Thermosiphon heat pump for pipe freeze preventing of domestic passive solar water heater

this paper constructs a new type experimental investigation of a heat storage solar water heater -water/air source heat pump double stage coupling capillary network radiation heating system, The system is a combination of a solar clean , reproducibility and water/air source heat pump energy saving property, is a kind of energy saving, pollution-free energy efficient system. In qinhuangdao local climatic conditions test capillary network radiation heating, water source heat pump, air source heat pump operation parameters, analyzes the system as a whole, it is concluded that the operation of heat storage solar water heater - water/air source heat pump double stage coupling capillary network radiation heating system is suitable for in qinhuangdao climate condition in application.

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Experimental study on spiral flow passive solar water heater

Applied Solar Energy ◽

10.3103/s0003701x13020060 ◽

2013 ◽

Vol 49 (2) ◽

pp. 89-92 ◽

Cited By ~ 2

Author(s):

S. Maheshwaran ◽

K. Kalidasa Murugavel

Keyword(s):

Experimental Study ◽

Solar Water Heater ◽

Spiral Flow ◽

Water Heater ◽

Solar Water ◽

Passive Solar

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Analysis on the Operating Characteristics of Solar Water Heater in Combination with Air Source Heat Pump Water Heater

Proceedings of the ISES Solar World Congress 2011 ◽

10.18086/swc.2011.26.07 ◽

2011 ◽

Author(s):

Aiguo Jiang ◽

Wang Xiao-zhong

Keyword(s):

Heat Pump ◽

Solar Water Heater ◽

Operating Characteristics ◽

Water Heater ◽

Solar Water ◽

Air Source Heat Pump ◽

Heat Pump Water Heater

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Performance analysis of solar water heater combined with heat pump using refrigerant mixture

Applied Energy ◽

10.1016/j.apenergy.2008.05.014 ◽

2009 ◽

Vol 86 (5) ◽

pp. 748-756 ◽

Cited By ~ 25

Author(s):

Atipoang Nuntaphan ◽

Choosak Chansena ◽

Tanongkiat Kiatsiriroat

Keyword(s):

Performance Analysis ◽

Heat Pump ◽

Solar Water Heater ◽

Water Heater ◽

Solar Water ◽

Refrigerant Mixture

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Analysis on the Operating Characteristics of Solar Water Heater in Combination with Air Source Heat Pump Water Heater

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.393-395.601 ◽

2011 ◽

Vol 393-395 ◽

pp. 601-603

Author(s):

Ai Guo Jiang ◽

Xiao Zhong Wang

Keyword(s):

Water Temperature ◽

Heat Pump ◽

Hot Water ◽

Solar Water Heater ◽

Operating Characteristics ◽

Water Heater ◽

Solar Water ◽

Air Source Heat Pump ◽

Heat Pump Water Heater ◽

Collector Efficiency

Solar water heater cannot supply hot water in cloudy and raining days alone. It in combination with air source heat pump water heater (ASHPWH) is a good choice. The performance of the two kinds of water heater is affected by the water temperature. It is important that the ASHPWH operate at a right temperature of the water. A solar water heater with 4m2 flat-plate collector assisted by a 1.5kW ASHPWH is studied in this paper. The results show that both the collector efficiency of the solar water heater and the COP of the ASHPWH system decreases as the water temperature increases. The highest and lowest collector efficiency of the solar water heater are 54.4% and 45.6% respectively. The COP of the ASHPWH system ranges from 6.48 to 2.61 as the water temperature increases. Operating sequences of these two kinds of water heater affect solar energy utilization ratio and the power input of the ASHPWH system.

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