This paper presents numerical modeling technique for Dhajji-Dewari structures (timber-braced rubble stone masonry), and its application for the evaluation of in-plane force-deformation capacity of Dhajji wall panels of different configuration of bracings. Dhajji structures are mainly composed of vertical and horizontal timber posts and braced using diagonal bracings and horizontal studs. Wall o...

A methodology has been developed for the multiobjective optimization of the refurbishment of domestic building stock on a regional scale. The approach is based on the decomposition of the problem into two stages: first to find the energy-cost trade-off for individual houses, and then to apply it tomultiple houses. The approach has been applied to 759 dwellings using buildings data from a survey...

Artificial neural networks have been used for prediction of cooling loads in buildings. Only cooling load simulations were run to evaluate the performance of the network for tropical countries like India where cooling is a critical issue. The input parameters taken for the simulation were thickness of the wall, presence of insulation on the western and the southern elevation, month of the year ...

Inverters are commonly used in various motor applications. This greatly increases the pulse endurance stress of the wire due to switching transience. A new type of wire with two layers & three layers of Corona resistant material has been developed by BCwire® to overcome the aforementioned problem. This paper will give a brief introduction of the wire, detailed test procedure, and preliminary re...

Heat conduction through eccentric systems with circular inner surface and regular polygonal outer surface has been analyzed. Constant wall temperature at the inner surface and convective heat transfer from the outer surface is considered. A two dimensional semi analytical method using boundary collocation technique is used in which collocation points are considered on the outer periphery of the...

in this paper, dynamic transient method and conventional degree-hours method (static) have been compared to estimate heating and cooling loads of building’s wall. all main wall surfaces of various orientations, i.e.south, west, east, north, and horizontal are considered in the climate of tehran, iran. in this study, a conventional wall structure, which is comprisedconcrete as main wall material...

The effects of a number of design parameters have been investigated including the types of cavity insulation, resilient channels, gypsum board thickness, the number of gypsum board layers, stud arrangements, and type of framing. The results have shown that the main factors that affected the performance of stud wall assemblies were the type of insulation and the number of gypsum board layers. In...

Analytical and experimental studies conducted at the NASA Langley Research Center for investigating integrated cryogenic propellant tank systems for a Reusable Launch Vehicle are described. The cryogenic tanks are investigated as an integrated tank system. An integrated tank system includes the tank wall, cryogenic insulation, Thermal Protection System (TPS) attachment sub-structure, and TPS. A...