
Condensing Economizer beneficial boiler applications heat recovery steam system efficiency improved
Product Description
The key to a successful waste heat recovery project is optimizing the use of the recovered energy.By installing a condensing economizer,companies can improve overall heat recovery and steam system efficiency by up to 10 percent.Many boiler applications can benefit from this additional heat recovery such as district heating systems,wallboard production facilities,greenhouses,food processing plants,pulp and paper mills,textile plants,and hospitals.
Classifications
There are two versions of the device used in data centers: air-side economizers and water-side economizers.
• Airside economizers pull cooler outside air directly into a
facility to prevent overheating.
• Water-side economizers use cold air to cool an exterior water
tower. The chilled water from the tower is then used in the air
conditioners inside the data center instead of mechanically-chilled
water, reducing energy costs. Water-side economizers often operate
during nightime to take advantage of cooler ambient temperatures.
Differences
• A conventional feedwater economizer reduces steam boiler fuel
requirements by transferring heat from the flue gas to the boiler
feedwater. For natural gas-fired boilers, the lowest temperature to
which flue gas can be cooled is about 250°F to prevent condensation
and possible stack or stack liner corrosion.
• The condensing economizer improves waste heat recovery by cooling
the flue gas below its dew point, which is about 135°F for products
of combustion of natural gas. The economizer reclaims both sensible
heat from the flue gas and latent heat by condensing flue gas water
vapor. All hydrocarbon fuels release significant quantities of
water vapor as a combustion byproduct.
Boiler Efficiency of Condensing Economizers | ||
System | Combustion Efficiency@4% ExcessO2(%) | Stack Gas Temperature°F |
Boiler | 78 to 83% | 350 to 550 |
-With Feedwater(FW)Economizer | 84 to 86% | 250 to 300 |
-With FW and Condensing Economizer | 92 to 95% | 78 to 150 |
Suggested Actions
• Determine your boiler capacity, average steam production,
combustion efficiency, stack gas temperature, annual hours of
operation, and annual fuel consumption.
• Identify in-plant uses for heated water, such as boiler make-up
water heating, preheating, domestic hot water, or process water
heating requirements.
• Determine the thermal requirements that can be met through
installation of a condensing economizer. Determine annual fuel
energy and cost savings.
• Determine the cost-effectiveness of a condensing economizer.
Ensure that system changes are evaluated and modifications are
included in the design (e.g., mist eliminator, additional water
treatment, heat exchangers). Simple paybacks for condensing
economizer projects are often less than two years.
Delivery
Company Introduction
Established in 1985,Zhangjiagang Hua Dong Boiler Co.,Ltd.(trading as HD Boiler),produces power plant; industrial; waste heat; waste incineration; biomass; organic heat carrier and electric steam boilers. Coupled with a comprehensive range of heating surfaces, HD Boiler brings to the market a unique service including boiler design , fabrication, installation, maintenance and replacement of boiler pressure parts.
1. Fabrication area of 400,000 square meters
2. 150 Engineers
3. 600 Coded welders
4. 60 Licensed Inspectors(NDT Level-III instructors)
5. Class-A Licenses for Design and Manufacture Boiler
6. ISO 9001:2008 Quality System
7. ASME Certificate of Power Boilers
8. ASME 'S','U' and NB stamp authorization
Zhangjiagang HuaDong Boiler Co., Ltd.
Hua Dong Boiler Co., Ltd. is a high-tech enterprise specialized in manufacturing boilers. Established in early 1985s, has two manufacturing bases, this company covers 400,000㎡ with fixed assets amounting to USD 110,000,000. There are 1100 employees including 150 technicians and 600 coded welders. Hua Dong holds the manufacturing licenses for Grade A boilers and Grade A1&A2 pressure vessels issued by Chinese General Administration of Quality Supervision, Inspection and Quarantine; also it holds the "S" and "U" "NB" stamps issued by American Society of Mechanical Engineers; meanwhile, this Company has passed the certification of ISO9001, SO3834, EN12952 Quality Management System.
"Hua Dong" boilers include Utility Boiler, HRSG Boiler, coal-fired , oil(gas) -fired, coal-water-slurry-fired and garbage-fired steam/hot water boilers, organic heat carrier boilers, etc., and Boiler spare parts (Economizer, Finned tube, Header, Steam drum, Superheater, Water wall panel, Air preheater, Cyclone separator, etc., which are widely used in power generation, heat supply, chemical engineering, textile, food, paper, road building, plastic, rubber and wood working industries. "HD" boilers are honored as "Famous Production in Jiangsu Province", " Jiangsu High-Tech Product" and "Jiangsu Energy-Saving Product". "HD" brand is a "Famous Brand in Jiangsu Province". We are a qualified supplier for the top three boiler manufacturers in China(Harbin Boiler Co., Ltd., Dong Fang Boiler Group Co., Ltd., Shanghai Boiler Works Ltd.,). So far, Hua Dong Boilers have served 10000 customers, which sell well all over China and are exported to USA, Australia, Russia, Kazakhstan, India, Indonesia, South Africa, Brazil, and Southeast Asia.
We strive to manufacture "Safe, Efficient, Energy-Saving and Environment-Friendly" boilers, provide new-type products in excellent quality, serve users sincerely to their satisfaction, and be a top supplier of boilers in China.
Declaration
Zhangjiagang Hua Dong Boiler Co.,Ltd has no subsidiaries.
Packaging & Shipping
Company Business
Our products have been wildly used in power plants and large international companies overseas.