Frecooling
In audited companies, we often face specific requirements concerning the supply of cooling to the technological process. The need to cool the injection molds, which requires the supply of coolant at low temperature, may serve as an example. Possibility of using free cooling in chilled- water units is worth considering.
There were 7 chillers in the audited facility, located directly at the production hall, with the total cooling capacity of 1.6 MW. The system was equipped with a dry cooler working in the free cooling function.
As a part of the company's efficiency audit, the technical and economic capacity of the free cooling system in the plant was analyzed. So far, the chilled water production system had been supported with a small dry cooler which was manually switched on when the air temperature dropped below 5 Celsius degrees.
Construction of a complete free cooling system, which would allow for the use of cooling energy contained in the air to cover the cooling demand of the plant, was assumed in the analysis. Due to the age of the device and the degree of exploitation, the assumption is that the currently installed free cooling system will not be used.
On analyzing the expansion of the free cooling system in the plant, the presumption was made that it switched on at an outside temperature of less than or equal to 4 ° C.
The analysis of the system operation was performed on the basis of historical data on average temperatures for the area in which the plant is located.
After performing the analysis, it turned out that reconstruction of the system would reduce the electricity consumption by about 1 GWh and generate savings of about USD 85 thousand, with investment expenditures of about USD 121 thousand.
Capital group
Company data
DB ENERGY SA
Al. Armii Krajowej 45
50-541 Wrocław
NIP: 894 299 53 75
REGON: 021249140
Contact
+48 71 337 13 25 biuro@dbenergy.plfor general purposes sprzedaz@dbenergy.plfor commercial purposes
In 2014 the R&D department started to work in our company. We design solutions to improve energy efficiency in industry.
On 22 June 2016, DB Energy signed an agreement with the National Centre for Research and Development to co-finance R&D work for a project called "Development of an innovative drive diagnostics system (DiagSys) based on electrical signal measurements characteristic of mechanical damage to rotating machine components, together with a specialized analyzer of machine operating status and efficiency (APPS 3)".
The project is financed under the Intelligent Development Operational Programme 2014-2020, under sub-measure 1.1.1. "Industrial research and development work carried out by enterprises". No. of the competition: 1/1.1.1/2015. Value of the project 5 974 021.85 PLN. Value of co-financing 3,727,676.11 PLN.
The aim is to develop a system for the diagnosis of rotating machines (DiagSys system), which will be based on the use of power measurements and on-line access to an expert database.
