| Object | Single-family house Erding |
| Client | Hesselmann family |
| Planner/Architect | Horst Dichtl, HVAC technician of Roth Werke GmbH |
| Heating contractor | Markus Klug Heizung & Sanitär, Auerbach 9, 85156 Wartenberg, Germany |
| Facts and figures | Roth Thermotank TQ-T 325 and TQ-TW 325, Roth ThermoAura 9 kW heat pump, Roth Original Tacker System |
| Year of installation of Roth products | 2017 |
| Roth Technical Advisor | Roth Technical Advisor Horst Dichtl |
He met the installer at a construction site for a single-family home in Erding - a KfW Efficiency House 55. The heated living space of the building is around 180 square metres with a heating load of around 7.8 kilowatts.
The Roth ThermoAura air/water heat pump with an output of nine kilowatts was used as the heat generator in the house. Energy storage is provided by two Roth Thermotanks Quadroline 325 litres - one of which is designed as a drinking water storage tank. A high-performance heat exchanger made of stainless steel is integrated into the hygiene storage tank to heat drinking water using the continuous flow principle. The second thermo tank is a separation tank. It is suitable for the hydraulic separation of the heat generator circuit and the heating circuit. The principle is based on the so-called hydraulic separator. Energy distribution is provided by radiant heating as a Roth Original Tacker System.
Convincing lightness
Since the market launch of the Roth thermal tanks, the Klug specialist company has been a loyal user of the modern Roth heat storage tanks. Markus Klug has tested the plastic storage tank in practice and is convinced: "The Roth Thermotank is extremely light, it weighs only about a third of a conventional comparable steel storage tank and simplifies transport and installation. This brings us installers absolute added value in everyday life."
Another advantage of the plastic composite material is that it is corrosion-free and thus low-maintenance, Markus Klug adds.
Variable in use
The Roth thermal tanks are available in 325, 500 and 850 litre sizes. They can be used in individual plant concepts. For example, they can be used as a central unit in heating applications, as a separating or buffer storage tank, as a solar and combination storage tank, and in domestic hot water heating. Roth Quadroline thermal tanks can be integrated directly into heating systems with a permanent maximum system operating pressure of up to three bar.
Compared to metallic storage materials, the energy balance of the thermal tank is significantly better, as the thermal insulation properties of the storage material are ideal. The innovative plastic composite material of the storage tank with integrated diffusion protection in combination with special EPS high-performance insulation enables efficient minimisation of heat losses. The Roth Thermotank Quadroline, for instance, received the energy label A in its version with the Roth Thermocoat plus.
Technology transfer: Roth Composite Technology
The pressure resistance of Roth heat tanks is achieved by the manufacturing process using Composite Filament Winding Technology. This technology is used for products that require high pressure and corrosion resistance combined with light weight. Composite pressure vessels are used to store media such as liquid gas, natural gas and hydrogen. Pressure applications go up to 800 bar. Composite products are used, for example, for water hygiene, as gas cylinders and tanks for the automotive and aerospace industries. Roth has been a market leader with its Composite Technology division since 1964.
