Offering a preventive solution to defects in commercial building facility system using BIM

Purpose Commercial building facility systems are costly, and due to the complexity of operation and maintenance (O&M), some failures can cause irreversible expensive damage. Currently, few capabilities of building information modeling (BIM) have been used in the facility maintenance operation. The purpose of this paper is to use a tool for making it easier to predict preventable defects in commercial building facility systems by examining a complete BIM. Design/methodology/approach To this end, a list of frequent defects in the facility system was achieved by a review of commercial building literature. Then, by examining a complete BIM model, the available methods and tools for O&M facilities during the operation period are identified and analyzed. Findings The results of the paper show that the solution presented based on total productive maintenance (TPM) subsets can effectively prevent facility system defects during the operation and maintenance period. An expert team assesses the validation of results. Originality/value The findings can help facility managers to adopt measures using TPM methods to prevent defects through an integrated BIM platform. The examination is based on case studies, surveys, expert experience and a thorough literature review.

Implementation of Digital Signage for Smart Facility System using IoT

Recently, as wireless communication and smart phone spread and technology develop, there is an increasing demand for a system capable of real-time communication and business processing using online information anytime, anywhere in the offline field. In particular, changes in digital signage technology are developing in various ways due to the development of advanced convergence technologies. With the development of convergence technologies, digital signage has been constructed to provide information through a structured structure between each component in order to develop in a form that can deliver information in response to environmental changes rather than user input. This paper developed a system that outputs and services various contents together with industrial facility inspection and management by using wireless communication Bluetooth in a display device equipped with an operating system. This system is an Internet-of-Things-based system that simultaneously outputs various contents and a business management function that enables facility inspection.

Method of reconfiguring industrial facilities using the apparatus of piecewise linear aggregates

A method has been developed for structural and functional reconfiguration of industrial facilities based on piecewise linear aggregates, with ranking elements according to the importance of fulfilling their target function. The method allows for the conjugation of elements of complex technical objects using the conjugation operator. An example of the application of the proposed method is given. Keywords: reconfiguration, industrial facility, system, piecewise linear aggregates, synthesis of elements. [email protected], [email protected]

AUTOMATED EMISSIONS CONTROL SYSTEM. BUILDING, FUNCTION AND IM-PLEMENTATION PRINCIPLES

This paper examines the principles of the functional purpose of the automated emission con-trol system, the basic principles of building the system, as well as the example of the practical application of the yf refining facility system, namely the branch of the Berezovsky GRES of Unipro, RUSAL Krasnoyarsk.

Transient Performance Analysis of an Aero Gas Turbine Cooled Cooling Air Heat Exchanger

Aviation faces several challenges to maintain growth while adapting to an environmentally viable footprint. Increasing efficiency, which in the past induced a steady rise in the turbine entry temperatures, requires successful cooling of critical components to relieve the combined effects of higher temperatures and pressures. Starting with a conceptual design that alters the flow path of the secondary air system to divert bled air into a heat exchanger, this research focuses on assessing the effects of actual flight conditions on a cooled cooling air (CCA) system. In particular, the study undertakes a transient analysis of the CCA heat exchanger under a stressful temperature increase. The performance of the unit from idle to max take off (MTO) conditions required a unique facility for experimental testing, also capable of reaching and sustaining the necessary specifications. The novelty of the concept compelled the development of numerical models to aid the design and evaluation of the experiment. These models use one- and three-dimensional techniques to perform preemptive analysis of the test range, to ensure safety during the actual test, and to provide valuable information about the facility system and the inner flow structure of the heat exchanger. The study completed successful experiments using numerically generated procedures. A back-to-back configuration, representative of multiple installations, offers evidence about the cross-influence of each heat exchanger. The research also examined the dynamic effects to provide the bases for further studies focusing on this topic.

Strategy of landfilled waste reduction by a distributed materials recovery facility system in Surabaya, Indonesia

Slow progress in municipal waste reduction and landfill space scarcity lead to numerous environmental problems in Indonesia and developing countries. Surabaya, the role model of an environmental management city in Indonesia and other countries, is no exception. Despite the situation, Surabaya’s initiative of deploying a distributed materials recovery facility (MRF) and its performance in recovering recyclables show a potential to be developed for addressing the landfill waste reduction issues. This study proposes a new strategy with small-sized distributed MRFs to achieve 30% landfilled waste reduction and reducing greenhouse gas (GHG) emissions, focusing on Surabaya as the case study. Scenario 1 merged three pairs of transfer stations which shows some indistinguishable optimizations and failed to meet the target. Both Scenario 2 and Scenario 3 added six years of landfill lifetime for reaching the target. However, the distributed MRF system and different transportation systems in Scenario 3 accomplished the goal with only 24 new MRFs, whereas Scenario 2 needs to upgrade 48 transfer stations into MRFs. Scenario 3 decreased the GHG emissions generation by 29%, possibly contributing to Indonesia’s GHG emissions target of 0.2%.

Study on the Improvement of Electrical Facility System of Automated External Defibrillators by Real-Time Measurement of Thoracic Impedance

Sudden Cardiac Arrest (SCA) is a serious emergency disease that has increased steadily every year. To this end, an Automated External Defibrillator (AED) is placed in a public place so that even non-professional medical personnel can respond to SCA. However, the thoracic impedance of patients changes due to CardioPulmonary Resuscitation (CPR) and artificial respiration during first aid treatment. In addition, changes in chest statues due to gender, age, and accidents cause changes in thoracic impedance in real time. The change in thoracic impedance caused by this has a negative effect on the intended electrical energy of the automatic heart shocker to the emergency patient. To prove this, we divided it into adult and pediatric modes and experimented with the energy error of the AED according to the same impedance change. When the first peak current was up to 56.4 (A) and at least 8.4 (A) in the adult mode, the first peak current was up to 32.2 (A) and at least 4.8 (A), respectively, when the impedance changed, the error of the current figure occurred. In this paper, the inverse relationship between thoracic impedance and electric shock energy according to the state of the cardiac arrest patient is demonstrated through the results of the experiment, and the need for an electric facility system that can revise for changes in thoracic impedance of the cardiac arrest patient by reflecting them on electric shock energy in real time is presented.

The MeerKAT telescope as a pulsar facility: System verification and early science results from MeerTime

We describe system verification tests and early science results from the pulsar processor (PTUSE) developed for the newly commissioned 64-dish SARAO MeerKAT radio telescope in South Africa. MeerKAT is a high-gain ( ${\sim}2.8\,\mbox{K Jy}^{-1}$ ) low-system temperature ( ${\sim}18\,\mbox{K at }20\,\mbox{cm}$ ) radio array that currently operates at 580–1 670 MHz and can produce tied-array beams suitable for pulsar observations. This paper presents results from the MeerTime Large Survey Project and commissioning tests with PTUSE. Highlights include observations of the double pulsar $\mbox{J}0737{-}3039\mbox{A}$ , pulse profiles from 34 millisecond pulsars (MSPs) from a single 2.5-h observation of the Globular cluster Terzan 5, the rotation measure of Ter5O, a 420-sigma giant pulse from the Large Magellanic Cloud pulsar PSR $\mbox{J}0540{-}6919$ , and nulling identified in the slow pulsar PSR J0633–2015. One of the key design specifications for MeerKAT was absolute timing errors of less than 5 ns using their novel precise time system. Our timing of two bright MSPs confirm that MeerKAT delivers exceptional timing. PSR $\mbox{J}2241{-}5236$ exhibits a jitter limit of $<4\,\mbox{ns h}^{-1}$ whilst timing of PSR $\mbox{J}1909{-}3744$ over almost 11 months yields an rms residual of 66 ns with only 4 min integrations. Our results confirm that the MeerKAT is an exceptional pulsar telescope. The array can be split into four separate sub-arrays to time over 1 000 pulsars per day and the future deployment of S-band (1 750–3 500 MHz) receivers will further enhance its capabilities.