Abstract
The paraldehyde/acetaldehyde (Pa/A) chemical heat pump is used as a cooling system. The present study investigates depolymerization of paraldehyde for a chemical heat pump cycle. The depolymerization rate of paraldehyde was measured in a range from 286 K to 303 K on an acid resin catalyst (Amberlyst 15E). The rate determining step of the depolymerization is the paraldehyde ring-opening step on the cataly t. The depolymerization rate equation on the solid catalyst is described by the Langmuir-Hinshelwood kinetic model. The cooling rate of the Pa/A system at 286 K is estimated from the reaction rate equation. The cooling rate is 10 kW per unit catalyst-weight and higher than other CHPs. The coefficient of performance of the Pa/A system is 6.3.
| Original language | English |
|---|---|
| Pages (from-to) | 374-380 |
| Number of pages | 7 |
| Journal | Journal of Chemical Engineering of Japan |
| Volume | 31 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Jan 1 1998 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Chemical Engineering(all)