Big energy savings while drying times cut by 1/3 with Munters · Energy savings in confectionery...
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Big energy savings while drying times cut by 1/3 with Munters Benefits by replacing traditional ventilation with desiccant dehumidification in drying process: • Drying times cut by 1/3 • Increased production capacity • Huge energy saving per produced item • Improved product quality Case Study: Carletti, Denmark Energy savings in confectionery production Carletti is a Danish chocolate and candy producer that started in 1918 as a small wholesale company. Today, Carletti produces and sells a wide variety of chocolate and candy products through retailers for private consumers – primarily in Denmark and Northern Europe. In addition, they produce an assortment of coated candy products for industrial use in bakery, ice cream and dairy products. One of Carletti's two production facilities is placed near Aarhus in Denmark and the factory is certified to international standards to ensure the highest level of food safety. For many years already, Carletti has been using Munters desiccant dehumidifiers to secure a strictly controlled and constant production climate in many of their production processes.
Transcript of Big energy savings while drying times cut by 1/3 with Munters · Energy savings in confectionery...
Big energy savings while drying times cut by 1/3 with Munters
Benefits by replacing traditional ventilation with desiccant dehumidification in drying process:
• Drying times cut by 1/3• Increased production capacity• Huge energy saving per produced item• Improved product quality
Case Study: Carletti, Denmark
Energy savings in confectionery production
Carletti is a Danish chocolate and candy producer that started in 1918 as a small wholesale company.
Today, Carletti produces and sells a wide variety of chocolate and candy products through retailers for private consumers – primarily in Denmark and Northern Europe.
In addition, they produce an assortment of coated candy products for industrial use in bakery, ice cream and dairy products.
One of Carletti's two production facilities is placed near Aarhus in Denmark and the factory is certified to international standards to ensure the highest level of
food safety.For many years already, Carletti has been using Munters desiccant dehumidifiers to secure a strictly controlled and constant production climate in many of their production processes.
Dehumidification replaces ventilation
As a modern company with a strong focus on competitiveness, energy savings are a strategic goal. Carletti has recently worked on four major energy-saving projects together with Ole Jacobsen from the Danish Energy Consultancy. Two of these projects concerned the installation of dehumidification of process air in coating processes and converting oil burner into LPG-burner on their steam boiler.
Carletti used to have an older ventilation system to supply hot air to processes where there was a need for dry air to color, polish and dry products.Carletti has now invested in four desiccant dehumidifiers from Munters and has thus been able to reduce energy consumption by up to 50 %. The process itself is a slightly more expensive process, but in return, the production capacity increased by shortening the drying process from 19 to 12 hours for a batch of 4,500 kg chocolate lenses.
In other words: Much less energy is being used per produced kg, and production per hour increased considerably.
The quality of Carlettis chocolate lenses improved, since the colors are better when chocolate lenses are dried and polished with dehumidified air rather than heated air. In this way, the energy savings provided extra value.
Improved product quality as bonus
"We've got a significant productivity boost in addition to energy savings, which amounts to around five million kWh annually.The quality of our chocolate lenses improved because the colors are better when chocolate lenses are dried and polished with the dehumidified air instead of the heated air. So the product has actually been given added value on top of a huge energy savings, "says Kent Egsgaard, Facility Manager at Carletti.
Steam for rotor regeneration
Munters dehumidifiers are an example of the positive effects that can be derived by switching to more energy efficient solutions.These two energy projects (converting oil burner to LPG gas burner and installation of dehumidifiers) are closely linked, as a part of the steam from the gas boilers is used to heat the air that removes the absorbed moisture from the desiccant wheel (rotor) in the dehumidifiers.
The fact that gas is cheaper than oil, has reduced CO2 emissions and allows for stepless control of the energy supply - unlike the oil boiler which only had a high and low setting.
Pancoating kettles for liquorice products. The pipes distribute the dehumidified air from two new Munters MDU installations. Each unit can supply up to 24,000 m³ of air per hour and ensures a low and constant humidity year round for the two lines, each consisting of six pancoating kettles.
More projects coming up
The search for energy savings continues in Carletti and several projects that include Munters dehumidification are lining up.
Read more about the use of dehumidification in connection with drying processes: www.munters.com/productdrying
Facility Manager Kent Egsgaard og Energy advisor Ole Jakobsen inside a drying cabinet for confectionery products
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