The Clathrate Hydrate Slurry (CHS) of Tetra-n-Butyl-Ammonium Bromide (TBAB) comes into being under normal atmosphere when aqueous TBAB solution is cooled to 5-12 . It is a kind of high-density latent-heattransportation medium. CHS of TBAB has far higher cold-loading density than that water does, and can be transported easily through pipeline. So it can save the circulating pump power, and isvery promising to apply TBAB CHS into central air-conditioning or district coolingsystems as a new secondary refrigerant. In this paper, the pipe flow experiments of TBAB CHS are carried out.

This paper presents the results of a casestudy inLowerNgau Tau Kok Estatein Hongkong, whichtry to find the relationship between exterior environmental comfort and residentsbehaviors, especially for an elder community. Filed thermal parameters measurement, observation and interviewon residentsbehaviorsand some simulation about wind and building shadoware conducted.

The paper reports on a series of short projects undertaken in the course of the 2006-07 academic year as part of the AA School’s Masters Programme in Sustainable Environmental Design. The objective was to explore the architectural potential of adaptive co

Investigationofventilationmeasurement methodwas carried out in a full-scale test house. The aim of this study was to examine the ventilation rate via human expiration. The adopted method is able to measure multi-zone airflow rates. Airflow rate between rooms was monitoredand the outdoor airflow rate was measured by using the constant concentration tracer gases. The rate of outdoor airflow entering the house and the airflow rate between the rooms were estimated by the ventilation measurement method via human expiration based on system identification theory.

Illuminance and daylight availability are important parametersin daylighting design for passive, low energy architecture. In Malaysia, the only climatic parameter that can be used for determining daylight availability is global solar irradiation, which is measured at major meteorologicalstations around the country. However, it is possible to estimate the global illuminance from global solar irradiation data if the global luminous efficacy is known.

“Energy Towers” is the name of a technology which was developed at the Technion--Israel Institute of Technology, to produce electricity in arid lands, taking its predicament - a lot of hot dry air - and turning it into an asset. “EnergyTowers” is an econo

In high performance office new buildings and renovations nowadays it is common practice to use multiple façade technology. Double-skin facades are new possibilities for principal and architects seeking creative innovative design that are intelligently adapted to environmental conditions. The new possibilities make it difficult to make choices in the beginning of the design process. Methods to help the designers to make the right decisions are wanted. A method will be presented to support the evaluation within the design process of different facade concepts.

Commercial buildings with large exposed glazed façades require solar shading devices in order to protect occupants from uncomfortable direct glare. Automated window blinds can be used to reduce direct glare, while regulating the transmittance of daylight

This paper describes an experimental study of the thermalenvironment in a highly-glazed perimeter zone of an office building under varying climatic conditions, as well as in a controlled test chamber at the Hydro-Quebecresearch facilities in Shawinigan (LTE). Glazing and shading temperatures were measured at several points and the thermal environment was measured using an indoorclimate analyzer and a thermal comfort meter.

Despite the available knowledge about technologies for passive cooling, cooling energy consumption is still increasing in Europe. The international project KeepCooladdressed this gap, searching for intelligent ways to promote the market penetration of passive cooling solutions.