The primary operate of a desuperheater is to lower the temperature of superheated steam or alternative vapors. This chilling is accomplished as a results of the method vapor being brought into direct contact with another liquid like water. The injected water is then evaporated.

Basic Desuperheating Theory

Superheated refrigerant is gas that’s at a temperature that’s above the traditional temperature, at the superheated level.

This extra heat is wasted in atmosphere which:
• Is higher than saturation temperature.
• Contains more energy.

• contains a larger specific volume than saturated gas.

If the gas is too hot, it will cause equipment (condenser) to damage and hence the condenser efficiency is decreased.The overall purpose of a desuperheater water heater is to provide effective heat transfer between refrigerant and water. And a extremely effective desuperheater heater style and application ends up in pricey issues to be avoided, together with extended closedown and startup times. Desuperheaters heater comes in a very kind of configurations together with probe vogue with variable or fastenednozzle, double venture and venturi. With a style that has finely controlled water spray that ends up in reducing refrigerant temperature at saturation level.

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A desuperheater could be a device that cools superheated gas to a temperature about to its traditional temperature, generally by spraying penalized droplets of water into the flow of supeheated gas.

Superheated gas is gas that’s at a temperature on top of its traditional temperature.

Desuperheater Applications:

The Desuperheater will be found in several sorts of applications, including:

1.Power generation

Boilers running at minimum hundreds or with high power, produce variable temperature gas.

Desuperheaters are wont to stabilize superheat over wide selection of flows.

Surface condensers work most effectively once equipped saturated gas.

This reduces the necessity to feature tubes for cooling the superheated gas, and prevents burden caused by thermal growth whenever the new, dry refrigerant gas enters the condenser.

2.Process controllability

Desuperheaters additionally facilitate to regulate a range of processes.

If working refrigerant temperature is not constant, a process becomes uncontrollable, especially when gas flow or pressure changes continuously. This impacts product quality and cost, force unscheduled error, creates personnel safety problems, and cost a greatly in repairs and replacements.
Maniks has a wide range of desuperheaters as they provide precise refrigerant temperature control for various applications in boilers, chemical, oil & gas process plants, etc where the available refrigerant is at superheated conditions.

These desuperheaters have high performance, custom design, easy to install and with almost zero operating cost.

3.Thinner pipe and lighter flanges

Cooler gases needs skinny pipe schedules or lighter rim than superheated gas.

Besides from lower prices, this can reduce down- times for piping, controls, valves and other equipments during their initial constructions or shutdown maintenance.

4.Preventing lubricant degradation

Superheated gas could straightaway degrade bound lubricants, therefore the saturated gas is employed for dearspecial things like compressors and pumps.

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What is Desuperheater??

A desuperheater is thought as a secondary device device that transfers heat expeditiously from the planet within the winter season and from your house within the summer, into your

domestic hot water tank.

The simplest type of desuperheater is an unlagged section of pipe, where heat can be radiated to the environment.

However, except the plain risk of injury to personnel from such a hot item of plant, and therefore the dear energy wastage, this approach doesn’t fits compensate

for changes within the environmental conditions, steam temperature or steam flowrate.

A desuperheater may be a device that cools down the superheated refrigerant (gas that’s at a temperature higher than its saturation temperature).

The temperature of this gas is reduced by spraying droplets of water into the flow of the superheated gas.

How Desuperheater works??

When gas is employed for heating or alternative heat transfer or in industrial processes, it’s best once saturated.

It is a tool that lowers the temperature of superheated gas in order that it may be used expeditiously for heating or for alternative industrial use.

This gas temperature minimisation is additionally known as as attemperation, is performed by the desuperheater storage tank (a device that injects a prescribed quantity of water into a gas flow stream).

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The primary perform of a desuperheater storage tank is to attenuate the temperature of superheated gas and alternative vapors.

This temperature change is achieved by the method vapor being brought into direct contact with a liquid likewater.

The injected water is then evaporated.

Purpose of Desuperheater

The general purpose, of this device is to supply effective and continuous heat transfer between gas and water.

And a extremely effective desuperheater application and style ensures that expensive issues to be avoided, as well as general wear of downstream piping and instrumentality, long startup and shutdown times, and

reduced process efficiency.

Maniks Desuperheater Water Heater is the ultimate accessory for an AC & R plant that can be used to remove superheat of the refrigerant.

Benifits of Desuperheater

Heating water with a desuperheater storage tank prices regarding ninety five % less during a cooling dominated climate, and up to 80 percent less in a heating dominated climate, as compare

to heating your domestic water with an electric, oil, or propane fired hot water heater. Today the cost of natural gas savings is about 15 percent less, not as drastic a savings as the others, but saving on your bills is still saving on your bills!

In the summers, heating your domestic water is “completely” free.

This is because the heat that is being extracted from your household devices is transferred into your hot water tank. Since this extra heat from inside of your home devices was going to be rejected (i.e. thrown outside) into the earth anyway, putting it into your hot water tank instead is free.

The only price for the summer water heating is that the little price of running the current pump that moves the water.

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Desuperheater Information

Desuperheaters are basically used to cool steam in power plants. Desuperheating is the process of regenerating superheated steam to its saturated state with the help of temperature reduction. There are two basic types of desuperheaters that is indirect contact and direct contact. Indirect contact includes desuperheaters such as shell and tube heat exchangers separate the steam and the medium used to cool it. Direct contact steam includes desuperheaters do not. A direct contact steam desuperheater transfers moisture through small holes into the path of high-velocity steam. After the transformation, the water is atomized into small drops and quickly evaporated by absorbing the superheat. The amount of the steam temperature downstream is used to control the amount of water added during desuperheating.

What is Desuperheater

A device that cools down the superheated refrigerant (gas that’s at a temperature on top of its saturation temperature) is nothing however a desuperheater.

The temperature of this gas is reduced by spraying droplets of water into the flow of the superheated gas.

Types of Desuperheater

1) Freon: Maniks desuperheater works on Freon refrigerant gas to extract the superheated refrigerant and use it for other purposes. Therefore this heat if used for boiling water in hotels, restaurants etc users can get free of cost water.

2) Ammonia: Ammonia is the oldest one of all the refrigerants and it is still widely used in the refrigeration and air conditioning applications.

It is additionally the sole refrigerant outside the halocarbons cluster, still being used to a great extent.

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Desuperheater Fundamental

In a usual AC & R system, the refrigerant temperature rises in tune of 80℃ to 120℃ after compression.

The refrigerant is more place to the air/ water cooled condenser to condense close to concerning 40℃.

While the compression of refrigerant within the condenser, the total heat contained in this high Temperature/high pressure gas gets wasted to the atmosphere.

This superheat of the gas that is an element of the entire enthalpy of the gas, has a substantial heat potential provided the same is reclaimed efficiently and is optimized

for energy saving
Maniks Desuperheater Water Heater is the ultimate accessory for an AC & R plant that can be used to remove superheat of the refrigerant.

Desuperheater Installation

The Maniks Desuperheater storage tank is placed before the condenser and also the oil centrifuge.

The ammonia refrigerant travels through the different tubes in the to lower the refrigerant temperature before entering the condenser. The Water heater is manufactured considering the hot water requirements for industrial processes. When the needs of refrigeration and hot water are not simultaneous, a “Recirculation” type system is provided in which hot water is generated, stored & maintained in a separate insulated tank. This stored hot water then can be utilized as and when required for future use.

Desuperheater Design

Double walled “Tube in Tube “, vented, counter flow heat exchanger.

Vent tube having serrations on inner & outer surfaces to avoid cross contamination of refrigerant and water/ fluid.

Each tube incorporates a tube within that permits water/ fluid to travel in associate degree other way.

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Introduction

Basic Desuperheater theory includes that the heated steam has very good advantages on the applications, for example, when used inpower stations to drive turbines. For efficient use on heating applications the steam is to be desuperheated compalsary.

Most desuperheater applications decreases the temperature of steam generated by very much temperature boilers to levels required in process operations. The first function of a desuperheater is to lower the temperature of superheated steam .

Operations

All desuperheaters carry on the same operation. Water is introduced into the process line and thus comes into direct contact with the superheated steam. Evaporation of the water decreases the steam temperature. The outer steam temperature is manages by the quantity of water that is evaporated. It is preferred to use hot injection water near the saturation temperature of the steam tfor cooled so that it is the latent heat which is extracted to evaporate the injection water. This decreases the time of the suspension of the water particles in the steam so that all the water is evaporated and none falls to the inside walls of the pipe work.

Types of Desuperheater

Freon Desuperheater

Ammonia Desuperheater

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Advantages

Efficient, evaporated cooling water adds to steam load

Various types, configurations and sizes

No moving parts

No special supports

No thermal liner is required

Installation

The Desuperheater Water Heater is being installed before the condenser and the oil separator. The refrigerant travels through the series of tubes in the Desuperheater before entering the condenser. Normally the Desuperheater Water heater is designed considering the hot water requirement for the processes. When needs of hot water & refrigeration are not simultaneous, a ” Recirculation ” type system is provided wherein hot water is generated, stored & maintained in an insulated tank. This hot water then can be utilised as and when required.

The Desuperheater water heater can be easily scroll or screw type chillers.

Maniks has a wide range of desuperheaters as they provide precise refrigerant temperature control for various applications in boilers, chemical, oil & gas process plants, etc where the available refrigerant is at superheated conditions. These desuperheaters have very good performance, good custom design, easy to install and with zero operating cost.

Maniks Desuperheater Water Heater is the ultimate accessory for an AC & R plant that can be used to remove superheat of the refrigerant.

Design

Double Walled ” Tube in Tube “, vented, counter flow heat exchanger. Vent tube having serrations on inner & outer surfaces to avoid cross contamination of refrigerant and water/ fluid. Each tube has a tube inside that allows water/ fluid to travel in an opposite direction.

Fundamentals

In a usual AC & R system, the refrigerant temperature decreases about of 80℃ to 120℃ after compression. The refrigerant is next put to the air or water cooled condenser to condense near about 40℃.

While the condensing of refrigerant in the condenser, the total heat contained in this high Temperature/high pressure gas gets wasted to the atmosphere.

This superheat of the gas which is part of the total heat content of the gas, has a substantial heat potential provided the same is reclaimed efficiently and is optimized for energy saving

http://www.maniks.com