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2.4. Case studies
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Case study 1. Zero Energy Hotels (neZEH)
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efficiency and increase the use of renewable sources of energy. neZEH hotels can act
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as an example in this field, as they reach very high energy efficiency. They cover a
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energy produced on site or in the nearest area. This allows significant (up to 70 percent)
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reduction of energy consumption. One of these hotels is the Best Western Hotel Ajaccio
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Amiraute in France [15].
Hotel description
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Best Western Hotel Ajaccio Amiraute is a four star hotel with a 4-storey building and 68
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conference halls, reception, business lounge, restaurant and snacks available 24 hours
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a day. It is located in a convenient area, with a harbour view, close to the sea, city
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centre and airport. From the beginning of its operation it has been assumed that the
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environmental impact of the hotel should be as small as possible. In 2013, this hotel
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is emphasised (e.g. in hotel brochures), it saves energy and natural resources and also
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prevents climate changes [13,14].
p r e v e n t s c l i m a t e c h a n g e s [ 1 3 , 1 4 ] .
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Taking actions to improve energy efficiency of the hotel was a continuation of its
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energy audit. As a result, environmental issues have been identified and analysed, and
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possible corrective actions have been proposed. The actions implemented by the hotel
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· Installation of balancing valves within the heating system.
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· Installation of a balancing valve within the domestic hot water system,
· External insulation.
· Wall insulation in unheated corridorsinsulation in unheated corridors.
Replacement of inefficient lighting with LED systems.
· R e p l a c e m e n t o f i n e f f i c i e n t l i g h t i n g w i t h L E D s y s t e m s
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Replacement of old glazing with 4/16/4 glasses with solar control.
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· Installation a double-flow HVAC system with a heat exchanger.
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· I Installation of a solar thermal system and a heat recovery equipment within the
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· I Installation of a Building Energy Management System.
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· I Installation of pressure control valves on taps and showers.
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· Staff training.
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· Encouraging hotel guests to change their behaviour, e.g. by issuing leaflets
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describing the actions taken to improve hotel energy efficiency and containing
d d e s s c r r i i b i i n g t t h e a c t t i i o n s s t t a k e n t t o i i m p r r o v e h o t t e l l e n e r r g y e f f f f i i c i i e n c y a n d c o n t t a i i n i i n g
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g u i d e l i n e s t h a t t e l l t h e m w h a t t h e y c a n d o .
guidelines that tell them what they can do.
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