Intelligent heating and cooling management for stable energy flows
Efficient use of waste heat and cold storage throughout the year
- Commissioning: 2016
- Version: VarCon380 PRO
- Storage volume: 5000 l + 2000 l + 500 l
- Special feature: Cooling with geothermal energy
- Press release
The plastics processor SOMA cools its injection molding machines using four Terracool high-performance energy piles (HEP). Thanks to the 2000-liter cold storage tank, the cooling circuit is also able to cope with peak loads.
Thanks to the 2000-liter cold storage tank, the cooling circuit can also cope with peak loads. In summer, the waste heat (up to almost 100 kW) is fed to the upper area of the HEP, extracted via a heat exchanger and slowly released into the surrounding ground. In winter, the production waste heat (up to 40 °C) is used for low-temperature heating.
Heat at more than 65 °C is supplied by the 11 kW air compressor. It feeds the large heat storage tank and the 500-liter vessel with the fresh water heater. To prevent 65 °C hot water in the 5000-liter storage tank from being cooled down by the machine waste heat, the heat is coupled into and extracted from the stratified storage tank at different heights. All heating and cooling flows are managed by the varmeco VarCon380 Pro control system, which has been expanded accordingly with modules.
Frequently asked, simply explained
From a physical point of view, energy is always conserved. However, it consists of usable parts, the exergy, and not directly usable parts, the so-called anergy.
Energy = exergy + anergy
In technical thermodynamics, exergy refers to the part of the energy that can perform work. In heating technology, exergy is the part that leads to heat flows due to the higher temperature level and thus makes space heating and domestic hot water heating possible in the first place.
Exergy, the proportion of energy that determines whether heat is usable, must be given greater focus. After all, exergy optimization is the key to system efficiency.
If the different temperature ranges of a well-stratified water storage tank are completely mixed, the water ends up with a uniform average temperature.
The energy content of the storage tank remains unchanged. During this process, the hot water transfers its heat to the colder water. This means that the exergy that existed at the higher temperature level compared to the average temperature and was required, for example, for
which would be necessary to heat drinking water, has disappeared, irretrievably, irreversibly. Exergy has become anergy. Anergy is energy that can no longer be used (without a new supply of energy). Only by using auxiliary means (e.g. electricity) can it be used again.
exergy arise.
In contrast to energy, exergy can therefore be reduced or even completely destroyed.
The varmeco fresh water technology uses instantaneous water heaters to heat domestic hot water only when required, eliminating the need to store it in a domestic hot water tank and inhibiting the growth of germs (e.g. legionella). The integrated VarCon211 controller only activates the charging pump when drinking water is required, which saves energy and ensures hygiene at the same time.
Thanks to the separation of heating and domestic hot water and adaptive control, the system adapts optimally to daily requirements. The circulation pump control keeps the domestic hot water at the right temperature and prevents the proliferation of legionella bacteria, ensuring a high level of hot water comfort and safety.
The eXergiemaschine recycles waste heat that escapes unused in many businesses and turns it into usable heat. It raises the temperature of the waste heat to a usable level and simultaneously cools the lower part of the heat storage tank, which improves the efficiency of the heat sources. This efficient use saves energy and is easy on both the wallet and the environment.
The eXergiemaschine is a special heat pump that enables high source temperatures and a wide temperature spread. This makes it an ideal partner for renewable energy systems, such as solar thermal and hybrid modules, which work more efficiently and supply more energy.
Questions? With pleasure!
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