Ventilation for health care and public facilities | Lindinvent


No matter what space we look at: Why is a smart climate control needed?

A sustainability perspective
We do not leave the vacuum cleaner on when not in use. We do not have tap water switched on when we leave the sink.
Lindinvent works with smart systems to create and maintain an attractive indoor climate for sustainable energy use by adapting needs for air volumes and the need for additional cooling or additional heat. The system has become a standard.

Lindinvent's web tool LINDINSPECT for visualization enables commissioning and operation to be monitored. The system becomes available and thus reliable. The need for service can be analyzed. Installations that do not work can be identified and measures can be tried to reach both indoor climate goals and a responsible energy use.

About taking responsibility for energy use
Regardless of electricity market prices or other energy prices, there is reason to have control over a property's energy use. Lindinvent's system adapts the room climate to the degree of use. Studies show that the attendance rate in a property reaches a maximum of 60% (average level of about 35%) during daytime. Of course, premises and other spaces not used should not be ventilated as in normal activity. Most commercial properties follow similar patterns. The degree of utilization varies throughout the day and with variations in operations over the year. Here, a smart system for climate control is needed.

Low energy consumption
A property does not need to use 143.5 kWh per square meter and year (according to the Swedish Energy Agency's STIL surveys) that investigations point to. Now, climate systems can provide an energy consumption below 53 kWh per square meter and year, even if the building is built in the 60's and does not have additional insulation.

Need for additional heat or cooling
Our solutions work at very low supply air temperatures. Low supply air temperatures enable a lower air flow in the system. Lower flow levels result in a very efficient heat recovery. It may turn out that there is no need to install any equipment for heating in addition to heat recovery. In addition, it can be found that the heavily sub-tempered supply air only needs increased cooling capacity installed if the climate has to be kept at normal comfort level under extreme conditions.

An example of a smart and sustainable climate control
At an outdoor temperature exceeding 21 degrees, it is not possible to cool via supply air. Cooling with 21-degree supply air creates large airflows. A smart climate control does not attempt to cool with supply air when the supply air temperature is above a specified level. However, a measured carbon dioxide content above the set point will always increase the air flow up to a maximum flow.

When rebuilding
Lindinvent develops solutions to avoid the need for rebuilding of duct systems. Supply air devices that can work over a large flow interval but which can also remove a large static pressure can be the solution that allows parts of an existing older duct system to be maintained.

To be able to realize the potential of an efficient and stable climate system
Several factors contribute to an increased property value. There are a number of positive consequences to consider in connection with investment decisions and indoor climate:

  • An overall solution where the need for cooling is also taken into account.
  • Effective climate control provides increased productivity. Too high / low temperature of 4 degrees lowers the productivity of a person by about 5% and more fresh air increases productivity by about 3%.
  • A modernly equipped property can be monitored over the internet, it reduces operating and maintenance costs. Ongoing optimization and debugging is performed in a fraction of the time that is otherwise required for data collection and analysis.
  • New ventilation solutions are quieter. This lowers costs for sickness absence caused by stress and noise.
  • New technology, better comfort, lower operating costs, reduced energy use, a higher local utilization, more interesting premises for the tenant, less vacancies.

Experience-wise, many look too narrowly at initial investment costs and possible energy saving per year. This analysis can lead to disregarding, or not at all considering, the full value of the investment proposal.





Example of registered presence during the period January to September in an office property (maximum level about 50%)

If there is no one in a room, ventilation can be radically lowered to reduce energy consumption. Similarly, high presence and activity require increased ventilation. A smart climate system takes into account the degree of presence. The attendance rate will be decisive for the total cooling effect and the heating power needed to maintain the desired climate.

Lindinvent's system has built-in or external presence detectors installed. The equipment provides particularly good conditions for both following and determining the attendance rate at both the room level and the total property level. This provides really good information about the presence both at room level and at the aggregate level for the entire property.



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