Polish economy is characterised by high energy intensity in all sectors. Energy used for heating purposes for municipal and co-operatives buildings is especially high. A lot must be done to reduce energy consumption. This paper presents energy conservation technologies that have started to be...

This paper presents a study on the utilization of ocean thermal energy in Dalian. Coastal areas are ideal sites for the application of seawater-source heat pump technology (SWHP) to provide district cooling and heating. The technical requirements and the scheme design in the context of marine...

Fostering the use of renewable energies for power generation is at the heart of the EU's long term energy policy. Accordingly, the European Commission and literally all member states have set up ambitious installations targets for alternative energy sources. These aims can only be reached by...

Using a panel database for 27 programs in 16 U.S. states over 1998–2009, we assess the impact of 12 state-level policies on the cost and deployment of solar photovoltaic (PV) technologies for two sectors defined by system sizes: residential (10 kW) and commercial (10−100 kW). We first...

This paper contributes to the debate on the competitiveness and maturity of wind technology by carrying out an analysis on research investments and sales of a panel of 10 wind manufacturers over the period 2002–2011, examining the extent to which public and private funding affect the...

Direct utilization of geothermal energy consists of various forms for heating and cooling instead of converting the energy for electric power generation. The major areas of direct utilization are (1) swimming, bathing and balneology, (2) space heating and cooling including district heating, (3)...

Market penetration of renewable energy sources, such as geothermal energy, could be promoted even by small cost reductions, achieved through improved development design. This paper deals with optimization of the exploitation system of a low enthalpy geothermal aquifer, by means of the method of...

One of the most commonly used heating devices in geothermal systems is the heat exchanger. The output conditions of heat exchangers are based on several parameters. The heat transfer area is one of the most important parameters for heat exchangers in terms of economics. Although there are a lot...

In this study energy, exergy and exergoeconomic analysis of the Afyon geothermal district heating system (AGDHS) in Afyon, Turkey is performed through thermodynamic performances and thermo-economic assessments. In the analysis, actual system data are used to assess the district heating system...

Biomass-fueled Organic Rankine Cycle power plants in a cogeneration topping layout have been operated in Central Europe since 2000. These plants are usually integrated into a district heating system and located near to the villages whose thermal and electric energy demands are to be covered. In...