Abstract
Nowadays, buildings environmental certifications encourage the implementation of initiatives aiming to increase energy efficiency in buildings. In these certification systems, increased energy efficiency arising from such initiatives must be demonstrated. Thus, a challenge to be faced is how to check the increase in energy efficiency related to each of the employed initiatives without a considerable building retrofit. In this context, this work presents a non-destructive method for electric current sensing to assess implemented initiatives to increase energy efficiency in buildings with environmental certification. This method proposes the use of a sensor that can be installed directly in the low voltage electrical circuit conductors that are powering the initiative under evaluation, without the need for reforms that result in significant costs, repair, and maintenance. The proposed sensor consists of three elements: an air-core transformer current sensor, an amplifying/filtering stage, and a microprocessor. A prototype of the proposed sensor was developed and tests were performed to validate this sensor. Based on laboratory tests, it was possible to characterize the proposed current sensor with respect to the number of turns and cross-sectional area of the primary and secondary coils. Furthermore, using the Least Squares Method, it was possible to determine the efficiency of the air core transformer current sensor (the best efficiency found, considering different test conditions, was 2%), which leads to a linear output response.
Highlights
IntroductionThe international concern about the shortage of environmental resources dates from 1970, when international conventions took place with the goal of slowing down natural resource consumption [1]
The international concern about the shortage of environmental resources dates from 1970, when international conventions took place with the goal of slowing down natural resource consumption [1].Among these conventions, one can cite the United Nations Conference on the Human Environment that occurred in Stockholm in 1972
The straight lines obtained for conductors with different cross-sectional areas are very similar
Summary
The international concern about the shortage of environmental resources dates from 1970, when international conventions took place with the goal of slowing down natural resource consumption [1] Among these conventions, one can cite the United Nations Conference on the Human Environment that occurred in Stockholm in 1972. Nations) and emphasized that all development must respond to actual demands without shorting future generations’ capability of satisfying their own necessities [1,2,3] This concept was directly applied to the construction industry, as defined in the Second United Nations Conference on Human Settlements (Habitat II) held in Istanbul in 1996.Since this conference, the European construction industry began considering the concept of sustainable development for buildings and some regulations and standards emerged in France(RT 2000), Switzerland (Minergie), and Germany (Habitat Passivo) [4,5].
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
