The application of photo-coupler for frost detecting in an air-source heat pump

Byun, Ju Suk; Jeon, Chang Duk; Jung, Ji Hoon; Lee, Jinho

doi:10.1016/j.ijrefrig.2005.06.008

Cited by 83 publications

(24 citation statements)

References 6 publications

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“…Byun et al (Byun, et al 2006) have investigated the use of photo-couplers to detect frost build-up on the evaporator coils of heat pumps. In their laboratory study, the evaporator coil was divided into nine zones and an infrared emitter and receiver were placed in the center of each of the nine zones, between the evaporator fins.…”

Section: Optical Sensorsmentioning

confidence: 99%

Defrost Temperature Termination in Supermarket Refrigeration Systems

Fricke¹,

Sharma²

2011

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Section: Optical Sensorsmentioning

confidence: 99%

Defrost Temperature Termination in Supermarket Refrigeration Systems

Fricke¹,

Sharma²

2011

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“…The heat pump unit absorbs heat from the environment and transfers the energy to the building [1] .High thermal efficiency heat pump had been proposed as a new heating apparatus [1] . Heat pumps are preferred widely used in many applications [2] .The most commonly used coefficient of performance (COP) to evaluate the efficiency of GSHP [2] .…”

Section: Introductionmentioning

confidence: 99%

Performance of heat pump unit with capillary heat exchanger*

Bai

2018

MATEC Web Conf.

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Abstract:The heat pump system utilizes shallow geothermal energy in the coastal areas, which not only uses clean energy but also contributes to energy conservation and environmental protection. This paper studies the performance of a heat pump system applied a capillary heat exchanger as an energy collection device. The numerical performance of capillary heat pump showed a good agreement with the experimental data in the winter heating mode and the summer cooling mode. It was concluded that the COP of the heat pump unit using the capillary heat exchanger was 5.32 in winter and 4.32 in summer.

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“…One obvious advantage for using a heat pump unit is that it can provide heating or cooling from one single machine without any major modification [1]. Air source heat pump (ASHP) units used as cooling or heating source for building heating, ventilating and air conditioning installations have been increasingly and widely applied over the recent decades in many parts of the world [2,3].…”

Section: Introductionmentioning

confidence: 99%