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

Performance Characteristics of a Combined Ejector-Absorption Heat Pump Using NH3-H2O

1999 ◽  
Author(s):  
D. A. Kouremenos ◽  
E. D. Rogdakis ◽  
G. K. Alexis
Keyword(s):  
Heat Pump ◽  
Gain Factor ◽  
Coefficient Of Performance ◽  
Detailed Calculation ◽  
Absorption System ◽  
Evaporator Temperature ◽  
Pump System ◽  
Heat Gain ◽  
Absorption Heat Pump ◽  
Heat Pump System

Abstract Absorption system have been investigated for many years. However, coefficient of performance COP or heat gain factor HGF for absorption systems are significantly lower than those for conventional compression systems. This has restricted their wide application. This paper discusses the behavior of mixture NH3-H2O through of an ejector, operating in an absorption heat pump system. This combination improves the performance of conventional absorption system and with the phasing out of ozone-damaging refrigerants, absorption refrigerators, heat pumps and air-conditioning now provide a potential alternative. For the detailed calculation of the proposed system a method has been developed, which employs analytical functions describing the thermodynamic properties of die mixture. The influence of three major parameters: generator, condenser and evaporator temperature, on ejector efficiency and heat gain factor of the system is discussed. Also the maximum value of HGF was estimated by correlation of above three temperatures.

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.

Development and testing of a prototype of absorption heat pump system operated by solar energy

2002 ◽  
Vol 22 (16) ◽  
pp. 1847-1859 ◽  
Author(s):  
Adnan Sözen ◽  
Duran Altıparmak ◽  
Hüseyin Usta
Keyword(s):  
Solar Energy ◽  
Heat Pump ◽  
Pump System ◽  
Absorption Heat Pump ◽  
Heat Pump System

Study of a micro absorption heat pump system

2008 ◽  
Vol 31 (7) ◽  
pp. 1198-1206 ◽  
Author(s):  
J.S. Hu ◽  
Christopher Y.H. Chao
Keyword(s):  
Heat Pump ◽  
Pump System ◽  
Absorption Heat Pump ◽  
Heat Pump System

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.

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