Envac AB

- Performance Assessment Services


With Envac’s performance assessment services we offer our full range of skills, knowledge and competence acquired through years of experience working with automated vacuum waste handling systems. The aim is to produce enough data for our customers to make an informed decision about their system.

For example, over the years the behavioural pattern of users may change. There may also be changes at local or national level with regards to legislation and regulation. There may also be an increased demand for fraction collection or tighter control when it comes to certain waste streams. Questions around improving recycling or energy saving measures are recurrent issues.

Basic Assessment
A basic assessment is the first step, which examines a system’s statistics and historical data. It includes:

  • Energy consumption (monthly/weekly)
  • Total waste flow per fraction (ton/month/week)
  • Service statistics

Adapting to a changing environment
After years of operation an Envac automated waste handling system may need to be readapted to meet the needs of its environment. Adaptations will deliver significant improvements in both capacity and energy consumption.

Environmental Assessments
Envac engineers can assess the environmental impact of an automated waste handling system and make proposals on how to improve this even further. We also offer environmental and financial evaluations when compared with other waste collection methods.

The environmental assessment underpins our customers’ on-going environmental goals such as:

  • Refining organic waste so that it is pure enough to be used for biogas production
  • Linking the waste collection strategy to new recycling goals

A key consideration for any automated waste handling system is electricity consumption. Having Envac engineers assess the system and recommend steps to adjust and reduce this wherever possible plays a vital role in achieving environmental and economical benefits.

Older systems can easily be adapted to reduce energy consumption. By installing frequency inverters we can reduce energy peaks in electricity. Installing updated control equipment also enables the system to operate using minimum energy consumption. Using level sensors in inlets together with our VDOT (Valve Dynamic Open Time) system reduces the amount of energy required.

In order to reach optimal use and ensure cost efficiency the following factors are considered:

  • Run-time schedule including level sensors
  • Electrical tariff and electrical supplier contract
  • Valve, air leakage and pressure drop
  • Heat recovery
  • Exhauster operations
  • Hardware/software
  • Waste stream

Waste stream control
Waste streams and the way waste needs to be handled can change over time. From enhancing the purity of recyclables to adding a new waste stream, Envac can offer the guidance and support needed to re-adapt the system to a continually changing environment.

User information campaigns
It is important to make sure that users are well-informed about what can be disposed of in the vacuum system and what cannot.If there is a blockage in the pipe, it is most likely caused by an object too large for the system.From our experience we can tell that the more the users know about how the system works the better the system will perform.

We can help you formulate information packages and communication campaigns and to prepare pedagogical information to increase the recycling rate. We have many years of experience in creating customized information packages.

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