Parametric study of a regenerative heat exchanger for ventilation with a periodic change in the air flow direction

Aktershev, S. P.; Mezentsev, I. V.; Mezentseva, N. N.

doi:10.1016/j.applthermaleng.2021.117831

Cited by 2 publications

(2 citation statements)

References 18 publications

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“…This requires additional efforts to improve the regenerative heat exchangers for decentralized ventilation units and the way they function. A parametric analysis of the factors affecting the efficiency of such devices is presented in [3,4]. For the current optimization, a multi-parameter mathematical model of a regenerator with periodic action was used, taking into account the mutual influence of all essential factors on the functional characteristics of the regenerator, presented in the article [5].…”

Section: Introductionmentioning

confidence: 99%

Simple improvements for decentralized air handling unit for regenerative heat recovery

Penev,

Tsokov,

Shushulov

2023

IOP Conf. Ser.: Earth Environ. Sci.

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This paper presents the optimization of a fixed regenerative heat exchanger for a decentralized air handling unit (AHU) and a simple algorithm for its control. The influence of the geometric characteristics of the regenerative matrix and the duration of the airflow switching periods on thermal efficiency was analyzed. For this purpose, a numerical analysis using the finite volume method of the ANSYS, Fluent software was used. The simple logic of control is proposed as a result of field experiments and numerical analysis based on close-to-real operating conditions. The control algorithm prevents the operation of the device in case of a significant imbalance of the air flows and in case of a strong deterioration of the efficiency of the regenerator as a result of the presence of condensation of water vapour in the airflow through the regenerator.

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Section: Introductionmentioning

confidence: 99%

Simple improvements for decentralized air handling unit for regenerative heat recovery

Penev,

Tsokov,

Shushulov

2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…Increasing window tightness is relatively easy to do in renovations of existing buildings and is therefore of paramount importance [7]. In terms of heat loss, but also as a result of modern construction methods and higher comfort requirements, forced ventilation with heat recovery is becoming increasingly popular [8,9]. The development of heating systems is moving towards greater efficiency in energy conversion [10].…”

Section: Introductionmentioning

confidence: 99%

Modelling the Heat Loss of a Building

Rigo¹,

Velička²

2022

AMS

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The aim of this paper is to calculate the heat loss and annual energy demand for heating of an administrative building for three variants of thermal-technical design and their evaluation. The heat losses were determined according to the legislation in force and in accordance with the normative requirements. The calculations made can be used in the next phase for the design of the heat source and heating system for heating and for the design of forced ventilation with heat recovery. Based on the optimum choice of technical equipment, it is also possible to evaluate the investment and operating costs for the installation of the different heating and ventilation concepts. Given the current significant increase in energy prices, the present topic is very topical.

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Parametric study of a regenerative heat exchanger for ventilation with a periodic change in the air flow direction

Cited by 2 publications

References 18 publications

Simple improvements for decentralized air handling unit for regenerative heat recovery

Simple improvements for decentralized air handling unit for regenerative heat recovery

Modelling the Heat Loss of a Building

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