Share

IIR document

Simulation of a direct expansion solar assisted heat pump working with R134a and R407C.

Number: pap. ID: 449

Author(s) : MOLINAROLI L., JOPPOLO C. M., DE ANTONELLIS S.

Summary

The paper illustrates the results of a numerical study carried out to investigate energy features of heat pumps used for space heating whose evaporator is made by solar collector field. The analysis is carried out through a steady state mathematical model, considering four different surfaces of the solar collector field and two different working fluids, respectively R134a and R407C. Several simulations are carried out in order to analyse the effect of outdoor air temperature and solar radiation on heat pump COP, collector field surface usage and compressor rotation frequency. Results show that the heat pump working with R134a requires higher surface of the solar collector field but provides higher COP. Moreover, the use of a modular solar collector field and of a variable speed compressor is essential for the heat pump to properly match building heating demand.

Available documents

Format PDF

Pages: 8 p.

Available

  • Public price

    20 €

  • Member price*

    Free

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Simulation of a direct expansion solar assisted heat pump working with R134a and R407C.
  • Record ID : 30003058
  • Languages: English
  • Source: Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
  • Publication date: 2011/08/21

Links


See other articles from the proceedings (569)
See the conference proceedings

Indexing