Abstract
Personal cooling systems (PCS) enable 10-30% saving in building energy consumption, which takes up 41% of US primary energy. An innovative PCS called Roving Comforter (RoCo) uses R134a based vapour compression cycle (VCC) to provide cooling. To reduce environmental impact, it is necessary to evaluate RoCo performance with low GWP refrigerants. The condenser heat of VCC is stored in a phase change material (PCM) storage, which limits the cooling operation duration. A recharge operation is conducted after the cooling operation. A validated dynamic model (using Modelica) of VCC integrated with PCM is used to simulate the cooling operation with R32, R1234yf, R1234ze(E) and R290. The change in COP is +8%, -12% and -5% and -5% with R32, R1234yf, R1234ze (E) and R290 respectively. Dynamic pressure, mass flow rates, temperature and power are presented.
Original language | English |
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Title of host publication | ICR 2019 - 25th IIR International Congress of Refrigeration |
Editors | Vasile Minea |
Publisher | International Institute of Refrigeration |
Pages | 4010-4017 |
Number of pages | 8 |
ISBN (Electronic) | 9782362150357 |
DOIs | |
State | Published - 2019 |
Externally published | Yes |
Event | 25th IIR International Congress of Refrigeration, ICR 2019 - Montreal, Canada Duration: Aug 24 2019 → Aug 30 2019 |
Publication series
Name | Refrigeration Science and Technology |
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Volume | 2019-August |
ISSN (Print) | 0151-1637 |
Conference
Conference | 25th IIR International Congress of Refrigeration, ICR 2019 |
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Country/Territory | Canada |
City | Montreal |
Period | 08/24/19 → 08/30/19 |
Funding
This research was supported by the Advanced Research Projects Agency - Energy (ARPA-E) under Award DE-AR0000530 and Center for Environmental Energy Engineering (CEEE). The authors acknowledge the support of the team members of the Roving Comforter Project.
Keywords
- Low GWP Refrigerants
- PCM
- Personal Cooling
- Refrigeration