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Open AccessArticle

A New Metre for Cheap, Quick, Reliable and Simple Thermal Transmittance (U-Value) Measurements in Buildings

Escuela Técnica Superior de Ingeniería, Universidad de Huelva, Ctra. Palos de la Ftra.-Huelva s/n, 21819 Huelva, Spain
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Sensors 2017, 17(9), 2017; https://doi.org/10.3390/s17092017
Received: 6 June 2017 / Revised: 19 August 2017 / Accepted: 1 September 2017 / Published: 3 September 2017
(This article belongs to the Section Physical Sensors)
This paper deals with the thermal transmittance measurement focused on buildings and specifically in building energy retrofitting. Today, if many thermal transmittance measurements in a short time are needed, the current devices, based on the measurement of the heat flow through the wall, cannot carry out them, except if a great amount of devices are used at once along with intensive and tedious post-processing and analysis work. In this paper, from well-known physical laws, authors develop a methodology based on three temperatures measurements, which is implemented by a novel thermal transmittance metre. The paper shows its development step by step. As a result the developed device is modular, scalable, and fully wireless; it is capable of taking as many measurements at once as user needs. The developed system is compared working together on a same test to the currently used one based on heat flow. The results show that the developed metre allows carrying out thermal transmittance measurements in buildings in a cheap, quick, reliable and simple way. View Full-Text
Keywords: U-value; thermal transmittance; energy retrofitting of existing buildings; wireless; heat flow; temperature sensors; Raspberry Pi; Zigbee; Xbee; Arduino U-value; thermal transmittance; energy retrofitting of existing buildings; wireless; heat flow; temperature sensors; Raspberry Pi; Zigbee; Xbee; Arduino
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Andújar Márquez, J.M.; Martínez Bohórquez, M.Á.; Gómez Melgar, S. A New Metre for Cheap, Quick, Reliable and Simple Thermal Transmittance (U-Value) Measurements in Buildings. Sensors 2017, 17, 2017.

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