Ilaria Ariolfo Andrea Alessio Politecnico di Torino Prof. P. A. Croset
agriculture loft unit
Torino, Italy
mixed use of blocks for a more sustainable urban culture. green densification on roof of lower buildings and pavillons
Porta Susa Station New central station City centre
Project area
Porta Nuova Station
flexible unit working and living open
space with
mezzanine. inner zone is adaptable and enlargeble. multifuntional
light
structure with double skin opaque polycarbonate panels reflecting solar radiation
openable structure for free-cooling ventilation
SUMMER SITUATION
loose fill ESP recycled insulation
urban inner agriculture
Plan and Section 1:100
energy saving strategy
altitude angle 68,13° azimuth angle 1,36° h 12:30
gather rain water for the greenhouse and for heating
altitude angle 42,12° azimuth angle 81,29° h 09:00
collector circuit. wind provides electricity from the integrated Windbelt low-tech system.
altitude angle 21,26° azimuth angle 0,14° h 12:30
double skin + solar radiation free internal warming
be r
altitude angle 21,92° azimuth angle -101,71° h 18:00
De ce m
21 st
June
altitude angle 6,52° azimuth angle 46,79° h 09:00
through the sun
21 s
t
340KWh
altitude angle 6,15° azimuth angle -47,35° h 16:00
260KWh
greenhouse comfort benefits
WINTER SITUATION
transparent polycarbonate roof panels
Torino latitude 45°3’ N longitude 7°40’ E altitude 239m climatic condition Tm winter= 4° C Tm summer = 25° C
green open porch
Plan and Section 1:100
FUNCTIONAL UNITS
NATURAL LIGHT
20% direct 80% indirect
35% direct 65% indirect
Living and Working 65% direct 35% indirect
Area: 30 m2 65% direct 35% indirect 100% direct 0% indirect
Kitchen Bathroom Mezzanine
Living and Working Area: 15 + 15 m2 Mezzanine enlargement Moveble stair
Food Production Area: 15 + 3 m2 Greenhouse Urban agriculture
Energy Production Area: 18 m2 Porch Windbelt collectors
extruded frame from recycled aluminum -95% energy consumption
STRUCTURAL DETAIL 1 2
loose fill styrofoam insulation d:600mm U:0,05 W/m2K opaque outer polycarbonate panel d:12mm inner wood panel d:15mm
Section 1
recycled aluminium structural frame d:50mm
Section 2
transparent outer and inner polycarbonate openable panel d:12mm
recycled aluminium openable window frame d:50mm feet support h:100/200mm
extruded polycarbonate and ESP loose fill insulation from recycled plastic -65% energy consumption
Sections 1:20
energy production
Windbelt system is integrated in the aluminum frame structure and produces electricity from passing through airstream.
Heat exchanger
Rain gather
Roof solar circuit
Underfloor heating
WC COMPOST
urban agriculture
Windbelt system
- +
Total square meter Opaque partition transmittance Transparent partition transmittance
Windbelt Humdinger wind energy, LLC Size: 1m x 1m x 0,05m Rated power: +100 W
Energy balance Greenhouse total benefit Windbelt total benefit
75 รท 110 m2 0,04 W/m2K 2,2 W/m2K 2,3 kW
1736 kWh 2500 W
Calculation annex Opaque partition: opaque exterior polycarbonate panel (12 mm R: 0,45 m2K/W) loose fill Styrofoam insulation recycled from packaging stuffs (ESP insulation 600 mm k: 0,03 W/mK) inner wood panel (15 mm k: 0,08 W/mK)
Torino, Italy
Climatic zone E
Regulation Requirements: U exterior vertical partitions: 0,37 W/m2K
Rt = 0,13 + 0,45 + (0,6/0,03)+ (0,015/0,08)+0,04 = 21 m2K/W U = 1/21 = 0,04 W/m2K
U exterior horizontal partitions: 0,38/0,32 W/m2K
Opaque back facade of the unit: sandwich ESP panel with inner and outer polycarbonate skin (15 cm U: 0,1W/m2K)
U exterior window partitions: 2,5 W/m2K
Transparent greenhouse partition: double transparent polycarbonate panel (12 mm R: 0,45 m2K/W) U = 2,2 W/m2K Area of opaque vertical and horizontal partitions: 120 m2 Area of opaque back facade: 28 m2 Area of transparent partition: 60 m2 ENERGY BALANCE: Winter situation Te: 4° C Ti: 20° C Q = 120・0,04・(20-4) + 28・0,1・(20-4) + 60・2,2・(20-4) = 2232 W = 2,2 kW DISPERSION FOR VENTILATION 30Kg/h pers = 0,008 Kg/s Q = 0,08・1000・(20-4) = 128 W The total requirement of energy is 2,3 kW but it is important to consider that there is a gain from the greenhouse system. This benefit is calculated with the aid of an informatics program: RESULTS of SOLVER Program Location: TO - TORINO Zone: E Temperature internal: 20° C Month T external T greenhouse [° C] [° C] October 12,60 29,24 November 6,80 21,42 December 2,00 18,29 January 1,40 17,67 February 3,20 22,72 Mars 8,20 30,32 April 12,70 37,68 TOTAL
Greenhouse total benefit: 6250 MJ ≃ 1736 kWh Looking at the numbers, it can be seen that, in winter months the system maintains a balance between losses and heat gains. In the colder months, the greater energy demand is met by the integrated low-cost wind collectors (Windbelt). This energy helps the radiant heating system of the loft unit.
Windbelt Humdinger, wind energy, LLC Size: 1 m x 1 m x 0,05 m Rated power: 100 W Area of Windbelt in the project (porch facades): 25 m2 Total Power: 2500 W
Losses without greenhouse [MJ] 259 660 700 950 990 850 239 4648
Gains with greenhouse[MJ] 627 829 690 830 981 1324 969 6250
The creating process of this space is based on the recycle materials and energies. The rainwater is gather and it is heated by a low-tech roof circuit which takes advantage of the solar radiation. This system meets the requirements of hot water and heating system. In the coldest periods these requirements could be more elevated, so the Windbelt will helps the alu conditioning system.