Belimo RetroFIT+ – Increasing energy efficiency in existing plants (in German)

Duration: 23 mins

The air-conditioning systems in existing buildings – heating, cooling and ventilation – often offer plenty of potential for energy savings. After all, intelligent control of heating, cooling and ventilation loads contributes significantly to the energy efficiency of buildings. Belimo has the right solution for these purposes in its portfolio and offers a comprehensive concept for increasing energy efficiency with the topic "RetroFIT+".

In this educational video, we present a Belimo task force that analyses existing systems and develops proposals for increasing efficiency, for example by using other hydraulic circuits or pressure-independent valves. Find out which tools can be used to achieve this and what role intelligent field devices such as the "Energy Valve" can play.

Distributors and hydronic circuits – basic training

Duration: 27 mins

Which hydronic circuits are available? And which is the right one for my project? These questions are answered in the basic training, one of nine training courses on the topic of hydronics.

Six basic circuits cover more than 90 percent of applications. In this educational video you will learn more about these six circuits and their uses:

• Throttling circuit
• Injection circuit with 2-way valve
• Mixing circuit
• Mixing circuit with fixed pre-mixing
• Diverting circuit
• Injection circuit with 3-way valve

Basic knowledge on the design of pressure-dependent valves: Part 1

Duration: 14 mins

How do I design pressure-dependent valves? What is an a-value? What is valve authority? These questions are the focus of this basic training 2.1.

The educational video covers basic knowledge on the design of pressure-dependent valves and focuses in particular on the following points:

• Q = m x c x delta T
• Variable-flow part of the circuit
• A-value of heat exchangers
• Kv/kvs values
• Valve authority
• Characteristic curve

Basic knowledge on the design of pressure-dependent valves: Part 2 

Duration: 18 mins

How do I correctly apply the knowledge from the previous basic training 2.1 when designing pressure-dependent valves? And what formulas do I need for this? These questions are covered in basic training 2.2.

Using example calculations, this educational video conveys the knowledge needed to correctly design pressure-dependent valves. We will look at the following circuits:

• Throttling circuit
• Mixing circuit
• Injection circuit with 2-way valve

Indoor air quality and energy efficiency with AHUs 

Duration 39 min.

HVAC systems are often installed with the aim of maintaining comfort levels in a building. However, less is usually known about the health benefits for building occupants and the energy efficiency of the building. By using central air handling units (AHUs) we address both the sustainability and indoor air quality aspects.

In this educational video, three of these factors are examined and discussed in more detail in relation to AHUs and energy efficiency.

• Correct temperature and humidity control
• Effective filtration.
• Proper amount of outdoor air.

Master 1: Thermal Energy Meter (TEM), recording, regulation and invoicing of heating and cooling 

Duration: 32 mins

How are heat/coolingmetersdesigned? What is a MID certification? What are position control, volumetric flow control and power control? What must be considered when reading meters, invoicing and calibration regulations? These questions are covered in master training 1.

The following contents are covered:

• Thermal energy meter design (heat/cooling meter)
• Introduction to the control concepts
  • Position control
  • Volumetric flow control
  • Power control
• MID approval and calibration
• Basic knowledge on the new heating cost regulations and calibration law

Low delta T syndrome – causes and problems with low spread

Duration: 13 mins

What is low delta T syndrome, and what causes it? How can it be rectified? How do we determine the correct delta T? Also, why have we used the delta T manager function in energy optimisation for years? These questions are the focus of this educational video.

The following contents are covered:

• Reasons for low delta T syndrome
• Optimisation of hydronics
• Delta T manager – Function and type of action
• Digital condition monitoring

Measurement concepts (in German)

Duration: 36 mins

What does measurement concept, measurement point concept, and energy controlling mean? Why should the measurement concept be taken into account during hydronic planning? What are the contents of a measuring point concept? What are KPIs?

The educational video provides information on the integration of measurement concepts in hydronic planning and focuses in particular on the following points:

• Measurement concepts for billing properties
• Measurement concepts for energy controlling
• Optimisation of measurement points
• Energy data evaluation

Basics 3.1: Basic knowledge on the design of pressure-independent valves (Part 1) (in German)

Duration: 20 mins

What are the necessary fundamentals for professional design for pressure-independent valves? What are the different types? What needs to be considered? These questions are the focus of basic training 3.1.

The educational video covers basic knowledge on the design of pressure-independent valves and focuses in particular on the following points:

• Function and design of pressure-independent control valves
• Difference between mechanical/electronic
• What does valve authority mean?

Basics 3.2: Design of pressure-independent valves (Part 2) (in German)

Duration: 12 mins

How are pressure-independent valves designed/dimensioned? What is valve authority? What should be considered? These questions are the focus of basic training 3.2.

The educational video covers basic knowledge on the design of pressure-independent valves and focuses in particular on the following points:

• Design of pressure-independent control valves
• Difference between mechanical/electronic
• Valve authority

Special knowledge on hydronics and valves (in German)

Duration: 25 mins

You are already familiar with the basics of valves and hydronic circuits and now want to deepen your knowledge? Would you like to know more about the differences between globe valves and characterised control valves, about rangeabilities and the relevant characteristic curves? Then you've come to the right place with this educational video.

The seminar provides detailed knowledge for professionals focuses in particular on the following points:

• Input jump of valves, cleaning of valve seat
• Globe valve vs. Characterised control valve
• Valve characteristic curves
• Rangeability
• Cavitation
• Information DIN EN 52120-1 (replacement DIN EN 15232-1)

Consumption-based billing of energy costs for mechanical ventilation (in German)

Duration: 23 mins

In commercial buildings with mechanical ventilation, it has been common practice for many years to allocate ventilation costs to the various occupants according to a pre-defined key. The distribution key used is usually the area allocated to each occupant relative to the total ventilated area of the building. However, this approach does not take into account and support newer trends and requirements to further reduce energy consumption in buildings.

What are the options available today for consumption-based billing of energy costs for mechanical ventilation? What is required by the Buildings Energy Act? What are the technical requirements? And when does consumption-based billing make economic sense?

These questions are the focus of this educational video.

The seminar will focuses in particular on the following points:

• Solutions for consumption-based billing of energy costs for mechanical ventilation
• Buildings Energy Act and VDI 2077
• Cost-effectiveness requirement for billing
• Discussion of a cost allocation based on the actual volumetric flows in the distribution system

The educational video has been designed to be product-independent and generally valid, even if other manufacturers' products are used.