Marine Heat Exchangers

Marine Heat Exchangers

Marine Heat Exchangers

Marine heat exchanger in gireesh industrial heat exchanger and heat exchanger that we present has been designed and developed in adherence with various international quality standards. Marine heat exchangers have a compact design and style of construction of the plate arrangement, which allows enhanced performance. The machine is easy to maintain and offer true value for money. We are capable of designing and fabricating our range in accordance with the specific needs of our clients.

We are specialized in the manufacturing of heat exchangers and oil coolers, including the following oil coolers

  • Engine & transmission oil coolers
  • Exhausted air to water intercoolers
  • Hydraulic Oil Coolers
  • Marine Heat Exchangers
  • DC heat exchangers
  • Fuel Coolers

FEATURES OF MARINE HEAT EXCHANGERS:

  • With corrugated tubes, this marine oil cooler heat exchanger ensures high viscosity oil with good flow velocity inside of the unit.
  • These features made this marine oil cooler efficient and cost effective on water to oil cooling system.

ADVANTAGES OF MARINE HEAT EXCHANGERS:

  • High heating efficiency for oil cooling
  • Compacted size
  • Easy installation
  • Stainless steel 316L or titanium shell & tubes
  • Various connectors for connection

There are three methods employed for water-cooled marine petrol and diesel engines they are Direct cooling, Heat exchanger cooling and Keel cooling.

  • Direct cooling of the cylinders and heads by sea water is unsatisfactory, because the engine – which was probably originally designed for radiator cooling – will run too cold and the sea water will eventually ruin the cylinder block and heads.
  • Heat exchanger cooling is the most common method, the sea water being isolated in components which can be designed to withstand its corrosive affect. The closed fresh-water circuit can be thermostatically controlled so that the engine operates at its designed temperature.
  • Keel cooling is suitable for small boats operating in shallow weedy water, but the need for pipework external to the hull is a severe limitation

RCC Cooling Towers

RCC Cooling Towers

RCC Cooling Towers

We are one of the preeminent manufacturers and suppliers of RCC Cooling Towers in the domestic market. Robust in construction and extremely durable our RCC Cooling Towers are manufactured using optimum quality raw materials. Best suited for increased cooling and power generation requirements in various industries our RCC Cooling Towers are in huge demands in the market.

Rcc Cooling Towers for Properties :

  • Structural design for operational load
  • Withstands high wind pressure of 30 PSI
  • Multi-cell configuration
  • Flexibility of operation
  • Meets increased cooling requirements
  • Saves electrical energy
  • Dimensionally correct

Applications For Rcc Cooling towers :

  • Dairy and food industries
  • Distilleries and breweries plants
  • Steel factories and foundries
  • Engineering industries
  • Cement plant
  • Industrial processing units
  • Oil refineries

STRUCTURE is made up of Pultruded Fiberglass material.

HARDWARE Hot dip galvanized are used to withstand corrosion. Stainless Steel hardware is available at extra cost.

CASING is made up of Pultruded FRP/Corrugated FRP Sheets of adequate thickness.

FAN DECK is made up of robust & Strong Pultruded FRP Panels/Sheets.

FRP FANS are of proven design provided by Indian Institute of Technology.

FAN CYLINDER is made up of tough & durable FRP/GRP material.

DRIFT ELIMINATOR Paltech Uses efficient PVC Drift Eliminator in cellular / full wave design to reduce water losses & fan air pressure resulting in low energy consumption by fan. Fill of Film type or Splash type as per requirement of client is provided.

NOZZLES made up of PP/PVC, non clogging type are provided for optimum efficiency. Drive shafts duly balanced in SS/HDG Steel material in hollow construction are provided.

GEAR BOX Paltech Gear Box of Spiral bevel or Spiral Bevel cum helical, design is validated by Indian Institute of Technology. These are made to meet requirement of STD-III of CTI, USA and AGMA standards. Prior to shipment, load testing of each & every gear box, is carried out at factory to provide our clients zero defect Gear Box.

Indirect-Contact Heat Exchangers

Indirect-Contact Heat Exchanger

Indirect-Contact Heat Exchangers

In an Indirect-Contact Heat Exchangerr, the fluid streams remain separate and the heat transfers continuously through an impervious dividing wall or into and out of a wall in a transient manner. Thus, ideally, there is no direct contact between thermally interacting fluids. This type of heat exchanger, also referred to as a surface heat exchanger, can be further classified into direct-transfer type, storage type, and fluidized-bed exchangers. Image result for Indirect-Contact Heat Exchangers
Types of Heat Exchangers : –

 According to the heat transfer process the heat exchanger may use an indirect contact or direct contact heat transfer method.

In indirect contact heat transfer, the fluids in the system are separated by a thermally conductive boundary layer which allows heat energy to flow but prevents mixing or contamination.

  • In direct contact heat exchangers, the fluids are immiscible (e.g. gas and liquid) and therefore do not require physical separation when transferring heat.

According to the number of fluids– the heat exchanger may incorporate two, three, or more than three heat transfer fluids in the system.

According to flow arrangements– the heat exchanger may be either single pass or multi-pass. It may incorporate cross-flow, counter-flow, or co-current flow. Typically heat exchangers utilize combinations of these flow patterns to maximize thermal efficiency.

  • In single pass heat exchangers, fluids flow by each other only once in the system.
  • Fluids in multi-pass heat exchangers are looped back to flow by each other multiple times.
  • In counter flow heat exchangers, fluids flow from opposite directions towards each other.
  • In cross flow heat exchangers, fluids flow perpendicular to each other.
  • In co-current flow heat exchangers, fluids flow parallel to each other.

According to heat transfer mechanism – the heat exchanger uses single-phase convection, two-phase convection, and/or radiative heat transfer on each side of the exchanger.

According to construction – the heat exchanger may incorporate shell & tube, plated, or air-cooled construction. Users should keep these characteristics in mind when considering different heat exchanger design.

Dynamic scraped surface heat exchanger Fin Cooler

Dynamic scraped surface heat exchanger Fin Cooler

 

Mechanical Compression : –
During the compression cycle, the refrigerant passes through four major components within the chiller: the evaporator, the compressor, the condenser, and a flow-metering device such as an expansion valve. The evaporator is the low-temperature (cooling) side of the system and the condenser is the high-temperature (heat-rejection) side of the system.

Mechanical compression chillers are classified by compressor type: reciprocating, rotary screw, centrifugal and friction less centrifugal.

Reciprocating : –

Similar to a car engine with multiple pistons, a crankshaft is turned by an electric motor, the pistons compress the gas, heating it in the process. The hot gas is discharged to the condenser instead of being exhausted out a tailpipe. The pistons have intake and exhaust valves that can be opened on demand to allow the piston to idle, which reduces the chiller capacity as the demand for chilled water is reduced. This unloading allows a single compressor to provide a range of capacities to better match the system load. This is more efficient than using a hot-gas bypass to provide the same capacity variation with all pistons working. Some units use both methods, unloading pistons to a minimum number, then using hot-gas bypass to further reduce capacity stably. Capacities range from 20 to 125 tons.

Centrifugal :

The centrifugal compressor operates much like a centrifugal water pump, with an impeller  compressing the refrigerant. Centrifugal chillers provide high cooling capacity with a compact design. They can be equipped with both inlet vanes and variable-speed drives to regulate control chilled water capacity control. Capacities are 150 tons and up.

With our immense domain expertise, we are offering quality assured range of Dynamic Scraped Surface Heat Exchanger. Manufactured using superior quality basic components and allied tools, this machine is suitable for high viscosity hot and cool products for their crystallization, evaporation and high fouling applications. Furthermore, this heat exchanger is monitored on various quality parameters during the manufacturing process to ensure its optimum performance. Offered Dynamic Scraped Surface Heat Exchanger can be availed from us in various technical specifications at most economical price.

Features:

  • Good resistance against chemicals and corrosion
  • Ability to defy the effects of high pressure and temperature
  • Optimum and smooth performance under all circumstances
  • Less maintenance and prolonged operating life

 

 

Plume abated cooling towers

Plume abated cooling towers

Plume abated cooling towers

 OVERVIEW for Plume abated cooling towers

Plume from a cooling tower can pose several issues. It may affect visibility and safety as well as public perception.

Plume abatement is the process of removing this visible plume.

ClearSky is a fully integrated system that operates more reliably than coil-based systems. By using a series of PVC heat exchanger modules in the tower plenum, ambient air condenses much of the moisture before it exits the tower thereby reducing the plume.

Image result for Plume abated cooling towers

PLUME ABATEMENT

Aesthetics / Neighbor Relations
Even though the cooling tower plume is made up of water vapor, a community may perceive it as unwanted or smoke-related. This may affect the use of nearby land or decrease property values.

SAFETY

Community concerns regarding visibility can be removed by significantly reducing visible plume.

RETROFIT

The ClearSky Plume Abatement System can be added to existing cooling towers in many cases, making plume abatement even more economical.

PERMITTING

Permitting can be a long and costly process. Eliminating the visible plume may enhance a smooth permitting process.

WATER  CONSERVATION

Water is increasingly becoming a scarce and valuable commodity. Removing water from the vapor plume can help decrease water-related costs and help the environment.

Benefits include:

Lower Installation Cost—Less piping means less investment than conventional systems

Greater Design Flexibility—Back-to-back design allows for easy installation, including retrofits

Reduced Maintenance Costs—Unique patented design and materials means less need for maintenance

Reduced Auxiliary Power Usage—Driven by reduced pump head, ClearSky towers can effectively reduce auxiliary power usage when compared to coil type hybrid towers

Improved Permitting—Smoother process with reduced likelihood of interruption due to public comment

Lower Cost Versus Dry—The high-performance operation you need with fewer costs

Utilizes less energy and has lower carbon footprint, than dry systems

Improved safety for surrounding transportation and improved neighbor relations

U Tube Bundle

U Tube Bundle

U TUBE BUNDLE

U tubes can duplicate any existing bundle to include dimensions, materials and performance.

A heat-exchanger system consisting of a bundle of U tubes hairpin tubes surrounded by a shell outer vessel. one fluid flows through the tubes, and the other fluid flows through the shell, around the tubes.

One of the most common applications is the cooling of Hydraulic Fluid and oil in engines, transmissions and hydraulic power packs.

With the right choice of materials they can also be used to cool or heat other mediums, such as swimming pool water or charge air.

There are often baffles directing flow through the shell side so the fluid does not take a short cut through the shell side leaving ineffective low flow volumes. These are generally attached to the tube bundle rather than the shell in order that the bundle is still removable for maintenance. Counter current heat exchangers are most efficient because they allow the highest log mean temperature difference between the hot and cold streams. Many companies however do not use single pass heat exchangers because they can break easily in addition to being more expensive to build. Often multiple heat exchangers can be used to simulate the counter current flow of a single large exchanger.

Specifications :

  • The simple design of a shell and tube heat exchanger makes it an ideal cooling solution for a wide variety of applications.

Applications :

  • One of the most common applications is the cooling of Hydraulic Fluid and oil in engines, transmissions and hydraulic power packs.
  • With the right choice of materials they can also be used to cool or heat other mediums, such as swimming pool water or charge air.

 

Advantages :

  • One of the big advantages of using a shell and tube heat exchanger is that they are often easy to service, particularly with models where a floating tube bundle (where the tube plates are not welded to the outer shell) is available. Can also be used on fixed tube sheet heat exchangers.

 

Brewery Chillers

Brewery Chiller

Brewery Chillers

Whaley is a manufacturer of industrial brewery chiller systems.  The brewery industry relies heavily on WPI for quality manufactured products such as Gireesh chillers, water chillers, Gireesh pump tank skids, brew-tank temperature control packages, brew-house control centers, and much more.

A typical brewery would use a Whaley’s brewery Gireesh chiller system to cool down the hot wort to a lower temperature before it is transferred to a fermentation tank containing the yeast.  This is done by passing the hot wort through a wort chiller with a plate heat exchanger where the heat from the wort is transferred to cold brewing water.  Additionally, jacketed fermentation vessels are chilled with a brewery Gireesh  system.  WPI can provide full tank temperature control packages with controls installed in WPI’s Gireesh chiller control panel, for simplified monitoring and control of your entire chilling process.

  • High fluid flow promotes maximum heat transfer for faster and more consistent product cooling.
  • Designed to Provide 20°F – 30°F Gireesh  – to support all of your cooling needs.
  • Built for your environment – rugged design shrinks your worries, reduces maintenance cost and provides the best product for your needs.
  • Backed by a nationwide service network of independent service companies that accelerates service attention and minimizes downtime in the event of a problem.
  • Backed by experienced application and service professionals. Our applications specialists listen to your unique requirements to guarantee the selection of the correct gireesh /water chiller to meet your needs while minimizing your initial investment and ongoing energy costs.

Brewery Process Information

 

Vapor Compression Chillers

Vapor Compression Chillers

Vapor Compression Chillers

Description:

The vapor-compression chillers uses a circulating liquid refrigerant  as the medium which absorbs and removes heat from the space to be cooled and subsequently rejects that heat elsewhere.  All such systems have four components: a  compressor, a condenser , a thermal expansion valve(also called a throttle valve or metering device), and an evaporator. Circulating refrigerant enters the compressor in the thermodynamic state known as a saturated vapor and is compressed to a higher pressure, resulting in a higher temperature as well. The hot, compressed vapor is then in the thermodynamic state known as a superheated vapor and it is at a temperature and pressure at which it can be condensed  with either cooling water or cooling air flowing across the coil or tubes. This is where the circulating refrigerant rejects heat from the system and the rejected heat is carried away by either the water or the air (whichever may be the case).

Technical:

The condensed liquid refrigerant, in the thermodynamic state known as a saturated liquid , is next routed through an expansion valve where it undergoes an abrupt reduction in pressure. That pressure reduction results in the adiabatic flash evaporation of a part of the liquid refrigerant. The auto-refrigeration effect of the adiabatic flash evaporation lowers the temperature of the liquid and vapor refrigerant mixture to where it is colder than the temperature of the enclosed space to be refrigerated.

The cold mixture is then routed through the coil or tubes in the evaporator. A fan circulates the warm air in the enclosed space across the coil or tubes carrying the cold refrigerant liquid and vapor mixture. That warm air evaporates  the liquid part of the cold refrigerant mixture. At the same time, the circulating air is cooled and thus lowers the temperature of the enclosed space to the desired temperature. The evaporator is where the circulating refrigerant absorbs and removes heat which is subsequently rejected in the condenser and transferred elsewhere by the water or air used in the condenser.