Traditional Iranian bathhouses (hammams) represent remarkable examples of vernacular architecture optimized for thermal performance in hot arid climates. This study quantitatively evaluates and compares multiple passive heating strategies employed hammams to mitigate envelope heat loss through simulations two exemplar cases - the Khan Golshan baths Yazd. A post-positivist research approach combined physical documentation, computational modeling using DesignBuilder V7.0.1.004 software,...

Abstract Using nonintegrated multiple coils in an electromagnet is a way to manage energy and reduce maintenance costs. In order model analyze the lifting force magnetic field different zone of electromagnet, exact equivalent circuit (MEC) required. this paper, accurate MEC dual‐coil electromagnets presented. MATLAB ANSYS MAXWELL software are used proposed simulate force, respectively. multi‐coil electromagnets, if coil burns out, will still be able lift loads with percentage nominal load...

Purpose The aim of this paper is to provide a simple yet accurate and efficient geometric method for thermal homogenization impregnated non-impregnated coil winding technologies based on the concept resistance. Design/methodology/approach For regular windings, periodic microscopic cell in space identified. Also, irregular average determined. An approximation used calculate resistance cell. Based approximation, insulation considered as circular ring around wire. Mathematical equations are...

Magnetic crane is one of the industrial applications magnetic absorption, which uses an electromagnet to create necessary force for lifting and moving objects. In this paper, field analysis design are discussed. During process, with special attention leakage fluxes fringing effects, a new equivalent circuit proposed. Also, nonlinear behavior B-H curve ferromagnetic core its saturation point considered. Due various shapes core, U_I structure selected symmetrical winding reduce flux effects....

A hybrid method is introduced for analysis of the H-plane waveguide discontinuities.It combines multimode contour integral and mode matching techniques.The process based on dividing circuit structure into key building blocks finding scattering matrix each block individually.The whole can be found by cascading these blocks.Also developed multi-media circuits.Therefore, it possible to analyze filters with dielectric resonators using this method.The accuracy run time purposed compared those...

Abstract Practical study such as laboratory activity helps students to learn about engineering technical courses. New electronic technologies and the Internet of Things allow researchers do experiments remotely. During quarantine due pandemics Covid‐19 or when are not present in university, remote laboratories used a complementary teaching feature. In these conditions, also development experimental‐based research. This paper presents design interactive for practical learning DC machines at...

Purpose An excessive increase in temperature will reduce the lifespan and even burn coil. The variety of materials structure electromagnet along with its multi-layer winding creates a complex heterogeneous thermal structure. There are very few researches that completely focused on analysis electromagnets. purpose this paper is to provide an accurate, yet fast simple method for cylindrical electromagnets both transient steady-state modes. For purpose, equivalent circuit (TEC) presented based...

Purpose To prevent the coil from burning or getting damaged, it is necessary to estimate duration of its operation as long temperature does not exceed permissible limit. This paper aims investigate effect switching on thermal behavior impregnated and nonimpregnated windings. Also, safe operating time for each winding determined. Design/methodology/approach The power loss expressed a function specifications. Using homogenization techniques, equivalent properties homogenized are calculated...

Cylindrical electromagnets are used in various industries. The geometric structure and circular symmetry of these reduce flux leakage increase their efficiency. In this paper, a precise magnetic equivalent circuit for the cylindrical electromagnet is presented its permeance relations proved. order to evaluate proposed model, field different parts was calculated compared with simulation results. highest error between results two methods related calculation under coil, which equal 3%. Also,...

Multimode contour integral method is one of methods in analysis and design H-plane waveguide circuits. In this method, the effect higher order modes excited by discontinuities structure considered. This makes to approve accuracy or complex article, multimode used determine properties dielectric resonators such as resonant frequency constant. Thus, it not necessary optimize tuning designed resonator filter. The validated comparison results with those reported literatures.

Purpose This paper aims to present an accurate magnetic equivalent circuit for modeling the cylindrical electromagnet so that by analyzing it, flux density in different parts of electromagnet, as well its lifting force, can be calculated. Design/methodology/approach The structure is divided into modeled lumped element parameters. Mathematical equations calculating these elements are presented and proved. axial symmetry made it possible use planar circuits modeling. To increase accuracy...

Abstract The heterogeneous and complex structure of the electromagnet makes it difficult to study heat transfer equations. Therefore, numerical methods simulation software are used for its analysis. In this paper, an accurate thermal equivalent circuit (TEC) modeling studying in a cylindrical is presented. proposed TEC can be both transient steady-state modes. Due symmetrical electromagnet, considered radial axial directions. Also, use winding homogenization techniques has helped simplify...