuous KW @ .8 P.F.)

                Diesel      Gasoline    Nat. Gas   Turbine     RPM



(a) Onan         3-450        --         --          --        1800

(b) GM          20-750                                      1800

750-2500                                                                                                                                     900

(c) Cummins      %0- ?                                        1800



Refer to Manuf. List and Data

(3)   Check Code regulations on combustion engines and turbines:

(a)           NYC: Building Code, Article ?

(b)          Natioanal :  NFPA #37.

(c)           Taiwan :  

e.           Size fuel oil storage tanks (the fuel oil system should be specified under HVAC Work. Coordinate.) as follows:

(1)           Minimum 24 hour capacity.

(2)           Diesel engine fuel consumption rate: Approximately 1/10 gallon /KW/Hr.

(3)           For other engines, refer to manufacturer’s ratings.

(4)           CheckmCode regulations on fuel oil systems:

(a)           NYC : Building Code Section :

(b)          National: NFPA #

(c)           Taiwan:

f.           Determine air requirements for combustion and cooling in conjunction with HVAC Departmrnt and as follows:

(1)           Air (cooling) :  from manufacturer’s data, get information for CFM of air required to cool engine block and cool radiator water. Room temperature not to exceed 110 Deg. F; base on design condition of 95 Deg. F outside air.

(2)           Air (combustion) : CFM = 4 x KW (for diesel engines; for all others refer to manufacturers data).

(3)           Air (total ) = Air (cooling) + Air (combustion).

(4)           Determine function and type of radiator fan with HVAC Dept.:

(1)           Mounted on engine shaft or remotely.

(2)           Cooling water only or cooling water and exhaust air from engine-generator room. Cooling water = Jacket and aftercooler water.

(3)           For remote radiator installations:

(a)           Provide flexible connections for piping.

(b)          Provide expansion tank mounted above radiator.

(c)           Avoid mounting radiator more than 50” above engine-generator since the fittings for the cooling system are not rated for any greater pressure head. If radiator is located more than 50’ above engine-generator, provide heat exchanger between radiator and engine.

(4)           Base bid manufacturers for remote radiator installations:

(a)           Perfex

(b)          Young

(5)           In lieu of remote radiator investigate use of cooling tower or heat exchanger.

(6)           Select type of silencer (coordinate with acoustical consultant):

(1)           For turbocharged engine exhausts – low degree type:

(a)           Industrial areas – Similar to Max.

(b)          Semi-industrial areas – similar to Max.

(c)           Residential or hospital areas – similar to Max.

(2)           for naturally aspirated engines, intakes and exhausts- medium degree type:

(a)           Industrial areas – similar to Max.

                                    (b).  Semi-Industrial areas – similar to Max.

(d)           Residential or hospital areas – similar to

     Max.

(3)           For critically quiet areas- high degree type – similar to Max.

(4)           Coordinate exhaust piping from silencer with HVAC Dept. (See trade coordination sketch).

(5)           Base bid manufacturers:

(a)           Maximum.

(b)          Burgess- Manning.

(c)           Kitell.

(d)          Koppers.

i.          Select type of batteries for engine –cranking or turbine starting system.

(1           Lead-acid type:  Less expansive than nickel cadmium (15%); battery life slowly deteriorates; life expectancy of about five (5) years.

(2)           Nickel Cadmium type: More Costly, Lighter and smaller than lead-acid type; Life expectancy of about twenty years; deteriorates quickly upon  reaching life expectancy.

(3)           Size, number and voltage of batteries are dependent upon the following and the engine manufacturer should recommend batteries suitable for these parameters.

(a)           Engine or turbine breakaway current.

(b)           Engine or turbine spinning current.

(c)           Number of consecutive starts.

(d)           Ambient temperature.

(4)           Base bid manufacturers:

(a)           Nife.

(b)          Exide.

(c)           Gould.

(d)          C&D.

j.          Miscellaneous:

(1)           Determine location and type of engine –generator set controls, meters and alarms.

(2)           Determine maximum elapsed time to deliver full load (normally 15 seconds, hospitals 10 seconds).

(3)           Investigate use of load banks for testing. (coordinate with HVAC for ventilation.)

(4)           Furnish normal power supplies for the following equipment associated with the standby power plant:

(a)           Jacket water heater.

(b)          Unit Heater.

(5)           Furnish battery operated emergency lights for engine-generator room.

(6)           Investigate use of enclosure (if an outdoor units, with pitched roof and gutters).

(7)           Coordinate with HVAC department (see Trade Coordination Sketch, type, size and location of flexible connections for:

(a)           Fuel oil piping.

(b)          Exhaust piping.

(c)           Direct duct connections.

(d)          Silencer drain connection.

(8)           Coordinate noise and vibration control requirements with acoustical consultant, (in NYC, also comply with Building Code Section) including the following:

(a)           Inertia blocks.

(b)          Vibration eliminators.

(c)           Type of silencer.

(d)          Baffles for air intake and exhaust.

(e)           Sounding of enclosure and/or room.

(9)           Coordinate Standby Power Plant room floor drains with Plumbing Department (See Trade Coordination Sketch).

3.           PHYSICAL CRITERIA

A.           Criteria for Locating Equipment:

(1)           Prior to establishing location of equipment, consider effects on the following:

(a)           Space for ventilation and piping requirements.

(b)          Noise and vibration to surrounding areas.

(c)           Structural support of equipment.

(d)          Proximity  toemergency load center (locate engine-generator as close as possible).

(e)           Maintenance( accessibility and ease of repair).

c.           Determine Space Required:

(1)           Investigate largest dimensions available from base bid manufacturers (at least three) for equipment selected in paragraph 1. Confirm catalog data with manufacturers.

(2)           Make layout plan and section to scale through engine-generator room and indicate operating weights (i.e., radiator with water) of all equipment. Forward drawing to Architect and Structural Engineer for approval. Include the following;

(A)           Engine-Generator (with enclousure if used).

(B)            Base (Standby Plant steel base on concrete pad).

(C)            Radiator and piping.

(D)           Battery rack.

(E)            Day tank.

(F)            Fuel oil storage tank, pumps and piping.

(G)           Silencer and exhaust piping.

(H)           Controls and switchgear.

(I)              Openings for related ductwork, louvers, piping and conduits.

(J)             Location of drains for engine-generator room and from silencer.

(K)           Miscellaneous (i.e., rectifiers, unit heaters, transformers, load banks, etc.).

(3)           Maintain minimum clearance around engine-generator set as follows:

(a)           Engine end:  2’-6”

(b)           Generator ends:  4’-0”

(c)           Sides: 3’-0”

(d)           Top:  (Check clearance for silencer, cylinder removal, piping, ductwork, etc. Avoid any unnecessary ducts, piping and equipment above engine.)

(e)           If unit has enclosure, swing of panels may increase minimum clearance of (a),(b),and (c) above.

(f)            Include space and weight allowances for any future equipment.

(4)           Include space and weight allowances for any future equipment.

(5)           Rigging space- clear path for equipment entry to room and check structural capability of holding weights. If existing building, survey route and alert Architect of existing utilities and other obstructions which must be disconnected and/or removed.

Also, verify adequate space for possible later removal of largest piece of equipment for maintenance.

4.           FILING REQUIREMENTS

A.           NYC

(1)           Building Department:

General.

Fuel oil tank, fill and vent lines.

Fuel oil piping (if above grade).

Exhaust.

(2)           Con Edison:

Single Linediagram.

Letter of Intent from owner.

(3)           Bureau of Gas and Electriccity:

Generator main protective device (if over 1000 KVA total capacity)

b.          Other areas: Check local requirements.

c.           Do not test installation of standby power plant until all approvals have been received from local authorities.

J.              





5.           PHYSICAL CRITERIA

6.           FILLING REQUIREMENTS

PS: FOR YOUR, AND MY PROJECTS, PLEASE CONTACT ME VIA MY EMAILS:

I.                 NYSEASIA@GMAIL.COM.

II.                NYSEASIA@YAHOO.COM.

III.             NYSEASIA@AOL.COM.

IV.            NYSEASIA@YAHOO.COM.

THANKS.PAIPINCHEN.COM.

August 19, 2019, MONDAY.

END.




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