Energetic performance analysis of a ground-source heat pump system with latent heat storage for a greenhouse heating

2011 ◽  
Vol 52 (1) ◽  
pp. 581-589 ◽  
Author(s):  
Hüseyin Benli
Keyword(s):  
Performance Analysis ◽  
Latent Heat ◽  
Heat Pump ◽  
Heat Storage ◽  
Ground Source Heat Pump ◽  
Latent Heat Storage ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source ◽  
Energetic Performance

Performance analysis of photovoltaic-thermal road assisted ground source heat pump system during non-heating season

Solar Energy ◽  
2021 ◽  
Vol 221 ◽  
pp. 10-29
Author(s):  
Bo Xiang ◽  
Yasheng Ji ◽  
Yanping Yuan ◽  
Chao Zeng ◽  
Xiaoling Cao ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Heat Pump ◽  
Ground Source Heat Pump ◽  
Heating Season ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source

scholarly journals Designing and Optimizing Heat Storage of a Solar-Assisted Ground Source Heat Pump System in China

2020 ◽  
Vol 2020 ◽  
pp. 1-18 ◽  
Author(s):  
Yan Gao ◽  
Zhi Sun ◽  
Xinxing Lin ◽  
Chuang Wang ◽  
Zongyu Sun ◽  
...  
Keyword(s):  
Soil Temperature ◽  
Heat Pump ◽  
Solar Collector ◽  
Heat Storage ◽  
Ground Source Heat Pump ◽  
Cold Region ◽  
Annual Average ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source

The cold accumulation problem can lead to performance degradation of heat pumps. This paper presents the design and optimization of a solar-assisted storage system to solve this issue. A ground source heat pump (GSHP) project was established using the transient system simulation program (TRNSYS) based on a ground heat exchange theoretical model, which was validated by a previously established experiment in Beijing. The Beijing, Harbin, and Zhengzhou regions were used in numerical simulations to represent three typical cities where buildings require space heating (a cold region, a severe cold region, and a hot summer and cold winter region, respectively). System performance was simulated over periods of ten years. The simulation results showed that the imbalance efficiencies in the Beijing, Harbin, and Zhengzhou regions are 55%, 79%, and 38%, respectively. The annual average soil temperature decreases 7.3°C, 11.0°C, and 5.3°C during ten years of conventional GSHP operation in the Beijing, Harbin, and Zhengzhou regions, respectively. Because of the soil temperature decrease, the minimum heating coefficient of performance (COP) values decrease by 23%, 46%, and 11% over the ten years for GSHP operation in these three regions, respectively. Moreover, the simulation data show that the soil temperature would still be decreasing if based on the previous solar energy area calculation method. Design parameters such as the solar collector size are optimized for the building load and average soil temperature in various cold regions. Long-term operation will test the matching rate of the compensation system with the conventional GSHP system. After the system is optimized, the solar collector area increases of 20% in the Beijing region, 25% in the Harbin region, and 15% in the Zhengzhou region could help to maintain the annual average soil temperature balance. The optimized system could maintain a higher annual average COP because of the steady soil temperature. It provides a method for the design of a solar collector area which needs to be determined in the seasonal heat storage solar ground source heat pump system.

scholarly journals A Study on the Effect of Performance Factor on GSHP System through Real-Scale Experiments in Korea

Energies ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 554
Author(s):  
Hongkyo Kim ◽  
Yujin Nam ◽  
Sangmu Bae ◽  
Jae Sang Choi ◽  
Sang Bum Kim
Keyword(s):  
Heat Pump ◽  
System Performance ◽  
Storage Tank ◽  
Heat Storage ◽  
Design Method ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source ◽  
High Efficient

A ground source heat pump system is one of the high-efficient technologies for space heating and cooling since it uses stable underground temperature. However, in actual application, many situations cannot be achieved due to the unsuitable design of operation. In particular, the design characteristics of buildings with different building load patterns are not reflected by the conventional design method. Moreover, the design capacity of the heat pump can be reduced by designing less capacity than the peak load through the introduction of the heat storage tank, but there is no related quantitative design method. Therefore, in this study, the effect of the ground source heat pump system design factors such as shape, length of the ground heat exchanger, and the capacity of the heat storage tank on the system performance was analyzed. To quantify the effect of such factors on system performance, an experimental plant was constructed and case studies were conducted for each design factor.

scholarly journals Performance analysis of an R744 ground source heat pump system with air-cooled and water-cooled gas coolers

2016 ◽  
Vol 63 ◽  
pp. 72-86 ◽  
Author(s):  
Haitao Hu ◽  
Trygve Magne Eikevik ◽  
Petter Neksa ◽  
Armin Hafner ◽  
Guoliang Ding ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Heat Pump ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source
Sign in / Sign up

Export Citation Format

Share Document