Power to heat
tubra®-eTherm are hydraulic units
with integrated control for thermal storage of
photovoltaic electricity to optimize self-consumption
Solar pump groups tubra®-PGS and
Solar transfer stations tubra®-ÜSTA for collector arrays from 4 m² to 260 m²
PGS: The pump group for solar systems – also with integrated control system
ÜSTA S/M: The solar transfer station for stratified loading
ÜSTA L/XL: The pump groups for large solar systems
ÜSTA S/M: The solar transfer station for stratified loading
ÜSTA L/XL: The pump groups for large solar systems
tuxhorn
The use of solar energy for thermal applications can be realized by two very different technologies.
tubra®-eTherm
Intelligent thermal storage for photovoltaic electricity
The tubra®-eTherm is an innovative hydraulic unit with integrated control that converts excess solar power into heat and thus optimizes self-consumption in the household.
It stores the self-generated energy in buffer storage units that offer significantly higher capacities than battery storage units. This enables particularly efficient use of renewable energy and at the same time helps to reduce the consumption of fossil fuels.
Main features of the tubra®-eTherm:
- Easy to retrofit for buffer storage tanks or domestic hot water tanks with integrated heating coil
- The control system automatically adjusts the heating output to the photovoltaic surplus
- Recommended from a PV system output of 4 kWp
- Installed before the electricity meter to ensure priority for household electricity
- no required minimum terms or minimum benefits
- CE-compliant with regard to EMC and safety
Advantages of tubra®-eTherm:
- Simple retrofitting with existing heating hydraulics
- Constant charging temperature of 70°C creates stratified charging with utilization of the entire storage capacity and immediately usable heat
- Energy storage in buffer storage systems with significantly higher storage capacities and lower investment costs compared to battery storage systems
- The use of excess PV for hot water and heating increases the self-consumption of self-generated electricity and thus more independence
- No minimum running times or minimum performance required to start
- Saving fossil fuels.
- Reduction of the start cycles of the primary heat generator (boiler or heat pump)
- Immediately usable heat thanks to fast response times
- Cascading of several eTherm stations possible for more heating power
Product group Power to Heat
System-independent station incl. measurement and power electronics for the stratified loading of buffer storage tanks
Universally combinable station incl. power electronics from my-PV for the stratified loading of buffer storage tanks
Base station for external energy managers and external power control for stratified loading of buffer storage tanks
System-independent energy manager and power electronics for connecting electric heating elements in storage systems
Download area
System-independent station incl. measurement and power electronics for the stratified loading of buffer storage tanks
Universally combinable station incl. power electronics from my-PV for the stratified loading of buffer storage tanks
Base station for external energy managers and external power control for stratified loading of buffer storage tanks
Rated output:
P3+ 0-3 kW stepless
P9+ 0-9 kW stepless
P3+ 0-3 kW stepless
P9+ 0-9 kW stepless
Nominal power:
0-9 kW stepless
0-9 kW stepless
Rated output:
C3+ 3 kW
C9+ 9 kW
C3+ 3 kW
C9+ 9 kW
Staggered charging of the storage tank thanks to electronic charging temperature control
Measuring device and power electronics included
Integrated power electronics with various communication interfaces. communication interfaces. Compatible with many energy management systems
External energy management system
required
required
Stand-alone station for the direct connection of PV modules for the stratified charging of buffer storage tanks
System-independent energy manager and power electronics for connecting electric heating elements in storage systems
Nominal output:
0-3.6 kW
depending on module output
0-3.6 kW
depending on module output
Rated output:
S3 0-3 kW
S9 0-9 kW
S3 0-3 kW
S9 0-9 kW
Staggered charging of the storage tank thanks to electronic charging temperature control
No memory stratification
One MPPT; reheating via AC possible
Measuring device and power electronics included
The tubra®-eTherm product group
tubra®-eTherm P – The compact independent hydraulic unit
- with integrated power measurement, power control and storage charging management
- Completely system-independent of the inverter and electricity meter
- With integrated control and up to 9 kW output (expandable to 36 kW)
- Smart Remote and 0-10V interface for external control
- Stratified storage tank charging with 70°C charging temperature
tubra®-eTherm P3+
- Built-in heating element:
– 3 kW output - Recommended storage tank volume:
– Ideally suited for buffer storage tanks or drinking water storage tanks with registers from approx. 500 L - Recommended output of the PV system:
– from approx. 4 kWp
tubra®-eTherm P9+
- Built-in heating element:
– 9 kW output - Recommended storage tank volume:
– Ideally suited for buffer storage tanks or drinking water storage tanks with registers from approx. 800 L - Recommended output of the PV system:
– from approx. 10 kWp
tubra®-eTherm AC-THOR 9s – Including power electronics from my-PV,
universally combinable
- with integrated my-PV AC-THOR 9s as power electronics for flexible combination with many other energy management products
- Open system with ModBus TCP, API and http for inverter, battery storage and smart meter manufacturers as well as home energy management systems.
- Can be used for flexible electricity tariffs
- Completely pre-wired with 9 kW heating element, 3 sensors, pressure switch and
PWM-controlled charging pump - Ready to plug in – plug and play with 5-pin mains plug & RJ45
tubra®-eTherm AC•THOR 9s
- Built-in heating element:
– 9 kW output - Recommended storage tank volume:
– Ideally suited for buffer storage tanks or drinking water storage tanks with registers from approx. 800 L - Recommended output of the PV system:
– from approx. 10 kWp
tubra®-eTherm C – The eTherm in combination with external energy managers
- Power measurement and control by an external energy manager
- Control of the heating element can be modulating or switched depending on the energy manager
- Ideal for buffer storage tanks or drinking water storage tanks with registers from approx. 500 liters, with integrated
control and up to 9 kW output (expandable to 36 kW) - Stratified storage tank charging with 70°C charging temperature
tubra®-eTherm C3+
- Built-in heating element:
– 3 kW output - Recommended storage tank volume:
– Ideally suited for buffer storage tanks or drinking water storage tanks with registers from approx. 500 L - Recommended output of the PV system:
– from approx. 4 kWp - External energy manager:
– compatible energy management system required
tubra®-eTherm C9+
- Built-in heating element:
– 9 kW output - Recommended storage tank volume:
– Ideally suited for buffer storage tanks or drinking water storage tanks with registers from approx. 800 L - Recommended output of the PV system:
– from approx. 10 kWp - External energy manager:
– compatible energy management system required
tubra®-eTherm S – The eTherm for the electric immersion heater
- with integrated power measurement and power control
- Completely system-independent of the inverter and electricity meter
- Ideal for retrofitting to existing storage tanks with 6/4″ socket
- Fast power modulation of an electric immersion heater, 0-3kW or 0-9kW
tubra®-eTherm S3
- Heating element:
– 3 kW output - Recommended cylinder volume:
– Ideally suited for buffer cylinders or hot water cylinders with 6/4″ sockets from approx. 200 L - Recommended output of the PV system:
– from approx. 4 kWp
tubra®-eTherm S9
- Heating element:
– 9 kW output - Recommended cylinder volume:
– Ideally suited for buffer cylinders or hot water cylinders with 6/4″ sockets from approx. 400 L - Recommended output of the PV system:
– from approx. 10 kWp
Product group Power to Heat
Product group Power to Heat
