APPLICATION OF ENERGY RENEWAL PROJECT WITH EU-FUND CO-FINANCE (PROJECT IN PREPARATION)

After the co-owner's decision, we submitted the application of the building "Kamenjak 3 in Pula" to the tender for energy renovation of multi-apartment buildings NPOO.C7.2.I1.01.

The main goal of the energy renovation project of the apartment building at Kamenjak 3, in Pula is to present the current state of the building and provide construction measures to improve the building's energy efficiency, which affect the improvement of conditions in the building for all users, as well as the reduction of heating and cooling costs.

The purpose of the building is predominantly residential. The residential building has a square floor plan.

The net area of ​​the heated part of the building is 4,982.99 m2, while the gross area of ​​the heated part is equal to 6,188.47 m2.

The outer shell of the building consists of reinforced concrete walls with a thickness of d=40 cm on the ground floor and basement, and d=20 cm on the other floors, plastered only on the inside. The walls on the northern facade, and on the part of the eastern and western facades, which are on the border of the heated and outdoor space, are covered with thermal insulation EPS with a thickness of e=5 cm.

The wall facing the corridor is made of reinforced concrete with a thickness of d=20cm, and plastered on both sides with lime-cement plaster. The total thickness of the wall towards the corridor is d=24cm. The floor on the ground is made as a concrete slab with a total thickness of d=14 cm, on which a cement screed d=3 cm is placed, which is also the final layer. The flat roof of the building is a reinforced concrete slab with a thickness of 12 cm, on top of which are placed falling concrete with a thickness of d=6 cm and waterproofing. The entrance door to the building is aluminum.

The building has a fire escape staircase, for evacuation in case of fire, which borders the corridor separated by a black metal lock with two entrances/exits. On the fire escape staircase on each floor there is an open terrace for smoke evacuation in case of fire.

The building is heated locally. The apartments have a heating system based on air conditioning devices and thermoaccumulation stoves, and partly on solid and gaseous fuels (wood and gas).

The existing building is of energy class C, with annual primary energy (Eprim) for heating with a starting value of 525,239.51 kWh/a. The target value after energy renovation would be (Eprim) = 359,966.58 kWh/a, which would be a contribution = 165,272.93 kWh/a or 31.47%.

Annual CO2 emission before energy renewal = 90,253.66 kg/year. annual CO2 emission after energy renovation = 59,262.79 kg/year. which is the contribution to the reduction of CO2 emissions= -30,990.87 kg/year which is = 34.34%.

In preparation, the existing thermal insulation will be removed from the external walls and ceilings made of EPS with a thickness of d=5cm, complete with a solid base. The height of the facade is up to 40 meters. The layers are removed to the load-bearing base of reinforced concrete and aerated concrete. The removed material will be adequately disposed of, protected, loaded and taken to the landfill for EPS recycling and further use for floor thermal insulation.

The measures foreseen in this energy renovation project are: performing thermal insulation on the external walls by making the ETICS system according to the manufacturer's instructions, all preparations: stone mineral wool d=8cm for the walls bordering the heated space, stone mineral wool d=12cm and d=3cm for view of the ceiling on the ground floor of the building, stone mineral wool with a thickness of d=5m for walls that do not border the heated space, stone wool with a thickness of d=2-3cm for processing the slats around the windows.

Thermal insulation of a flat walk-through roof-terrace with hard stone mineral wool for flat roofs d=10cm, the insulation is installed in two layers with folded flaps while following the existing drops on the flat roof. Before that, a vapor barrier made of synthetic foil based on high-density polyethylene d=0.15mm is installed.

The existing wooden joinery will be partially replaced with new PVC joinery, with an interrupted thermal bridge, sealed with all fashion pieces and PVC profiles that have the ability to collect and drain condensate. With external protection from the sun (blinds), the glazing will be made with triple IZO glass with gaseous filling, low-e coating and triple sealing with a defined maximum coefficient of heat transfer for the entire window Uw=1.10w/m2K, while the coefficient for the glass is equal to Ug=0.70W/m2k.

Carpentry installation should be carried out exclusively using the Ral installation method, where special sealing tapes are used, intended exclusively for this type of sealing. The color of the joinery is white.

After the implementation of the measures foreseen in the Main project of energy renovation of the multi-apartment building, energy consumption will be significantly reduced and the energy class will be A, with the predicted savings according to budget data from the main project.

The purpose of the energy renovation of the apartment building is to improve conditions in the building for all users, as well as to reduce maintenance and heating costs, as well as to reduce pollution and emissions of harmful CO2. The existing building was built in 1978, and has great potential for the implementation of energy efficiency measures, which will be carried out in accordance with the Main Project of Energy Renovation of the building at Kamenjak 3, Pula. Currently, the building in its environment looks aesthetically disordered.

The share of energy from renewable sources in the annual delivered energy before energy renewal, initial value: = 36.24%. Share of energy from renewable sources in the annual delivered energy after energy renewal, target value: = 23.99%.

Increase in the share of energy from renewable sources in the annual delivered energy, contribution: = -12.25%.

Existing condition of the building:

Currently, the building, according to budgets, has a high energy consumption and emits a large amount of CO2.

The roof is not thermally insulated, and the facade is partially insulated with EPS, which has become hygroscopic due to its longevity (46 years) and lost its thermal insulation properties.

The building envelope on a larger surface does not have any thermal insulation, which causes large energy losses when heating/cooling the space.

The carpentry of the building is mostly wooden and due to the time limit, it has become permeable.

Due to the current state of the facade and roof, leaks, moisture, condensate and muff appear in the heated spaces, which makes the residential microlocation unhealthy.

The purpose of the building is predominantly residential. The residential building has a square floor plan. In the basement of the building there are storage rooms (unheated part).

The outer shell of the building consists of reinforced concrete walls with a thickness of d=40 cm on the ground floor and basement, and d=20 cm on the other floors, plastered only on the inside. The walls on the north facade, and on the part of the east and west facades, which are on the border of the heated and outdoor space, are coated with thermal insulation EPS with a thickness of e=5 cm.

The wall facing the corridor is made of reinforced concrete with a thickness of d=20cm, and plastered on both sides with lime-cement plaster. The total thickness of the wall towards the corridor is d=24cm. The floor on the ground is made as a concrete slab with a total thickness of d=14 cm, on which a cement screed d=3 cm is placed, which is also the final layer. The flat roof of the building is a reinforced concrete slab with a thickness of 12 cm, on top of which are placed falling concrete with a thickness of d=6 cm and waterproofing.

The building is heated locally. The apartments have a heating system based on air conditioning devices and thermoaccumulation stoves, and partly on solid and gaseous fuels (wood and gas).

WE ARE ASKING FOR YOUR HELP IN PERFORMING THE PROJECT IMPLEMENTATION WORKS!

WE ARE LOOKING FOR:

• The contractor for the production of the facade system
• The contractor for the construction of the tremo insulating roof of the building
• Contractor for making PVC joinery
• Contractor for removal and installation of air conditioners
• An authorized company for work supervision
• A company for the production of billboards

At your request, we deliver project cost estimates.