Abstract
This study compared constant water bath performances of conventional water-cooled refrigerator andelectric heater with an air-cooled VRF chiller and electric heater equipped with optimal controlalgorithm. In heating mode, the air cooled VRF chiller and electric heater combination reduced the settemperature arrival time by an average of 42 minutes, and energy was also reduced by 18%. In coolingmode, the two systems took 70 minutes to reach the set temperature and showed no difference. Energywas reduced by 33.5% with the new system. For constant temperature maintaining experiment, afterreaching the set temperature of 15°C, 20°C and 22°C, temperature deviations were all in the range of–0.2°C to +0.1°C. Energy was reduced by an average of 84.9%. Through this study, possibility ofprecise temperature control by an air cooled VRF chiller system was confirmed.
| Translated title of the contribution | Precision Control of Water Bath Temperature using Air Cooled Variable Refrigerant Flow Chiller |
|---|---|
| Original language | Korean |
| Pages (from-to) | 27-34 |
| Number of pages | 8 |
| Journal | 한국지열에너지학회논문집 |
| Volume | 14 |
| Issue number | 4 |
| DOIs | |
| State | Published - Dec 2018 |