Don’t miss the invisible costs

Setting up a processing line involves a lot of decision making. Whether you’re a dairy investing in a new plant, or an integrator who engineers solutions for the food industry, the driver for many of those decisions will be cost. With major equipment like a homogenizer, however, the sticker price only tells you part of the story.

”I often joke that buying a homogenizer is like getting married. The choice you make today is one you’re going to live with for the next 20-25 years. During that time, the daily operational costs will become much larger than the initial investment, so you need to keep these in mind already at the start.”

PAVLOS KOUROUTSIDIS – HOMOGENIZER APPLICATION SPECIALIST AT TETRA PAK.

These operating expenses are in effect “invisible costs” that you need to factor when calculating your investment and the cost of your line. To help, our experts have put together a list of the top five operational factors that can influence the total cost of your homogenizer.

1. Energy

Energy consumption is often the biggest factor influencing the total lifecycle costs of a homogenizer. And the biggest factor influencing energy consumption is homogenization pressure.

 

In other words, a homogenizer that runs at 250 bar will have higher energy needs than a homogenizer running at 180 bar. With higher pressure demands, more power is needed to drive the pistons that pressurize the product and push it through the gap of the homogenization device. In a continuous production environment where the homogenizer is running all day, the costs of that additional energy can quickly add up.

 

For most businesses, energy demands are also no longer just a cost consideration. With sustainability managers looking for new ways to make plants more energy efficient, and thereby lower the overall carbon footprint of a line, the power requirements for individual pieces of equipment are increasingly under scrutiny.

 

It is therefore important to get homogenization pressure just right. Many plants assume they need more pressure than is actually required to achieve the right level of homogenization. In some cases, it can be possible to limit pressure – and thereby energy consumption – and still reduce particles and fat globules down to the desired size.

2. Maintenance

Increased homogenization pressure not only impacts energy needs. It will also drive up the cost and frequency for service on your machine.

 

Higher pressure in the homogenizer puts greater stress on a number of critical parts, such as valves and seals. The resulting wear and tear means that service must be conducted more regularly than on a machine configured for lower pressures, resulting in significant added maintenance needs over time. To avoid the risk of failure, parts will also need to be replaced more frequently, leading to a hefty investment in spares.

Service on homogenizer

3. Downtime

Maintenance costs are one thing, but increased wear and tear also increases the risk that something can go wrong during production, leading to unplanned downtime. In fact, the overall reliability of a homogenizer is an important consideration. How proven is the design? Are the wear parts made of robust materials? Is there easy inspection and access to parts so issues can be identified before they cause problems?

 

Although not often considered when investing in new equipment, unplanned downtime can greatly contribute to the costs of a machine. Not only does it further add to your maintenance needs, it also cuts into profitability since your line will be standing still until the problem can be resolved.

 

The impact of downtime is not only a factor of the machine design, but also of your suppliers’ capabilities. For example, if your supplier is unable to rapidly deliver spare parts when something goes wrong, you could be stuck without a homogenizer for days – or even more than a week. Extended downtime in extreme cases becomes even costlier due to product loss, as unprocessed ingredients that spoil will need to be thrown away.

Two homogenizers, saving time icon

4. Water consumption

As with energy consumption, the water required by different pieces of equipment has an impact on both the cost and environmental footprint of your processing line. Optimizing water consumption, and identifying technologies that use water more efficiently, is therefore a focus for both operations and sustainability managers.

 

Piston cooling systems are therefore relevant to consider for certain types of homogenizers, as these can have a big impact on the need for cooling water and therefore the overall water consumption of a line. Different types of cooling systems are available today, and some require far greater amounts of water than others. In some cases, the difference in cooling water consumption between two technologies can be over 50%.

Homogenizers and water

5. Product quality

Homogenizers play an important role in securing the right level of quality for your product. In dairy and ice cream applications, for example, homogenizers are used to reduce the size of the fat globules in the milk, and thereby create a product with the characteristics that match your consumers’ demands.

 

While product quality may not immediately seem like a “cost” consideration, it can ultimately have a big impact on your operation’s profitability. Having technology that reliably delivers accurate homogenization ensures that you have a consistent product to meet consumer expectations. This, in turn, is an essential part of building a trustworthy brand that keeps consumers coming back for more.

 

Investing in a lower quality homogenization solution may save money in the short term. But it increases the risk of inconsistent results that hurt your product quality and profitable potential. It also makes it more likely that you will be using inefficient technology that has higher pressure, energy, maintenance and water demands. In short: considering all of these factors from day one improves your chances of achieving the lowest possible costs right from the start.

Two homogenizers, quality icon

Want to learn more about TCO?

Read what our experts have to say about what to think about when choosing a homogenizer for an initial dairy or ice cream line.

Find out more

Tetra Pak Homogenizers 15C and 20C

Tetra Pak® Homogenizer 15C and 20C

Homogenizers delivering reliable product quality while minimising complexity and costs in your operation.

Service on homogenizer

Plug, play, and start producing

Tetra Pak® Homogenizers 15C and Tetra Pak® Homogenizer 20C have been engineered to make your life easier – right from day one.

STREAMLINED DESIGN

HD21: Up to 25% lower energy consumption

Tetra Pak® Homogenizers 15C and Tetra Pak® Homogenizer 20C are built with the highly efficient HD21 – a single homogenization device with an integrated second stage. In contrast to two-stage homogenizers that require two devices in a series, this means a reduced number of parts and a smaller footprint. With the added benefit of turnability for double parts lifetime, the use of the HD21 device can help secure significant long-term savings.

Homogenizer and homogenizer pump, HD21

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