The Benefits of Heat Exchangers In Process and Clean-in-place

Pharmaceutical, food, and beverage operations realize the value of heat exchangers in several ways:

1. Heat exchangers heat the cleaning fluids that remove residues from systems components.
2. Heat exchangers create consistent temperatures for pasteurizing andClean-in-place (CIP).
3. 它们热水用于有效漂洗食品生产设备（坦克和管道）。
4. They can be placed on skids for small-footprint, flexible CIP equipment positioning.
5. Heat exchangers themselves are CIP'able because their designs induce turbulence when systems maintain sufficient flow rate.
6. 他们没有污染加热器传热d fluids.
7. Energy savings: regenerative heat transfer conserves energy by re-using heated fluids to heat fluids in repeatable cycles.

TheHandbook of Water and Energy Management In Food Processingreports that potential energy savings of between 50 and 70% could be achieved with heat recovery, depending on viscosity and design of exchanger. Greater efficiencies in processing also result in lower water consumption worth thousands of dollars per site (P. 564).

Heat exchangers also have an important role inclean-in-place, which is the process of cleaning system components without having to dismantle or open the equipment for cleaning. In CIP, the main purpose of heat exchangers is to heat the cleaning water andsolutionsto a consistent temperature to aid in the removal of residue.

While performing their functions in processing and CIP, heat exchangers help reduce utility consumption by conserving water, electricity, and steam.热交换器的常见应用包括用于生物技术和制药，化学，食品和饮料和个人护理产品的加工。

Advantages of Each Type of Heat Exchanger

To meet the heating and cooling needs of such an array of applications and products, heat-exchanger designs have evolved to meet a range of site-specific temperature-modulation requirements.

Flexible plate and frame heat exchangers

Because plate and frame heat exchangers are designed to increase or decrease in capacity depending on application,they are among the most versatile heat exchangers available.

In addition to variations in height and width that accommodate installation and system integration,plate and frame heat exchangers can scale in depth as system capacities change.

Efficient heat transfer of shell and tube heat exchangers

处理器使用壳管热交换器进行一般产品加热和冷却。其设计的高剪切力和湍流使生物膜积聚的风险最小化并确保有效的传热。一家制造商的壳体和管热交换器的制造商线在最多10巴的压力下运行，操作温度为150°C，使热交换器易排出。

Shell and tube heat exchangers meet the industry’s rigorous demands for product hygiene by eliminating the risk of cross-contamination.

Double-duty scraped-surface heat exchangers

通过执行加热职责，同时还刮擦内部表面以防止污垢，scraped-surface heat exchangers add value to systems by keeping them running longer between cleaning. In scraped-surface heat exchanger applications, the product enters the cylinder at the bottom and flows upwards.

The heating or cooling medium travels in a counter-current flow through a narrow annular channel. Typical applications include processing of ketchup, mayonnaise, hummus, chocolate spreads, fruit pie fillings, gravies and sauces, whipped/aerated products, peanut butter, pizza sauces, puddings, salad dressings, and baby food, among others.

Rotating blades continuously remove product from the cylinder wall to ensure uniform heat transfer. The product enters the cylinder in a corkscrew pattern in the same direction as the rotating scraping assembly.The design of scraped surface heat exchangers preserves product quality by providing gentler product handling.Both product flow and rotor speed can be adjusted to suit the properties of the product in the cylinder.

Scraped surface heat exchangers are common in the food and personal care industries. Ensuring continuous production requires uniform heat transfer, but the consistency or content of some food products hinders efficient heat transfer.Scraped-surface heat exchangers meet the need for efficiency by keeping product off the walls and in the mix where they belong.

Plate and Frame	Shell and Tube	Scraped Surface
高效率	Heat transfer to viscous fluids	Heats and scrapes
Highly expandable	Higher PSI	Low downtime

Heat exchangers control temperature in CIP fluid supply to circuit-specific set points.

CIP systems connect directly to heat exchanger connections and circulate a mixture of heatednon-toxic cleaning agentsthat effectively remove scale, product deposits, and bio-fouling to clean process surfaces and restore performance of system components.Custom fabricated CIP systemsare suitable for very large heat exchangers, which require expertly engineered CIP solutions.

Processing at high temperatures, with hard water, or high pH levels increases risks of fouling or scaling, socleaning is requiredto maintain efficiency. CIP equipment circulates cleaning chemicals and rinses to flush interior surfaces of heat exchangers without having to disassemble them.

After each cleaning phase, the cleaning solution is routed to a drain or back to the detergent tank for re-use.A normal sequencecould include initial water rinse, lye cleaning, intermediate water rinse, acid cleaning and final water rinse followed by chemical or hot water disinfection.The temperature, flow and detergent concentration in the CIP return line are automatically controlled throughout the cleaning cycle.

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Heat exchangers are CIP'able

CIP effectiveness是由清洁时间,cleani强度ng chemicals, the temperature of cleaning chemicals, and the amount of turbulence,so heat exchangers have a key role to play in operational productivity and effectiveness.

在CIP期间，清洁溶液通过热交换器泵送，在那里将其加热到所需的温度，并且在促进传热的板设计中，促进传热也产生有助于板清洁的湍流。然后将解决方案路由到目标系统并返回到CIP模块中的循环箱。