What is maintenance rule?

What is maintenance rule?

The Maintenance Rule requires all safety equipment to be included within the monitoring program’s scope. This provision avoids the all-too-tempting trap of tunnel-vision that focuses attention on a recent problem area and allows the next emerging problem area to remain undetected until it grows larger than necessary.

What is condenser in boiler?

The condenser is a heat exchanger which removes the latent heat from exhaust steam so that it condenses and can be pumped back into the boiler. The feed system completes the cycle between boiler and turbine to enable the exhausted steam to return to the boiler as feedwater.

What is the purpose of condenser in steam turbine?

In thermal power plants, the purpose of a surface condenser is to condense the exhaust steam from a steam turbine to obtain maximum efficiency, and also to convert the turbine exhaust steam into pure water (referred to as steam condensate) so that it may be reused in the steam generator or boiler as boiler feed water.

What is leakage of condenser?

A condenser coil leak is a serious problem. It’s a very expensive repair that can often result in the full replacement of your unit. A leak in your condenser coil will leak refrigerant, causing your system to have less than the recommended charge (amount) of refrigerant in your system.

What is a condenser water box?

The condenser is simply a large heat exchanger with tubes usually horizontally mounted. The tubes may be supported (or staked). The condenser has thousands of small tubes. On-line cleaning systems inject small balls during operation. The water from the circulating water system enters the condenser in a waterbox.

What are the advantages of condenser?

Advantages of a condenser in a steam power plant It reduces back pressure of the steam which results in more work output. It reduces temperature of the exhaust steam which also results in more work output. The condensed steam can be reused as feed water for boiler which reduces the cost of power generation.

Why is condenser needed?

The function of the condenser in a refrigeration system is to transfer heat from the refrigerant to another medium, such as air and/or water. By rejecting heat, the gaseous refrigerant condenses to liquid inside the condenser. The major types of condensers used are (1) water-cooled, (2) air-cooled, and (3) evaporative.

Can condenser leak be repaired?

If you’ve got a small leak in your condenser, where your AC still works for a few days after a recharge, you may consider simply repairing the leak. To repair your condenser, simply install Red Angel A/C Stop Leak either in aerosol form or in liquid form.

What causes a condenser to leak?

Perhaps the most common cause of a condenser coil leaking is the fact that the condenser is probably packed with dust, dirt, and debris. Even trace amounts of fluoride in household water can cause the coil to become corroded over time.

Why do we use condenser?

The function of the condenser in a refrigeration system is to transfer heat from the refrigerant to another medium, such as air and/or water. By rejecting heat, the gaseous refrigerant condenses to liquid inside the condenser.

When air is removed in a surface condenser what happens?

The prevention of leakage of air in the surface condenser is difficult because of the presence of the high vacuum in the condenser. (2) The air leakage results in lowering the partial pressure of the steam and temperature. This naturally results into increase in latent heat and hence more cooling water is required.

How is a condensing unit supposed to be positioned?

The condensing unit should be positioned to allow ad- equate space for performing service work. Indoor and outdoor air-cooled condensing units should be positioned using the guidelines shown below.

Why do we need to improve the cleaning of the condenser?

Because of the random distribution of some of the cleaning devices, not all tubes receive consistent cleaning. Increasing cooling water flow through the condenser can be effective in limiting microbiological growth. This approach will also keep cooling water temperatures lower, possibly to a point at which scale is less likely to form.

How does a water cooled condenser avoid heat?

If the compressor-motor is refrigerant cooled, the chiller also rejects heat generated by motor inefficiency. Air- cooled condensers use fans to facilitate cooling by the ambient air. Water- cooled condensers typically use an evaporative cooling tower.

What should be done about condenser fouling in power plants?

Because condenser fouling can have such a dramatic impact on cost-effective power plant operation, deposition and corrosion should be carefully monitored and the appropriate cleaning technology used at optimal intervals. Here is an overview of the main treatment options. Chemical Treatment Methods.