Performance of building energy supply systems using renewable energy

2020 ◽  
Vol 44 (13) ◽  
pp. 9960-9973
Author(s):  
Rongdan Diao ◽  
Linzhu Sun ◽  
Fang Yang ◽  
Bo Lin
Keyword(s):  
Renewable Energy ◽  
Energy Supply ◽  
Building Energy ◽  
Supply Systems ◽  
Energy Supply Systems

scholarly journals Profitability of Various Energy Supply Systems in Light of Their Different Energy Prices and Climate Conditions

Buildings ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 100 ◽  
Author(s):  
Elaheh Jalilzadehazhari ◽  
Georgios Pardalis ◽  
Amir Vadiee
Keyword(s):  
Renewable Energy ◽  
Heat Pump ◽  
Energy Supply ◽  
Ground Source Heat Pump ◽  
Energy Prices ◽  
Single Family ◽  
Climate Zones ◽  
Ground Source ◽  
Supply Systems ◽  
Energy Supply Systems

The majority of the single-family houses in Sweden are affected by deteriorations in building envelopes as well as heating, ventilation and air conditioning systems. These dwellings are, therefore, in need of extensive renovation, which provides an excellent opportunity to install renewable energy supply systems to reduce the total energy consumption. The high investment costs of the renewable energy supply systems were previously distinguished as the main barrier in the installation of these systems in Sweden. House-owners should, therefore, compare the profitability of the energy supply systems and select the one, which will allow them to reduce their operational costs. This study analyses the profitability of a ground source heat pump, photovoltaic solar panels and an integrated ground source heat pump with a photovoltaic system, as three energy supply systems for a single-family house in Sweden. The profitability of the supply systems was analysed by calculating the payback period (PBP) and internal rate of return (IRR) for these systems. Three different energy prices, three different interest rates, and two different lifespans were considered when calculating the IRR and PBP. In addition, the profitability of the supply systems was analysed for four Swedish climate zones. The analyses of results show that the ground source heat pump system was the most profitable energy supply system since it provided a short PBP and high IRR in all climate zones when compared with the other energy supply systems. Additionally, results show that increasing the energy price improved the profitability of the supply systems in all climate zones.

Symbolic thermoeconomics in building energy supply systems

2016 ◽  
Vol 127 ◽  
pp. 561-570 ◽  
Author(s):  
Ana Picallo ◽  
Cesar Escudero ◽  
Iván Flores ◽  
José Mª Sala
Keyword(s):  
Energy Supply ◽  
Building Energy ◽  
Supply Systems ◽  
Energy Supply Systems

scholarly journals Efficient Methods of Market Pricing in Power Industry within the Context of System Integration of Renewable Energy Sources

Energies ◽  
2019 ◽  
Vol 12 (17) ◽  
pp. 3250 ◽  
Author(s):  
Evgeny Lisin ◽  
Galina Kurdiukova ◽  
Pavel Okley ◽  
Veronika Chernova
Keyword(s):  
Renewable Energy ◽  
Energy Supply ◽  
Power Plants ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Market Value ◽  
Economic Incentives ◽  
Energy Sources ◽  
Supply Systems ◽  
Energy Supply Systems

Currently, the majority of world economies (even those located in the sunbelt (+/− 35 degrees of latitude with good sunshine with low seasonality) uses various types of fossil fuels as the main source of energy for their economies. However, this represents a very volatile and unsustainable strategy, since according to various estimates, the fossil fuel era will inevitably end as all carbon fuels are going to be spent in the next few centuries. Unlike traditional energy, renewable energy sources (RES) are not based on energy resources, but rather rely upon natural energy flows. With regard to its unique property, there has been an active construction of power plants of renewable energy and their gradual integration into national energy supply systems in recent decades. At the same time, the existing models of electricity markets were unprepared for their wide distribution. Hence, determination of the market value of energy generated by power plants using renewable energy sources becomes a particularly significant issue. This market value has to take into account the prevention of costs from the use of fossil fuels, as well as the resulting environmental benefits. Our paper proposes methods for solving this problem, contributing to the increase of economic efficiency of investment projects for the construction of renewable energy facilities and the formation of economic incentives for their propagation in energy supply systems. The proposed methods are based on the dynamic differentiation of tariffs for consumers with renewable energy sources depending on their structure of electricity consumption. Its effectiveness is demonstrated by calculating the cost of electricity for households located in the Krasnodar region using renewable energy sources. It is shown that this approach to the formation of tariffs for consumers allows the household to receive additional savings from the efficient use of energy installations on RES and energy storage devices in terms of alignment of the energy consumption schedule. This creates a significant incentive for households to use them and contributes to increasing the effectiveness of government renewable energy support programs, including by solving the acute problem of raising electricity tariffs from the grid.

scholarly journals Comparative Study on Performance of Renewable Energy Building Energy Supply System

2021 ◽  
Vol 233 ◽  
pp. 01077
Author(s):  
Jiang Xiufang ◽  
Diao Rongdan ◽  
Zeng Li ◽  
Zhang Ying ◽  
Lei Xinrong
Keyword(s):  
Renewable Energy ◽  
Energy Supply ◽  
Test Bench ◽  
Supply System ◽  
Outlet Temperature ◽  
Performance Parameters ◽  
Energy Supply System ◽  
Correlation Degree ◽  
Supply Systems ◽  
Energy Supply Systems

The air source heat pump water system test bench and the compact all-glass vacuum tube solar water heating system test bench are (were) built on the roof of two adjacent teacher’s apartment buildings with the same structure, shape and material were constructed to study the performance of energy supply systems for different types of renewable energy buildings. The energy supply system performance and the performance parameters are comprehensively and systematically analyzed in the same environment conditions of the same period. The results show that the weight coefficients of the performance parameters of the two energy supply systems are equal by means of extension theory analysis. At the last, the comprehensive correlation degree Kj(1) of water outlet temperature on the performance of renewable energy power supply system is 2.07, the comprehensive correlation degree Kj(2) of water inlet temperature is 2.04, the comprehensive correlation degree Kj(3) of air temperature is 2.14, the comprehensive correlation degree Kj(4) of solar radiation is 4.97, and the comprehensive correlation degree Kj(5) of sunshine hours is 3.78.

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