Base model - Values represent a 1000000 Btu/hour gas-fired hot-water operated for 1500 full-load hours per year with a thermal of 80% The performance of this standard unit is based on ASHRAE 90-2007 Thermal (E t) - Represents a output divided by input as defined by ANSI Z2113 A thermal rating should be used to

Read More· tip of the -Water side) Water side Tip- Feedwater economizer Savings 3 to 5% Concern Flue gas dew point Tip-2 Automate/optimize/recover blowdown Tip-3 Inspect water side for scale Savings mm thick scale increase cons by 5 to 8% Tip-4 Recycle steam condensate

Read MoreDivide the BTUs per hour by the content Our burner with the 40000 BTU per hour output divided by 1075 equals 3721 cubic feet of gas per hour This is at 100-percent Step 4 Adjust for the burner by dividing at 100 percent by the burner rating

Read MoreAFUE standards for Annual Utilization Every furnace or has an AFUE rating representing its The AFUE rating shows what percentage of the consumed by your system is converted into useable heat for your home The higher the number the more the use of

Read More· efficiency varies from 20% to 92% depending on the type and purpose of the Thermal efficiency of coal fired varies between 81% and 85% for oil between 78% and 81% and for gas between 76% and 81% (HHV) Poor of can lose up to 30% of the original efficiency

Read More· Combustion is the % of 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 Does not include any evaluation of any complex configurations or fluctuations in operation

Read MoreAFUE standards for Annual Utilization Every furnace or has an AFUE rating representing its The AFUE rating shows what percentage of the consumed by your system is converted into useable heat for your home The higher the number the more the use of

Read MoreThe potential for depends on the type of installed and the used For a typically older model shell with a flue gas exit temperature of 260 o C an economizer could be used to reduce it to 200 o C increasing the feed water temperature by 15 o C Increase in overall thermal would be in the order of 3%

Read MoreThe gas calculation need the following parameters: such as natural gas calorific value 8500kcal/m3 pressure 8-10Kpa and theoretically the gas of heat = calorific value÷ (Calorific value of natural gas x thermal )= 2400 000 Kcal / (8500Kcal * 094) =297m3/h here we take 4 tons of natural gas for example then the gas

Read MoreFor example The calculation formula of demand for steam (saturated steam ) is as follows: Bj=B (-q4/100) Bj- calculation of kg/h B- kg/h q4- mechanical incomplete combustion loss% B=100Q/ (Qdw*) B- kg/h Q- effective heat utilization of kj/h Qdw- Low calorific value of kj/kg - thermal % Q = D (Ibh-Igs-r / 100) + Dpw (Ibs-Igs) Q-

Read MoreThe gas calculation need the following parameters: such as natural gas calorific value 8500kcal/m3 pressure 8-10Kpa and theoretically the gas of heat = calorific value÷(Calorific value of natural gas x thermal )= 2400 000 Kcal / (8500Kcal * 094) =297m3/h here we take 4 tons of

Read More· The combination of turbulent mixing and residence time permitsbubbling bed to operate at a furnace temperature below 1650°F Atthis temperature the presence of limestone mixed with in the furnaceachieves greater than 90% sulfur removal is the percentageof total in the that is used to produce steam

Read MoreThe potential for depends on the type of installed and the used For a typically older model shell with a flue gas exit temperature of 260 o C an economizer could be used to reduce it to 200 o C increasing the feed water temperature by 15 o C Increase in overall thermal would be in the order of 3%

Read More· The thermal efficiency of a 1 ton oil-fired boiler is 07MW the combustion calorific value is 4242Mj / kg and the efficiency of the oil-fired boiler is about 92% Then the daily consum of 1 ton oil-fired boiler = 3600 × 07MW ÷ 4242Mj ÷ kg /

Read MoreMar 09 2018 · Amount of required in tph depends on type of used in ie different have different calorific value Formula for calculating : = steam quantity* latent heat / * Calorific Value FOR EXAMPLE: For tph wood fired - = 1000*540 / 075 *3500 = 205 kg/ hr

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