scholarly journals Study of stand-alone building heating system operating with renewable energy sources under moderate continental climate conditions

2021 ◽  
Vol 289 ◽  
pp. 05005
Author(s):  
Ivan Sokolov ◽  
Artem Ryzhenkov ◽  
Elizaveta Tyabut
Keyword(s):  
Renewable Energy ◽  
Heat Pump ◽  
Heat Supply ◽  
Research University ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Full Potential ◽  
Heating Period ◽  
Pump System ◽  
Heat Pump System

The climatic conditions in Moscow limit to a certain extent the utilization of renewable energy sources for heat supply. Long heating period, relatively low average daily sunshine hours during heating period, and low outside temperatures act as barriers to realising the full potential of renewable energy sources. The paper presents an evaluation of feasibility and effectiveness of using various renewable energy sources in the heat supply system of Block 23 of the National research university «MPEI». The system arrangement for heat supply of the building with renewable energy sources is described. Experimental data have been obtained on the basis of this system. The calculated time dependences of building heat consumption and heat pump system (HPS) outputs are given. In addition, for the air-source heat pump system, the dependence on the outdoor temperature is given. Values of HPS efficiency indices are also presented. A comparative analysis of the efficiency of air-source HPS and liquid-to-liquid HPS with a geothermal circuit in winter conditions is carried out.

scholarly journals Development of Optimal Design Method for Ground-Source Heat-Pump System Using Particle Swarm Optimization

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4850
Author(s):  
Hyeongjin Moon ◽  
Jae-Young Jeon ◽  
Yujin Nam
Keyword(s):  
Renewable Energy ◽  
Heat Pump ◽  
Optimization Design ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Geothermal Heat ◽  
Pump System ◽  
Heat Pump System ◽  
Geothermal Heat Pump ◽  
Building Load

The building sector is an energy-consuming sector, and the development of zero-energy buildings (ZEBs) is necessary to address this. A ZEB’s active components include a system that utilizes renewable energy. There is a heat-pump system using geothermal energy. The system is available regardless of weather conditions and time, and it has attracted attention as a high-performance energy system due to its stability and efficiency. However, initial investment costs are higher than other renewable energy sources. To solve this problem, design optimization for the capacity of geothermal heat-pump systems should be performed. In this study, a capacity optimization design of a geothermal heat-pump system was carried out according to building load pattern, and emphasis was placed on cost aspects. Building load patterns were modeled into hospitals, schools, and apartments, and, as a result of optimization, the total cost over 20 years in all building load patterns was reduced.

Research on the Energy Efficiency Evaluation System for Surface Water Source Heat Pump System in Northeast Cold Region of China

2013 ◽  
Vol 361-363 ◽  
pp. 220-223
Author(s):  
Liang Yu ◽  
Meng Yun Sun ◽  
Guo Hui Feng ◽  
Wei Gao
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Surface Water ◽  
Heat Pump ◽  
Evaluation System ◽  
Renewable Energy Sources ◽  
Rapid Development ◽  
Building Energy ◽  
Energy Sources ◽  
Pump System

As the rapid development of urbanization in China, the conservation of building energy has become a world trend, the rapid rise of building energy will lead a huge pressure on energy supply and environment protection. Renewable energy sources, like solar and geothermal energy, have the incomparable superiority than conventional energy sources, if renewable energy sources could replace conventional energy source and play a major role fully, the serious energy consumption must be relieved effectively. In this thesis, the summer-refrigeration of SWHP (Surface Water Heat Pump) is set as the research target, the applicability research of SWHP is carried out, apart from that, building the evaluation system and putting forward the level determination method of energy efficiency.

Numerical Simulations of a Ground Source Heat Pump System With Pile Heat Exchangers

2014 ◽  
Vol 7 (1) ◽  
Author(s):  
Masahito Oguma ◽  
Takeshi Matsumoto ◽  
Takao Kakizaki
Keyword(s):  
Numerical Simulation ◽  
Numerical Simulations ◽  
Heat Pump ◽  
Heat Exchangers ◽  
Heat Supply ◽  
Ground Surface ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source

Feasibility of a ground source heat pump (GSHP) system with pile heat exchangers for use in houses is evaluated through a numerical simulation. This GSHP system differs from ordinary borehole-type GSHP systems because short foundation piles installed at close intervals are used as heat exchangers. It is shown that the annual heat supply provided by this GSHP system is able to satisfy the demand of a house due to the air-source exchange at ground surface.

scholarly journals Hybrid Absorption Heat Pump System Using Renewable Energy

2017 ◽  
Vol 181 ◽  
pp. 738-745
Author(s):  
Răzvan Calotă ◽  
Alina Girip ◽  
Anica Ilie ◽  
Lucian Cîrstolovean
Keyword(s):  
Renewable Energy ◽  
Heat Pump ◽  
Pump System ◽  
Absorption Heat Pump ◽  
Heat Pump System

scholarly journals A comparative study of industrial heat supply based on second-law analysis and operating costs

2018 ◽  
Vol 22 (5) ◽  
pp. 2203-2213 ◽  
Author(s):  
Magdalena Wolf ◽  
Thomas Detzlhofer ◽  
Tobias Proll
Keyword(s):  
Natural Gas ◽  
Gas Turbine ◽  
Heat Pump ◽  
Heat Supply ◽  
Combined Cycle ◽  
Coefficient Of Performance ◽  
Saturated Steam ◽  
Heat Recovery Boiler ◽  
Pump System ◽  
Heat Pump System

In this paper, the thermodynamic and economic efficiency of three different heat supply processes are compared, based on exergy flows and costs of heat. A gas turbine process with a heat recovery boiler, a gas and steam turbine combined cycle process and a high temperature heat pump system recovering waste heat are analysed. The aim is to provide heat as 4 bar(abs) saturated steam. The economic analysis bases on the comparison of the consumption-related costs of heat, the capital-related costs of heat, and the operation-related costs of heat. The results show that the heat pump system has higher exergetic efficiency than the gas turbine or the gas turbine combined cycle process. For the consumption related costs, the economic calculation shows that the operation of a heat pump, working with a coefficient of performance of four and for a natural gas price of 25 ?/MWh, is the cheapest way of heat production as long as the electricity price is lower than 45 ?/MWh. For the period from January 2013 until June 2016 the total costs of heat, based on real gas and electricity prices from the European Energy Exchange, are calculated and analysed. The results show that the share of heat provided by the heat pump system varies between 45% and 76%. Especially in 2013 and 2014, the economic conditions for operating heat pumps were very good. Since October 2015 the natural gas prices have seen a decrease which favours industrial heat supply with combined heat and power systems.

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