APV: District heating systems

Benefits:

• Flexible in size, performance, and choice of components
• Tailored according to your requirements
• 9 standard types
• Comprehensive in choice of heat exchanger (all-welded, brazed, plate & frame)

Industries that use District Heating:

• HVAC

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APV: Direct steam system

he APV direct steam heating process offers a high degree of flexibility in terms of sterilization of a wide range of products such as milk, cream, custards, ice cream mix, baby food, milk concentrates and similar products.

Direct steam heating can be applied in two ways:

* Steam infusion

* Steam injection

Each has its own specific applications, depending on product properties and quality requirements.

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APV: Plate Evaporators

During the plate evaporation process, liquid is pumped between thin plates with the heating medium on the mating surfaces. The product is then evaporated with the vapor generated forming a high velocity core. This expansion in volume causes a high-velocity, thin film on the heat exchange surface providing efficient heat transfer.

Plate evaporators should be considered for applications that have:

• Capacities up to 27,000 kg/h water removal
• A need for future expansion
• Limited head space
• A particle size smaller than 600 Micron.

Features/Benefits:

• Improved product quality. The short heat contact period resulting from single pass operation and low liquid holdup eliminates product deterioration even when highly heat sensitive liquids are involved. The resulting concentrate is of the highest quality possible.
• Higher product concentration. The variety of plate evaporators available from APV allows custom concentrates to be produced. Ninety seven percent total solids or better are possible depending on feed material characteristics.
• Low liquid holdup. Very little product is actually in the plate evaporator at any time. This permits rapid start-up and shutdown with minimal waste. Small quantities of product may be processed economically.
• Easily cleaned. All stainless steel surfaces within the plate packs are fully accessible for easy cleaning. Normal CIP is done with low consumption of cleaning chemicals due to the low liquid holdup.
• Flexible capacity. By simply adding or removing plate units, varying evaporation rates may be achieved. Large expansions are possible with additional frames and plate units.
• Low installation costs. Due to the compact size and low weight, no cranes or special foundations are required for installation. Typically, an existing building on site is suitable and installation time is minimal.

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APV: Scraped surface heat exchanger

APV scraped surface heat exchangers (SSHE) consist of a jacketed cylinder with a rotating dasher holding rows of scraper blades. The product is pumped through the cylinder while the heating or cooling medium is circulated between the cylinder and the jacket. The medium can be steam, water or a refrigerant such as ammonia or freon.

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Features/Benefits:

• Able to heat and cool fluids with particulates up to 32mm
• Able to heat and cool high viscosity fluids
• Easy to open for inspection

APV: ParaTube

Features/Benefits:

• Working temperatures up to 545°F/285°C
• Design pressures to 871 psig/60 bar
• Flexibility in materials of construction from carbon steel to special alloys
• High particulate capacities
• Can handle high viscosity products
• Resistant to fouling
• Robust
• Easy maintenance

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APV: All-Welded Plates (Hybrid)

Functionality

The APV Hybrid plate heat exchanger design has no dead spots and provides very efficient heat transfer at low pressure drop values to ensure that it functions at a very accurate temperature. The plate side flow and the tube side flow are arranged in cross flow configuration in one or multiple passes over the plates. The plate pattern forms elliptical tube channels on the tube flow side and wave flow passage on the plate side. The depth of the plate pressure can be increased in order to allow greater flow rates or reduced pressure drop for the passage of larger particles. This functionality provides an optimal design for many process requirements and is achieved by enlarging the diameters of the elliptical tube channels, while maintaining the plate distance on the plate flow side. It is also possible to achieve a wide-gap condition on the plate flow side by welding the plates further apart. The APV Hybrid plate heat exchanger can be designed for a pressure range from full vacuum to 60 bar.

Like all our products, the APV Hybrid plate heat exchanger conforms with the quality assurance norm ISO 9000.

Features/benefits:

• Operational temperature range between -328°F and 1652°F ( -200°C and 900°C )
• Pressure range between vacuum and 871 psig/60 bar
• Fully welded construction (no gaskets)
• Broad range of construction configurations
• Compact design allows the installation of up to 6000 m� heating surface per unit
• Economic use of materials and low weight
• Exchange surfaces with plate thickness between 0.5 and 1.0 mm
• Available in a variety of high grade alloys
• Very efficient heat transfer even at low pressure drop
• Self-cleaning effect by means of strong turbulence, no dead spots in the flow
• Works as gas or liquid exchanger, condenser or evaporator
• Low filling charge and short length of stay protects the product
• Possible to achieve very accurate temperature approaches

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APV: Semi-Welded (Paraweld) Plate Pair PHE

APV ParaWeld is a range of laser-welded plate pairs for refrigerant and chemical processing and a logical alternative to shell and tube and all-welded plates. The pairs are particularly suitable for evaporation and condensing of refrigerants such as ammonia, as well as chemical and general process duties involving aggressive liquids that would attack conventional gaskets.

Features/Benefits

• Max. temperature: Up to 392° F / 200° C
• Min. temperature: Down to -36.4° F / -38° C
• Max design pressure: 435 PSIG / 30 bar
• High thermal efficiency
• Strong mechanical construction
• Allow handling of aggressive media
• Added security against leakage
• Flexibility to be expanded or reduced in size
• A small footprint and a low profile
• Patented Tri-Flash system

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APV: Brazed Plate Heat Exchanger

APV standard 'P' types offer AISI 316 stainless steel plates and connections with copper brazing. The units are rated for 450 psig/31 bar operating pressure with a maximum temperature of 437°F/225°C. P series are typically installed with a Y-strainer to protect the unit from debris, while custom insulation kits minimize ambient losses.


Source: www.tiarasakti.co.id