The Energy Resources Center at the University of Illinois at Chicago conducted an energy assessment of the John G. Shedd Aquarium and Oceanarium to increase the energy efficiency of the facility, while decreasing the operating costs. Part of this effort included determining the feasibility of implementing a cogeneration system as part of the detailed energy assessment for the facility.
This paper describes the development of a design tool for the calculation of the thermal energy potential of a so-called asphalt collector. Two types of numerical models have been developed and validated against experimental results from a full-scale test-site. The validation showed to be a tedious procedure due to the complexity of the full-scale testing of this type of systems.
The paper describes the use of the theory of tolerances in thermal network models that are built as electric circuits. A principle of the method and main equations are given. A calculation of new values of model parameters is based on the assessment of relative sensitivities of model elements. The method is explained in a case study where thermal comfort is analysed in a designed office building in summer. Tolerances make possible to quickly find a new parameter value for the desired air temperature decrease.
The design for the new Federal Building for San Francisco includes an office tower that is to be naturally ventilated. Each floor is designed to be cross-ventilated, through upper windows that are controlled by the building management system (BMS). Users have control over lower windows, which can be as much as 50% of the total openable area. There are significant differences in the performance and the control of the windward and leeward sides of the building, and separate monitoring and control strategies are determined for each side.
DElight is a simulation engine for daylight and electric lighting system analysis in buildings. DElight calculates interior illuminance levels from daylight, and the subsequent contribution required from electric lighting to meet a desired interior illuminance. DElight has been specifically designed to integrate with a building thermal simulation on a timestep basis, for whole-building analysis. This paper describes the simulation methods used in DElight and some of the key details of software implementation.
The objective of this paper is to model the double skin façade in order to determine the thermal and flow performance and to find out how the façade should be combined with the HVAC system inside of the building. In order to analyze these aspects a simulation model of the double skin façade was built and validated with the use of the test facilities and a real office building. Models of different configurations were tested and validated.
As part of the application of optimal control to smart façade systems (SFS) with motorized Venetian blinds inside the glass enclosed cavity, we investigate the rapid determination of daylighting quantity and quality obtainable from these systems. This paper proposes a set of daylight performance indicators to assess smart façades or similar systems and discusses real-time daylighting optmization.
A method of simulating the interaction between an architectural environment and human action in the environment is described. The computational model is composed of a model for building simulation, a model for action simulation, and a model to mediate the simulation models. This model is being developed to find the environmentally symbiotic actions and the knowledge and beliefs that people are encouraged to acquire to perform such actions. There might be no room in the majority of traditional simulation to model an occupant as the individual that has desire, belief, and intention.
There is a growing need for more complex control of ventilation systems to satisfy energy and environmental issues. SIMBAD Toolbox (SIMulator of Buildings And Devices), developed in the SIMULINK graphical environment is a library of HVAC components models that is used in the field of control of HVAC system. Currently, it deals mainly with heating/cooling systems.
The necessity of focus on more large integration of passive concepts for indoor climate conditioning is today a reality. Through this study, a contribution to fill the lack of useful design guidelines for natural ventilation is proposed, in order to develop the passive ventilation systems implementation. Besides a methodological approach, the paper proposes conceptual tools. The implementation of a natural ventilation strategy includes the envelope building design, the indoor spaces layout and the component sizing. This study explores an architectural classification of ventilation systems.
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