Solar heating

At Orkli we have developed the only integrated and 100% autonomous mechanical-circulation solar power system in the market It does not require electricity to operate, thus saving costs and energy. Furthermore, it is 100% sustainable because it does not release CO₂ into the atmosphere.

OKSOL is a compact system that incorporates the pump, the accumulator and the panel into a single block. Therefore, it does not take up home space, since it does not require space for the technical panel.

Why is OKSOL the best choice?

Renewable, accessible and inexhaustible energy

20 minutes of the sun's energy equals the world's energy consumption.

Independent of fuel use

Versatility of installation

Residential, commercial, industrial, flat or pitched roofs, new construction or renovation...

Easy maintenance

Space saving

High energy efficiency

High efficiency primary collector.
Technical tank with high quality insulation.
Technical tank with high quality insulation.
Power supply and control of the device via the photovoltaic panel.

Calculation of available solar coverage by means of CHEQ4 software

According to CTE, the minimum DHW flow rate is 0.10 l/s (6 l/min.).

Values to consider
Shower flow rate (l/min.)	6
Shower temperature (ºC)	40
AFS Temperature (ºC)	15

Further savings

It covers between 50% and 70% of domestic hot water needs.
It can reduce about 75% of a family's hot water bills.
You can power a washing machine or dishwasher with this hot water, which will allow you to reduce energy consumption, as these appliances consume a lot of energy when heating water. Washing cycles will also be shorter.

OKSOL installation savings study

LOCATION	MADRID 5-user dwelling	SEVILLE 6-user dwelling
Total energy consumption	2.791 kWh	3.167 kWh
Energy provided by OKSOL	1.664 kWh	1.929 kWh
Energy fraction covered by OKSOL	60%	61%
CO₂ not issued	590 kg.	689 kg.
Litres of water heated per day	350 l.	350 l.

Types of buildings

Residential

Single-family houses

Multi-family houses

Mobile homes

Bungalows

Prefabricated houses

Non residential

Shopping centres

Schools

Museums

Office buildings

Industrial spaces

Medical camp housing

Other buildings

OKSOL Smart

Integral and forced

100% renewable

Self-employed

Sustainable and zero-emission CO₂

Smart version with IOT and web application for user and installer

In an increasingly connected world, remote control, management and access to a system such as OKSOL is now a reality. The web application and mobile App, available to the installer and end user, provide information and data on the status and operation of the equipment. Tools created by ORKLI to facilitate and improve the performance of the OKSOL, leading to more efficient management of the device and greater economic and energy savings.

Advantages for the professional

Interactive map showing location and information of installed systems.
Remote access for the service.

Advantages for the end user

The application provides useful data (available DHW, energy savings).
IOT improves the efficiency of solar devices.

Optimisation keys of the new Oksol Smart

Security

Drain-back system, the best system for overheating & freezing protection.

Legionella prevention

Thanks to the instant hot water generation (Fresh Water Station System), hot water is not stored directly, but heated instantly, thus avoiding possible legionella problems.

IOT & App

Visualisation of real-time data from the system.
Management of preventive maintenance of the system, maintaining the performance and lifetime of the equipment.
User-friendly interface with the user, who will know at all times the energy produced and stored in his equipment, among other things.

Installation and maintenance

Installation as simple as a thermosiphonic system with the performance of a forced system.
It only needs the installation of the mains water pipe and the installation of the DHW pipe for the auxiliary system (heat pump, boiler, thermoelectric...).
Maintenance: the equipment is prepared to facilitate the maintenance of the equipment by facilitating the removal of its components, in addition to the IOT system alerting the professional of the actions to be carried out for maintenance, allowing the end user to have the Oksol equipment in the same condition as it was purchased throughout the useful life of the equipment.

Technical data

The only integrated, forced and autonomous solar system on the market, the new OKSOL Smart incorporates unique advantages for the user, making it the smartest solution for a more connected and sustainable world.

TECHNICAL DATA
ABSORBER TYPE: Aluminium + selective PVD	DIMENSIONS: 2.187x1.160x270 mm.
ABSORPTION SURFACE: 2.16 m²	WEIGHT: 95 kg.
ABSORPTIVITY: 95%	CONNECTIONS: Male threads G-1/2".
EMISSIVITY: 5%	DHW CHANGER: Stainless steel. AISI 316l
PRIMARY PUMP: Magnetic, brushless	ACCUMULATION VOLUME: 170 litres
PHOTOVOLTAIC PANEL: Polycrystalline silicon	SAFETY VALVE PRIMARY: 3 bar
IoT WITH COMMUNICATION (optional)	ELECTRICAL RESISTANCE (optional): 1,5 Kw

Applications

Heat pump

Oksol facilitates the integration of the solar thermal solution with the heat pump at all levels:

Installation: the outlet of the water heated by Oksol is installed in the cold water inlet of the heat pump tank, it is additionally recommended to install the solar sanitary kit. No additional components (expansion vessels, regulation, etc.) are required.
Performance: The interaction of Oksol improves the performance of the heat pump system as the heat pump runs fewer cycles, and the compressor runs at part load which is when the best COP ratios of the heat pump are obtained.
Electricity consumption: The production of DHW through the heat pump is the mode that requires more consumption because it is necessary to raise the mains water temperature (10-14º) to the DHW temperature (45-55º). As the Oksol heats the mains water directly, it needs less electricity to reach the desired DHW temperature, when the backup operation of the heat pump will be required.
Service life: thanks to Oksol, the heat pump will stop and start less often, extending the service life of the system, as it is in these situations that the heat pump suffers the most mechanically.

Applications

Residential: New construction & refurbishment
There is a very important improvement in the use of the interior space, both inside the dwelling and in the passage of facilities, with a special benefit in refurbishment.
It also highlights the ease of installation per home or centralised installation: only the equipment and a solar sanitary kit are required.
Tertiary: New construction & refurbishment
Thanks to the instantaneous heat exchanger heating system, the Oksol can work with pumping groups of up to 10 Bar, allowing it to be used in tertiary installations with high heights, such as hospitals, sports centres or office buildings. It is not necessary the systems that accompany solar thermal systems such as:
- Dissipation systems
- Regulation
- Hydraulic power packs: buffer tanks, expansion, pumping units...

Durability, autonomy, maximum efficiency and cost savings make OKSOL the future of solar energy.

Technology and innovation to guarantee increased efficiency in solar power systems

At Orkli we design and develop optimal components for use in hot water solar power systems with innovative technology.

An example of this is the fact that the pumping units do not retain water in the solar panel, preventing freezing or overheating. This increases the system's durability and effectiveness.