Assessing the energy and indoor-PM2.5-exposure impacts of control strategies for residential energy recovery ventilators

Zhong, Xuyang; Wu, Wei; Ridley, Ian

doi:10.1016/j.jobe.2019.101137

Cited by 12 publications

(13 citation statements)

References 36 publications

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“…The performance of the system about the efficiency and recovered energy was evaluated and analysed by adopting the methods in previous studies taking into account equal airflow rates in the intake and exhaust airstreams. [9][10][11][12][13][14] With the measured data, the experimental energy recovery efficiency of the tested system can be calculated using Equations ((3))-(( 6)), according to ASHRAE Standard (2003). 34 The sensible efficiency (ε sen ) is commonly termed as temperature efficiency can be defined as temperature differences between supply and exhaust airstreams (Equation ((3)))…”

Section: Data Attainment and Analysismentioning

confidence: 99%

“…7,8 This process is essential in maintaining acceptable IAQ whilst keeping energy costs low and reducing overall energy consumption and carbon dioxide emissions. 9,10 By categorising these systems into process-based, they can be divided into sensible and total energy recovery systems. 11 A total air-to-air energy recovery system was used in the present study, which is also called as an enthalpy recovery system.…”

Section: Introductionmentioning

confidence: 99%

“…These systems work based on principle and process to recover or exchange heat and/or moisture between two different airstreams at different temperatures and humidities 7,8 . This process is essential in maintaining acceptable IAQ whilst keeping energy costs low and reducing overall energy consumption and carbon dioxide emissions 9,10 …”

Section: Introductionmentioning

confidence: 99%

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Thermal performance of a fixed‐plate air‐to‐air energy recovery system for building application in hot and humid environment

et al. 2021

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An analysis of the performance of a fixed-plate air-to-air energy recovery system on its efficiency and recovered energy for potential building applications in the hot and humid environment was performed. Investigations were executed under controlled laboratory conditions in an energy testing chamber.Tests were carried out with varying operating parameters in terms of airflow rates that ranged from 1.0 to 3.0 m/s, intake air temperature of 28 C, 31 C, 35 C, 40 C and intake relative humidity of 70%, 75% and 80%. The performance was analysed by adopting the calculation methods of the ASHRAE Standard. This study showed that increased airflow rate decreased efficiency.The increase of airflow rate raised the recovered energy of the system. The study indicated that increasing values of intake air temperature (T in ) resulted in the increase of efficiency and recovered energy. A decrease in the efficiency of the system was observed, notably when the intake relative humidity (RH in ) increased.

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Section: Data Attainment and Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Thermal performance of a fixed‐plate air‐to‐air energy recovery system for building application in hot and humid environment

et al. 2021

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“…Ventilation or filtration control has been widely applied to improve indoor PM concentration from indoor and outdoor sources [7][8][9][10][11][12][13][14]. Ventilation is defined as the process by which outdoor and indoor air is exchanged through mechanical ventilation systems.…”

Section: Introductionmentioning

confidence: 99%

“…Filtration is defined as the process by which indoor air is recirculated and indoor PM2.5 is removed by filtration filter. Ventilation is advantageous for overall indoor air quality (IAQ) by lowering the concentration of other indoor pollutants emitted from building materials, furniture, occupants, etc., but when the outdoor PM concentration is high, contaminated outdoor air can be introduced to increase the indoor PM concentration [9,14]. When ventilation is not recommended due to high outdoor concentrations, indoor air filtration may be an alternative control strategy to remove indoor PM.…”

Section: Introductionmentioning

confidence: 99%

Ventilation and Filtration Control Strategy Considering PM2.5, IAQ, and System Energy

Kim¹,

Kim

Yeo

2020

Atmosphere

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Ventilation or filtration control is widely applied to improve indoor particle matter (PM) concentration. Adjusting the ventilation rates to control indoor PM levels can affect the concentration of other indoor pollutants and energy costs, and increasing the filtration flow rate can lower the indoor PM concentration, but also increase the fan energy consumption. In this study, we developed a ventilation and filtration control strategy to determine the optimal control mode and flow rate of the system to meet indoor PM (especially PM2.5) concentration, ensure adequate indoor air quality (IAQ), and minimize fan energy consumption. First, a dynamic model to estimate the indoor PM2.5 generation rate was developed based on the mass balance model and then verified by experiments. Next, the control limit (CL) curve was developed on the basis of the indoor PM2.5 characteristics depending on ventilation and filtration control during various indoor and outdoor PM2.5 conditions (indoor PM2.5 generation rate and outdoor PM2.5 concentration). In addition, an algorithm was proposed to determine the optimal control mode and flow rate of the system. Condition zone control can keep indoor PM2.5 below or as close to the desired target concentration as possible, maintain IAQ within acceptable ranges, and save about 15~70% of fan energy compared with the conventional rule-based control under the case condition.

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The residential application of chain recooling energy recovery ventilator system in a hot and humid climate

Liu

Shen

Chen

2023

Heliyon

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Assessing the energy and indoor-PM2.5-exposure impacts of control strategies for residential energy recovery ventilators

Cited by 12 publications

References 36 publications

Thermal performance of a fixed‐plate air‐to‐air energy recovery system for building application in hot and humid environment

Thermal performance of a fixed‐plate air‐to‐air energy recovery system for building application in hot and humid environment

Ventilation and Filtration Control Strategy Considering PM2.5, IAQ, and System Energy

The residential application of chain recooling energy recovery ventilator system in a hot and humid climate

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