Analysis of typical public building energy consumption in northern China

Ma, Hongting; Du, Na; Yu, Shaojie; Lu, Wenqian; Zhang, Zeyu; Deng, Na; Li, Cong

doi:10.1016/j.enbuild.2016.11.037

Cited by 144 publications

(56 citation statements)

References 30 publications

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“…Moreover, air conditioning system is the equipment responsible for the highest energy consumption because of the high temperatures recorded throughout the year. Several authors [44][45][46][47] have reported that air conditioning systems are usually the largest consumers of energy within a building.…”

Section: Discussionmentioning

confidence: 99%

Energy Diagnosis of University Buildings: Renewable Energy Institute from UNAM

et al. 2018

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The purpose of this study has been to conduct an energy diagnosis research of the third level. An energy diagnosis is a tool aimed to seek improvements related to measures of energy efficiency and saving, and environmental conservation as well. These improvements would prove to be relevant for any kind of building. The diagnosis was carried out in 36 university buildings (Renewable Energy Institute—REI) through survey and census; that in order (to identify and) to characterize current patterns of energy consumption and demand, as well as for generating specific strategies towards energy efficiency and saving, for instance the identification of systemic indicators and corrective proposals, and non-financial investment. The results promote the achievement of grand energy efficiency. The task on energy conservation entails the supporting participation of each person who either studies or works in the entity, whereas some other activities require economic stimulus for being implemented. Annual per capita energy consumption in the REI is 40 kWh/person: that is greater than the country’s average consumption rate. The main energy consumption corresponds to Building 3.1 (49% of total energy consumption). This is due to its large concentration of laboratories specialized in renewable energy research and innovation.

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Section: Discussionmentioning

confidence: 99%

Energy Diagnosis of University Buildings: Renewable Energy Institute from UNAM

et al. 2018

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“…First, the thermal design parameters of the enclosure structure are selected as input variables, and the energy consumption of the building after the design parameter change is simulated using Design-Builder software. en, the sensitivity of building energy consumption to the change in the design parameters is calculated by formula (4). Finally, the sensitivity coefficients of all the parameters are sorted, and the key points of the energy-saving optimization scheme are determined from the design parameters of multiple envelope structures; these factors provide the train of thought and direction for solving the problems.…”

Section: Sensitivity Analysis Methodmentioning

confidence: 99%

“…ere are four types of energy consumption categories in the civil buildings in China: heating energy in northern cities and towns, residential energy in cities and towns, residential energy in rural areas, and the energy consumption of public buildings. In terms of energy consumption per unit area and the total energy consumption, the energy consumption of public buildings ranks first among the four types of buildings [2][3][4]. Public building energy consumption levels in China have been close to those in Europe and the USA.…”

Section: Introductionmentioning

confidence: 99%

Simulation Analysis and Scheme Optimization of Energy Consumption in Public Buildings

Liu

Zou

Chen

et al. 2019

Advances in Civil Engineering

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Under the requirement of energy savings and emission reduction in China, building energy consumption, which occupies a rising proportion of the total energy consumption in society, has become the focus of energy conservation research. Public buildings with a high-energy consumption level have become the most important part of energy conservation research. It is of great practical significance and social value to study energy conservation in large public buildings. In this paper, a large office building is taken as an example. First, a simulation model is constructed by using the energy consumption simulation analysis method, and the reliability of the model is verified by a comparison with the actual energy consumption. Second, based on the model, the thermal design parameters of six building envelope structures, including the external wall heat transfer coefficient, are analyzed in the order of energy-saving sensitivity. Based on the results of the sensitivity analysis, suggestions for each factor are presented. Finally, considering the mutual influence of each parameter on the building energy consumption, the orthogonal design method is used to arrange the test, and the optimal scheme combination of the energy-saving effect is analyzed, which can provide decision support for the energy saving of public building envelopes.

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“…The CAV system was analyzed for purposes of comparison with the energy-conserving system and the conventional VAV system. The CAV always supplies a fixed amount of air to the indoors and adjusts the temperature via heat exchange in the coils within the air conditioner [49,50]. The UFAD system ( Figure 8C) is an air-conditioning method that cools by focusing on the occupied zone, which is the space between the floor surface and a height of approximately 2 m [51,52].…”

Section: Selection Of Hvac System and Simulation Input Conditionsmentioning

confidence: 99%

Detailed Comparison of the Operational Characteristics of Energy-Conserving HVAC Systems during the Cooling Season

2019

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To provide useful information concerning energy-conserving heating, ventilation, and air-conditioning (HVAC) systems, this study used EnergyPlus to analyze in detail their operational characteristics and energy performance. This study also aimed to understand the features of the systems under consideration by investigating the dry-bulb temperature, relative humidity, and airflow rate at major nodes in each system’s schematic. Furthermore, we analyzed the indoor environment created by each HVAC system, as well as examining the cooling energy consumptions and CO2 emissions. The HVAC systems selected for this study are the variable air volume (VAV) commonly used in office buildings (base-case model), constant air volume (CAV), under-floor air distribution (UFAD), and active chilled beam (ACB) with dedicated outdoor air system (DOAS). For the same indoor set-point temperature, the CAV’s supply airflow was the highest, and VAV and UFAD were operated by varying the airflow rate according to the change of the space thermal load. ACB with DOAS was analyzed as being able to perform air conditioning only with the supply airflow constantly fixed at a minimum outdoor air volume. The primary cooling energy was increased by about 23.3% by applying CAV, compared to VAV. When using the UFAD and ACB with DOAS, cooling energy was reduced by 11.3% and 23.1% compared with VAV, respectively.

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Analysis of typical public building energy consumption in northern China

Cited by 144 publications

References 30 publications

Energy Diagnosis of University Buildings: Renewable Energy Institute from UNAM

Energy Diagnosis of University Buildings: Renewable Energy Institute from UNAM

Simulation Analysis and Scheme Optimization of Energy Consumption in Public Buildings

Detailed Comparison of the Operational Characteristics of Energy-Conserving HVAC Systems during the Cooling Season

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