The Palmyra Beach Hotel is located on the Attica Coast near Athens. It functions both as a city hotel and as a holiday hotel. Because the hotel is nearly fully booked throughout the year, energy is consumed all year round – in summer for cooling and in winter for heating.
Hot water is needed throughout the year mainly between 7 and 11 a.m. Since the hotel’s construction in 1979, fuel oil was used to meet the demand of hot water. In the last years, about 1,500-1,700 liters of fuel oil were burned each year for the hot water supply. Energy Scout Stefanos Vassilakis thought up a more efficient and cleaner option – and proposed a modernization.
Condensing Boiler Technology instead of oil burner
The idea to install solar thermal collectors proved unfeasible. The roof area was not big enough in the first place and secondly, the installation would have needed costly engineering work for reinforcing the existing roof.
The next best option was to replace the old fuel oil boiler with a modern and efficient natural gas boiler with condensing technology. The cost savings are approximately 1,000-1,300 € per month, therefore the 30.000 € investment pays off in 2.5 years. At the same time the CO2 emissions will be reduced by approximately 22 tons per year.
The numbers impressed the management, so they let their Energy Scout also exchange an electric tumble dryer in the hotel’s laundry with a natural gas-powered version. An additional 4,000 € per year will be saved here which will already pay off in roughly one year.