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Search Results for: boiler

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Boiler System Efficiency

Journal

When natural gas cost $0.40 per therm* (1999), even a poorly designed boiler system would have positive payback. Hurricane Katrina changed that. According to the Energy Information Administration (www.iea.doe.gov), the cost of natural gas has increased 50% in the U.S. since last fall (due to Hurricane Katrina) and 200% in the last seven years. Electricity has increased only 20% in the same time frame (central Indiana). Winter 2006 natural gas cost as much as $1.40 per therm (100,000 Btu) and electricity costs around $0.07/kWh (3,413 Btu). The electric cost equates to $2.05 per therm.

A Primer on Protecting Idle Boilers

Journal

Many boiler plants have excess boiler capacity. Typical boiler plants maintain backup capacity that must be instantly ready to provide steam should a mechanical problem occur on the primary boilers. Some boiler plants may have had a greater steam demand at one time, and process changes have reduced present steam requirements. The challenge to many managers is to protect the integrity of this equipment while the boilers are not being used. A significant amount of damage that occurs to boilers during their lifetime can be associated with idle periods and extended downtime. The typical processes in place that provide protection for boilers from scale and corrosion during operational times may not be available when the boiler is not running.

4225 -- Steam Conservation and Boiler Plant Efficiency Advancements

Conference Proceeding

4225 -- Steam Conservation and Boiler Plant Efficiency Advancements

SA-12-C029 -- Laboratory Evaluation of Aftermarket Boiler Control System

Conference Proceeding

SA-12-C029 -- Laboratory Evaluation of Aftermarket Boiler Control System

Boiler System Efficiency

Journal Article

Boiler System Efficiency

Examining Boiler Setpoint Effect

Journal Article

Examining Boiler Setpoint Effect

Dual, dissimilar boiler flame safety controls

Journal

Describes how a building management agency operating multiple plants in new Jersey resolved a boiler plant staffing problem for 34 low-pressure steam fire-tube boilers ranging from 2,453 kW to 4,905 kW (250 to 500 boiler hp) by implementing an approved programme for operation, monitoring and documentation for 14 boiler plants. The boilers were retrofitted with a dual, dissimilar flame safeguard control system with remote monitoring and a dissimilar low-water cut off on each boiler. Describes the systems, their installation and remote monitoring system. Notes their satisfactory operation and a payback period of less than one year.

Engineers Notebook: Design Tips to Avoid Boiler Short-Cycling

Journal

Boiler short-cycling causes excessive wear and tear on the boiler and has a tremendous penalty on boiler efficiency. Kent provides tips to help designers improve heating hot water system performance.

Avoiding Boiler Problems

Journal

Boilers represent large capital expenditures. Their operational reliability and availability are often critical to facility profitability. Therefore, training and developing personnel responsible for this equipment is essential. Failure to follow a few well-established practices can result in catastrophe. The most common causes of catastrophic boiler failure include: fuel explosion, low water incident, poor water treatment, contaminated feedwater, improper blowdown techniques, improper warm-up, impact damage to tubes, severe overfiring, improper storage, and pulling a vacuum.

NY-14-C003 -- Principals of Condensing Boiler System Design

Conference Proceeding

NY-14-C003 -- Principals of Condensing Boiler System Design


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