Dynamic Simulation of a Large Scale Pulsed Load Helium Refrigerator
Abstract
A large scale Helium refrigerator is completely designed to cope with pulsed heat load varying from 18 kW to 24 kW at a period of 1800 s. A dedicated process is defined at the cold end to allow a smooth damping of the cycle parameters (flow, pressure, temperature) in order to get quasi-steady conditions applied to the turbines and compressor station. All the equipment and components including the PID control loops are defined and parameterized in order to optimize the control. Within HYSYS dynamic simulation environment, the overall system with transient heat load applied to the liquid helium bath is simulated satisfactorily confirming the realistic and quasi steady operating conditions.
- Publication:
-
Transactions of the Cryogenic Engineering Conference - CEC: Advances in Cryogenic Engineering
- Pub Date:
- April 2010
- DOI:
- 10.1063/1.3422322
- Bibcode:
- 2010AIPC.1218.1453B
- Keywords:
-
- refrigerators;
- compressors;
- heat transfer;
- thermal conductivity;
- 07.20.Mc;
- 84.30.Qi;
- 44.40.+a;
- 72.15.Eb;
- Cryogenics;
- refrigerators low-temperature detectors and other low-temperature equipment;
- Modulators and demodulators;
- discriminators comparators mixers limiters and compressors;
- Thermal radiation;
- Electrical and thermal conduction in crystalline metals and alloys