bobkokke
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- TL;DR Summary
- Calculate compressor side of a Vapour compression cycle without knowing output of the compressor.
Hi everyone,
I'm fairly new to HVACR systems and currently doing research on building an estimation model of a basic vapor compression cycle.
Right now, I'm trying to calculate the enthalpy change across the compressor — from point H1 (before the compressor) to point H2 (after the compressor). For my test setup, I’m assuming R134a as the refrigerant, with an inlet pressure of 2 bar. (if possible well asume 5K superheating)
As a reference, I’m using a Bitzer 2DC-3.2Y-40S compressor, but I don’t yet have outlet pressure or temperature data.
My questions are:
Any help or guidance would be greatly appreciated!
I'm fairly new to HVACR systems and currently doing research on building an estimation model of a basic vapor compression cycle.
Right now, I'm trying to calculate the enthalpy change across the compressor — from point H1 (before the compressor) to point H2 (after the compressor). For my test setup, I’m assuming R134a as the refrigerant, with an inlet pressure of 2 bar. (if possible well asume 5K superheating)
As a reference, I’m using a Bitzer 2DC-3.2Y-40S compressor, but I don’t yet have outlet pressure or temperature data.
My questions are:
- How can I estimate the outlet enthalpy (H2) in this situation?
- Can I use the compressor's displacement and RPM to estimate the mass flow rate, and then use power input to find enthalpy increase?
- Are there any tools or databases you recommend for getting R134a property data?
Any help or guidance would be greatly appreciated!