performance analysis of a re-circulating heat pump dryer
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ID: 170504
2016
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Abstract
A re-circulating heat pump dryer (HPD) system was designed, constructed and
tested at steady state and transient conditions. Refrigerant 134a was used as
a refrigerant in this system. The tests were performed to observe behavior of
HPD system. So, changes of temperature and relative humidity of drying air
through the dryer and heat pump operating temperatures were observed during
the drying process and effects of bypass air ratio (BAR) on the system’s
parameters as system performance and specific moisture extracted ratio (SMER)
at steady state were investigated. The HPD system was also tested to
investigate temperatures and relative humidity changes of drying air during
drying process on the system’s parameters depend on time. Air flow rate
circulated through the HPD system was 554m3/h during the all tests. According
to test results, the system’s parameters did not change up to 40% of BAR.
Then the COP and SMER values were decreased after 40% of BAR. While SMER
values changed between 1.2 and 1.4, COPsys changed between 2.8 and 3.3 depend
on BAR. As well as during the drying process, the COP and SMER values were
also affected and decreased depend on time.
| Reference Key |
nurettin2016thermalperformance
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|---|---|
| Authors | ;Yamankaradeniz Nurettin;Sokmen Furkan K.;Coskun Salih;Kaynakli Omer;Pastakkaya Bilsay |
| Journal | Nature |
| Year | 2016 |
| DOI |
10.2298/TSCI130426069Y
|
| URL | |
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