How can I calculate run fraction (Fc) based on bin method in ground source heat pump?

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Giorgos P. Kouropoulos

Run fraction or correction factor? What is the reference of specific equation?

Hamed Moslehi

Run Fraction

Generally, run fraction calculated by degree days method. The following may be help you.

Heating with Renewable Energy (Page 658) https://books.google.gr/books?id=QtOBCwAAQBAJ&pg=PA844&lpg=PA844&dq=run+fraction+heat+pump&source=bl&ots=qY9dg1ZX8m&sig=jVJnGtIutoaRIT8HnMX04rLAtj8&hl=el&sa=X&ved=0ahUKEwiU9PuvkcDbAhWEa5oKHQ0GDC4Q6AEIVjAG#v=onepage&q=run%20fraction%20heat%20pump&f=false

Modern Hydronic Heating: For Residential and Light Commercial Buildings, (Page 75), https://books.google.gr/books?id=-EgzoB9D4kQC&pg=PA75&lpg=PA75&dq=heating+run+fraction&source=bl&ots=3ljDpC8Abi&sig=KtnsFKzFf01Qg_HOWtPNH_E3qiY&hl=el&sa=X&ved=0ahUKEwjquZyqksDbAhXRb1AKHWY2D6IQ6AEILDAB#v=onepage&q=heating%20run%20fraction&f=false

Shen, B., Baxter, V., Abdelaziz, O. and Rice. K. (2017). CCHP –Finalize field testing of cold climate heat pump (CCHP) based on tandem vapor injection compressors (Regular)– FY17 2nd Quarter Milestone Report. OAK Ridge National Laboratory. Page 5.

https://info.ornl.gov/sites/publications/Files/Pub74009.pdf