A multi-criterion renewable energy system design optimization for net zero energy buildings under uncertainties

Zhang, Sheng; Huang, Pei; Sun, Yongjun

doi:10.1016/j.energy.2015.11.044

Cited by 146 publications

(77 citation statements)

References 26 publications

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“…validated by the developers (e.g., Type 666 for the chiller, Type 742 for the constant speed pump in the primary chilled water loop, Type 741 for the variable speed pump in the secondary chilled water loop, Type 744 for the ventilation fan), which are the same as those in previous studies[12,[67][68][69][70][71][72]. The energy consumption of the chiller is calculated from Equations 8-12, and the energy consumptions of the pumps and fans are estimated using Equations 13 and 14 respectively[71][72][73]. The key air conditioning system in TRNSYS are summarized inTable 2, more detailed descriptions of the energy consumption evaluation of the air conditioning system are available in studies[67][68][69][70][71][72].…”

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confidence: 90%

“…The energy consumption of the chiller is calculated from Equations 8-12, and the energy consumptions of the pumps and fans are estimated using Equations 13 and 14 respectively[71][72][73]. The key air conditioning system in TRNSYS are summarized inTable 2, more detailed descriptions of the energy consumption evaluation of the air conditioning system are available in studies[67][68][69][70][71][72].…”

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confidence: 99%

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Optimization on fresh outdoor air ratio of air conditioning system with stratum ventilation for both targeted indoor air quality and maximal energy saving

Cheng

Zhang

Huan

et al. 2019

Building and Environment

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108

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Fo r m o r e info r m a tio n, in cl u di n g o u r p olicy a n d s u b mi s sio n p r o c e d u r e , pl e a s e c o n t a c t t h e R e p o si to ry Te a m a t: u si r@ s alfo r d. a c. u k .Please cite this article as: Cheng Y, Zhang S, Huan C, Oladokun MO, Lin Z, Optimization on fresh outdoor air ratio of air conditioning system with stratum ventilation for both targeted indoor air quality and maximal energy saving, Building and Environment (2018), doi: https://doi. AbstractStratum ventilation can energy efficiently provide good inhaled indoor air quality with a proper operation (e.g., fresh outdoor air ratio). However, the non-uniform CO 2 distribution in a stratum-ventilated room challenges the provision of targeted indoor air quality. This study proposes an optimization on the fresh outdoor air ratio of stratum ventilation for both the targeted indoor air quality and maximal energy saving.A model of CO 2 concentration in the breathing zone is developed by coupling CO 2 removal efficiency in the breathing zone and mass conservation laws. With the developed model, the ventilation parameters corresponding to different fresh outdoor air ratios are quantified to achieve the targeted indoor air quality (i.e., targeted CO 2 concentration in the breathing zone). Using the fresh outdoor air ratios and corresponding ventilation parameters as inputs, energy performance evaluations of the air conditioning system are conducted by building energy simulations. The fresh outdoor air ratio with the minimal energy consumption is determined as the optimal

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confidence: 90%

mentioning

confidence: 99%

Optimization on fresh outdoor air ratio of air conditioning system with stratum ventilation for both targeted indoor air quality and maximal energy saving

Cheng

Zhang

Huan

et al. 2019

Building and Environment

Self Cite

108

View full text Add to dashboard Cite

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“…However, this could increase the cost and system complexity of the ventilation system. The design of the ventilation system should balance the capability to satisfy differentiated thermal preferences and the increased cost and system complexity, e.g., using the multi-criteria decision-making method [48].…”

Section: Discussionmentioning

confidence: 99%

“…weighting factors [48] to prioritize the thermal comforts of the occupants concerned particularly. This study only presents the PMVs of the subzones at the height of 1.1 m which are adequate for the evaluation of thermal comfort under stratum ventilation, and more detailed information about the microclimates of stratum ventilation can be found in Studies [15,32].…”

Section: Discussionmentioning

confidence: 99%

“…The evaluation method of the capability of the ventilation system to satisfy differentiated thermal preferences and the optimal division method of the subzones for thermal comfort improvement are recommended to be further investigated. In operation, the thermal preferences and cooling loads could vary in a stochastic manner [13,48]. The evaluation method of the capability of the ventilation system to satisfy differentiated thermal preferences and the optimal division method of the subzones should be able to treat the stochastic variations of the thermal preferences and cooling loads robustly.…”

Section: Discussionmentioning

confidence: 99%

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Subzone control method of stratum ventilation for thermal comfort improvement

Zhang

Cheng

Oladokun

2019

Building and Environment

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S u b z o n e c o n t r ol m e t h o d of s t r a t u m v e n til a tio n fo r t h e r m al c o mfo r t i m p r ov e m e n t Z h a n g , S, C h e n g, Y, Ol a d o k u n, M O a n d Lin, Z h t t p:// dx. d oi.o r g/ 1 0. 1 0 1 6/j.b uild e nv.2 0 1 8. 1 1. 0 4 1 Ti t l e S u b z o n e c o n t r ol m e t h o d of s t r a t u m v e n til a tio n fo r t h e r m al c o mfo r t i m p r ov e m e n t A u t h o r s Z h a n g, S, C h e n g , Y, Ol a d o k u n, M O a n d Lin, Z Typ e Articl e U RL This ve r sio n is a v ail a bl e a t : h t t p:// u sir.s alfo r d. a c. u k/id/ e p ri n t/ 5 3 1 0 1/ P u b l i s h e d D a t e 2 0 1 9 U SIR is a di git al c oll e c tio n of t h e r e s e a r c h o u t p u t of t h e U niv e r si ty of S alfo r d. W h e r e c o py ri g h t p e r mi t s, full t e x t m a t e ri al h el d in t h e r e p o si to ry is m a d e fr e ely a v ail a bl e o nli n e a n d c a n b e r e a d , d o w nlo a d e d a n d c o pi e d fo r n o nc o m m e r ci al p riv a t e s t u dy o r r e s e a r c h p u r p o s e s . Pl e a s e c h e c k t h e m a n u s c ri p t fo r a n y fu r t h e r c o py ri g h t r e s t ri c tio n s. Fo r m o r e info r m a tio n, in cl u di n g o u r p olicy a n d s u b mi s sio n p r o c e d u r e , pl e a s e c o n t a c t t h e R e p o si to ry Te a m a t: u si r@ s alfo r d. a c. u k . AbstractThe conventional control method of a collective ventilation (e.g., stratum ventilation) controls the averaged thermal environment in the occupied zone to satisfy the averaged thermal preference of a group of occupants. However, the averaged thermal environment in the occupied zone is not the same as the microclimates of the occupants, because the thermal environment in the occupied zone is not absolutely uniform. Moreover, the averaged thermal preference of the occupants could deviate from the individual thermal preferences, because the occupants could have different individual thermal preferences. This study proposes a subzone control method for stratum ventilation to improve thermal comfort. The proposed method divides the occupied zone into subzones, and controls the microclimates of the subzones to satisfy the thermal preferences of the respective subzones. Experiments in a stratum-ventilated classroom are conducted to model and validate the Predicted Mean Votes (PMVs) of the subzones, with a mean absolute error between 0.05 scale and 0.14 scale. Using the PMV models, the supply air parameters are optimized to minimize the deviation between the PMVs of the subzones and the respective thermal preferences. Case studies show that the proposed method can fulfill the thermal

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Comparative Analysis of the Energy Demand by Standard Method and the TRNSYS-Weather Data Method

Ilie

Vişa

2017

Springer Proceedings in Energy

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A multi-criterion renewable energy system design optimization for net zero energy buildings under uncertainties

Cited by 146 publications

References 26 publications

Optimization on fresh outdoor air ratio of air conditioning system with stratum ventilation for both targeted indoor air quality and maximal energy saving

Optimization on fresh outdoor air ratio of air conditioning system with stratum ventilation for both targeted indoor air quality and maximal energy saving

Subzone control method of stratum ventilation for thermal comfort improvement

Comparative Analysis of the Energy Demand by Standard Method and the TRNSYS-Weather Data Method

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