Abstract
Building sector still consumes 40% of total energy consumption. Therefore, an improved heating system with Solar Assisted Heat Pump (SAHP) was introduced in order to minimse the energy consumption of the fossil fuels and to lower the carbon dioxide emissions occurring from combustion. An energy analysis of the complex heating system for heating of buildings, consisting of solar collectors (SC), latent heat storage tank (LHS) and heat pump (HP) was performed. The analysis was made for the heating season within the time from October to March for different climatic conditions. These climatic conditions were defined using test reference years (TRY) for cities: Adana, Ljubljana, Rome and Stockholm. The energy analysis was performed using a mathematical model which allowed hourly dynamics calculation of losses and gains for a given system. In Adana, Rome and Ljubljana, it was found that the system could cover 80% of energy from the sun and the heat pump coefficient of performance (COP) reached 5.7. In Stockholm, the maximum COP of 5.12 was reached in March and October.
Highlights
It is estimated that the buildings’ share of total energy consumption is about 40% (UNEP, 2016)
The results show that the maximum coefficient of performance (COP) values of the Solar Assisted Heat Pump (SAHP) system is more than 5 for all cities
This shows that heat pump performance can be increased significantly in a system assisted with solar energy and latent heat storage
Summary
It is estimated that the buildings’ share of total energy consumption is about 40% (UNEP, 2016). The buildings sector is increasing and this increases energy consumption. A reduction of energy consumption and the use of energy from renewable sources represent important steps towards the reduction of greenhouse gas emissions. Measures to reduce energy consumption could be the increased with the use of energy from renewable energy sources respecting the Kyoto Protocol and by ensuring the global temperature rise remains below 2 °C. European parliament agreed that by 2020, the total greenhouse gases emissions must be at least 20% lower and meet the requirements of the EPBD 2010/31/EU (European Parliament, 2010). Reduced energy consumption and increased use of energy from renewable energy sources play an important role in promoting security of energy supply
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