Air-to-Water Heat Pump Monitoring in the Cold Climate Region

2014 ◽  
Vol 590 ◽  
pp. 599-603
Author(s):  
Teer Andrus Koiv ◽  
Mariin Ling ◽  
Kaspar Tennokese
Keyword(s):  
Ambient Temperature ◽  
Heat Pump ◽  
Energy Requirement ◽  
Cold Climate ◽  
Winter Period ◽  
Heating Season ◽  
Cold Region ◽  
Additional Energy ◽  
Climate Region

This article gives an overview of the study on using the air-to-water heat pump (A&WHP) for heating buildings in cold climate regions. The study was conducted in a relatively cold region (59°N), where the ambient temperature during the winter usually falls below-20°C. Despite the fact the COP of the air-to-water heat pump in the winter period was 2.5 on average and during the heating season of 2013/2014 the additional energy requirement was less than 3%.

scholarly journals Study on Fuzzy Control for Air-To-Water Heat Pumps Connected to a Residential Floor Heating System

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Duhui Jiang ◽  
Cui Hongshe
Keyword(s):  
Fuzzy Control ◽  
Ambient Temperature ◽  
Water Temperature ◽  
Heat Pump ◽  
Control Variable ◽  
Heating System ◽  
Radiant Heating ◽  
Heating Season ◽  
Water Control ◽  
Heat Pump Unit

Reducing the supplied water temperature of the air-to-water heat pump to meet the building heat demand can greatly improve the efficiency of the heat pump unit and give full play to the advantages of energy saving and comfort of the floor radiant heating system with an air-to-water heat pump. Based on the variation of ambient temperature and ambient temperature, the domain of fuzzy control is optimized by particle swarm optimization (PSO), and the optimal fuzzy control table is established to adjust the supplied water temperature of the air-to-water heat pump. A transient simulation model of floor radiant heating system for a typical 100 m2 building in China cold regions was developed by using TRNSYS software, and this heating system is simulated by the fuzzy control variable supplied water temperature and the conventional 45°C supplied water control in the whole heating season. The simulation results show that the system energy consumption is saved by 15.9% and SCOP increased by 18.9% by using this fuzzy control compared with the conventional 45°C supplied water control in the whole heating season under the premise of ensuring stable room temperature. Comparing conventional 45°C supplied water control, the fuzzy control can reduce CO2 emissions by 4.3 kg/m2, 4.7 kg/m2, 5.6 kg/m2, 5.2 kg/m2, and 4.9 kg/m2 in Zhengzhou, Qingdao, Beijing, Taiyuan, and Zhangjiakou, respectively.

Evaluation of the performance of a centralized ground-water heat pump system in cold climate region

2014 ◽  
Vol 8 (3) ◽  
pp. 394-402 ◽  
Author(s):  
Shilei Lu ◽  
Zhe Cai ◽  
Li Zhang ◽  
Yiran Li
Keyword(s):  
Ground Water ◽  
Heat Pump ◽  
Cold Climate ◽  
Pump System ◽  
Heat Pump System ◽  
Climate Region

Feasibility Study about Solar Energy-Air Source Heat Pump System in Cold Region Rural Residential Applications

2014 ◽  
Vol 672-674 ◽  
pp. 113-116 ◽  
Author(s):  
Kun Ru Ma ◽  
Lu Jin ◽  
Li Juan Yan
Keyword(s):  
Heat Pump ◽  
Residential Area ◽  
Heating Season ◽  
Cold Region ◽  
Pump System ◽  
Heat Pump System ◽  
Air Source Heat Pump ◽  
Fluctuation Range ◽  
Collecting Efficiency ◽  
Guarantee Rate

This paper proposes a solar-air compound source heat pump system, for the rural residential area of Hebei and independent villas. The system can realize heating in winter and refrigerating in summer, and demand of heat water. This paper simulates and analyzes the winter heating situation of this system. The entire heating season, heat collecting efficiency of the solar collector is 0.45 in average, and solar guarantee rate is 46%. Solar-air compound source heat pump system average COP is 4.5 in the heating season, increased by 26% than the air source heat pump system run separately , and the fluctuation range is small. Throughout the heating season, the contribution of solar collectors is 59%, the contribution of air source heat pump is 41%.

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