Characteristics of Chemical Heat Pump through Kinetic Analysis of Paraldehyde Depolymerization

Haruo Kawasaki, Atsushi Kanzawa, Takayuki Watanabe

Research output: Contribution to journalArticle

5 Citations (Scopus)

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 languageEnglish
Pages (from-to)374-380
Number of pages7
JournalJournal of Chemical Engineering of Japan
Volume31
Issue number3
DOIs
Publication statusPublished - Jan 1 1998
Externally publishedYes

Fingerprint

Paraldehyde
Depolymerization
Acetaldehyde
Pumps
Kinetics
Catalysts
Cooling
Cooling systems
Reaction rates
Resins
Acids
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Characteristics of Chemical Heat Pump through Kinetic Analysis of Paraldehyde Depolymerization. / Kawasaki, Haruo; Kanzawa, Atsushi; Watanabe, Takayuki.

In: Journal of Chemical Engineering of Japan, Vol. 31, No. 3, 01.01.1998, p. 374-380.

Research output: Contribution to journalArticle

@article{9e3f875d84f642f7a5ff70322887cc50,
title = "Characteristics of Chemical Heat Pump through Kinetic Analysis of Paraldehyde Depolymerization",
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.",
author = "Haruo Kawasaki and Atsushi Kanzawa and Takayuki Watanabe",
year = "1998",
month = "1",
day = "1",
doi = "10.1252/jcej.31.374",
language = "English",
volume = "31",
pages = "374--380",
journal = "Journal of Chemical Engineering of Japan",
issn = "0021-9592",
publisher = "Society of Chemical Engineers, Japan",
number = "3",

}

TY - JOUR

T1 - Characteristics of Chemical Heat Pump through Kinetic Analysis of Paraldehyde Depolymerization

AU - Kawasaki, Haruo

AU - Kanzawa, Atsushi

AU - Watanabe, Takayuki

PY - 1998/1/1

Y1 - 1998/1/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=3543084979&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=3543084979&partnerID=8YFLogxK

U2 - 10.1252/jcej.31.374

DO - 10.1252/jcej.31.374

M3 - Article

AN - SCOPUS:3543084979

VL - 31

SP - 374

EP - 380

JO - Journal of Chemical Engineering of Japan

JF - Journal of Chemical Engineering of Japan

SN - 0021-9592

IS - 3

ER -