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The paper presents the adaptation of the modified pulse method for investigating temperature characteristics of thermal diffusivity in the vicinity of the second-order phase transition points. The principle of the adaptation consists in the modified in relation to the original method, development of the characteristics of temperature changes between boundary surfaces of a flat-parallel specimen after the laser shot onto its front surface. The application of this adaptation was illustrated with investigation into thermal diffusivity of nickel (99.9% wt) in the temperature range of 20-380◦C. In all cases the measurement error was less than 3%, and the averaging interval for the measured values of thermal diffusivity was not greater than 1.2 K.

a b s t r a c tThe aim of the installation of photovoltaic panels in the object of the Water Park was to use the possibility of supporting the production of electricity using solar energy. The article shows the adopted technological solution installation of photovoltaic and presents the results of the analysis of plant performance in real conditions, not just computational theory. The analysis of the installation work was performed on the basis of monitoring of operating parameters conducted in 2012e2013. The use of photovoltaic helped reduce CO 2 , SO 2 , NO x and dust emissions into the atmosphere on the value of installed power and reduce the amount of electricity drawn from the network (In Poland still based on coal and lignite).The results of energy and environmental analysis show the validity of installation of photovoltaic in objects like Water Parks.Energy and environmental effects combine necessarily the economic effects. It also helps to promote the local market to other forms of energy generation as well as improves the energy security of the Warmia and Mazury province, as well as part of the European Climate Change Programme (ECCP), which has lead to coordination of activities towards the reduction of greenhouse gas emissions.

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