BEST PRACTICES OF TOURIST ACCOMODATIONS IN CRETE AND IN GREECE USING RENEWABLE ENERGY SOURCES

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1 The Incubator of New Enterprises of Chania (INEC) BEST PRACTICES OF TOURIST ACCOMODATIONS IN CRETE AND IN GREECE USING RENEWABLE ENERGY SOURCES Solar Energy Solid Biomass Geothermal Energy SLOVENIA MARCH Vourdoubas John Papanikolaou Joanna

2 Summary Renewable energy sources find various applications in buildings for power generation and for heat and cool production. Currently in Greece solar energy is used for power generation and for heat and cool production. Solid biomass is used for heat production and geothermal energy for heat production. The present work concerns various good examples of hotels and tourist accommodations in Crete and in Greece which are using the abovementioned RES for covering part of their energy needs. The most of them are in Crete and low enthalpy geothermal energy is used from a hotel in the region of thrace for heat production.

3 The following hotels are presented: ATRION [SOLID BIOMASS FOR HEATING] ELOYNDA [PHOTOVOLTAICS] MILIA [SOLID BIOMASS AND PHOTOVOLTAICS] LOUTRA TRAIANOUPOLIS [GEOTHERMAL ENERGY FOR HEATING] LENTZAKI [SOLAR COOLING] RETHYMNO VILLAGE [SOLAR COOLING] CANDIA MARIS [SOLAR THERMAL HEATING] Apart from that, the fried vegetable oils from the restaurants of various hotels in Crete are collected and used as raw materials for the production of biodiesel. The collected used vegetable oils are sent from Crete to Continental Greece, where the processing plants are operating.

4 Locations of the hotels (best practices) in Greece LOUTRA TRAIANOUPOLIS HOTEL HOTELS LENTZAKIS, RETHIMNON VILLAGE HOTEL EL GRECO HOTELS ATRION,CANDIA MARIS HOTEL MILIA HOTEL ELOYNDA

5 HOTEL ATRION IN HERAKLION-CRETE Hotel details Description of technology Name of Hotel : ATRION Location : HERAKLION- CRETE Class : C Client Activity : Tourism Geography : Urban Area Operational Season : All Year Occupied area : 2000m2 Number of beds : 117 Staff numbers : 30 Atrion Hotel uses two hot water boilers, which are burning olive husks. The boilers produce hot water at 95oC. The two boilers are connected in series and the hot water that is produced, is heating, through a serpentine, the water, which in contained into two water tanks of 3000 lt each. The produced hot water circulates by a circulating pump into a closed circuit and through the serpentines of the two water tanks and keeps the water temperature in the tanks over 60oC. If the temperature of the water in the tanks drops below 60oC then the circulating pump starts and if the closed circuit water temperature drops below 75oC starts the biomass feeding screw and the combustion begins in the boiler s hearth.

6 PHOTOS Picture 1: Hotel ATRION- Combustion of biomass (Heraklion-Crete)

7 TOURIST ACCOMODATION IN ELOUNDA Hotels details Name of Hotel : Elounda- Crete Location : CRETE Class : C Client Activity : Tourism Geography : Rural Area Operational Season : All year Number of beds : 60 Description of technology The photovoltaic system at Elounda, at the north coast of Crete, was the first autonomous PV installation in Greece for the electrification of a tourist resort. The tourist facility was established in 1978 in Crete and the bungalow complex consists of 12 individual villas and one restaurant. Bioclimatic design of the buildings was undertaken and, in the way, summer interior comfort and energy saving were achieved.

8 PHOTOS Picture 2: Hotel at Elounda South Crete. Photovoltaic system

9 CREATION OF PLANTED ROOF IN THE HOTEL EL GRECO IN RETHYMNO A planted roof has been created in the hotel EL GRECO in Rethymno in an area of 1160 M2. The hotel operation is seasonal and during April practically the heating needs are zero. During the summer months the planted roof lowers the cooling needs of the hotel.

10 PHOTO OF THE PLANTED ROOF IN THE HOTEL EL GRECO

11 MILIA ACCOMODATION IN CHANIA Hotels details Description of technology Name : Milia Milia is consisted of an isolated renovated village neighborhood which was abandoned Location : Chania approximately 100 years ago. The old houses Prefecture were refabricated and the visitors live in an Activity : old way of village life. Space heating is Agrotourism provided with fire places feeded with local Geography : Rural wood. Electricity is produced from Area photovoltaics and a small diesel engine. For Operation : All cooking and for hot water production LPG is Year used. The accommodation is isolated and it is not interconnected with the electricity grid. Capacity : 13 The electricity consumption in the houses-studios accommodation is very low and candles are also used for lighting, so the visitors have a sense of the old way of life, in a traditional Cretan village.

12 PHOTOS Picture 3: Rural Lodgings in Milia (Chania-Crete)

13 LOUTRA TRAIANOUPOLIS HOTEL Hotels details Name of hotel : Intermunicipal company of Loutra Traianoupolis Alexandroupolis (D.E.L.T.A.) Location : Loutra Trainoupolis, Alexandroupolis [Region of Thrace] Class : C Client Activity : Tourism, Spa bathing Geography : Rural area, plains near the delta of Evros river Operational Season : All year Occupied Area : 4,5 ha Number of beds : 120 in 44 rooms in 4 buildings Staff numbers : 30 Description of technology This hotel uses the heat energy of a low enthalpy geothermal field to produce heat covering its own needs. An under floor heating system utilizes the warm water to heat the various rooms of the hotel. Heating/cooling needs : 1.050KW Description of technology : Geothermal circuit : production of 520C mineral water from a geothermal well, heats a closed loop water through a heat exchanger and reinjection at 370C, plate heat exchanger (estimated

14 PHOTOS Picture 4: Loutra Traianoupolis Hotel

15 HOTEL LENTGAKI IN RETHYMNON Hotels details Name : Lentzakis Location : Rethymno Activity : Apartments Geography : Urban area Operation : All year Capacity : 23 appartments Description of technology Lentzakis hotel has a capacity of 150 beds and it is occupied 100% in the summer and 45% in the winter. The solar cooling system has a power of 105 KW and hot water is produced with 450m2 flat plate collectors placed on the roof of the building. During the summer, cool is produced with an absorbtion cooling system and during the winter heat for space heating and for hot water production.

16 PHOTOS Picture 5: Establishments of solar cooling system

17 RETHYMNON VILLAGE Hotel details Name : Rethymnon Village Location : Rethymno Activity : Apartments Geography : Urban area Description of technology The hotel has a capacity of 260 beds. The solar cooling system has a power of 105 KW(water s temperature oc) and hot water is produced with 450m2 flat plate collectors placed on the roof of the building. The solar cooler uses the hot water like a source of energy and the water (instead of Freon or Ammonia) like coolant resource to produce cold water (water s temperature 8-10oC). The technology is simple and it is based on the process of condensation and vaporization of the coolant resource (the water) under vacuity.

18 PHOTOS Picture 6: Establishments of solar cooling system

19 HOTEL CANDIA MARIS IN HERAKLION-CRETE Hotel details Name of the hotel : CANDIA MARIS Location : Heraklion Crete Class : A Activity : Tourism Geography : Urban Area Operation : All Year Number of beds : 257 rooms Description of technology This large hotel complex has installed a very large solar thermal field with flat collectors, producing heat all over the year and covering the most of the heating needs of the resort. Apart from that, the hotel is using EMS to optimize its energy utilization.

20 PHOTOS Picture 7: Hotel Candia Maris- View of Solar heating system and general view of the hotel

21 USE OF FRIED VEGETABLE OILS AS RAW MATERIALS FOR BIODIESEL PRODUCTION The fried vegetable oils from restaurants of various hotels are picked up, stored and sent to various plants in Continental Greece where they are co-processed with various vegetable oils for biodiesel production. Currently there are few biodiesel producing plants in Greece but non of them is located in Crete.

22 THANKS YOU FOR YOUR KIND ATTENTION