LoginIn order to evaluate energy efficiency of solar hot water systems, a calculation method was developed in this paper that models the unsteady flow and temperature distribution in heat storage tank utilizing Computational Fluid Dynamics (CFD). Compa
IBPSA 1999 - Kyoto, Japan
International Building Simulation Conference 1999, Kyoto, Japan.
Contains 177 papers
Volume content
Numerical prediction of hot water flow and temperature distribution in thermal storage tank | 1999 | English
The research on provision of computational support for building performance analysis has traditionally concentrated on the building design phase. However, computational modeling can also effectively apply to the building operation phase.
This paper decribes a research project to compare, using simulation, the summertime comfort and energy use of naturally ventilated and mixed-mode (limited cooling) UK office buildings.
The LESCOM program using the Response Factor Method developed by the authors was applied to the direct gain system and calculation of fluctuations in room temperature.
Research on calculation method of thermal design load in radiant heating and coolind systems | 1999 | English
A new calculation method is proposed for designing space radiant heating/cooling systems by improving conventional methods of steady and unsteady heat transfer calculation theory which has usually been used for designing of buried pipe floor heati
Studyind thermal performance of split-type air-conditioners at building re-entrant via computer simulation | 1999 | English
The use of split-type air-conditioners in new apartment buildings becomes popular in Hong Kong. One requirement for their effective use is satisfactory heat rejection at the outdoor condensing units.
Linking the comis multi-zone airflow model with the energyplus building energy simulation program | 1999 | English
This paper describes an effort to link the COMIS 3.0 multi-zone airflow model with the EnergyPlus building energy simulation program.
Numerical analysis on the production of cool exergy by making use of heat capacity of building envelopes | 1999 | English
This paper describes a method to calculate cool and warm exergies stored by building envelopes and the result of a case study in terms of passive cooling strategy using the building envelope heat capacity.
Simulation of daylight performance of buildings by the daylight source model based on geostational meteorological satellite images | 1999 | English
This paper introduces a method to simulate the day-light performance of buildings using geostational me- teorological satellite images.
The treatment of convective heat transfer at internal building surfaces has a significant impact on the simulation of heat and air flow.
The optimization of the cogeneration systems (CGS) with the gas engine generator is studied by using the Hamiltonian algorithm (HA).
When some faults take place in a thermal storage HVAC system, changing pattern of the temperature profiles of the thermal storage tank is useful to infer where some faults exist.
Numerical analysis of annual exergy consumption for daylighting, electric-ligthing, and space heating/cooling system | 1999 | English
The purpose of this study is to show explicitly a series of exergy input, output, and consumption for daylighting, electric-lighting, and space heating/cooling system and hence to reveal how daylighting system consumes solar exergy and how electri
RARX algorithm based model development and application to real time data for on-line fault detection in Vav Ahu Units | 1999 | English
Assimilation of cost-effective Fault Detection and Diagnosis (FDD) technique in building management sys- tem can save enormous amount of energy and material.
The purpose of this study is to develop the technique that mixing energy loss is predicted at the time of the air conditioning system design by the simulation.
Internal melt ice-on-coil tank with built-in horizontal tubes is a kind of ice tank used widely. Its discharge process is effected greatly by density different between ice and water.
A reduction in the emissions arising from urban activities demands a combination of energy efficiency measures and a move away from fossil fuel sources.
Study into optimized control for air-conditioning system with floor thermal storage | 1999 | English
Air-conditioning systems with floor thermal storage can be used for cutting peak load and utilizing nighttime electric power.
In the present work, human thermal comfort is investigated within the built environment. The analysis is based on two building thermal simulation models.
The paper discusses the development of a computational thermal simulation engine as an object. The simulation engine utilizes Transfer Function (TF) Algorithms where all TF procedures have been implemented.