Alternative Methods For Preheating Outdoor Ventilation Air

Abstract

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.

Merging Geo-Solar Exergy Storage Technology (GEST) and Environmental Quality Management (EQM): A Practical Solution for NZEB Retrofit

“…With automated operation the temperature increase could have been significantly higher. This emphasizes the need for the early development of a control system, as published in an analysis of EQM technology [4]. Several other observations from the previous validation of the GEST test building corroborate this.…”

“…Today we merge this concept with another technology, namely EQM (environmental quality management). EQM encompasses considerations related to occupant-centered indoor climate (OCC) [4,5,6]. EQM includes water-based heat pumps, integration of sub-systems with automatic steering and control systems and dynamic operation of indoor environment.…”

Modular statistical system for an integrated environmental control

“…as well as power sources. The use of modern information technologies, many statistical analyses and a wide range of configuration options allows to comprehensively assess the energy efficiency of a building [22,23,24,25,26,27,28,29]. The modular structure and the option of parameterizing the system allows user to tailor the solution to a specific object.…”