A Study on Condensation Occurrence Ratio and Energy Recovery Ratio in Winter/Summer of Energy Recovery Ventilator According to Latent Effectiveness

Ko, Young Gwan; Somi, Jang; Song, D. X.; Hiki, Hong

doi:10.6110/kjacr.2020.32.10.457

Cited by 2 publications

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“…Meanwhile, in the case of ventilation, a paper-based plate-type energy recovery ventilator (ERV) has been commercialized and applied in many buildings. According to a previous study, the paper plate-type ERV reduced the cooling load by 6.3 % compared to simple forced ventilation, while the rotary-type ERV using a desiccant rotor reduced it by 20.9 % [9,10]. It was analyzed that, in the case of the existing paper material, the temperature exchange efficiency was high, but the humidity exchange efficiency was low, resulting in poor performance [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Suitability analysis of a temperature and humidity control device using a desiccant rotor

Jeong

Hiki

2023

J Mech Sci Technol

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As the amount of ventilation required in buildings has increased to prevent the spread of COVID-19, the inflow of high humidity outside air in summer has increased the processing rate of latent heat loads as well as sensible heat loads. Accordingly, the ability to handle the latent heat load with low energy consumption has become important in order to maintain a comfortable indoor environment. In this study, a humidity control device composed of a desiccant rotor was designed and manufactured, and performance experiments were performed. Using an empirical formula obtained through experiments, a thermal environment simulation was conducted for a school classroom. Furthermore, a temperature-humidity control device that combines a desiccant rotor and heat pump was proposed, and the performance and energy consumption were analyzed by comparing it with the existing heat pump design. With conventional temperature control method using a heat pump, the average indoor relative humidity values in August were 65.7 %, which exceeds the set relative humidity range of 50±5 %. On the other hand, when using the temperature-humidity control device, the average indoor relative humidity values in August was 50.2 %, a more comfortable indoor environment than when using a conventional method. In addition, the energy consumption was reduced by 3 % compared to existing heat pump design.

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Section: Introductionmentioning

confidence: 99%

Suitability analysis of a temperature and humidity control device using a desiccant rotor

Jeong

Hiki

2023

J Mech Sci Technol

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“…In addition, cooling systems for summer are mainly supplied to buildings that use them for rooms not smaller than 8 Pyeong, and there are many study reports on cooling technology for the forced convective heat transfer by air circulation method [3]. As the demand for houses of one-person households is gradually increasing, studies on technologies for cooling systems suitable for small cabins for one person are urgently required, but the current study result reports are insufficient [4]. In addition, study reports on cooling technologies for elderly persons' small cabins for one person, which are beneficial to both sleeping and health, are desperately required but such study reports are still somewhat insufficient [5].…”

Section: Introductionmentioning

confidence: 99%

A Study on the Cooling Load of Small Cabins for One Person

Cho¹

2021

JHSTI

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This study was conducted to lay cold water panels inside the ocher walls of a small cabin for one person and install cold water tubes inside the cold-water panels for radiant cooling with the absorption of thermal energy by the cold water for the first time at home and abroad. One-person households are increasing, and the current number of one-person households is about 5.61 million, accounting for 28.6% of all households. One-person households are still gradually increasing. However, study reports on small cabins for one person are rare at home and abroad. Therefore, this study was conducted to examine the sizes of beds for small houses for one person, which can be utilized as beds at normal times and can be used to take cold pack at home by those who like cold pack in hot summer. The findings of this study, which include the results of simulations of changes in the flow rate of the cold water circulating in the cold water panels of small cabins for one person and the distribution of the temperatures of the air inside the small cabins for one person in relation to changes in the outdoor temperatures in summer, indicated that the air temperature inside the small cabins for one person was linearly reduced by the radiative heat transfer and that well-being low-temperature distributions beneficial to health were shown.

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A Study on Condensation Occurrence Ratio and Energy Recovery Ratio in Winter/Summer of Energy Recovery Ventilator According to Latent Effectiveness

Cited by 2 publications

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Suitability analysis of a temperature and humidity control device using a desiccant rotor

Suitability analysis of a temperature and humidity control device using a desiccant rotor

A Study on the Cooling Load of Small Cabins for One Person

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