|
Title:
|
|
Thermochemische route voor opslag en transport van warmte
|
|
|
|
Author(s):
|
|
|
|
|
|
Published by:
|
Publication date:
|
|
ECN
Energy Efficiency in Industry
|
1-2-1999
|
|
|
|
ECN report number:
|
Document type:
|
|
ECN-C--99-012
|
ECN publication
|
|
|
|
Number of pages:
|
Full text:
|
|
128
|
Download PDF
|
Abstract:
The adoption of efficient heat storage and transport technologies canresult in savings of industrial energy consumption for heat and cold
production. Heat transport is necessary in order to accommodate differences
between the locations where heat is produced and where heat is required.
Conventional heat transport systems, e.g. hot water district heating, suffer
from sensible heat energy losses, require expensive insulation and are
restricted in transport distance. An advanced system, e.g. via a
thermochemical route, should involve minimum energy loss during transport
since the sensible heat that is lost is only a minor amount compared to the
energy content in the chemical bonds. There is no need for insulation and
heat can be transported through simple ducts. A literature investigation of
thermochemical reactions for heat transport has been performed and an
evaluation shows that the isopropanol -> acetone hydrogen reaction is the
most promising organic reaction in the 80-120C temperature range. A technical
system study by means of ASPEN PLUS flowsheeting has been carried out for a
50 km heat transport distance and for several conditions (temperature,
pressure). An optimal system has an enthalpy efficiency of 27 % and a COP of
5.1. However, an economical evaluation shows no advantage over conventional
heat transport. A systematic study concerning alternative thermochemical
reactions has yielded five candidate reactions in the liquid state, which
need additional research. 10 refs.
Back to List