Down‐Hole Heat Exchangers: Modelling of a Low‐Enthalpy Geothermal System for District Heating

Abstract

In order to face the growing energy demands, renewable energy sources can provide an alternative to fossil fuels. Thus, low-enthalpy geothermal plants may play a fundamental role in those areas—such as the Province of Viterbo—where shallow groundwater basins occur and conventional geothermal plants cannot be developed. This may lead to being fuelled by locally available sources. The aim of the present paper is to exploit the heat coming from a low-enthalpy geothermal system. The experimental plant consists in a down-hole heat exchanger for civil purposes and can supply thermal needs by district heating. An implementation in MATLAB environment is provided in order to develop a mathematical model. As a consequence, the amount of withdrawable heat can be successfully calculated.

Insights into Congestion Costs and Financial Risk Management: The Electricity Market

“…The implementation of the power grid and a wider spreading of the offer, also related to renewable energy sources 26,27,28,24,29,6,15,30 , has evidenced new criticalities, so that a new reorganization, that would seriously consider such constraints, is now necessary.…”

DEA (data envelopment analysis)-assisted supporting measures for ground coupled heat pumps implementing in Italy: A case study

“…It depends on climatic conditions and on HDD (Heat Degree Days). This later notion is defined relatively to the outside temperature above which a building does not need heating and is calculated as [15]:…”

Economical Assessment of Large-Scale Photovoltaic Plants: An Italian Case Study

“…It is important to underline that the registry is held by GSE [14]. Table 3 shows the tariffs for PV plants commissioned in 2012: it is extremely clear in figure 7 that the incentives decrease as the nominal power grow and passing from the first to the second semester of the year.…”