A comparative analysis of economic efficiency of application of three types of insulation at thermal rehabilitation of the enclosing structures of residential buildings
The work was performed by specialists of the sector of economic methods of management of construction SE “RIBP” under the leadership of C. E. S., senior researcher, associate Professor Vakhovych Inna Volodymyrivna.
Customers: Chernivtsi Council and PE “Ukrteploservice” based on the agreement No. 101 dated 22 August 2007 and a supplementary agreement No. 1 to this agreement dated 31.10.2007.
The aim of this work was to analyze the economic efficiency of thermal rehabilitation of external enclosing structures was conducted for three types of insulation – foam, mineral wool and expanded polystyrene on the example of 9-storey residential building series 135 and 5-storey residential building series 67.
With this purpose we have analyzed a large array of information regarding the experience of using these heaters, studied various factors which affected the results.
During performing the research works it was conducted:
– analysis of indicators of economic efficiency of thermal rehabilitation of walling on articles direct costs;
– analysis of traditional indicators of economic efficiency;
– analysis of indicators of economic efficiency determined according to income capitalization.
Indicators of economic efficiency of thermal rehabilitation of external enclosing structures designed for a base gas price – 686 UAH. for 1,000 cubic meters and, given its growth.
In the analysis of economic efficiency it was taken into account that selected insulation materials have different service life. The calculations are performed for 50 years operation of the house after carrying out thermal rehabilitation.
In the result of the analysis of economic efficiency of thermal rehabilitation of external enclosing structures the three types of insulation, it was found that the most cost-effective option of insulation with polyurethane foam. This trend continues with increasing gas prices.