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VELUX®

Solar collectors on roof

Current forms of energy production are undergoing significant changes as a result of the scarcity of traditional fuels (coal and oil) on a global scale. Added to this is the production of greenhouse gases against which the struggle has become a recognized imperative. The sun is an efficient source of energy that respects the environment. The energy it provides is free, sustainable (without renewal conditions), safe and its production generates no gas or residue. The company VELUX whose experience in roof windows is unanimously recognized, has used its know-how in the field to offer solar roof collectors, perfectly integrable with its roof windows with which they can be assembled, thus bringing together elegance and performance.

Solar collectors on roof: solar

Steps

  1. Solar thermal collectors
  2. Solar balloons

Solar thermal collectors

Define your water consumption

Define your water consumption

The VELUX solar thermal collectors allow, by modulation of several panels, to obtain the optimal capture surface desired for heating the sanitary water of the house. It is necessary to provide 1 m2 catchment area per person for a water consumption of 40 liters. This allows an installation with a suitable sensor surface to cover an average of up to 60% of the annual hot water consumption without additional expense.

Solar collectors on roof: roof

The possibilities of declination of the sealing connections of the VELUX roof windows according to the different regions (type and color of the roofing materials) are found in the company's offer for the benefit of the sensors. It even extends to dimensions and all materials that can be used for both types of realization.

Geographic map

Geographic map

The company VELUX proposes 2 types of sensors adapted to the different geographical zones by adapting them according to a realistic map of sunshine. Indeed, its CLI 4000 sensors have absorbers composed of a copper plate covered with a highly selective coating and an insulation of the mineral wool box while those referenced CLI 3000 and intended for areas with high solar radiation (part south of the map), have a flat absorber composed of an aluminum plate covered with a black paint.

Velux solar collector

Velux solar collector

The VELUX solar collector system is therefore composed of solar panels adapted according to the determined region and available in three dimensions (114 X 118 cm, 114 X 140 cm and 134 X 180 cm) for CLI 4000 and one dimension (134 X 160 cm ) for the CLI 3000. The external profiles are made of aluminum and the glass used is low iron content to allow more energy to pass. A thermal probe (reference ZPT 1000) is necessary. It must be placed in the last sensor of the circuit. Tapered fittings seal the hoses.

Installation of a solar collector

Installation of a solar collector

Solar collectors are installed in the same way as roof windows and can therefore be easily done by a roofer. In addition, the installation does not require any intervention on the frame. These sensors are installed using standard VELUX connections, their model being based only on the materials on the roof. Since January 1, 2006, the installation of solar collectors certified CSTBat or solar Keymark in main house (new or renovation) allows to benefit from 50% tax credit (equipment out of labor).

Solar balloons

Solar balloon

Solar balloon

VELUX also offers a global offer, integrating all sensors and the balloon to meet the expectations of consumers in terms of comfort and economy in the home. The VELUX solar collector + balloon system adapts to all types of boilers as well as to electrical installations simply by adding a resistor. The VELUX solar bank offers the advantage of being fully equipped (expansion vessel, mixer, glycol and solar station) and of being very easy to implement (the already assembled solar station connects directly to the balloon ). As for the VELUX sensors, they obviously remain compatible with most solar balloons available on the market.

Solar balloon system

Solar balloon system

To respond specifically to the requirements of the new single-family home, VELUX has partnered with ATLANTIC, the hot water specialist, to offer a solar system combining quality integration on all roofs and technological performance at the best ratio price quality. The CLI 4000 VELUX solar collectors are easily coupled to the Solerio Optimum V ATLANTIC solar storage tank for the Hollow Hours electrosolar version (for an all-electric house - diagram opposite) or to the hydro-solar version (for a house with gas central heating). or fuel oil). Perfectly sized, this solar system covers up to 60% of annual domestic hot water needs.

Solar hot water production system

Solar hot water production system

The operation of the global solar hot water system is extremely simple:
- The pump starts when the temperature in the sensor is substantially higher than that of the storage tank (balloon);
- By means of the heat transfer fluid, the heat thus extracted from the sensor circuit is transmitted to the water storage tank which then begins to heat up;
- The pump stops when the temperature of the water storage tank reaches substantially that of the sensor.

Prototype habitat low energy consumption

Prototype habitat low energy consumption

This experimental prototype of energy-efficient habitat, called ATIKA, comes from the fundamental research that the VELUX group is conducting at European level on sustainable housing. Thanks to a concoction and design identical to the roof windows, the solar collectors achieve a harmonious integration with the roofing materials.

(photos / visuals: © Velux, except special mention)

VELUX®

VELUX®
Specialist in the entry of light through the roof, the VELUX brand markets a wide variety of roof windows, solutions for flat roofs, natural light pipes and their equipment.

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