Energy Saving of Boiler Flue Gas Plate Heat Exchanger

Boiler Efficiency - an overview ScienceDirect Topics

Use economizers to transfer energy from stack flue gases to incoming feedwater. As a rule of thumb, a 1% increase in the boiler efficiency is expected for each 5°C (9°F) increase in the feedwater temperature. Use of air preheaters to transfer energy from stack flue gases to combustion air.

FLUE AND EXHAUST GAS HEAT EXCHANGERS

The energy consumption of gas boilers can be reduced by up to 15 % through the use of BOMAT flue gas heat exchangers. ENERGY DEMAND WITH OIL 10% * In the case of oil fired systems, BOMAT flue gas heat exchangers can cut energy consumption by up to 10 %. Heat is extracted from the flue gas and condensing technology utilises the condensation Flue gas temperature or flue gas loss Bosch steam boiler At an operating pressure of 10 bar, which corresponds to a saturated steam temperature of 185°C, the flue gas temperature is therefore roughly 245°C. This corresponds to a flue gas loss of roughly 11%. As shown in the graphic ( Fig. Efficiency gain for various exemplary sizes of economiser ), the flue gas loss can be reduced by roughly 1 percentage point, or the boiler efficiency increased accordingly, with each 20°C reduction in flue gas temperature.

INCREASING THE ENERGY EFFICIENCY OF BOILER AND

• Proper Boiler Operation Flue gas heat exchanger Waste heat recovery system The energy, in the form of heat, of the flue gases is used by the heat exchanger to add them back to the used heating circuits. In practice, the heat exchanger is mounted between the boiler and the chimney, so there is no need to dismantle the entire system or replace the boiler. This saves MAXIMUM ENERGY GAIN FROM FLUE GASESOur flue gas ercs condensation plants recover up to 50 % of the boiler output from thermal energy in heat contained in otherwise unused flue gas. The latent heat of the evaporation or condensation heat is recovered by condensing flue gas. In addition, one part of the sensible heat can be extracted by means of a decrease in tem-

  Plate heat exchangers for gas-gas energy recovery

  Given the low pressure levels, close to atmospheric pressure, Barriquand guarantees Platular ® custom welded plate exchangers, with their very low pressure drops and high thermal efficiency, up to a maximum temperature of 600°C, with the possibility of chemical and/or mechanical cleaning.. Stack gas-air:recover boiler stack gases to pre-heat the combustion air and thereby improve boiler Use Feedwater Economizers for Waste Heat Recovery - Generally, boiler efficiency can be increased by 1% for every 40°F reduction in flue gas temperature. By recovering waste heat, an economizer can often reduce fuel requirements by 5% to 10% and pay for itself in less than 2 years. The table provides examples of the potential for heat recovery. Example An 80% efficient boiler generates 45,000

  Waste Heat Recovery & Economisers Turnbull & Scott

  Boiler economisers are tried-and-tested technology for recovering heat from flue gases. They improve thermal efficiency by as much as 95% and can save fuel costs by 46% per year. feed water, the boiler thermal efficiency can be increased to as much as 95%. Payback can often be as little as 12 months. Flue gas heat exchanger for steam boilers - BoschFlue gas heat exchanger for steam boilers. With the effective recovery of flue gas heat, you can save up to 14% on fuel and, at the same time, reduce emissions. A flue gas heat exchanger, also called an economiser, is part of the standard equipment for energy-optimised and environmentally friendly boiler