id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
american_scientific_journal-4788	Vourdoubas, John	Possibilities of Using Hybrid Solar PV/T Systems and Other Solar Energy Technologies in Hotels in the Mediterranean Region	2019	11	.pdf	application/pdf	5622	284	44	Parabolic or concentrated collectors and panels have higher efficiencies than flat plate collectors while the efficiency of solar thermal cooling can be increased significantly if a multi- stage system is used or if the temperature of the hot fluid is higher than 70oC. Table 1: Possibility of using solar energy technologies in summer-operating hotels in the Mediterranean region Sector demanding energy in the hotel Main energy sources/fuels currently used Solar energy technologies which could be used -Space cooling -Domestic hot water Grid electricity Diesel oil and solar thermal energy 1.Solar thermal cooling 2.Solar-PV powered heat pumps 1.Solar thermal 2.Hybrid solar PV/T -Lighting -Operation of various electric devices Grid electricity Grid electricity 3.Solar-PV powered heat pumps 1.Solar-PV 2.Hybrid solar PV/T 1.Solar-PV 2.Hybrid solar PV/T Table 2: Typical energy efficiencies in various solar energy systems and low carbon technology systems1 Technology Energy efficiency -electric Energy efficiency - heat/cooling Energy efficiency - overall 1.Solar-PV 15% 2.Solar thermal for domestic hot water production at 60-70oC with flat plate collectors 50% 3.Solar thermal cooling, single-stage systems with hot water at 70o 4.Hybrid solar PV/T 5.High efficiency heat pumps 10% 40% 40% 350% 50% 1 Source: average values in published literature 4. Discussion Combined use of various solar energy systems could cover all the energy requirements, including electricity, heat and cooling, in hotels in the Mediterranean region.	cache/american_scientific_journal-4788.pdf	txt/american_scientific_journal-4788.txt