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Dive into the research topics where Honghyun Cho is active.

Publication


Featured researches published by Honghyun Cho.


Korean Journal of Air-Conditioning and Refrigeration Engineering | 2012

Analysis Study of Performance of CO 2 Microchannel Evaporator According to Frost Growth

Eunsung Shin; Honghyun Cho

The microchannel evaporator with louver fin using carbon dioxide are analyzed according to the frost growth. To predict the performance of microchannel evaporator with the frost growth under low temperature, the simulation condition of previous studies was applied. As a result, the frost thickness increases and its increasing rate is reduced when the operating time increases. Frost thickness increases gradually below the quality of 0.74, and then it decreases rapidly. In addition, the frost growth of present model under same surface temperature is very similar trends with Moallem`s test results. In case of low temperature application, the dimensionless frost thickness increases dramatically and it is about 0.86 after 10 minutes.


International Journal of Refrigeration-revue Internationale Du Froid | 2009

Performance evaluation of a two-stage CO2 cycle with gas injection in the cooling mode operation

Honghyun Cho; Changhyun Baek; Chasik Park; Yongchan Kim


Renewable Energy | 2015

Effects of thermal performance of enclosed-type evacuated U-tube solar collector with multi-walled carbon nanotube/water nanofluid

Yijie Tong; Jinhyun Kim; Honghyun Cho


Applied Thermal Engineering | 2013

Performance characteristics of an automobile air conditioning system with internal heat exchanger using refrigerant R1234yf

Honghyun Cho; Hoseong Lee; Chasik Park


Renewable Energy | 2013

Performance analysis of hybrid solar-geothermal CO2 heat pump system for residential heating

Won-Seok Kim; Jongmin Choi; Honghyun Cho


Applied Thermal Engineering | 2016

Experimental investigation of performance and exergy analysis of automotive air conditioning systems using refrigerant R1234yf at various compressor speeds

Honghyun Cho; Chasik Park


International Journal of Refrigeration-revue Internationale Du Froid | 2013

Optimal control of the gas-cooler pressure of a CO2 heat pump using EEV opening and outdoor fan speed in the cooling mode

Changhyun Baek; Jaehyeok Heo; Jongho Jung; Honghyun Cho; Yongchan Kim


Renewable Energy | 2014

The quantitative evaluation of design parameter's effects on a ground source heat pump system

Honghyun Cho; Jong Min Choi


Renewable Energy | 2014

Performance comparison between R22 and R744 solar-geothermal hybrid heat pumps according to heat source conditions

Jongmin Choi; Byun Kang; Honghyun Cho


International Journal of Refrigeration-revue Internationale Du Froid | 2014

Theoretical analysis of the thermal performance of a plate heat exchanger at various chevron angles using lithium bromide solution with nanofluid

Ting Chen; Jinhyun Kim; Honghyun Cho

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Jong Min Choi

Hanbat National University

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