Open AccessEnergy saving potential of ventilation systems with exhaust air heat recovery
Author(s) -
Jurģis Zemītis,
Anatolijs Borodiņecs
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/660/1/012019
Subject(s) - heat recovery ventilation , heat exchanger , energy recovery , energy recovery ventilation , recuperator , environmental science , ventilation (architecture) , internal heating , hybrid heat , energy consumption , energy (signal processing) , nuclear engineering , process engineering , mechanical engineering , heat pump , engineering , mathematics , electrical engineering , statistics
The paper presents the results of data gathering regarding the heat recovery efficiencies of different heat recovery types at various air flows supplied by some of the most common manufacturers. The study showed that the average heat recovery efficiency of modern, commonly used rotary heat exchangers is around 83% while for counter-flow exchangers around 86%. Also, in the paper, the simulation results of heat energy consumption and recovered heat potential for the single-family house are presented. The simulations are performed in IDA-ICE software and show that for the specific building it is possible to reduce the heating energy up to 84% if ventilation with heat recovery is used. The results also showed that in case the internal heat loads decrease, then it slightly affects the heat recovery potential. In the case of no internal gains, this value decreases by 4%.