Performance evaluation and life cycle analysis of earth to air heat exchanger in a developing country

Uddin, Md. Shazib; Ahmed, Raju; Rahman, Masudur

doi:10.1016/j.enbuild.2016.06.088

Cited by 49 publications

(12 citation statements)

References 20 publications

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“…Recent publications deal with the efficiency of EAHX based on laboratory work [12] and CFD calculations [13]. Finally, two recent papers review various studies Kaushal [14] and life-cycle analysis of EAHX in a developing country by Uddin and Masudur [15]. Peretti et al [8] and Kauhsal [14] focused on heat flow and Gan [11] on interaction with surrounding soil and Zukowski [7], Szymanski and Wojtkowiak [6] deal with possible applications, benefits and risk of poor design, few papers deal with evaluation of EAHX for annual cycles of field performance.…”

Section: Literature Reviewmentioning

confidence: 99%

Alternative Methods For Preheating Outdoor Ventilation Air

Zapala¹,

Bomberg²,

Dechnik³

et al. 2019

Preprint

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Growing popularity of smart and integrated buildings requires a review of methods to optimize the preheat of ventilation air. An integrated system permits using heat ex-changers located in the mechanical room or in the future even using an exterior wall as a heat exchanger. One may ask the question how does the earth-air heat exchanger (EAHX) technology fitts into this function. EAHX has many advantages but also has many unanswered questions. Some of the drawbacks are: a possible entry of radon gas, high humidity in the shoulder seasons as well as the need for two different air intake sources with a choice that depends on the actual weather conditions. While in winter, the EAHX may be used continuously to ensure thermal comfort, in other seasons, its operation must be automatically controlled. To generate the missing information about the EAHX technology we reviewed literature and examined two nearly identical EAHX systems, placed either in ground next to the building or under the basement slab. Effectively, the information provided in this paper, shows advantages of merging both these approaches while the EAHX shoud be placed under the house or near the basement foundation.

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Section: Literature Reviewmentioning

confidence: 99%

Alternative Methods For Preheating Outdoor Ventilation Air

Zapala¹,

Bomberg²,

Dechnik³

et al. 2019

Preprint

View full text Add to dashboard Cite

show abstract

“…Recent publications deal with the efficiency of EAHX based on laboratory work of Skotnicka-Siepsiak and Weso1owski (2016) and computational fluid dynamic (CFD) calculations (Congedo et al, 2016). Finally, two recent papers review various studies (Kaushal, 2017) and life-cycle analysis of EAHX in a developing country (Uddin et al, 2016). Kaushal (2017) focused on heat flow, Gan (2014) focused on interaction with surrounding soil, and _ Zukowski (2012) and Szymanski and Wojtkowiak (2007) dealt with possible applications, benefits, and risk of poor design; there are few papers dealing with evaluation of EAHX for annual cycles of actual performance.…”

Section: Literature Reviewmentioning

confidence: 99%

Buildings with environmental quality management, part 2: Integration of hydronic heating/cooling with thermal mass

Romanska-Zapala

Bomberg

Fedorczak-Cisak

et al. 2017

Journal of Building Physics

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The quest for a sustainable built environment brought dramatic changes to architectural design because of the integrated design process. The integrated design process is the modern way to realize “performance architecture,” that is, design with a view to field performance. Integrated design process permits merging of concepts from passive-house designs, solar engineering, and an integration of the building enclosure with mechanical services. In part 1 of this series, the emergence of many new multi-functional materials was discussed. Yet, current innovation is guided by lessons from history. Thermal mass in heavy masonry buildings allowed periodic heating. The authors postulate integration of a hydronic heating system with the walls and the use of smart temperature control of the heating system to modify and optimize the thermal mass contribution. To use the mass of a building, one must accept transient temperature conditions where the indoor temperature varies but is confined by comfort requirements for both summer and winter conditions. On the other side, resiliency requirements dictate that in the absence of electricity the air temperature does not fall below about 12°C over a period of several hours. This requirement implies that summer cooling will likely be separated from the heating systems and that operation of a low-energy building is heavily dependent on the design of smart control systems. Analysis of control systems provided in this article for earth-to-air heat exchangers and cooling of houses with lightweight walls lead us to the requirements of separation between heating and ventilation and needs for different sources of fresh air. Finally, a new concept emerges.

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“…These works were based on laboratory work [12] or computational fluid dynamic calculations [13]. The literature includes a review [14] of various designs and life cycle analysis of EAHX [15].…”

Section: Introductionmentioning

confidence: 99%

On Preheating of the Outdoor Ventilation Air

et al. 2019

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The growing popularity of buildings with integrated sub-systems requires a review of methods to optimize the preheating of ventilation air. An integrated system permits using geothermal heat storage parallel to the direct outdoor air intake with additional treatment in the mechanical room as a part of building an automatic control system. The earth–air heat exchanger (EAHX) has many advantages but also has many unanswered questions. Some of the drawbacks are: A possible entry of radon gas, high humidity in the shoulder seasons, and the need for two different air intake sources with a choice that depends on the actual weather conditions. In winter the EAHX may be used continuously to ensure thermal comfort, while in other seasons its operation must be automatically controlled. To generate missing information about EAHX technology we examined two nearly identical EAHX systems, one placed in the ground next to a building and the other under the basement slab. In another project, we reinforced the ground storage action by having a heat exchanger placed on the return pipes of the hydronic heating system. The information provided in this paper shows advantages of merging both these approaches, while the EAHX could be placed under the house or near the basement foundation that is using an exterior basement insulation.

show abstract

Performance evaluation and life cycle analysis of earth to air heat exchanger in a developing country

Cited by 49 publications

References 20 publications

Alternative Methods For Preheating Outdoor Ventilation Air

Alternative Methods For Preheating Outdoor Ventilation Air

Buildings with environmental quality management, part 2: Integration of hydronic heating/cooling with thermal mass

On Preheating of the Outdoor Ventilation Air

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