Analysis of Mechanical Ventilation System with Heat Recovery in Renovated Apartment Buildings

Kamendere, Edite; Žogla, Gatis; Kamenders, Agris; Ikaunieks, Jānis; Rochas, Claudio

doi:10.1016/j.egypro.2015.06.005

Cited by 32 publications

(9 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As is shown, temperature efficiency slightly increases with the increasing outdoor temperature but still has satisfying value at lower temperatures when heating is needed. Similar observations were also presented by other researchers [65,66].…”

Section: Heat Recoverysupporting

confidence: 92%

Annual Energy Performance of an Air Handling Unit with a Cross-Flow Heat Exchanger

Michalak¹

2021

Energies

View full text Add to dashboard Cite

Heat recovery from ventilation air is proven technology resulting in significant energy savings in modern buildings. The article presents an energy analysis of an air handling unit with a cross-flow heat exchanger in an office building in Poland. Measurements were taken during one year of operation, from 1 August 15 to 31 July 16, covering both heating and cooling periods. Calculated annual temperature efficiency of heat and cold recovery amounted to 65.2% and 64.6%, respectively, compared to the value of 59.5% quoted by the manufacturer. Monthly efficiency of heat recovery was from 37.6% in August to 68.7% in November, with 63.9% on average compared to 59.5% declared by the manufacturer. Cold recovery was from 63.3% in April to 72.8% in September, with 68.1% annually. Calculated recovered heat and cold amounted 25.6 MWh and 0.26 MWh, respectively. Net energy savings varied from −0.46 kWh/m2 in August, when consumption by fans exceeded savings, to 5.60 kWh/m2 in January.

show abstract

Section: Heat Recoverysupporting

confidence: 92%

Annual Energy Performance of an Air Handling Unit with a Cross-Flow Heat Exchanger

Michalak¹

2021

Energies

View full text Add to dashboard Cite

show abstract

“…Several authors analyzed the AAHX to find the energy savings obtainable when it is coupled to a mechanical ventilation system. The purpose of [1] is the evaluation of the energy performance of a system made up of mechanical ventilation and AAHX in a residential building in Latvnia (North-East Europe). They found a heating percentage energy saving of about 60% compared to another similar building characterized by only natural ventilation.…”

Section: Introductionmentioning

confidence: 99%

The Use of Earth-to-Air and Air-to-Air Heat Exchangers for Different Italian Climates

D’Agostino¹,

Marino²,

Minichiello³

2016

IJHT

View full text Add to dashboard Cite

Nowadays, it is very important the use of different technologies that reduce the energy consumption. This paper investigates the energy saving obtainable by using air conditioning systems provided with suitable earth-to-air (EAHX) and/or air-to-air (AAHX) heat exchangers, for two different Italian climates: Palermo, a city of Southern Italy characterized by hot summers and mild winters, and Milan, a city of Northern Italy characterized by hot summers and cold winters. A case study is analyzed by means of dynamic building energy performance software, with reference to the same designed office building with or without the two types of heat exchangers. The seasonal results show that in winter the AAHX reduces the energy requirement more than the EAHX, while in summer the EAHX is more effective. Yearly results show that the use of the EAHX is preferable in mild or hot climates. Moreover, basing on the seasonal results, the two technologies are combined (using the AAHX in winter and the EAHX in summer). The results show that the coupling of the two heat exchangers is more convenient for Milan (saving up to 74%) than for Palermo (59%). Finally, the CO2 emission reductions and discounted payback periods for the two technologies are evaluated.

show abstract

“…Double-flow MV systems foresee air extraction from wet rooms and air supply to living rooms through two separate conduits. In this case two fans are necessary, which implies higher electricity needs for their operation than in single-flow systems; difficulties may also arise with the allocation of the ventilating unit [4,5]. However, this configuration also allows to pre-heat supply air from the exhaust air implementing a heat recovery (HR).…”

Section: Introductionmentioning

confidence: 99%

Energy balances and payback time for controlled mechanical ventilation in residential buildings

Evola¹,

Marletta²,

Gagliano³

et al. 2016

IJHT

View full text Add to dashboard Cite

In residential buildings, air renewal is usually entrusted to the occupants, who open windows at will. On the other hand, a controlled mechanical ventilation system (MV) may provide fresh outdoor air by mechanical means, thus diluting indoor pollutants and improving the indoor air quality (IAQ). The aim of this paper is to evaluate the technical features of controlled MV systems and their energy and financial appropriateness in residential buildings. Several configurations of mechanical ventilation system are designed for a reference residential unit located in various locations of Italy, covering a wide range of climates. For each configuration (single-flow, double-flow) the overall cost for installation is calculated. Therefore, for all the configurations of MV system, the electric energy to feed the fan and the thermal energy to counterbalance the heating needs due to the ventilation are determined, and compared to the energy needs in a building without any mechanical ventilation system. The results show that mechanical ventilation introduces considerable primary energy savings, with an attractive payback time of the investment especially in cold climates. This makes mechanical ventilation systems an appealing technology for reaching the target of Zero Energy Buildings.

show abstract

Analysis of Mechanical Ventilation System with Heat Recovery in Renovated Apartment Buildings

Cited by 32 publications

References 4 publications

Annual Energy Performance of an Air Handling Unit with a Cross-Flow Heat Exchanger

Annual Energy Performance of an Air Handling Unit with a Cross-Flow Heat Exchanger

The Use of Earth-to-Air and Air-to-Air Heat Exchangers for Different Italian Climates

Energy balances and payback time for controlled mechanical ventilation in residential buildings

Contact Info

Product

Resources

About