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This paper reports the evaluation of pump's efficiencies and its optimization potential, in three water supply systems. The study surveyed 65 pumps groups, from 24 pumping stations, between 5 to 350 kW of absorbed power, with flow rates from 25 to 1500 m3/h. The performance of the pumps, was assessed by testing each pump group in different operational conditions. It was quantified, for each pump group, the specific consumption (kWh/m3) and cost (€/m3) as well as the difference between the optimum efficiency point, for the specific net head of each installation, and their actual operating point. The identified energy inefficiencies and proposed corrective measures for each pump group were compiled in order to improve their efficiency. Most problems identified are oversized groups, valve problems and inadequate operational working points. On average the surveyed pump's efficiencies were 10 percentage points below their reference values. In order to reduce the gap several improvement measures were proposed, such as the refurbishment of the pumps, impeller adjustments, variable speed drive installation and the extension of the working periods with lower frequency regimes, where high efficiencies were identified. The implementation of these improvement measures has an energy saving potential of 331 MWh/year, which means 27.000 €/year.

Hotels are buildings with major specific energy and water demands per occupant, due to high levels of services and comfort provided and expectation from tourists, meaning that they could be one of the building types more vulnerable to changes in climate. Usually high occupancy rates of hotels happen in summer, for beach and city hotels, increasing the vulnerability to climate change. Projected changes in mean and extreme temperature and precipitation over the Mediterranean region, in particular over mainland Portugal, will be likely to intensify the well-known asymmetries in the Portuguese climate, with more intense heat waves and with longer duration. This paper presents the methodology followed in project AdaPT AC:T to assess the vulnerability of hotels to climate change and the impact of some adaptation strategies.