Optimal and robust control of outdoor ventilation airflow rate for improving energy efficiency and IAQ

Wang, Shengwei; Xu, Xin

doi:10.1016/j.buildenv.2004.01.033

Cited by 47 publications

(19 citation statements)

References 16 publications

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“…Studies on CO 2 ‐based DCV have focused on the technical implementation (Mui & Chan, 2006; Schell, 1998) and energy savings (Chao & Hu, 2004; Hendricks, Drayer, & Lee, 2006; Mysen et al, 2005; Pavlovas, 2004; Wachenfeldt et al, 2007; Wang & Xu, 2004). There is very scant evidence from empirical studies about how CO 2 ‐based DCV affects the perceptions and satisfaction of building users.…”

Section: Discussionmentioning

confidence: 99%

“…However, it is important to understand the impact of this technology on building users whose health and well‐being should not be compromised to achieve energy efficiency (USGBC, 2009), especially considering that the energy efficiency–IAQ dilemma is a well‐known problem in energy‐efficient building design (Becker, Goldberger, & Paciuk, 2007). On the other hand, studies on DCV and its impact have demonstrated that the DCV strategy can improve the IAQ (Chao & Hu, 2004; Wang & Xu, 2004).…”

Section: Discussionmentioning

confidence: 99%

“…Such studies focused on topics such as the technical implementation and technologies of CO 2 ‐based DCV and the impact of CO 2 ‐based DCV on IAQ and energy savings. For example, some studies focused on the ventilation control strategy for CO 2 ‐based DCV (Mankibi, 2009; Wang & Xu, 2004) to find a more effective approach.…”

Section: Co2‐based Dcv: Practices Standards and Researchmentioning

confidence: 99%

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CO₂–Based Demand–Controlled Ventilation and Its Implications for Interior Design

Lee

2012

Journal of Interior Design

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CO 2 -based demand-controlled ventilation (DCV) is a ventilation method that resets outdoor air supply rates using CO 2 as an operating parameter (ASHRAE, 2007a). Even though CO 2 itself is not harmful, high levels of CO 2 concentration in indoor environments displace oxygen in the air and can cause a deficiency of oxygen for breathing. The most important aspect of CO 2 in DCV is that it is a good indicator of occupancy in indoor spaces. Therefore, CO 2 is an effective parameter for controlling ventilation based on occupancy level. CO 2 -based DCV has been increasingly used in recent years to optimize the energy consumption in ventilation systems as technological advances make its implementation more feasible and interest in environmentally responsible building design grows. This study aims to provide information about CO 2 -based DCV and suggest implications for interior design practitioners and educators. To achieve this purpose, this study reviewed previous studies and examined the current practices in CO 2 -based DCV in order to suggest guidelines for CO 2 -based DCV implementation for interior designers. The guidelines focused on proper CO 2 sensor location design, taking into consideration the activities and other equipment in the room. In addition, a study of CO 2 -based DCV in the lecture halls of a university campus was conducted. Physical measurements were done in the lecture halls, and trends data were collected from the university's facility management department to compare the measurements. A perceived indoor environmental quality survey was also done to explore the occupants' responses about CO 2 -based DCV.This study aims to provide information on CO 2 -based demand-controlled ventilation (DCV), an emerging technology for environmentally responsible interior design, in order to help interior designers understand the technology and its impact on building users.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Co2‐based Dcv: Practices Standards and Researchmentioning

confidence: 99%

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CO₂–Based Demand–Controlled Ventilation and Its Implications for Interior Design

Lee

2012

Journal of Interior Design

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“…Three kinds of management actions are proposed, the first one consists in to avoid an excessive cooling of the building during winter conditions, the second one consists in to increase in 1ºC the comfort temperature during summer and the last one consists in free-cooling by ventilation when ambient temperature is similar to the comfort temperature [5,6].…”

Section: Improvement Actions To Management Energymentioning

confidence: 99%

Prediction of the thermal behaviour of an office building using TRNSYS with proposal and evaluation of improvement actions.

Pujol-Nadal¹,

Martínez-Moll

Moià-Pol³

2024

RE&PQJ

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Abstract.The most important decisions that affect the thermal behaviour of buildings are taken in the initial stages of design. Design evaluation may be supported by the results of building simulation. The aim of this paper is to predict the thermal behaviour of an office building with TRNSYS and to propose architectonical and management improvement actions. These improvements are formulated to solve one design problem of this building. The results shows that models in TRNSYS are a good system to simulate the reality and they can represent the different scenarios to evaluate energy and economic savings in short period of time and without spend the money. The best solutions are the ones who are tough for the all year with all the conditions, analyzing the life cycle and the savings in a medium-long period of time; it can reach an energy saving of 33%. The calculations show that it's possible to reduce 33% of cooling energy with free-cooling ventilation and an energy saving of 20% increasing 1ºC the comfort temperature during summer.

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“…They reported that the change of velocity has more obvious effect than that of temperature on energy saving, and under air supply system could improve the temperature distribution to obtain a good energy saving effect. Al-Rabghi [6] and Wang and Xu [7] used outdoor air for cooling, which can decrease 30% energy consumption of air conditioning system. El-Baky and Mohamed [8] stated that the incoming fresh air could be cooled down by the application of heat pipe exchanger between two streams of fresh and return air in an air conditioning system.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation and economic analysis of gravity heat pipe exchanger applied in communication base station

et al. 2017

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Optimal and robust control of outdoor ventilation airflow rate for improving energy efficiency and IAQ

Cited by 47 publications

References 16 publications

CO₂–Based Demand–Controlled Ventilation and Its Implications for Interior Design

CO₂–Based Demand–Controlled Ventilation and Its Implications for Interior Design

Prediction of the thermal behaviour of an office building using TRNSYS with proposal and evaluation of improvement actions.

Experimental investigation and economic analysis of gravity heat pipe exchanger applied in communication base station

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Optimal and robust control of outdoor ventilation airflow rate for improving energy efficiency and IAQ

Cited by 47 publications

References 16 publications

CO2–Based Demand–Controlled Ventilation and Its Implications for Interior Design

CO2–Based Demand–Controlled Ventilation and Its Implications for Interior Design

Prediction of the thermal behaviour of an office building using TRNSYS with proposal and evaluation of improvement actions.

Experimental investigation and economic analysis of gravity heat pipe exchanger applied in communication base station

Contact Info

Product

Resources

About

CO₂–Based Demand–Controlled Ventilation and Its Implications for Interior Design

CO₂–Based Demand–Controlled Ventilation and Its Implications for Interior Design