Price Analysis of Different Options for Thermal Insulation of Vasil Levski National Military University Headquarters

Scientific Bulletin Vol. XXII No 2(44) 2017

PRICE ANALYSIS OF DIFFERENT OPTIONS FOR THERMAL INSULATION OF VASIL LEVSKI NATIONAL MILITARY UNIVERSITY HEADQUARTERS

VASIL LEVSKI NATIONAL MILITARY UNIVERSITY, VELIKO TARNOVO, BULGARIA

ABSTRACT The paper presents the maintenance of the buildings property of MOD and BA. In perspective, the maintenance of a building can increase the efficiency level significantly, as well as part of it being given under rent to generate income for the budget of MOD. Comparative price analysis of different options and suboptions for thermal insulation of Vasil Levski National Military University Headquarters has been made and the most cost-effective option has been determined.

KEYWORDS: Maintenance, buildings, MOD, BA, thermal insulation

1. Introduction 2. Summary As a result of the long-lasting The existing budgetary restrictions exploitation and normal amortization of the lead to problems in other functional spheres buildings within the BA units, many of of military logistics. In this regard some them need basic renovation and fulfillment researchers from the NMU “Vasil Levski” of the requirements for energy, construction search for effective solutions for service and installation efficiency. These activities provision (Glushkov, 2017). could prolong buildings exploitation for The frequent amendments of the period not less than 60 years. The expected regulatory framework related to building savings and financial resources could be energy efficiency create preconditions for used for other purposes or for constructing different requirements regarding the new buildings for the Army (Filipov, 2016). thermophysical characteristics of newly The purpose of this report is to constructed and existing buildings property make comparative price analysis of of the BA and MoD. Public buildings different options for thermal insulation of within the category administrative buildings the façade area of Vasil Levski National such as the building of the NMU “Vasil Military University Headquarters and to Levski” Headquarters – Veliko Tarnovo are find the most appropriate option to be subject to special attention under the applied. Energy Performance of Buildings Directiv, DOI: 10.1515/bsaft-2017-0011 © 2017. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

which stipulates that public administration has basement, ground-floor and one floor. buildings shall have almost zero energy Section „C” has basement and ground-floor. consumption level (Binev, 2015). The outer walls are made of bricks and One of the methods for reducing the most of them have stone lining. The built- heating/cooling costs in the Headquarters up area of the building is 972 sq.m. and the building of NMU “Vasil Levski” – Veliko total built-up area is 6444 sq.m. Tarnovo in the conditions of financial For the purposes of this study are deficit is to perform energy efficiency accepted reconstruction values with examination of the building and to define ventilated façade system with finishing energy efficiency measures. layer of HPL panels – 180 BGN/sq.m. for The examined building was the façade area and also for the same system constructed in 1979 as NMU “Vasil Levski” but with finishing layer of aluminum Headquarters – Veliko Tarnovo and it has lamellas – 120 BGN/sq.m. for the facade been used for this purpose until now. area. For thermal insulation systems with According to the climate zones in the insulation material on the basis of Republic of Bulgaria the town of Veliko polystyrene and mineral wool applied Tarnovo pertains to Climate zone 4 Veliko directly on the walls ETICS are accepted Tarnovo, Pleven, which has the following the average costs for one packet of climate features: insulation – 60 BGN/sq.m. for polystyrene  Average altitude 280 m; and 70 BGN/sq.m. for mineral wool.  Duration of the heating season 191 Considering the average market prices the days; beginning: 16 October; end: 23 April; costs are in the range of 45-55 BGN/sq.m. heating degree days (DD) – 2700 at average only for the materials. Market prices are indoor temperature 19 °С (Ordinance usually determined according to the 15/28.07.2005 to the Energy Act); complexity and volume of the order,  Calculated outdoor temperature: material costs, locality of the construction –17 °С (Ordinance 15/2005) site, etc. (Mihaylova, 2015). As basic climate data are used the With a view to determine the most measured average monthly temperatures of expedient option for renovation of the the air in the populated area for the building facades we shall examine and examined period, as well as representative analyze the price aspect of 4 main options average monthly temperatures of the air for with different suboptions of the thermal climate zone 4 (National Institute of insulation materials used for renovation of Meteorology and Hydrology, 2016). the NMU “Vasil Levski” Headquarters In order to determine the most cost- facades: effective solution for thermal insulation of  Option I – Renovation entirely with the NMU “Vasil Levski” Headquarters thermal insulation systems with insulation facades, calculations have been made for material applied directly on the walls, the applying insulation on the facade walls with so called ETICS systems wit two regard to the different options and suboptions: suboptions for renovation of facades.  Option IA – Renovation entirely For this purpose it is necessary to specify with ETICS thermal insulation definite features of the building: systems with insulation material The building is a massive reinforced polystyrene applied directly on the concrete construction and the NMU “Vasil walls; Levski” Headquarters is situated inside.  Option IB – Renovation entirely It consists of three interconnected sections. with ETICS thermal insulation systems Section „A” is a thirteen-floor building with with insulation material mineral basement and ground-floor. Section „B” wool applied directly on the walls;

 Option II – Renovation entirely  Option IV – Renovation with with a ventilated facade system with two ETICS on the south facade and a ventilated suboptions: facade system on the north, east and west  Option IIA – Renovation entirely facades: with a ventilated façade system  Option IVA – Renovation with with finishing layer of HPL panels; ETICS with polystyrene on the  Option IIB – Renovation entirely south facade and a ventilated with a ventilated facade system with facade system with finishing layer finishing layer of aluminum panels; of aluminum panels on the north,  Option III – Renovation with east and west facades; ETICS on the east, west and south facades  Option IVB – Renovtion with and a ventilated façade system on the north ETICS with polystyrene on the facade, with four suboptions: south facade and a ventilated  Option IIIA – Renovation with facade system with finishing layer ETICS with polystyrene on the of HPL panels on the north, east east, west and south facades and a and west facades; ventilated facade system with  Option IVC – Renovation with finishing layer of aluminum panels ETICS with mineral wool on the on the north facade; south facade and a ventilated  Option IIIB – Renovation with façade system with finishing layer ETICS with polystyrene on the of aluminum panels on the north, east, west and south facades and a east and west facades; ventilated facade system with  Option IVD – Renovation with finishing layer of HPL panels on ETICS with mineral wool on the the north facade; south facade and a ventilated  Option IIIC – Renovation with facade system with finishing layer ETICS with mineral wool on the of HPL panels on the north, east east, west and south facades and a and west facades. ventilated facade system with The above mentioned options for finishing layer of aluminum panels buildings thermal insulation are applicable on the north facade; for external insulation which is appropriate  Option IIID – Renovation with in this case considering the internal ETICS with mineral wool on the disposition of the building, the security east, west and south facades and a zones and the specific activities of the ventilated facade system with Headquarters staff; the results of the finishing layer of HPL panels on calculations are illustrated on the diagram the north facade; on Figure no. 1.

Figure no. 1 Results of the proposed options and suboptions for applying thermal insulation on the NMU “Vasil Levski” Headquarters facades and the prices for a built-up area

The following conclusions could be an ETICS system with polystyrene on all drawn from the calculations made for the the facades. Using the savings from the NMU “Vasil Levski” Headquarters: energy-efficiency measures for the first The highest price for the building building, the other buildings could be façade renovation refers to the solution gradually renovated using the option to under II A Option, a ventilated facade apply an ETICS system on the south, west system with finishing layer of HPL panels and east facades and ventilated systems with a total price of 82,15 BGN/sq.m. with finishing layer of aluminum panels on which is unacceptable option. the north, east and west facades, which Considering the price indicator, have the longest operational lifetime. the most cost-effective solution is with ETICS on all the facades under I A 3. Conclusion Option using polystyrene on all the Maintenance and renovation of the façade walls of the building where the military infrastructure in compliance with total price is 27,84 BGN/sq.m. the requirements for good quality of life With regard to the other options necessitates the establishment of a long- IV D – 37,55 BGN/sq.m., IV C – term vision for its development. Such a 44,27 BGN/sq.m., IV В – 34,11 BGN/sq.m., vision could be realized through long-term IV А – 40,81 BGN/sq.m. the prices are and medium-term planning of the processes lower when the ventilated facade system is and making the military infrastructure applied only on the north facade. modern and mutli-functional, flexible and Considering the fact that the operational mobile in response to the new missions and lifetime of the ETICS systems is between tasks of the Armed Forces and collective 10 and 15 years and those of the ventilated responsibility (Filipov, 2010). facades is longer (20-25), in the long term After renovation military buildings the prices would be almost equal. regain their original indicators for seismic For as much as there are many resistance, meet the contemporary buildings at the NMU “Vasil Levski” that regulatory requirements for exploitation by need to be renovated, it could be taken a servicemen and become energy-efficient. decision to renovate the first building using As to achieve high quality of military

buildings renovation, it is necessary to use these options based on the reasonable only materials from proved producers and balance between quality and costs specialists with the necessary experience (Stefanov, 2017). and qualification for the construction works Increasing the energy, construction, (Filipov, 2016). installation and operational efficiency of The choice of a solution for building the existing military infrastructure objects renovation shall be based on the cost- calls for complete renovation and has analysis of the different options for activity important socio-economic and purely performance and objective comparison of financial consequences.

REFERENCES

Binev, I. (2015). Analysis and Evaluation of Public Buildings Energy Efficiency, Dissertation, Plovdiv, Bulgaria: University of Food Technologies. Filipov, S. (2010). Opportunities for Improvement of the Military Infrastructure Maintenance and Exploitation, Dissertation, Sofia: MA “G.S. Rakovski”. Filipov, S. (2016). Contemporary Challenges and Opportunities for Development of Military Infrastructure, Related to Increasing Construction Reliability and Improving Living Conditions, Monograph, Rousse, Bulgaria: Avant-Garde print. Glushkov, P. (2017). A study of nutrition and the nutritional status of servicemen, rd assessed on the basis of anthropometric indicators, The 23 International Conference Knowledge-Based Organization, Vol. XXIII, No 2, 298-302. Mihaylova, K. (2015) Researches on Residential Buildings Renovation, Dissertation, Sofia: University of Architecture, Construction and Geodesy. National Institute of Meteorology and Hydrology. (2016). Monthly hydrometerology bulletin, Sofia: Bulgarian Academy of Sciences. Stefanov, N. (2017). Analysis of the Use of Outsourcing Services for Maintenance and Repair of the Equipment and Armament Available in the Structures of the Bulgarian Armed Forces, The 23rd International Conference Knowledge-Based Organization, Vol. XXIII, No 1, 467-472.