With the development of metering technologies, data mining techniques such as machine learning have been increasingly used for prediction building energy consumption. Among various methods, KNN algorithm was implemented to predict hourly consumption community buildings composed several different types buildings. Based on input set, 10 similar patterns each season in historic sets were chosen, and these averaged. The results analyzed quantitatively qualitatively. summer fall close data, while...

Improving indoor air quality (IAQ) in daycare centers is essential due to children’s vulnerability pollutants and prolonged exposure. To address these challenges, energy recovery ventilators (ERVs) with varying filtration efficiencies were evaluated through field measurements CONTAM simulations. Baseline assessments of CO2 PM2.5 levels revealed significant impacts from outdoor pollutant infiltration. ERVs successfully reduced concentrations, maintaining below 1000 ppm during most occupancy...

After the COVID-19 pandemic in South Korea, residential buildings are equipped with an energy recovery ventilator for ventilation and building efficiency. During summer, it is required to operate both ERV system air conditioners maintain thermal comfort as well ensure indoor quality. The efficiency of can be varied by various layouts inlet outlet vents. Moreover, cooling wasted through exhaust system. Considering this, present study assessed applying supply systems different temperatures...

As the time spent by people indoors continues to significantly increase, much attention has been paid indoor air quality. While many IAQ studies have conducted through field measurements, use of data-driven techniques such as machine learning increasingly used for prediction pollutants. For present study, concentrations pollutants CO2, PM2.5, and VOCs in child daycare centers were predicted using an artificial neural network model with three different training algorithms including...

Indoor air quality can be influenced by various indoor activities. The pollutants generated cooking activities cause severe risks to occupants’ health in residential buildings. present study conducted field experiments measure associated with 29 Due an open plan Korean buildings, the emission of was measured kitchen and living room. Focusing on aldehydes, levels for methods such as grilling, frying, boiling were analyzed. As a result, formaldehyde, acetaldehyde, propionaldehyde highly...

For evaluating the thermal comfort of occupants, human factors such as clothing insulation (clo level) and metabolic rate (Met) are one important parameters well environmental air temperature (Ta) humidity. In general, a fixed clo level is commonly used for controlling heating, ventilation, conditioning using index. However, can lead to errors estimating because levels occupants vary with time by season. The present study assesses method predicting thermoregulation model an infrared (IR)...

In Saudi Arabia, residential buildings are one of the major contributors to total energy consumption. Even though there abundant natural resources, it is somewhat difficult apply them building designs, as design variables, due slow progress and private issues in Arabia. Thus, present study demonstrated development sustainable by examining daylighting performance with variables. Focusing on system, variables were chosen, including window-to-wall ratios (WWR), external shading devices, types...

As one of the main businesses in Jeju-do South Korea, specialized local products are grown greenhouses. For greenhouse farming, it is preferable to use geothermal heat pump systems for energy conservation because stable temperature ground. In same manner, pumps using underground air recommended farming since can easily be obtained from porous volcanic rocks Jeju-do. However, direct usage not feasible planting or livestock care relatively humid and its low. present study, heating performance...

Accounting for more than half of buildings in South Korea, the energy consumed by residential has become a main concern and cooing demand rapidly increased. To reduce consumption, several passive active design strategies have generally been applied. However, there an increasing high window-to-wall ratios buildings, it is imperative to block sunlight into building effectively. Focusing on reduction cooling consumption building, present study assessed daylight performance shading devices....

In general, a double-skin façade has been used to reduce energy consumption as well improve thermal performance in buildings buffer space between indoors and outdoors. The goal of this study is undertake pre-normative research provide information for developing comprehensive system under the climatic condition Saudi Arabia. To pursue goal, characteristics associated with are identified. addition, impact various configurations on façades evaluated weather situation Computational models...

Building insulation materials has a significant impact on building energy consumptions. However, conventional are easily flammable and can cause fire disasters in buildings. Therefore, it is important to select appropriate for efficiency safety Vacuum Insulation Panels (VIPs) increasingly applied insulation. Considering this, the present study investigates performance of VIPs with design alternatives, such as window systems, infiltration rates, etc., by using simulation. Among various VIPs,...

The study presented an approach to accomplish the nearly zero-energy school building through assessment of energy and economic performance design solutions with renewable systems. For use in building, was mainly consumed by artificial lighting analysis two years’ consumption. Available passive active were adopted improve efficiency each solution analyzed. To achieve remaining offset solar PV panels. Comparing payback time for systems, most appropriate selected under mild climates. In sum,...

Residential buildings in South Korea have equipped an energy recovery ventilation (ERV) system to improve efficiency as well dilute indoor air pollution. While most studies focused on the of exchange or performance ERV itself, can be improved by proper location inlet and outlet vents. For present study, vents was investigated using CFD simulation. By varying locations vents, airflow distributions age were assessed. In addition, effectiveness analyzed mean quantitatively. As a result, higher...

In South Korea, radiant floor heating has been used from old housing to the recently constructed residential buildings, which is called “Ondol”. The Ondol system generally a water-based and it uses hot water as heat medium provided by boilers fueled natural gas. With great effort reduce greenhouse gas emissions, electric panels have increasingly applied recent buildings for heating. While prefab were developed with demand dry construction method, information about not sufficient. For present...

The aim of the present study was to investigate thermal performance window systems using full-scale measurements and simulation tools. A chamber installed on balcony an apartment control temperatures which can create condensation interior surfaces systems. process carefully scrutinized when outdoor indoor temperature relative humidity ranged from −15 °C −20 °C, 23 24 50% 65%, respectively. results these investigations were analyzed determine how moisture is influenced by changing...

The atrium is one of the most preferred design features in modern large buildings, but thermal performance an space a growing concern. Computational fluid dynamics (CFD) and field measurements have usually been employed to assess complex atrium. However, these conventional approaches require significant effort. This paper presents simplified approach employing response factor method for prediction temperature distribution mechanically ventilated Full scale were performed existing building...

Most perimeter zones are thermally susceptible to the variation of outdoor conditions, especially due a large amount heat gain through glazing. To reduce gain, spandrel panels generally installed in curtain walls commercial buildings. For present study, thermal performance an office located zone was investigated using Computational Fluid Dynamics (CFD) simulation. By varying panel heights, comfort assessed quantitatively. The findings suggest that when height 0 m, highest temperature...