00000nam 2200000zi 4500 9.903329 CaOODSP 20221107180221 m o d f cr mn||||||||| 210915t20212021onca ob f000 0 eng d 9780660403496 CaOODSP eng rda CaOODSP n-cn--- M154-146/2021E-PDF Earth to air thermal exchanger (EATEX) : design principles and concept design tool. Ottawa : Natural Resources Canada = Ressources naturelles Canada, [2021] ©2021 1 online resource (41 pages) : illustrations (chiefly colour) text txt rdacontent computer c rdamedia online resource cr rdacarrier Issued also in French under title: Échangeur thermique terre air (ÉTTA) : principes et outil de conception. Includes bibliographical references (pages 39-41). "Earth to air thermal exchangers (EATEX) can provide a passive means of preheating and precooling ventilation and process air, thereby reducing reliance on electricity and fossil fuels. Their performance is governed by a series of interconnected variables such as tube material, length, diameter and layout; tube depth below grade; surface and deep soil conditions; ambient air temperatures and surface solar radiation; air flow, velocities, fan characteristics and operating schedules. The relationships between the soil, tube design, ambient air, and air velocity are quite complex. This document outlines the fundamental design principles and then applies these principles using complex energy simulation tools. The results of these complex sub-hourly simulations are then loaded into a tool that designers can use at the early design stage to assess the energy performance of design options for a series of Canadian climates"--Abstract. Heating Canada Computer simulation. Ventilation Canada Computer simulation. Heat exchangers Canada Computer simulation. Canada. Natural Resources Canada, issuing body. CanmetENERGY (Canada), issuing body. Échangeur thermique terre air (ÉTTA) : (CaOODSP)9.903330 PDF 1.37 MB https://publications.gc.ca/collections/collection_2022/rncan-nrcan/M154-146-2021-eng.pdf