HRS - Tube Heat Exchangers | Unicus Series - Reciprocating Scraped Surface Get latest price

Continuous improvements have allowed HRS Heat Exchangers to apply the Unicus Series in a wide range of markets and applications. By increasing the stroke speed of the scraper bar we have been able to increase the heat transfer rates considerably. By adding new scraper types, we have adapted to the difficulties that new products may present. The increased range of models available has made it possible to offer economic solutions. From food industries to environmental, from heating and cooling to evaporation applications, the Unicus Series is a robust solution where other types of heat exchangers fail.

CHARACTERISTICS OF THE UNICUS

The Unicus Series heat exchanger consists of three main parts:

• The shell and tube part: Inside each interior tube a scraper bar is fitted.
• The separation chamber: This space separates the shell and tube heat exchanger from the drive cylinder that moves the scraper bars.
• Hydraulic drive cylinder: This part provides the energy that moves the scraper bars. The cylinder can be pneumatic (smaller models) or hydraulic (bigger models).

A key component of the Unicus Series is the seal that separates the inner tube volume from the separation chamber. The seal prevents leakage of the product to the exterior. Several types of seals have been developed depending on the application.

BETTER HEAT TRANSFER THROUGH SCRAPING

The scraping system consists of a stainless steel rod to which the scraping elements are fitted. Various types of scrapers have been developed for the different applications the Unicus Series can handle. Materials such as Teflon and Peek (polyaryletheretherketone) are used. 120° scrapers allow for working with larger particulates. The 360° scrapers are ideal for viscous fluid without particulates. As the product changes we adapt the geometry of the scraper. Scraping means fouling free heat transfer surfaces and increased ‘up time’ and performance.

UNICUS: A SCALABLE SOLUTION

As with any shell and tube heat exchanger scale up to bigger duties is as simple as increasing the shell diameter and adding more tubes in the shell. Unicus Series models are available from just one tube, up to 198 tubes. This gives the Unicus Series heat transfer areas between 0.7 and 180m².

APPLICATIONS:

Products:

• Dairy: Cheese, yogurt, creams, desserts, whey concentrate, ice cream, condensed milk
• Fruits: Juice concentrate, fruit preparation, fruit puree, diced fruit
• Vegetables: Processed vegetables, tomato concentrate
• Convenience food: Eggs, mashed potatoes, ketchup, mayonnaise, baby food, dressings, spreads, fats, oils
• Protein: Viscera, meat slurry, mechanically deboned meat, meat stuffing, minced meat, pet food
• Confectionary: Chocolate, pie filling, creams, pastes, marmalade, syrups, gelatine, starch, butter, margarine
• Beverages: Coffee extract, juice concentrate, yeast-malt extracts
• Cosmetics: Lotion, cream, gel
• Environmental waste: Waste concentration: brine, manure, food plant effluent, chemical waste, solvent recovery
• Biofuels: Oil extraction for biodiesel, biomass pre-treatment, thermal hydrolysis, fermentation, digestate concentration

Processes:

• Heating
• Cooling
• Pasteurisation
• Crystallisation
• Evaporation (see below)

TECHNICAL DATA

Standard Materials of Construction:

• Service side: AISI 304 stainless steel
• Product side: AISI 316L stainless steel
  Other material options available

Standard Connections:

• Service side: Flange
• Product side: Clamp/Flange
  All flange & clamp types available

Surface Finish:

• External: Polished or Matt
• Internal: <0.8μ

Design code and compliance:

• PD 5500, PED 2014/68/EU, 2006/42/CE, ASME
• FDA, 3A, TR CU 032, DOSH Compliant