Akademska digitalna zbirka SLovenije - logo
Faculty of Mechanical Engineering, Lj. (FSLJ)
  • Evaluating R450A as a drop-in replacement for R134a in household heat pump tumble dryers
    Gatarić, Pero ; Lorbek, Luka, strojnik
    This paper presents the results of an experimental study evaluating R450A as a possible drop-in replacement for R134a in household heat pump tumble dryers. A heat pump installed in a tumble dryer was ... equipped with pressure and temperature sensors, and electrical power meters. First, the energy consumption according to the IEC 61121 standard was evaluated using R134a. Then the refrigerant was replaced with R450A and a new optimal charge was determined. The tumble dryer performance was then evaluated again and compared with the previous results. It was found that R450A is a suitable drop-in replacement for R134a in heat pump tumble dryers. The total energy consumption of the tumble dryer decreased by 3.7% and several other benefits such as a better utilized evaporator, and a lower refrigerant temperature at the compressor outlet were observed. Additionally, the refrigerant charge CO2 equivalent was reduced by more than 50%. However, the duration of the drying cycle increased by 4.2%, due to a slightly lower condensing temperature in the heat pump.
    Source: International journal of refrigeration = Revue internationale du froid. - ISSN 0140-7007 (Vol. 128, Aug. 2021, str. 22-33)
    Type of material - article, component part
    Publish date - 2021
    Language - english
    COBISS.SI-ID - 58371587

    Link(s):

    https://www.sciencedirect.com/science/article/pii/S0140700721001195
    DOI

Shelf entry