Categories of indoor environmental quality and building energy demand for heating and cooling

2011 ◽  
Vol 4 (2) ◽  
pp. 97-105 ◽  
Author(s):  
Stefano Paolo Corgnati ◽  
Enrico Fabrizio ◽  
Daniela Raimondo ◽  
Marco Filippi
Keyword(s):  
Environmental Quality ◽  
Energy Demand ◽  
Building Energy ◽  
Indoor Environmental Quality ◽  
Heating And Cooling

scholarly journals A European Database of Building Energy Profiles to Support the Design of Ground Source Heat Pumps

Energies ◽  
2019 ◽  
Vol 12 (13) ◽  
pp. 2496 ◽  
Author(s):  
Laura Carnieletto ◽  
Borja Badenes ◽  
Marco Belliardi ◽  
Adriana Bernardi ◽  
Samantha Graci ◽  
...  
Keyword(s):  
Heat Pump ◽  
Energy Demand ◽  
Residential Buildings ◽  
Building Energy ◽  
Heat Pumps ◽  
Climatic Conditions ◽  
Ground Source Heat Pumps ◽  
Heating And Cooling ◽  
Energy Profiles ◽  
Ground Source

The design of ground source heat pumps is a fundamental step to ensure the high energy efficiency of heat pump systems throughout their operating years. To enhance the diffusion of ground source heat pump systems, two different tools are developed in the H2020 research project named, “Cheap GSHPs”: A design tool and a decision support system. In both cases, the energy demand of the buildings may not be calculated by the user. The main input data, to evaluate the size of the borehole heat exchangers, is the building energy demand. This paper presents a methodology to correlate energy demand, building typologies, and climatic conditions for different types of residential buildings. Rather than envelope properties, three insulation levels have been considered in different climatic conditions to set up a database of energy profiles. Analyzing European climatic test reference years, 23 locations have been considered. For each location, the overall energy and the mean hourly monthly energy profiles for heating and cooling have been calculated. Pre-calculated profiles are needed to size generation systems and, in particular, ground source heat pumps. For this reason, correlations based on the degree days for heating and cooling demand have been found in order to generalize the results for different buildings. These correlations depend on the Köppen–Geiger climate scale.

scholarly journals Integrated Lighting Efficiency Analysis in Large Industrial Buildings to Enhance Indoor Environmental Quality

2017 ◽  
Author(s):  
Dusan Katunsky ◽  
Erika Dolnikova ◽  
Saeed Doroudiani
Keyword(s):  
Environmental Quality ◽  
Substantial Part ◽  
Physical Parameters ◽  
Indoor Environmental Quality ◽  
Heating And Cooling ◽  
Industrial Buildings ◽  
Industrial Architecture ◽  
Present Part ◽  
Indoor Lighting

The physical parameters related to indoor lighting in large industrial halls in winter and summer periods were analyzed using in situ measurements and computational methods. Here, we present part of our observations from a comprehensive research on indoor environmental quality of industrial halls with the aims of saving energy and providing a comfortable environment for the workers. The results showed that the procedures used for evaluation of residential or office buildings may not be used for industrial buildings. We also observed that the criteria for occupants’ comforts for indoor industrial buildings may differ from those of other kinds of buildings. Based on these results, an adequate attention is required while designing the industrial buildings. For this reason, appropriate evaluation methods and criteria should be created. Manufacturing halls are integral parts of industrial architecture, including buildings for light industries. Workers spend a substantial part of the time indoor; therefore, it is necessary to pay attention to design, construction, and evaluation of internal spaces of buildings and the occupants’ comfort. The focus must be given particularly to heating and cooling, moisture, and lighting microclimate. We present some observations from evaluation of internal environmental quality of industrial halls with priority on daylighting in combination with the integral lighting.

Building Energy Simulation with On-Site Weather Station

2016 ◽  
Vol 859 ◽  
pp. 88-92 ◽  
Author(s):  
Radu Manescu ◽  
Ioan Valentin Sita ◽  
Petru Dobra
Keyword(s):  
Energy Consumption ◽  
Energy Demand ◽  
Building Energy ◽  
Energy Simulation ◽  
Weather Data ◽  
Building Energy Simulation ◽  
Existing Buildings ◽  
Existing Building ◽  
Simulation Tools ◽  
Heating And Cooling

Energy consumption awareness and reducing consumption are popular topics. Building energy consumption counts for almost a third of the global energy consumption and most of that is used for building heating and cooling. Building energy simulation tools are currently gaining attention and are used for optimizing the design for new and existing buildings. For O&M phase in existing buildings, the multiannual average weather data used in the simulation tools is not suitable for evaluating the performance of the building. In this study an existing building was modeled in EnergyPlus. Real on-site weather data was used for the dynamic simulation for the heating energy demand with the aim of comparing the measured energy consumption with the simulated one. The aim is to develop an early fault detection tool for building management.

A review on indoor environmental quality (IEQ) and energy consumption in building based on occupant behavior

Facilities ◽  
2017 ◽  
Vol 35 (11/12) ◽  
pp. 684-695 ◽  
Author(s):  
Iman Asadi ◽  
Norhayati Mahyuddin ◽  
Payam Shafigh
Keyword(s):  
Energy Consumption ◽  
Human Behavior ◽  
Environmental Quality ◽  
Building Energy ◽  
Simulation Software ◽  
Indoor Environmental Quality ◽  
Occupant Behavior ◽  
Building Energy Consumption ◽  
Content Type ◽  
Behavior Simulation

Purpose The purpose of this paper is to review the concept of occupant behavior and its relation with indoor environmental quality (IEQ) and building energy consumption. The behavior is referred to any direct or indirect action, which is selected by an occupant to manage the unpleasant indoor environmental conditions. Thermal comfort, indoor air quality, aural comfort and visual comfort are the key factors of IEQ evaluation. Human behavior significantly interacts with energy consumption in buildings. Design/methodology/approach Each IEQ parameter was reviewed separately and the overall IEQ acceptance was considered. In addition, this paper reviews the methods that were used to measure and simulate the IEQ factors, energy consumption and human behavior. Finally, the lack of knowledge in this field is based on the review demonstrated. Findings Most studies considered one or two IEQ factors to evaluate IEQ acceptance in buildings. Further, weakness of simulating all IEQ factors at the same time is the deficiency of IEQ simulation, based on reviews. In the case of occupant behavior simulation, the uncertainly of human psychological parameter is a drawback to predict behavior. Originality/value Energy consumption, occupant health and productivity are related to IEQ. Human behavior affects building energy consumption directly. Simulation software and methods can predict IEQ factors and human behavior. Therefore, reviewing the existing studies is critical to find new methods for measuring and simulating IEQ, energy consumption and human behavior in buildings.

Energy Efficient Operation of University Hostel Buildings Under Indoor Environmental Quality Requirements

2012 ◽  
Vol 1 (2) ◽  
pp. 96-109 ◽  
Author(s):  
Ahmed A. Medhat A. Fahim ◽  
Essam E. Khalil
Keyword(s):  
Environmental Quality ◽  
Energy Demand ◽  
Immigrant Students ◽  
Cooling Capacity ◽  
Indoor Environmental Quality ◽  
Efficient Operation ◽  
Energy Demands ◽  
Indoor Conditions ◽  
Occupation Rate

This paper investigates the influence of Indoor Environmental Quality [IEQ] requirements associated with occupation regimes on the criterion of energy demands for Heating, Ventilating and Air-Conditioning (HVAC) central systems installed in Cairo, Egypt. This paper focuses on the effects of occupation rate profiles with IEQ thermal parameters such as air dry-bulb temperatures and local air velocities. It is applied as a case study “10-Stories Hostel of 6000 m2 built-up area” that is utilized by immigrant students that migrate to Cairo for their University studies. They are termed here in this work as Egyptian Citizens [EC]. The occupation rate schedules and operation profiles for each source of heat inside space shall be incorporated to simulate the reality. These profiles and schedules should be added to the local energy code as a guideline for designers. Although in this case study the obtained results from simulation program match the total actual energy bills, sometimes, with multi-use apartments additional factors. The effect of Effective Temperatures [ET*] (temperature for constant thermal sensations) is vital as it can lead to reduce the cooling capacity by increasing the room temperature against indoor relative humidity for the same comfort sensation. These two concepts will save on the project total energy demand, in addition to introducing new design criteria for acceptable indoor conditions.

scholarly journals A Methodology to Investigate the Deviations between Simple and Detailed Dynamic Methods for the Building Energy Performance Assessment

Energies ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 6217
Author(s):  
Ilaria Ballarini ◽  
Andrea Costantino ◽  
Enrico Fabrizio ◽  
Vincenzo Corrado
Keyword(s):  
Energy Demand ◽  
Dynamic Models ◽  
Building Energy ◽  
Energy Performance ◽  
Transfer Coefficients ◽  
Study Approach ◽  
Heat Transfer Coefficients ◽  
Heating And Cooling ◽  
Cooling Loads ◽  
Physical Phenomena

The research investigates the validity of the simple hourly method, as introduced by the EN ISO 52016-1 standard, for the assessment of the building energy demand for heating and cooling, by comparing it with a detailed dynamic model (EnergyPlus). A new methodology is provided to identify and quantify the causes of deviations between the models. It consists in the split of the contributions of the air heat balance (AHB) equation by dynamic driving force, and in the adoption of consistency options of the modeling parameters related to specific physical phenomena. A case study approach is adopted in the article to achieve the research objective. The results show that the deviations in the heating and cooling loads between the two calculation methods can be mainly ascribed to the use of different surface heat transfer coefficients, and to a different modeling of the extra thermal radiation to the sky. Providing a methodology to validate the calculation method, this work is intended to contribute to the enhancement of the use of simple dynamic models and to the improvement of the standardization activity.

scholarly journals Building Energy an Simulation Model for Analyzing Energy Saving Options of Multi-Span Greenhouses

2020 ◽  
Vol 10 (19) ◽  
pp. 6884
Author(s):  
Adnan Rasheed ◽  
Cheul Soon Kwak ◽  
Hyeon Tae Kim ◽  
Hyun Woo Lee
Keyword(s):  
Energy Demand ◽  
Natural Ventilation ◽  
Thermal Environment ◽  
Dynamic Control ◽  
Weather Conditions ◽  
Building Energy ◽  
Design Parameters ◽  
Heating And Cooling ◽  
North Wall ◽  
Local Weather

This study proposes a multi-span greenhouse Building Energy Simulation (BES) model using a Transient System Simulation (TRNSYS)-18 program. A detailed BES model was developed and validated to simulate the thermal environment in the greenhouse under different design parameters for the multi-span greenhouse. Validation of the model was carried out by comparing the results from computed and experimental greenhouse internal temperatures. The statistical analyses produced an R2 value of 0.84, a root mean square error (RMSE) value of 1.8 °C, and a relative (r)RMSE value of 6.7%, showing good agreement between computed and experimental results. The validated proposed BES model was used to evaluate the effect of multi-span greenhouse design parameters including thermal screens, number of screens, orientation, covering materials, double glazing, north-wall insulation, roof geometry, and natural ventilation, on the annual energy demand of the greenhouse, subjected to Taean Gun (latitude 36.88° N, longitude 126.24° E), Chungcheongnam-do, South Korea winter and summer season weather conditions. Additionally, the proposed BES model is capable of evaluating multi-span greenhouse design parameters with daily and seasonal dynamic control of thermal and shading screens, natural ventilation, as well as heating and cooling set-points. The TRNSYS 18 program proved to be highly flexible for carrying out simulations under local weather conditions and user-defined design and control of the greenhouse. The statistical analysis of validated results should encourage the adoption of the proposed model when the underlying aim is to evaluate the design parameters of multi-span greenhouses considering local weather conditions and specific needs.

Heating and cooling building energy demand evaluation; a simplified model and a modified degree days approach

2014 ◽  
Vol 128 ◽  
pp. 217-229 ◽  
Author(s):  
Mattia De Rosa ◽  
Vincenzo Bianco ◽  
Federico Scarpa ◽  
Luca A. Tagliafico
Keyword(s):  
Energy Demand ◽  
Building Energy ◽  
Simplified Model ◽  
Degree Days ◽  
Heating And Cooling
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