electric water boiler


electric water boiler

electric water boiler
  • Offshore price : $8,999.00 - $100,000.00
  • Minimum order quantity : 1 set
  • Supply Capacity : 10 units/month
  • Manufacturer/Brand : TOBO BOILER
  • Port : Anyang
  • payment terms : Letter of Credit, Wire Transfer, VISA
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Boiler Formulas | Johnston Boiler | Top Quality Boiler

Moreover, the water consumption is usually determined with the blow-down brine, depending on the recirculated steam and the make-up water concentration. B=S x (1 - r) x m / b - m. B = Blowdown. S = Steam rate. b = boiler water TDS concentration. m = make-up water TDS concentration. r = fractional condensate return

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Blowdown in Boiler | Boiler Blowdown Calculation Formula

Boiler Blow Down Calculation Formula. The blowdown rate can be calculated with Following Formula. qBD = qS fc / (bc – fc) Where: qBD is blowdown rate in kg/h. qS is steam consumption in kg/h. FC is Total Dissolved Solids – TDS – in the feed water is ppm. bc is maximum allowable Total Dissolved Solids – TDS – in the boiler water in ppm.

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Boiler – Fundamentals and Best Practices

an average boiler efficiency of 82%, and make-up water temperature of 55°F. The water and sewage A simple calculation indicates that energy in the condensate can be more than 10% of the total steam reduced its boiler makeup water. Reduce Boiler …

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Steam Calculators: Boiler Calculator - Energy

Mar 17, 2015 · Steam, Boiler, and 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 boiler as a saturated liquid at boiler pressure.

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Johnston Boiler Company Boiler Glossary - Steam & …

Nov 03, 2006 · Steam Boilers & Appurtenances, Combustion & Instrumentation Controls, Deaerators, Exhaust Systems, Heat Exchangers, Heat Pipes, Industrial Pumps, Water Heaters, Water Softeners, Boiler Seminars, Services & Parts. 8 Common Boiler Formulas BR = (1 / CC) * BC BR = (1 / 8.6) * 10,000 BR = 1,163#/hr Where, BR Blowdown rate BC Boiler capacity in #/hr

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Boiler Water Treatment Chemicals, Feed, and - Steam Forum

Boilers 170 Boiler Water Treatment Chemicals, Feed, and Control - Perhaps It Is More Complicated Than We Thought By Dave Christophersen, CWT Originally Presented: Association of Water Technologies 2006 Annual Convention & Exposition, September 15, 2006 C hemicals used to treat steam boiler systems are applied based upon the

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Calculation of consumption | Bosch steam boiler planning

Heating up make-up water. In order to compensate for the steam losses in the steam circuit, e.g. due to the direct consumers, treated make-up water must be fed into it. Info on Water treatment. During deaeration, the cold make-up water must be heated from roughly 10°C to 103°C.

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DRAFT BOILER/FEEDWATER GUIDELINES

3.3.5.1 Logging make-up water readings can aid in determining the amount of make-up water being used. Repairing leaks on the boiler and boiler feedwater/condensate system will reduce the amount of make-up water used. 3.3.6 The second priority in reducing carbon dioxide is utilizing external pretreatment before the water enters the boiler.

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How to Calculate Boiler Steam Flows

Jul 12, 2020 · Calculation methods of steam boiler operation factors under varying . 15 Apr 2020 5, Reheater steam mass flow rate, t/h, 565.0. 6, Reheated steam temperature (boiler outlet), °C, 540.0. 7, Reheated steam pressure (boiler

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(PDF) Boiler Calculations | Michael Dellon - Academia.edu

Mass flow rate of steam [t/h] Combustion method 10 20 40 60 80 100 200 400 600 800 Pulverized firing - 1,3 1,0 0,9 0,75 0,7 0,55 0,4 0,35 0,3 Loss [%] Grate 1,5 1,1 0,9 0,7 - - - - - - Oil/gas fired boiler 1,3 0,9 0,7 0,6 0,55 0,4 0,3 0,25 0,2 0,2 Losses of blowdown, sootblowing and atomizing steam Blowdown water from the steam drum and

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KNOWING THE COST OF STEAM

The outlined steam cost example uses one steam generator (boiler), a single fuel, and one steam pressure. The example of unloaded steam cost calculation uses the deaerator feedwater Btu content, which does not take into consideration make-up water or condensate return. Also, the calculation uses only one boiler efficiency.

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Steaming Rate - Industrial Steam Boilers Manufacturers

Consider, for example, a 100 BHP boiler operating with make-up water at 60°F and producing steam at 125 psig. In this case, the "from and at 212°F" steaming rate is 3,450 lbs/hr, but the net steaming rate is only 2874 lbs/hr—17% less than the "from and at …

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Johnston Boiler Company Boiler Glossary - Steam & …

Basic Boiler Calculations • Feedwater = Make up + Condensate Return • Feedwater Flow (FWF) = Steam Make + Blowdown(BD) • Feedwater Flow (FWF) = Steam Make + Steam Make • Cycles -1 • Blowdown = Steam make or = FWF • Cycles –1 Cycles • % Blowdown = 1 as a % of FWF • Cycles

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Boiler Make Up Water Calculations Recipes

an average boiler efficiency of 82%, and make-up water temperature of 55°F. The water and sewage costs for the plant are $0.002/gal, and the water treatment cost is $0.002/gal. The fuel cost is $3.00 per Million Btu (MMBtu). Assuming a 12% flash steam loss*, calculate the overall annual savings.

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How do you calculate steam output on a boiler?

Apr 24, 2020 · Use btu/hr (British thermal units/hour) heat input rate to calculate boiler steam flow. It takes 970.28 btu/hr to produce 1 pound of steam at the above conditions. If 50 million btu/hr are being applied to the boiler, divide by the 970.28-btu/lb to yield 51,531-lb/hr steam flow. This is an average industrial boiler.

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1. ENERGY PERFORMANCE ASSESSMENT OF BOILERS

In case of boilers with intermittent blowdown, blowdown should be avoided during the trial period. In case of boilers with continuous blowdown, the heat loss due to blowdown should be calculated and added to the heat in steam. 1.6.3 Boiler Efficiency by Direct Method: Calculation and Example Test Data and Calculation

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Boiler Blow Down Calculations - YouTube

This video describes all steps that are required to calculate Boiler blow-down flow rate and required blow-down time.

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Sizing a Steam Boiler | U.S. Boiler Company

Dec 05, 2017 · An important note on boiler sizing – all the supply piping in the basement should be insulated with a minimum of 1" of pipe insulation. A better choice would be 1-1/2" or 2" of pipe insulation. An un-insulated steam main is …

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Boiler Feed Water Flow Rate Requirements Chart | Nalco PTS

Dec 29, 2006 · In this case, we need a demineralizer or softener rated for a maximum flow rate of 28 gpm. It will be less depending upon how much condensate is returned. The next part of this question is what water quality is needed for the application. The steam pressure and steam boiler manufacturer will help determine what the water quality needs to be.

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How to calculate the gas consumption of a gas steam boiler

Jun 24, 2019 · The output of a 10 ton boiler is 7 million kcal. Formula for calculating fuel consumption. Fuel consumption = boiler output ÷ fuel calorific value ÷ boiler thermal efficiency. According to the above method, the user can calculate the gas consumption of the gas steam boiler according to the various values provided by the boiler manufacturer

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Guidelines for Boiler Blowdown and Cycles of Concentration

makeup water, total alkalinities may be allowed as high as 1200 ppm when utilizing a specific boiler water antifoam and conducting a recommended embrittlement study. Similarly, silica concentrations can be allowed above those indicated where steam is not superheated or used in

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(PDF) Boiler Calculations | Michael Dellon - Academia.edu

Mass flow rate of steam [t/h] Combustion method 10 20 40 60 80 100 200 400 600 800 Pulverized firing - 1,3 1,0 0,9 0,75 0,7 0,55 0,4 0,35 0,3 Loss [%] Grate 1,5 1,1 0,9 0,7 - - - - - - Oil/gas fired boiler 1,3 0,9 0,7 0,6 0,55 0,4 0,3 0,25 0,2 0,2 Losses of blowdown, sootblowing and atomizing steam Blowdown water from the steam drum and

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Boiler make-up water - Lenntech

Boiler make-up water. Water is widely used in various processes in heating applications, due to its good heat transfer capacity. Depending on water source and its properties, treatment might be required. Depending on the type and material of the boiler, several parameters shall carefully monitor to prevent corrosion, fouling and scaling.

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List of Steam Boiler Calculator | Boiler Calculators

Steam Boiler Calculator Based on Formulas Our Steam Boiler Calculators making boiler system related calculations easy, the thermodyne team created several online calculators and tools. Use following Essential industrial Steam boiler …

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How to Calculate the Fuel Consumption of the Boiler-ZBG Boiler

Apr 17, 2019 · The 10 ton gas fired boiler has an output of 10 tons per hour, which is also the capacity of the boiler. To calculate the gas consumption of a natural gas boiler, you need to know the heat resistance of the heating surface of the natural gas boiler, the heat value of the natural gas boiler, and the efficiency of a 10-ton boiler.

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Continuous blowdown of the steam boiler based on the

For example, RTM 108.030.114-77 (Stationary steam boilers of low and medium pressure. Organization of a water-chemical mode) gives the following formula for calculating the percentage of continuous blowdown based on the boiler steam capacity., % (1) where, S mw –makeup water salinity, mg/l (ppm) S bw – boiler water salinity, mg/l

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Boiler Feed Water Flow Rate Requirements Chart | Nalco …

May 20, 2018 · Proper sizing of Boiler Feedwater System - PC McKenzie CompanyOne boiler horsepower = 34.5 lbs/hr of steam (or water) from and at 212o F. We also know that one-gallon of water weighs 8.37 lbs. To calculate the storage tank.

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Water Handbook - Boiler Blowdown Control | SUEZ

If economically justified, boiler water blowdown can be used to heat process streams. In most cases, boiler water blowdown heat recovery systems use flash steam from the flash tank for deaeration. The blowdown from the flash tank is passed through an exchanger and used to preheat boiler makeup water.

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Steam Calculators: Boiler Calculator - Energy

Steam Calculators: Boiler Calculator - Energy

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How to calculate the steam produced (kg) in a boiler - Quora

Answer (1 of 7): Typically boilers of much size would have a steam meter that calculates flow. This is typically a sensor measuring the pressure drop across and orifice. If you don't have that, then you have two options. Option one is mainly for firetube style boilers. If the boiler is rated in

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Sizing a Steam Boiler | U.S. Boiler Company

Dec 05, 2017 · An important note on boiler sizing – all the supply piping in the basement should be insulated with a minimum of 1" of pipe insulation. A better choice would be 1-1/2" or 2" of pipe insulation. An un-insulated steam main is equal to a radiator and must be calculated and added to the above calculation. When operating a steam boiler

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AVACE AACR CE - Energy

The optimum blowdown rate is determined by various factors including the boiler type, operating pressure, water treatment, and quality of makeup water. Blowdown rates typically range from 4% to 8% of boiler feedwater flow rate, but can be as high as 10% when makeup water has a high solids content. Example

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1. ENERGY PERFORMANCE ASSESSMENT OF BOILERS

In case of boilers with intermittent blowdown, blowdown should be avoided during the trial period. In case of boilers with continuous blowdown, the heat loss due to blowdown should be calculated and added to the heat in steam. 1.6.3 Boiler Efficiency by Direct Method: Calculation and Example Test Data and Calculation

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Power plant and calculations: Boiler calculations for

Feb 12, 2021 · 26-A boiler's SH steam line safety valve is set at 72 kg/cm2 & blow down rate kept 2.5%, calculate the pressure at which safety valve reseats . Blow down of safety valve = (Set pressure – Reseat pressure) X 100/Set pressure. 2.5 = (75-Reseat pressure) X 100 / 75. Reseat pressure =73.13 kg/cm2

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Guidelines for Estimating Unmetered Industrial Water Use

1. Steam generation rates from your boiler system(s) 2. Boiler blowdown rate or cycles of concentration 3. Condensate return rate 4. Annual days or hours of operation Wash application(s) water use, you need to know: 1. The number of units annually washed, processed, or manufactured 2.

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Proper sizing of Boiler Feedwater System

Nov 03, 2006 · What is the static head pressure of a boiler operating at 275 psi? SHP = Bpr * 2.31 SHP = Bpr * 2.31 SHP = 275 * 2.31 SHP = 635.25 Where, SHP static head pressure Bpr boiler pressure (psi) 2.31 multiplier STEAM PRODUCED How much steam will a 150HP boiler make in 2.5 hours? S = HP * 34.5 * T S = HP * 34.5 * t S = 150 * 34.5 * 2.5 S = 12937.50

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exhauted gas flow rate calculation for boiler – CFBC

Air Flow Rate Calculation (Flue Exhaust Gases). 1 volume of gas requires So 12.5 times the gas volume are approx exhausted from the chimney. Example,. 1,000 kW boiler operating at 90% efficiency gives burner firing rate of 1,099 kW.

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Boiler Formulas | Johnston Boiler | Top Quality Boiler

S = 105 – 80. P2. Cut-in Pressure Delta. S = 25. Factor of Evaporation. Water enters the boiler at 225°F. The boiler pressure is 100 psi and the boiler water temperature is …

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How to calculate steam boiler capacity?-ZBG Boiler

Jul 28, 2016 · 4.) maximum steam generating capacity in pounds of tonnes per hours.This term is the most informative and easiest to understand if it refers to steam properties the boiler is designed for. (Large boiler capacities are often given in lbs or tonnes of steam evaporated per hour under specified steam conditions, for smaller boilers capacity is

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Boiler water consumption - Lenntech

Mar 17, 2015 · Using the calculated feedwater mass flow and blowdown rate: Blowdown Mass Flow = Feedwater Mass Flow * Blowdown Rate. [ Blowdown Mass Flow = 3.7 klb/hr = 95.2 klb/hr * 0.039 ] Using the Steam Property Calculator, properties are determined using Steam Pressure and Quality = 0 (Saturated Liquid).

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Proper sizing of Boiler Feedwater System

One boiler horsepower = 34.5 lbs/hr of steam (or water) from and at 212o F. We also know that one-gallon of water weighs 8.37 lbs. To calculate the storage tank needed use the following formula: BHP X 34.5 ÷ 8.337 lbs ÷ 60 min. X 10 = minimum useable capacity in gallons. For example, if you have a 500 HP boiler the calculation will be as

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What is makeup water in a boiler? - FindAnyAnswer.com

Feb 20, 2020 · Boiler feed water is a water with very less hardness used in boiler to generate steam. Hardness should not be more than 5 ppm. We can use DM water as boiler feed water but it will increase cost of overall steam generation . Therefore we don't use DM water as …

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BASIC WATER TREATMENT OF STEAM BOILERS

May 02, 2000 · a complete analysis of the raw and makeup water is the first step in establishing the correct program. From this analysis a qualified firm can determine the right operating parameters for the program. The impurities found in the makeup water will build up in the boiler as the water turns to steam leaving most impurities behind.

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Boiler size calculator - What size boiler do I need?

Oct 23, 2021 · The calculator bases its suggestions on mid-range boilers and average installation costs to provide a rough estimate of the costs involved with installing a new boiler. Final installed boiler prices will vary depending on the selected brand of boiler, the supplier and installation costs which can also vary depending on the location of the property.

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Boiler Ratings - Spirax Sarco | First for Steam Solutions

A boiler has a 'from and at' rating of 2 000 kg/h and operates at 15 bar g. The feedwater temperature is 68°C. The use of Equation 3.5.1 will determine a factor to produce the same result: Note: These values are all from steam tables.

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Boiler Water Treatment Chemicals, Feed, and - Steam Forum

Boilers 170 Boiler Water Treatment Chemicals, Feed, and Control - Perhaps It Is More Complicated Than We Thought By Dave Christophersen, CWT Originally Presented: Association of Water Technologies 2006 Annual Convention & Exposition, September 15, 2006 C hemicals used to treat steam boiler systems are applied based upon the

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boiler makeup water calculation

Mar 17, 2015 · The feedwater flow rate can be calculated from steam mass flow and blowdown rate: Blowdown Mass Flow = Feedwater Mass Flow * Blowdown Rate; Steam Mass Flow = Feedwater Mass Flow - Blowdown Mass Flow; Steam Mass Flow = Feedwater Mass Flow - Feedwater Mass Flow * Blowdown Rate; Feedwater Mass Flow = Steam Mass Flow / [ 1 - …

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