· C p: Specific of pipe material in kj/kg o C; h fg: Enthalpy of evaporation or saturated enthalpy at operating pressure in kj/kg; t: Time of warming-up in minutes; Note: Suppose if the warm-up/heating time of the system is increased to 12 minutes from 6 minutes then the initial flow rate of the can easily be reduced to half If the

Get a QuoteHorsepower What is the horsepower of a generating 21500 lbs of per hour at 155 psi? The factor of evaporation is 108 BHP =

Get a Quote· Current industry accepted practice for sizing for these systems is to size the to the output of the standing radiation plus the loss of the piping system (usually another 15% or so) plus an additional pick up factor (about another 15%) to help bring the system up to operating temperature quickly when heating is

Get a QuoteThe overall or U-value refers to how well is conducted through over a series of resistant mediums Its units are the W/(m 2 °C) [Btu/(hr-ft 2 °F)] vs Hot Water

Get a QuoteDry saturated steam at 3 bar g is used to heat water flowing at a constant rate of 15 l/s from 10°C to 60°C hfg at 3 bar g is 2 1334 kJ/kg and the specific heat of water is 419 kJ/kg °C Determine the steam flowrate from Equation 267: As 1 litre of water has a mass of 1 kg the mass flowrate = 15 kg/s

Get a QuoteThe heat absorbed by the boilers per pound of dry fuel is 1171×9704 = 11363 B t u This quantity plus losses (A) (B) (C) (D) and (E) or 11363+22+618+1311+61+261 = 13636 B t u accounted for The heat value of the coal 14225 B t u less 13636 B t u leaves 589 B

Get a QuoteOnline calculator with Table Includes 53 different calculations Equations displayed for easy reference

Get a Quote· The receiver tank should be able to hold five minutes worth of condensate for boilers up to 200 BHP and 10 minutes of condensate for boilers over 200 BHP An additional 33 percent should be added as a safety factor One BHP (Boiler Horsepower) will produce 0069 gallons per minute of condensate Developing a formula results in:

Get a QuoteSuch as: capacity of 1t / h steam boiler means that the boiler can be in 1 hour 1 ton of water into saturated steam under pressure capacity; as 07 MW hot water heaters and furnaces that can be in 1 Heat Transfer Fluid hours generate heat equivalent to 07MW of power (equivalent to 1 ton of steam heat) 9the boiler heating surface

Get a QuoteThat is based on a loss calculation for the room For example: A house with a 100000 BTU demand and a 30°T will need a flow rate of approximately 7 GPM (slightly less based on the following formula: (833 * 60 * 30°T) = X 100000/X will give you 67 GPM

Get a Quote· Last month we discussed sizing a hot water boiler with a loss calculation Unlike a hot water boiler a steam boiler is sized by determining the square foot of radiation connected to the steam system Once thats been determined you can accurately select a boiler thats large enough to the connected load (radiation)

Get a Quote· Recall that 1 minute net storage is 1 minute based on pumping which is really twice the steaming rate of the So in a 15000 sq ft EDR system where your pump is sized for 1 gpm per thousand square foot EDR or 15 gpm the feed unit tank storage should be 15gpm times 5 minutes or about 75 gallons of storage

Get a Quote· Last month we discussed sizing a hot water with a loss calculation Unlike a hot water a is sized by determining the square foot of radiation connected to the system Once thats been determined you can accurately select a thats large enough to

Get a Quoteand Blowdown Pressure are the same Combustion Efficiency is the % of fuel energy that is directly added to the feedwater and not otherwise lost or used Blowdown Rate is the % of incoming feedwater mass flow rate that leaves the as a saturated liquid at pressure

Get a QuoteEfficiency The term efficiency specifically applied to a is the ratio of absorbed by the in the generation of to the total amount of available in the medium utilized in securing such generation When this medium is a solid fuel such as coal it is impossible

Get a Quotetransfer takes place directly in the water in the chamber thus producing high quality of 9995% purity throughout the operating range Applications With over 100 years of experience in the industry and thousands of operating units Vapor Power stands ready to

Get a QuoteEfficiency The term efficiency specifically applied to a is the ratio of absorbed by the in the generation of to the total amount of available in the medium utilized in securing such generation When this medium is a solid fuel such as coal it is impossible

Get a QuoteExample: A tank containing 2500 litres of water that rises in temperature from ambient 10ºC to 70ºC in 2 hours 2500 x 4186 x 60 2048 x 2 = 154kg/h of steam This figure represents the actual steam energy required to heat the 2500 litres You will also need to consider the extra energy required to heat the tank

Get a QuoteEach boiler is given a boiler horsepower (BHP) rating based on the steam output capacity at 212°F and 0 psig For this calculation you will enter the steam load in pounds per hour which will be divided by a constant of 345 This number represents the thermal energy rate required to turn 345 lbs of water at to steam in one hour

Get a Quote· Cast iron radiators require about 14 liters of hot water per kW of heat output (1 KW or kilowatt = 3412 BTUs) For North Americans 1 gallon = 4546 liters Fan coil heaters use about 8 liters of water per KW of heat output Heating baseboards and heating convectors (finned copper tubing) require about 6 liters of hot water per KW of heat output

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