OLYMPIC SUN has operated with alternative energies since 1978. We specialize in solar, thermal, photovoltaic and wind energy. We have developed our trading network throughout Greece and have also operated in some African and European countries.

We manufacture and/or market:

SOLAR ENERGY:

We manufacture high performance solar thermal collectors for hot water and heating.

Solar hot water thermosiphon systems (open and closed loop);

large capacity hot water boilers;

electric water heaters; and

solar systems for swimming pools.

PHOTOVOLTAIC SOLAR ENERGY:

Mono and polycrystalline solar photovoltaic modules for electricity between 10 and 80 Watts.

Accessories for Photovoltaic systems.

WIND ENERGY:

Wind generators for electricity between 300 and 800 KW, for power, pumping, solar/wind systems.

With 20 years of experience and over 7,000 systems, we are proud of the fact that no insurance claim has ever been brought against us.

OLYMPIC ENGINEERING involves the installation of electromechanical systems in large buildings, hotels and other technical works both within the public and private sectors in Greece. Our latest ventures have been in the implementation of computerized Energy Management Systems in large buildings.

Since 1992 our two companies under co-operative management have been endeavouring to make continual technical improvements on our products, providing improved services, consistent business relations and prompt delivery to our customers. A full consultation service is also provided.

• · External casing with stainless steel AISI 304 L, Thickness 0,5 mm.
• Storage tank with galvanized steel UST 37.2, Thickness 3 mm. Additional corrosion protection with Enamel coating according to DIN 4753 Teil 3 .
• Double wall heat exchanger for the closed circuit made of galvanized steel UST 37.2, Thickness 2,5 mm.
• Boiler insulation from polyurethane, Thickness 70 mm, Density 40 Kg/m3.
• Magnesium anode Φ 22χ35 cm for cathodic protection according to DIN 4753 Teil 6. (6)
• Electric resistance 4000 Watt according to DIN 44875. (7)
• Thermostat of bipolar safety.
• Hot water inlet from solar panel (5)
• Hot water to consumpion (2)
• Cold water inlet and Relief valve 10 bar (1)
• Water outlet toward solar panel (3)
• Expansion vessel for the closed circuit (9)
• Safety valve 3 bar for the closed circuit (10)

TECHNICAL CHARACTERISTICS OF THE COLLECTOR (selective)

1) Absorber plate: Copper fins ultrasonically welded to copper risers provide excellent heat transfer between the fins and risers. The absorber plate is coated with black chrome ( MTI ) producing a superior selective surface highly efficient for solar use. Absorbability = 0.95, emissivity = 0.12
2) Tubing Grid: 10 mm copper risers brazed to 22 mm manifolds with an optimal flow distribution.
3) Solar glass glazing: 4 mm TEMPERED LOW IRON oxide content (0.03%) glass with solar transmittance of 91% with rubber support to ensure insulation and shock resistance ( elastic-Sealant, EPDM / Silicone ) and top cover with aluzinc.
4) Insulation: Fibber glass insulation 50 mm thickness
5) Frame: Collector frame from Aluzink 0.5 mm and aditionaly coated with special electrostatic Aluminium powder for maximum absorbency

The panels are tested by the Greek National Institute for solar energy systems ‘’Democritos’’ and according to the ISO 9806-1 and 2 standard for the thermal performance of the collectors.

The company is already under the procedure of the certification by the Greek National Institute for solar energy systems ‘’Democritos’’ and according to the ISO 9001:2000 &Solar KeyMark

 

  Firstly estimate your hot water demand in litres per day (use the chart below for an average figure). It vary widely according to lifestyle (from 37 to 110 litres or more per person) and according to season (most people take longer and hotter showers during winter). In the case of small families living in a large house, the number of bedrooms should be considered in sizing a solar water heater. A system sized to meet the needs of two people in a five bedroom house today will most likely be inadequate for a family of five living in the same house tomorrow.
 

People	Litres	Bedrooms	Litres
1	75	1	113
2	151	2	189
3	207	3	264
4	264	4	340
5	320	5	415

    Note: add 55 litres per additional person or 75 litres per additional room.

    Next, choose a system from the following chart based on the gallons required. Note that multiple units may be combined to achieve the total gallons desired.
 

Model	OLSUN-120	OLSUN-150	OLSUN-200
Average output    (Litres)	227	264	378

SAVINGS & RETURN ON INVESTMENT

An average family of four uses 260 litres of hot water per day or 9.67 Kw / day or 3.529 Kw / year.
With an electric heater coefficient of 0,9 that makes 3.921 Kw / year  at a cost of 117.630 GRD per year*.
The typical Solar Water Heater will save 80% of the heating costs, or 345 EURO per year.

A typical heater of this size (OLSUN-150) with hardware will cost 734 EURO ( average with installation 822 EURO ).

The tax-free return on this investment would be 37,64% ROI ( 94.104 GRD / 734 EURO )
with installation 33,6% ROI ( 345 EURO / 822 EURO )
 
Calculate your own Tax-Free Return On Investment (ROI):

   Estimated Savings _________ divided by Unit Cost __________ equals __________% ROI

*Based on an electric rate of 0.09 EURO per kilowatt plus standby heat loss from a new electric water heater. As the age of the tank increases, the cost of operation increases. Your savings may vary based on your usage, temperature, climate and electric rate.