Various units and their relationship used in power plant

Energy Conversion :    1HP(Horse power) = 746 Watts = 0.746 Kilo Watts
1 Joule = 1 watt-second
1 kWh = 1 kW × 1 hr = 1000 watts × 3600 seconds
            = 36 × 105 joules =3,412 Btu = 860 kcal
            = 1Unit of electricity
1 Watt = 3.412 Btu/hour
1 Calorie = 4.184 Joules
1 kcal/Kg = 1.8 Btu’s/lb.
1 Btu = 252 Calories = 1,055 Joules
1 Million Btu = 293.1 kWh
1 Btu/lb. = 2.3260000 kJ/kg = 0.5559 Kilocalories/kg
1Chu ( Centigrade Heat Unit)= 1.8Btu = 1899 joules
1 Therm = 10,54,80,400 joules  = 100,000 Btu (British Thermal Units)

 Mass Conversion :       1 kgf (kilogram-force )= 9.8 N (Newtons)
1 lb = 0.45359237 kg
1 kg = 1000g = 2.20462262 lb

Pressure Conversion : 1 bar =  105 Pa(Pascal)  =  1.01 kg/cm2 
                                                          =  14.50 psi (pound per square inch)
1 kg/cm2  =  0.98 bar =  980.665 mbar (milli bar) =  98.06 kPa = 0.098 MPa
     =  10000 mmwc (mm of water column)
     =  735.56 mm-Hg  =  29 in-Hg
                          =  14.22 psi (lb/in2)
 1 atm (atmospheric pressure) =1.033kg/cm2 = 1.012bar

Temperature Conversion : Centigrade degrees = (5/9)  ×  (Fahrenheit degrees - 32)
   Fahrenheit degrees = (9/5)  ×  (Centigrade degrees) + 32
   Kelvin degrees = Centigrade degrees + 273

Volume Conversion : 1 gallon = 3.78541 litre
       1 m3  = 1000 litre

Length Conversion :    1 meter = 100 cm = 3.28084 feet = 1.09361 yard = 39.3701 inch
1 foot = 12 inch
1 yard = 36 inch = 3 feet
               1 inch = 2.54 cm 
1 mile = 1609.34 meter

Multipliers :    Mega = 106
Giga = 109
Tera = 1012
Centi = 10-2
Milli = 10-3
Micro =10-6
Nano = 10-9
Pico = 10-12

Comments

Post a Comment

Popular posts from this blog

Introduction to thermal power plant

Image
Electricity is everywhere but most of the people does not know how it is produced. Let's introduce about the power generation factory “the thermal power plant”.  Thermal power plant are designed to produce power in the form of voltage and current by using thermal energy. The power is generated by driving a large electrical generator (also called turbo-generator). This generator is driven by a shaft coupled turbine which rotates by using force of steam. Hence, in order to produce the electrical power, our primary concern is to produce steam from water by using thermal energy. This thermal energy is produced by burning fuel (mostly fossil fuels are used) to produce a sufficient amount of heat to generate steam from water. In thermal power plant, there are a number of process are done such as fuel firing, boiling of water, generation of steam, rotation of turbine, generation of voltage etc. These process  need a number of parts, equipment and they are arranged in a definite manner.
Keep reading

Objective Type Questions on Boiler and Auxiliaries

(Answers are marked in   red color ) (1)      The critical pressure ratio of a convergent nozzle is defined as a)       The ratio of outlet pressure to inlet pressure of nozzle b)      The ratio of inlet pressure to outlet pressure of nozzle c)       The ratio of outlet pressure to inlet pressure only when mass flow rate per unit area is minimum d)      The ratio of outlet pressure to inlet pressure only when mass flow rate per unit area is maximum (2)      The isentropic expansion of steam through nozzle for the steam initially dry saturated at inlet is approximated by equation a)       PV= C b)      P  =C c)       P =C d)      P =C (3)       Curtis turbine is a)       Reaction steam turbine b)      Pressure-velocity compounded steam turbine c)       Pressure compounded impulse steam turbine d)      Velocity compounded impulse steam turbine (4)      Parson’s turbine is a)    
Keep reading

Short form used in power plant

In power plant, most of the terms are called as short form of their actual. These are given below :   ATRS = Automatic Turbine Run-Up System ASTM = American Society for Testing of Material AOP = Auxiliary Oil Pump ACW = Auxiliary Cooling Water ACI = Automatic Control Interface AVGF = Automatic Valveless Gravity Filter ASLD = Acoustic Sound Level Detector APRDS = Auxiliary Pressure Reducing De-Superheating System AHP = Ash Handling Plant ATT = Automatic Turbine Test AVT = All Volatile Treatment ABT = Availability Based Tariff APH = Air Pre-Heater BMCR = Boiler Maximum Continuous Rating BFP = Boiler Feed Pump BFP = Boiler Fill Pump BEM = Bus Extension Module COC = Change Over Contact CI = Control Interface CDM = Clean Development Mechanism CCM = Clean Coal Mechanism CEP = Condensate Extraction Pump CW = Cooling Water CERC = Central Electricity Regularity Commission CEA = Central Electricity Authority COC = Cycles of Concentration
Keep reading