Double skin façades – cavity and exterior openings dimensions for saving energy on Mediterranean climate

Taking into account Mediterranean climate particularities for Barcelona, Spain, a whole year study using TAS simulation software was carried out for a Double Skin Façade corporative office building. It is a typical office building with an extended working hours schedule for acclimatization.

Simulations of low-energy building in European project an example in Lyon, France

The Lyon Confluence project is an actual urban planning operation of Lyon agglomeration. It is part of a global sustainable development process, mixing economic development, social equity and preservation of natural resources.

The feasibility of internal combustion engine based cogeneration in residential applications

An economic and environmental analysis on residential internal combustion engine (ICE) based cogeneration in Canada was performed. Information from three publicly available databases was used to model four houses to be used in simulation. One house per Canadian region was chosen and modeled in ESP-r. Annual simulations using the existing space and domestic hot water heating equipment were performed and these base case results were compared to the results using the ICE based cogeneration system.

Utilizing building energy simulation to improve process load heat reclamation for a multi-sport athletics venue

Large, multi-use sports and recreational facilities provide a unique, yet challenging, opportunity for energy conservation due to their large process loads. The proposed paper describes the use of building simulation to aid in mechanical system and architectural design to improve heat recovery from process heat generation to satisfy building loads. The focus of this study is a recreational facility that consists of an NHL-size ice arena, 8-sheet curling rink, a gymnasium, change and restrooms, offices, library, fitness studios, a large glazed atrium, as well as 50 metre lap, leisure, outdoo

Headquarters of the comisión nacional del mercado de valores. Double façade simulation study

Nowadays, the use of translucent or transparent façades as lining of another façade is increasing.

Increased Natural Ventilation Flow Rates through Ventilation Shafts

Buoyancy-driven natural ventilation in ventilation shafts is investigated with a small scale physical experiment within a duct and CFD simulations of an office building. For a fixed exhaust opening, smaller shafts lead to higher flow rates in upper floors of a multi-storey building with a shared ventilation shaft. These higher flow rates are caused by increased vertical momentum within the smaller shafts that induce flow through upper floors, an effect referred to as the “ejector effect”.

Future climatic effect on building refurbishment using ventilation for cooling: A case study

This paper presents the effect of specific future climate changes scenarios on the resilience of the refurbishment of a 1960s office building in suburban London. A model of the building was created and simulated using IESVE to predict current energy consumption calibrated with operational energy data. Energy efficient improvements were incorporated which mainly consist of improving the insulation and air-tightness of external envelope, reducing solar and internal gain and utilising natural ventilation during the day and night for improving thermal comfort in the summer.

Building simulation on utilization of roof window in detached house by using cross-ventilation

The effects of roof window on ventilation flow rates and reduction of cooling loads in densely populated areas were investigated by using building simulations. In May of the intermediate season, when utilizing roof window, the cumulative number of air exchanges increased by 9 % to 12 % compared to that when the windows at side walls remained open only during the daytime. When the building coverage ratio increased from 0 % to 20 %, the cumulative number of air exchanges decreased and the cumulative cooling loads increased.

Indoor Environment and Energy Use in Historic Buildings - Comparing Survey Results with Measurements and Simulations

Increasing demand for energy efficiency places new requirements on energy use in historic buildings. Efficient energy use is essential if a historic building is to be used and preserved, especially buildings with conventional uses such as residential buildings and offices. This paper presents results which combine energy auditing with building energy simulation and an indoor environment survey among the occupants of the building. Both when comparing simulations with measurements as well as with survey results good agreement was found.

An Energy Efficient Air Conditioning System using Displacement Ventilation and Chilled Ceiling for Modern Office Buildings

Thermal comfort and indoor air quality (IAQ) play a vital role in creating a pleasant and healthier indoor environment for occupants. The supply air conditions and the concentration of CO2 contaminant present in the supply air can decide the comfort level and purity of air in indoor environments. In this study, an effort was made to investigate the combined effect of a chilled ceiling and displacement ventilation (CC-DV) air conditioning (A/C) system that would possibly achieve good thermal comfort and IAQ in a proposed office building subjected to hot and humid climatic conditions.