Limits...
Non-Destructive Current Sensing for Energy Efficiency Monitoring in Buildings with Environmental Certification.

Mota LT, Mota Ade A, Coiado LC - Sensors (Basel) (2015)

Bottom Line: 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.

View Article: PubMed Central - PubMed

Affiliation: Pontifical Catholic University of Campinas, CEATEC, Campus I, Rod. Dom Pedro I, Km136, CEP 13086-900, Campinas, São Paulo, Brazil. lia.mota@puc-campinas.edu.br.

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.

No MeSH data available.


Prototype of the proposed sensor.
© Copyright Policy
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4541904&req=5

sensors-15-16740-f005: Prototype of the proposed sensor.

Mentions: The microcontroller board used in this work is the Arduino Uno, which is based on ATmega328 microcontroller. It has 14 digital input/output pins and six analog inputs [39]. This board is able to process the information related to the measured values of Ii that come from the amplifying/filtering stage and can determine the energy consumption/generation, according to Equations (1) and (2). Figure 5 illustrates the prototype of the complete experimental sensor, integrating air core transformer coils, electronic circuit and microcontroller board.


Non-Destructive Current Sensing for Energy Efficiency Monitoring in Buildings with Environmental Certification.

Mota LT, Mota Ade A, Coiado LC - Sensors (Basel) (2015)

Prototype of the proposed sensor.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4541904&req=5

sensors-15-16740-f005: Prototype of the proposed sensor.
Mentions: The microcontroller board used in this work is the Arduino Uno, which is based on ATmega328 microcontroller. It has 14 digital input/output pins and six analog inputs [39]. This board is able to process the information related to the measured values of Ii that come from the amplifying/filtering stage and can determine the energy consumption/generation, according to Equations (1) and (2). Figure 5 illustrates the prototype of the complete experimental sensor, integrating air core transformer coils, electronic circuit and microcontroller board.

Bottom Line: 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.

View Article: PubMed Central - PubMed

Affiliation: Pontifical Catholic University of Campinas, CEATEC, Campus I, Rod. Dom Pedro I, Km136, CEP 13086-900, Campinas, São Paulo, Brazil. lia.mota@puc-campinas.edu.br.

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.

No MeSH data available.