Cooling Filtration

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Process Efficiency Products

[Why Filter Cooling Towers] [Why Filter Process Water] [PEP Products]

WHY FILTER COOLING TOWER?

Introduction:

Dirt causes problems.are your cooling costs more than they should be? Does your equipment wear out faster than expected? Do you have to clean chiller tubes too often? These and problems like them can plague any industry that uses water. It's a simple fact; any system runs most efficiently when it's clean. This is especially true for process water and cooling systems.

Fortunately these problems are preventable. PEP specializes in preventing problems in cooling towers and industrial water systems. Of course, if you already have problems we will be happy to help you solve them and prevent their reoccurrence.

Cooling Tower Benefits:

In addition to the obvious benefit of eliminating the wear and tear on cooling machinery, installation of a PEP filter will lead to increased efficiency and cost reduction.
Fine sediments become incorporated in scale deposits on the surface of chiller tubes, forming a foul layer that inhibits heat flow across the tube walls. Elimination of fine particles (0.25-20 microns) with a PEP filtration system will prevent their incorporation into a foul layer.

A surprisingly thin foul (scale) layer will reduce heat flow significantly:

Foul Thickness and Resulting Increase in Energy Use*:

Scale Thickness (in) Foul Factor (hrft²F/BTU) Energy Increase %

0.006 0.0005 5.3

0.012 0.001 10.6

0.024 0.002 21.5

0.036 0.003 32.2

0.048 0.004 43.0

Increased Energy use means Decreased Efficiency and Higher Costs.

*Data from Carrier Corp.

Filters at Work:

Corroded and Clogged Chiller tubes.
Chiller Tubes after 11 months of use with a PEP Filter.

Summary:

Clean water will reduce your costs for energy, maintenance and chemicals while extending the life of your equipment. Clean, treated water therefore provides a large return for a small investment. Clean filtered water normally returns your investment in two years or less while providing a lifetime of benefit.

WHY FILTER PROCESS WATER?

Why you Ask?:

In addition to increased efficiency in heat exchange, any industrial process water system will benefit from reducing your system's particle load.

The surfaces in your system are subject to less abrasion and wear (How long would your car last without an oil filter?)

Longer Equipment Life. You invest a lot of money in your process equipment. Dirt and corrosion shorten the life of this machinery requiring that they be replaced before their time. This robs you of your investment dollar...clean water increases equipment life and provides greater return on investment.

Reduction of particle load will reduce your biological problems. Particle surfaces are ideal habitats for bacteria and algae, and supply the nutrients they require for growth.

Particles attract chemicals used to treat water. Removal of particles will therefore enhance the action of your water treatment program.

Development of a foul layer produces micro-environments with corrosive chemical conditions. This results in sub-deposit pitting and corrosion. The foul layer also prevents chemical treatment from reaching the surfaces it is designed to protect. Finally, micro-habitats in foul layers harbor corrosive bacteria. Preventing development of a foul layer therefore reduces corrosion.

The cleaner your system runs, the less maintenance it requires. By reducing particle load you reduce the need to clean and replace worn parts. A cleaner system reduces worry and saves money.

Summary:

Clean water will reduce your costs for energy, maintenance and chemicals while extending the life of your equipment. Clean, well-treated water therefore provides a large return for a small investment. Clean filtered water normally returns your investment in two years or less while providing a lifetime of benefit.

PEP PRODUCTS

PEP Provides a variety of different products and Services. These include:

Technology

Mechanical Filtration
- Sand and Multimedia Backwashable Filters
- Bag Filters
- Cartridge Filters
Separators
- Hydrocyclone Centrifugal Separators
Adsorption Filtration
- Activated Carbon
- Organo-Clays
- Greensand
- Diatomite
- Perlite
- Other Specialized adsorption Media upon Request

Engineered Skid Systems

- Skid Systems with PEP Technologies include: pumps,
motors, instrumentation and PLC Control
- Fully Customized Applications, Designs and Innovations
- ASME Code Manufacturing
- UL Certified Panel Shop
- Unique Approval Packages and Documentation

The following are some of our more popular products:
(click on picture for a more detailed description)

SMF-FG & FG E-Class Series:
	An economically priced, pre-packaged filter assembly that comes skid mounted and ready to install. Fiberglass vessels in this series are available in diameters from 20" (305mm) to 30" (762mm) with flow rates from 2 gpm (0.13 l/s) to 98 gpm (6.2 l/s)

SMF-CS Series:

An economically priced pre-packaged filter assembly with a skid mounted epoxy-lined carbon steel vessel. Vessels are available in diameters from 12" (305mm) to 30" (762mm) with flow rates from 2 gpm (0.13 l/s) to 98 gpm (6.2 l/s)

HMF Series:

A pre-packaged filter assembly that comes skid mounted and ready to install. The standard HMF is designed for pressures up to 100 psi (700kpa) though higher pessures are available. The filter tank is epoxy-lined carbon steel. Vessels are available in diameters from 12" (305mm) to 42" (1067mm) with flow rates from 2 gpm (0.13 l/s) to 192 gpm (12.1 l/s).

BMF Series:

A custom system designed to meet the most demanding specifications. The tank is constructed of epoxy-lined carbon steel and can be made to withstand pressures up to 350 psi (2450 kpa) and temperatures up to 350 deg F (177 deg C). Special media can be employed for the removal of dissolved contaminants, adverse taste, odor and color. Vessels are available in diameters from 24" (610 mm) to 120" (3000 mm) with flow rates from 6 gpm (0.4 l/s) to 1500 gpm (95 l/s). Standard options for the BMF Series include skid mounting, system-matched pumps and piping between pump and filter.

CL Series:

A filter specially designed for closed-loop pressure systems. The filter vessel is constructed of epoxy-lined carbon steel and can withstand temperatures up to 300 deg F (149 deg C) and pressures up to 300 psi (2100 kpa). Vessels are available in diameters from 12" (305mm) to 42" (1067mm) with flow rates from 2 gpm (0.13 l/s) to 192 gpm (12.1 l/s). The CL filter can also function as chemical pot feeder. Standard options for the CL Series include skid mounting, system-matched pumps and piping between the pump and filter.

PSF Portable Sand Filter:

A portable sand filter that provides filtration to 0.5 micron for spot treatment of suspended solids in fluids. The PSF is skid mounted on wheels and include system-matched pumps and motors, automatic controls, instrumentation, quick-disconnect hose fittings (up to 225 psig or 1575 KPa) and an electrical cord reel. Flow rates vary from 15 gpm (1 l/s) to 200 gpm (12.5 l/s) at operating pressures up to 300 psig (2100 KPa).

BGFS Bag Filter Systems:

PEP housings can act as either strainers to capture large particles or bag filters for removal of finer size fractions from water or process fluids. Bags have retention ratings from 0.35 micron to 800 microns. Units are designed for pressures of 150 psi (1050 KPa) or 300 psi (2100 KPa) at temperatures up to 450^oF (232^oC). ANSI 300# flat closures can increase this rating to 740 psi (5180 KPa). Bag materials, fittings and tank materials compatible with a variety of industrial chemicals are available.

Cartridge Filter Systems:

The PEP up-flow cartridge filter uses 100% of the available filter area. SCF filter systems are made of stainless steel with removable lid for easy cartridge access. The vessel is rated at 150 psi (1035 kpa), at 150 ^oF (65.5^oC). Cartridges can remove particles from 100 to 0.35 microns, and can be cleaned for reuse. Vessels can be fitted with activated carbon cartridges to remove taste, odor and industrial chemicals.

LMF Hydrocyclone Series:

A hydro-cyclone separator is capable of removing particles from 5 to 74 microns. It uses no filter media. Instead, centrifugal force is used to remove suspended solids. The system consists of an epoxy-lined carbon steel vessel (150 psi/1050 kpa) and a sludge collection chamber at the bottom of the unit. Units are available with flow rates from 8 gpm (0.5 l/s) to 1500 gpm (94.6 l/s). Standard options for the LMF Series include automatic controls to purge the sludge chamber, system matched pump and steel channel skid.

Activated Carbon Filters:

Activated carbon is the best all around medium for removal of dissolved contaminants from water. Our meticulously engineered activated carbon filter can be expected to reduce many water contaminants to non-detectable levels suitable for discharge. In addition, activated carbon can remove contaminants from a variety of other fluids used in modern industrial processes.

PSJ Sweeper Jet Systems:

The PSJ Sweeper Jet system is effective in preventing accumulation of dirt, scale, airborne debris, sediment and other suspended solids in a cooling tower basin or other water-holding reservoir or sump. The PSJ system directs suspended and sedimented solids towards the suction intake of the filter system where they pass through the filter and are removed.