The Effects of Mass Flow Rate on the Performance of a Microchannel Evaporator Using CO2 Refrigerant
| Autor: | Thanhtrung Dang, Tronghieu Nguyen |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0209 industrial biotechnology
Microchannel Materials science business.industry 020209 energy Analytical chemistry 02 engineering and technology Refrigerant 020901 industrial engineering & automation Air conditioning Heat transfer 0202 electrical engineering electronic engineering information engineering Mass flow rate Current (fluid) business Gas compressor Evaporator |
| Zdroj: | 2018 4th International Conference on Green Technology and Sustainable Development (GTSD). |
| Popis: | This paper presented the effects of the $CO_{2}$ mass flow rate on the performance of a $CO_{2}$ air conditioning system using the transcritical mode and microchannel evaporator. The $CO_{2}$ air conditioner was operated under the ambient temperature of $3\theta.5^{\mathrm {o}}C$. The $CO_{2}$ compressor was made by DORIN, so the mass flow rate was determined by the DORIN software. The current difference and the mass flow rate difference between Real results and Dorin results are small as varying pressure difference. While the mass flow rate increases from $1\theta 9.6$ to 116. $2kglh$, the COP increases slightly from 4.2 to 5.15 and when the mass flow rate increases 117.4 and 121. $4kglh$, the COP goes up substantially from 5.45 to 7.9. In addition, the cooler outlet temperature increases from 32.3 to $36.5^{\mathrm {o}}C$, the COP decreases sharply from 7.9 to 4.2. |
| Databáze: | OpenAIRE |
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