HVAC 4.0: Modern HVAC for smart buildings

Engineering HVAC 4.0 for smart buildings

This is where HVAC 4.0 starts, The transition to HVAC 4.0 requires a close cooperation between many stakeholders. And in the end all of them benefit.

What is a smart HVAC system?

Modern HVAC is complex. Digitalization has changed the way we live, work, and interact with the world, and it’s changed the way HVAC systems are controlled. Danfoss is part of the smart HVAC transition, and we call it HVAC 4.0.

HVAC 4.0 is about providing comfort, economy, and sustainability through intelligent control of heating, ventilation, and air conditioning systems in buildings. With data from smart sensors, remote control makes it possible to optimize an indoor climate around occupancy patterns and usage profiles.

Because ultimately, the smartest buildings are the most energy efficient, comfortable, and convenient. The heart of this is HVAC data—vital for developing intelligent buildings that can become home to smart environments. We develop smart solutions that provide or use HVAC data for Active Energy Management (AEM). The data allows remote commissioning, predictive maintenance, and optimization of heating, ventilation, and cooling systems.

Danfoss provides technologies for improving the efficiency and quality of smart HVAC systems, gathering the key data to drive intelligent solutions for Building Management Systems (BMS) or cloud-based solutions that remotely control and monitor building heating, ventilation, and cooling.

Our smart HVAC systems provide the real-time data you need to make informed decisions about building performance. Our equipment complements cloud-based solutions and allows intelligent software to provide actionable insights. Our innovations help create more comfortable indoor environments, optimize energy usage, and assist in the management of your facilities.

Ultimately, the trend to develop smart buildings is all about making them more energy efficient for lower environmental impact, less strain on the local grid, and lower day-to-day costs to the building owners rather than eating into profits. And, of course, it makes the building more comfortable for people who spend around 90% of their time indoors.

Why upgrade to a smart HVAC system?

The transition to HVAC 4.0 requires a close cooperation between many stakeholders, all of whom will greatly benefit from the change.

End users experience personalized comfort, better health, and improved productivity.
Building owners experience operational excellence with lower costs, higher energy efficiency and increased ROI. Premises with green building certification are more desirable and often command higher rental prices.
Specifiers and System Integrators provide innovative solutions and reduce liabilities
Service and maintenance turns into a fact-based, easier manageable process that is less reliant on manual involvement and simpler to troubleshoot. Cloud-based solutions working with the building management system can also allow the data to be accessed remotely, keeping key stakeholders informed of the day-to-day situation

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Features and benefits

Why is hydronic balancing important?

Heating and cooling our buildings accounts for about 30% of the final energy consumption in the EU.

The optimization of HVAC systems in buildings requires more than simply improving the efficiency of the heating or cooling generation equipment (e.g. heat pumps, boilers, chillers).

It is also vital to look at how heating and cooling is distributed from the central generator to points of end use, the terminal units such as Fan Coil Units (FCUs) and radiant panels.

EU legislation, including the Energy Performance of Buildings Directive (EPBD) and Ecodesign, has put forward important provisions to optimize technical building systems. But these have not yet fully addressed market failures and therefore the potential of hydronic balancing remains largely unrealized.

Why PICV technology is key in modern HVAC system

Danfoss AB-QM has been at the forefront of changing the market to more efficient solutions for balancing and controlling modern HVAC systems. The concept of combining a control valve and a built-in pressure controller has now been accepted as a standard in most markets worldwide.

The AB-QM PICV combines precise control with great convenience. It is simple to select, effortless to install and straightforward to set.

By combining multiple functions into one valve the AB-QM is also an extremely cost-efficient choice. Through shortening the design process, time saving during the commissioning stage and by efficiency gains during operation it is a financial no-brainer with either negative or extremely short pay-back times.

Benefits of digital actuators in HVAC

Remote mass upload of designed flows via configuration tool / BMS (up to 64 actuators / valves at once)
Setting and correction of the flow can be done centrally from the BMS / Computer
Flushing and purging of the system centrally from BMS / Computer (all at once, one floor at a time, one valve at a time)
Use of standard BACnet or ModBus bus-communication and pre-fabricated cables for easy BMS integration
Full transparency of energy consumption in the building for heating / cooling using AB-QM and NovoCon

How to gather HVAC system data?

HVAC 4.0 systems are not just smart, they are clever. They know how to spot efficiency problems and how to reduce energy costs.

The key to success is actively using the information collected from building and HVAC data and stored in the Building Management System.

Digital IoT actuators provide substantial data and can be expanded with data from optional temperature and flow sensors.

This helps you to manage the energy flows and plan service and maintenance activities.

Image Copyright: Bert Teunissen/EDGE

Are you looking for solutions that contribute in reducing your buildings' carbon footprint?

Then have a look at our animation video about Danfoss Digital Hydronics.

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Applications

Terminal units

Terminal units such as fan coil units, chilled beams, or radiant panels, provide heating and/or cooling in each room of a building. They require hundreds or thousands of control valves and actuators for the temperature control. Using smart digital actuators and Pressure Independent balancing and Control Valves (PICVs)passes the buildings’ BMS real-time HVAC data while the dynamic hydronic balancing ensures optimal energy-efficiency.

Learn more about Terminal units

Air handling units (AHU)

Air Handling Units provide the buildings with fresh air. The heating or cooling coils distribute a large amount of water. Optimizing the flows with large dimension PICVs equipped with smart digital control of supply and/or return temperatures, combined with AC-drives makes the units perform much more efficient.

Learn more about Air handling units

Domestic Hot Water

Domestic Hot Water systems are a challenge to keep safe from legionella. By monitoring the main flow and temperatures at the source and using Thermal balancing valves you provide a safe and reliable solution. Equipped with electronic disinfection controls and connected to buildings’ BMS the data is easy to use for remote monitoring and preventive actions.

Learn more about Domestic hot water

Smart HVAC control solution for I-tower at WTC Amsterdam, the Netherlands

Reference case video about the modernization of the HVAC system in the I-tower of World Trade Center Amsterdam, the Netherlands.

Related products

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MTCV with CCR2+

MTCV Thermal balancing valves provide a dynamic, temperature based, balancing solution for drinking water applications. Combined with the CCR2+ a smart and energy-efficient electronic control solution for monitoring and disinfecting DHW systems is established.
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NovoCon® S Digital Actuator

With NovoCon® S Danfoss revolutionizes the way hydronic balancing and HVAC control work together. The first of its kind digital HVAC actuators are directly connected with a Building Management System (BMS). This enables System Integrators to design state-of-art, Internet of Things (IoT) solutions.
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AB-QM 4.0 Pressure Independent Control Valves (PICV) DN15 - DN20

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Pressure Independent balancing Control Valves (PICV)

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Case studies

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Outstanding HVAC flexibility after high-end office building renovation

Building: Office
Application: Hydronic balancing and remote control of 4-pipe heating/cooling change-over system
Challenge: Ensure a flexible to use HVAC system with DGNB sustainability certification
Solution: Digital NovoCon actuator combined with AB-QM control valves and NovoCon CO6 combined with ChangeOver6 as a combination balance the system hydronically, allow remote access via a BMS and control the room temperatures during both heating and cooling operation.
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HVAC control at Katowice business centre, Poland

Katowice Business Centre is a modern office building where Danfoss hydronic balancing solutions are used; AB-QM balancing and control valves in combination with revolutionary NovoCon® actuators.