Energy Modeling and Chillers Sizing of HVAC System for a Hotel Building

Wang, Fujen; Lin, Hung-Wen; Tu, Wei-Da; Wang, Yuyu; Huang, Y.J.

doi:10.1016/j.proeng.2015.09.161

Cited by 20 publications

(6 citation statements)

References 8 publications

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“…Existing scientific work on HVAC sizing and performance mainly focus on how to right-size or to identify and prevent oversizing related to chillers, plants or rooftop units such as (Djunaedy et al 2011, Gorter 2012, Wang et al 2015. Studies focusing on AHU rightsizing and oversizing such as (EPA 1995, Crozier 2000, Thomas and Moller 2006 evaluate the sizing and performance level based on airflow and energy-efficiency, however they do not include an evaluation on the thermal conditions and IAQ even though they mention how these are affected by grossly oversized AHUs.…”

Section: Contribution To Existing Research On Hvac Performance and Sizing Evaluationmentioning

confidence: 99%

Using long-term measurements of airflow, electrical power, indoor temperature, and CO ₂ -concentration for evaluating sizing and performance of an all-air HVAC system in an office building - a case study

Khan

Kolařík

Hviid

et al. 2020

Science and Technology for the Built Environment

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Monitoring performance of heating, ventilation and air-conditioning (HVAC) during building operation enables to evaluate the appropriateness of the system's design. Such insights can help to reduce energy consumption while ensuring satisfying indoor conditions in the monitored building. Additionally, such insight can help to improve future HVAC design. The aim of this paper is to present a case study demonstrating how HVAC engineers can evaluate whether the monitored air-handling units (AHUs) were appropriately sized and performed as intended based on design requirements regarding energy-efficiency, thermal conditions and indoor air quality (IAQ). Three months of measurements of airflow, electrical power, indoor temperature and CO 2 -concentrations were collected from an office building with six AHUs. The results showed that three of the AHUs were appropriately sized and satisfied the thermal condition, IAQ and energy-efficiency requirements. The remaining three AHUs were apparently appropriately sized and satisfied IAQ requirements, but they did not satisfy the required energy-efficiency and thermal conditions. The applied approach seemed to be suitable for supporting building operating managers for on-going performance monitoring as it was able to identify discrepancies from intended performance. But it remains the task for the operating personnel to identify the cause of the identified discrepancies.

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Section: Contribution To Existing Research On Hvac Performance and Sizing Evaluationmentioning

confidence: 99%

Using long-term measurements of airflow, electrical power, indoor temperature, and CO ₂ -concentration for evaluating sizing and performance of an all-air HVAC system in an office building - a case study

Khan

Kolařík

Hviid

et al. 2020

Science and Technology for the Built Environment

View full text Add to dashboard Cite

show abstract

“…However, due to the complexity of the situation, approaching the optimization of energy use in all facilities is fairly difficult. The use of accessible energy modeling to analyze energy use for whole-building simulations is generally acknowledged to be the most successful approach [3].…”

Section: Introductionmentioning

confidence: 99%

Energy Consumption Analysis for Coupling Air Conditioners and Cold Storage Showcase Equipment in a Convenience Store

et al. 2022

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The energy use intensity (EUI) of convenience stores was substantially higher than that of office buildings and hotels, due to a compact footprint but a high density of equipment yielded a higher EUI. As a result, it is critical to assess and maintain the state of the convenience store in order to obtain a lower EUI and reduce energy consumption. This study utilizes a convenience store to evaluate energy consumption and perform a CFD simulation to see how the environment influences by cold storage showcase (CSS) equipment. On the basis of field testing and on-site web-based monitoring data, a survey of baseline information through data collecting and energy benchmarking data has been provided and extensively examined. According to energy monitoring, the convenience store’s highest electricity use is 23,055 kWh in June, and the lowest power consumption is 15,216 kWh in February. The CFD simulation results revealed that the temperature near the CSS can be 3–5 °C lower than in other regions. The temperature nearby return air will be lower as a result of the low-temperature air impacts from CSS. The AC sensor detects that the environment has met the indoor requirements and performs the load reduction operation. After adjusting the AC temperature, it is discovered that the unit is unable to attain the appropriate temperature. Energy consumption can be reduced, resulting in more energy-efficient AC and CSS operations. Furthermore, the CSS’s cold air effect might be taken advantage of by raising the AC-2 temperature set point to generate energy savings.

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“…A large amount of building energy consumption is contributed by its cooling system. Optimizing the capacity of the cooling system by energy modeling can reduce the power consumption and cost of operation [15][16][17]. Yu et al [18] concluded that enabling occupants' individual control in decentralized systems can improve comfort and save energy when compared to centralized systems.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simulation and Analysis of a Factory Building's Energy Consumption Using eQuest Software

2021

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Considering the global energy consumption, it is imperative to focus on energyefficient buildings. For a multi-storey factory building case study, the base case and design case energy consumption were compared with the actual one. The simulation proved that the design case values were less than that of the base case, and 18.9 % of energy saving could be achieved. The design case value was compared with the actual value and the simulation accuracy was assessed in terms of mean base error and cumulative root mean square error. A comparison was done for two conventional heating, ventilation, and air conditioning systems with evaporative cooling pad system, which was found to be both energy-and cost-efficient. A model for integrating the key factors during the construction of an energy-efficient building is suggested.

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Energy Modeling and Chillers Sizing of HVAC System for a Hotel Building

Cited by 20 publications

References 8 publications

Using long-term measurements of airflow, electrical power, indoor temperature, and CO ₂ -concentration for evaluating sizing and performance of an all-air HVAC system in an office building - a case study

Using long-term measurements of airflow, electrical power, indoor temperature, and CO ₂ -concentration for evaluating sizing and performance of an all-air HVAC system in an office building - a case study

Energy Consumption Analysis for Coupling Air Conditioners and Cold Storage Showcase Equipment in a Convenience Store

Simulation and Analysis of a Factory Building's Energy Consumption Using eQuest Software

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Energy Modeling and Chillers Sizing of HVAC System for a Hotel Building

Cited by 20 publications

References 8 publications

Using long-term measurements of airflow, electrical power, indoor temperature, and CO 2 -concentration for evaluating sizing and performance of an all-air HVAC system in an office building - a case study

Using long-term measurements of airflow, electrical power, indoor temperature, and CO 2 -concentration for evaluating sizing and performance of an all-air HVAC system in an office building - a case study

Energy Consumption Analysis for Coupling Air Conditioners and Cold Storage Showcase Equipment in a Convenience Store

Simulation and Analysis of a Factory Building's Energy Consumption Using eQuest Software

Contact Info

Product

Resources

About

Using long-term measurements of airflow, electrical power, indoor temperature, and CO ₂ -concentration for evaluating sizing and performance of an all-air HVAC system in an office building - a case study

Using long-term measurements of airflow, electrical power, indoor temperature, and CO ₂ -concentration for evaluating sizing and performance of an all-air HVAC system in an office building - a case study