Energy savings by smart utilization of mechanical and natural ventilation for hybrid residential building model in passive climate

Homod, Raad Z.; Sahari, Khairul Salleh Mohamed

doi:10.1016/j.enbuild.2012.10.034

Cited by 65 publications

(32 citation statements)

References 14 publications

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“…The empirical residential load factor (RLF), which is modeled by the residential heat balance (RHB), is required to calculate a building cooling/heating load. The model parameters can be calculated differently from room to room and are appropriate for the variable air volume (VAV) factor [57]. In this work, a precooling coil is added to humidify the incoming air, which controls the humidity more efficiently inside conditioned space.…”

Section: The Alternative Methodsmentioning

confidence: 99%

Review on the HVAC System Modeling Types and the Shortcomings of Their Application

Homod

2013

Journal of Energy

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The modeling of the heating, ventilation, and air conditioning (HVAC) system is a prominent topic because of its relationship with energy savings and environmental, economical, and technological issues. The modeling of the HVAC system is concerned with the indoor thermal sensation, which is related to the modeling of building, air handling unit (AHU) equipments, and indoor thermal processes. Until now, many HVAC system modeling approaches are made available, and the techniques have become quite mature. But there are some shortcomings in application and integration methods for the different types of the HVAC model. The application and integration processes will act to accumulate the defective characteristics for both AHU equipments and building models such as nonlinear, pure lag time, high thermal inertia, uncertain disturbance factors, large-scale systems, and constraints. This paper shows types of the HVAC model and the advantages and disadvantages for each application of them, and it finds out that the gray-box type is the best one to represent the indoor thermal comfort. But its application fails at the integration method where its response deviated to unreal behavior.

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Section: The Alternative Methodsmentioning

confidence: 99%

Review on the HVAC System Modeling Types and the Shortcomings of Their Application

Homod

2013

Journal of Energy

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“…One is the optimal design of the structural parameters of each component [8,9], and the other is the optimal operation of each component in a system [8,10,11]. In order to optimize the structural parameters of each component, scholars proposed the residential heat balance method [12,13], the residential load factor method [14] and the experiment-data-based empirical method [15][16][17] based on the empirical functions and/or the experimental data. These methods help to design the structural parameters for specific systems, whereas they do not perform well in other systems different from the one with the empirical or experimental data.…”

Section: Introductionmentioning

confidence: 99%

A thermal resistance-based method for the optimal design of central variable water/air volume chiller systems

Chen

Wang

2015

Applied Energy

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“…Tab. 4 shows the increase of space heating and space cooling energy demand if the MVHR system would be removed from the LH and the PH. Space heating and space cooling energy demand increases significantly in the absence of a MVHR system as fresh air supply is not controlled.…”

Section: Performance Of the Mvhr Systemmentioning

confidence: 99%

“…Since these buildings still need fresh air, mechanical ventilation is required [3,4]. The mechanical ventilation system with heat recovery (MVHR) supplies fresh air and ensures significant reductions of space heating and cooling energy consumption, both in residential [5] and office buildings [6].…”

Section: Introductionmentioning

confidence: 99%

Space heating and cooling energy demand in energy efficient single-family house with mechanical ventilation system

2017

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Original scientific paper This paper investigates on the space heating and cooling energy demand as well as on the thermal comfort in energy efficient detached single-family houses with mechanical ventilation heat recovery system. The necessary energy calculations are based on a test reference year with one-hour-step weather data taken for the City of Rijeka which can be seen as an average location in Croatia in terms of weather conditions. The analysis consists of the comparison of three houses with different energy performance levels: a reference single-family house, a low-energy single-family house and a passive single-family house. As expected, the space heating energy demand is lowest in the passive house and highest in the reference house. The thermal comfort is best in the passive house and worst in the reference house. It is concluded that the mechanical ventilation heat recovery system is an indispensable part of the energy system in the passive house and that it can ensure significant energy savings in the low-energy house, too. Keywords: energy efficient house; mechanical ventilation system; space cooling; space heating; thermal comfort Potrebna energija za grijanje i hlađenje u energetski učinkovitoj obiteljskoj kući s mehaničkim sustavom ventilacijeIzvorni znanstveni članak U ovom radu analizira se potrebna energija za grijanje i hlađenje prostora, kao i toplinski komfor u energetski učinkovitim samostojećim obiteljskim kućama sa mehaničkim sustavom ventilacije i rekuperacijom topline. Proračun toplinskih bilanci temelji se na satnim vrijednostima meteoroloških podataka iz referentne godine za područje Grada Rijeke u kojemu se meteorološki uvjeti mogu smatrati prosječnima za područje Hrvatske. Analiza obuhvaća usporedbu triju kuća s različitim razinama energetske učinkovitosti: referentna obiteljska kuća, niskoenergetska obiteljska kuća i pasivna obiteljska kuća. Očekivano, potrebna energija za grijanje je najmanja u pasivnoj kući, a najveća u referentnoj kući. Najbolji toplinski komfor postiže se u pasivnoj kući, a najgori u referentnoj kući. Zaključuje se da je rekuperatorom topline opremljeni mehanički sustav ventilacije nezaobilazan dio termotehničkog sustava pasivne kuće i da takav sustav može osigurati značajne uštede energije i u niskoenergetskoj kući. Ključne

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Energy savings by smart utilization of mechanical and natural ventilation for hybrid residential building model in passive climate

Cited by 65 publications

References 14 publications

Review on the HVAC System Modeling Types and the Shortcomings of Their Application

Review on the HVAC System Modeling Types and the Shortcomings of Their Application

A thermal resistance-based method for the optimal design of central variable water/air volume chiller systems

Space heating and cooling energy demand in energy efficient single-family house with mechanical ventilation system

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