English

This paper investigates the possibility of integrating thermal energy storage to the hot side of LiBr/H2O absorptioncooling system to cover 100% of peak cooling load for a three bedroom house on the hottest summer day in Cardiff, Wales. A shell and tube experimental systemwas designed to conduct charging and discharging experiments using Erythritol (melting point 117.7C) as a phase change material, considered to have the highestenergy density in the temperature range investigated (90C to 120C). The results show that ?

This paper presents the results of a monitoring study carried out in the city of Adelaide, Australia, whose primaryaim was to calibrate a model capable of predicting air temperature in an urban street canyon for extended periods in a variety of weather conditions, on the basis of meteorological time series recorded at an open site exposed to the same meso-scale conditions (Erell and Williamson, 2006).

One of the significant threats for buildings is the possibility of changes in the building materials’ properties because of the penetration and residence of moisture it them. In the case of insulating materials such damages may initially have an energy co

Daylighting control systems have quite high potential to reduce building’s energy consumption and peak demand. Despite this potential, reported poor performance, didn’t allow substantial increase in their installation rates. Thus during design stage, is e

In idyllic Athens of the 5th century B.C.

For many reasons building simulation programs are still not recognized as useful design support tools to the same extent as Computer-Aided Design (CAD) or cost-estimating software. There is a strong perception that simulations are time consuming, costly, slow and require expensive or specialized equipment and knowledge that increase design costs. Additionally, simplifications applied to model description, algorithm inaccuracy, or deviations inherent to weather data treatment methods result in poor matches between measurements and predictions, which decrease confidence in obtained results.

This paper objective is to analyze by simulations, the thermal comfort and energy consumption when using a radiant cooling ceiling. For this study we have used the simulation energy tool called Trnsys in order to simulatethe system for an office building. Sensible and latent loads were simulated in the office representing a real day situation. Knowing that the cooling system is sensibleto the risk of condensation a control-system was used during the simulations to completely avoid this risk.

The heating system of the bioclimatic building of CRES comprises the entire heating plant including a solar assistedheat pump, the Solar Air Collectors (SAC) as well as the heat distribution system (comprising a fan coil unit network).

Since recent years cooling demand in office buildings has tremendously increased due to higher internal heat production of equipment, lighting and higher thermal comfort requirements. Classical cooling machines needs a lot of electricity to cover these high demands when primary energy factors are taken into consideration. The use of vertical borehole heat exchangers (BHEs) in combination with a ground source heat pump (GSHP) reduces the energy consumption for the office building. The optimum number of vertical borehole heat exchangers is simulated.

This document describes the rehabilitation of the GeneralSecretariat Information Systems (GSIS building) and the description of the energy measures that were implemented aiming at the improvement of the buildingenergy performance and the indoor environmental conditions.