Abstract
Adsorption refrigeration systems are able to work with heat sources of
temperature starting with 50°C. The aim of the article is to determine
whether in terms of technical and economic issues adsorption refrigeration
equipment can work as elements that produce cold using hot water from the
district heating network. For this purpose, examined was the work of the
adsorption air conditioning equipment cooperating with drycooler, and the
opportunities offered by the district heating network in Warsaw during the
summer. It turns out that the efficiency of the adsorption device from the
economic perspective is not sufficient for production of cold even during
the transitional period. The main problem is not the low temperature of
the water supply, but the large difference between the coefficients of
performance, COPs, of adsorption device and a traditional compressor air
conditioning unit. When outside air temperature is 25°C, the COP of the
compressor type reaches a value of 4.49, whereas that of the adsorption
device in the same conditions is 0.14. The ratio of the COPs is 32. At the
same time ratio between the price of 1 kWh of electric power and 1 kWh of
heat is only 2.85. Adsorption refrigeration equipment to be able to
compete with compressor devices, should feature COPads efficiency to be
greater than 1.52. At such a low driving temperature and even changing the
drycooler into the evaporative cooler it is not currently possible to
achieve.
Go to article