ZEMedS: Implementation

Implementation Case:“Montsacopa” High School, OLOT, Catalonia, 

Spain.

General data“Montsacopa” High School, OLOT, Catalonia, Spain.

Name of the School

“Montsacopa” High School

Type of school 

High School and professional training

Number of students Owner

Location

23, Joan de Cabirol Avenue17800 OLOT, Girona.

Year of construction 

public

1970

3

677

Building typology  Heated area (m2 )

Heating degree days (base 18):  2.255

Cooling degree days (base 26):     307

Site

Rural plane

4

2 floors building 3.945,67 m2

General data“Montsacopa” High School, OLOT, Catalonia, Spain.

5

Renovation needs Building use

Schedule for high school: 

Standard Use: From second week of September till last week of June

Standard Use (class): Monday, Tuesday,  Wednesday, Thursday and Friday

08:00 to 21:30

Current Situation“Montsacopa” High School, OLOT, Catalonia, Spain.

High Priority: building envelop + lighting replacement + PV production

6

Building envelope: WallsBrick Wall

No insulationU = 1,69 W/m².K

Building envelope: RoofSloped steal panel roof with air cavity and insulation.

U =  0,46 W/m².K

Building envelope: GroundfloorGround floor consists of concrete

U =  0,49 W/m².K

Building envelope: WindowsDoubled‐glazed windows with PVC. frames

Uf =  2,20 W/m².K, Ug =  3,30 W/m².K

Current Situation“Montsacopa” High School, OLOT, Catalonia, Spain.

7

Airtightness: No measurements

Heating/Cooling: Fuel low‐temperature boiler with radiators in conditioned spaces

Ventilation: Only Ventilation in bathroomVentilation by opening windows in classroom

Lighting: Fluorescent tubes T8 controlled by users

Appliances: Classroom: PC, Hifi‐videoOffice: PC, Printer, Copy Machine

DHW: Electric tank

Cooking: Cantine with warm meals

2014 final energy consumption kWh/m2 conditioned area (from 

bills, metering etc.):

*47,92 kWh/m² y for heating (from bills)*14,05 kWh/m² y for electricity (from bills)*Total =61,97 kWh/m² per year (from bills)

Current Situation“Montsacopa” High School, OLOT, Catalonia, Spain.

8

Equipment Age and Maintenance Needs

Lighting : Fluorescent lamp T8 installed in build

HVAC/ Boiler: Fuel low‐temperature boiler with radiators in conditioned spaces controlled by users.

HVAC/Distribution Network: no

HVAC/other components Single flow ventilation on bathrooms

HVAC/other components no

Windows Double glazed with PVC frame dating from a replacement carried up ten years ago aprox.

Other Building Components no

Other Maintenance Needs no

Other Renovation Needs Solar shading

Current Situation“Montsacopa” High School, OLOT, Catalonia, Spain.

9

Health & Comfort

Summer comfort: not adapted solar shading and sunscreens, hot in May, June and September

Interior air quality: no permanent ventilation but not identified discomfort

Visual comfort: good because highly glazed and cantilevers for solar shading.

Running Contracts and Management

Running cost: Energy: 23.695,08 €/yearWater: no dataMaintenance: no data

Energy Supply Contract Electricity

Energy Management Contract No data.

Building Maintenance Private contract with maintenance company + local technical staff

Current Situation“Montsacopa” High School, OLOT, Catalonia, Spain.

10NZEB Renovation“Montsacopa” High School, OLOT, Catalonia, Spain.

ZEMedS Goals: ‐ Requirement 1: CPE‐ProdRES≤ 0

Primary energy consumption yearly (heating, cooling, ventilation, DHW and lighting) is produced by local renewable energies.

‐ Requirement 2: CFE≤ 25 kWh/m2 y

FE consumption yearly (heating, cooling, ventilation and lighting) per conditioned area

‐ Requirement 3: Indoor air quality guaranteed (CO2≤1000 ppm) and temperature above 28ºC ≤40 hours yearly during occupancy

National factors for conversion in energy and CO2 have been taken into account (data 2014).

Primary Energy from non‐renewable energy sources covered by renewable energy

0 kWh/m².year 

(annual balance)

Final energy consumption (all uses except DHW & cooking)

CFE  ≤ 25 kWh/m².year

Overheating limited to

40 hours over 28ºC annually

Indoor Environmental Quality (IEQ) is guaranteed

CO2 ≤ 1000 ppm

11NZEB Renovation Status“Montsacopa” High School, OLOT, Catalonia, Spain.

Diagnostic/Currentsituation

Planning Design Companiesconsulting Works Reception

of worksUse and 

maintenance

Actual status referring to the foreseen ZEMedS Renovation Process

Diagnostic/ Current Situation:A preliminary energy consumption analysis and a energy audit were done by Educational Department. The high school staff agreed with a global renovation project but  has not yet searched a engineer company to perform an energy audit. This study is detailing actual energy behavior through energy simulation‐Identifying actual comfort conditions‐Defining the actual energy saving potential of a set of possible measuresThe beginning of works had not yet been scheduled.

12Energy Saving Potential“Montsacopa” High School, OLOT, Catalonia, Spain.

Actual Final Energy Consumption

Consumption by BillsNatural Gas: ‐‐‐‐‐‐ kWh/year = ‐‐‐‐‐‐ kWh/m².yearElectricity:  55.427 kWh/year = 14,05 kWh/m².yearOther Fuel: 189.092 kWh/year = 47,925 kWh/m².yearTotal: 244.519 kWh/year = 61,97 kWh/m².year

Estimation:Specific Electricity Consumption (not including Lighting): 9 kWh/m².yearDomestic Hot Water Consumption: 1 kWh/m².yearExpected Total Consumption after successful ZEMedS Renovation: 145.990 kWh/year = 37,00 kWh/m².year

Final energy consumption (all uses except DHW & cooking)

CFE  ≤ 25 kWh/m².year

Heating/Cooling and Ventilation: 

CHVAC ≤ 20 kWh/m².year

Lighting: Cligh ≤ 5 kWh/m².year

ZEMedS Target

Total Energy Saving Potential Theoretical Saving98.529 kWh.year

Theoretical Gain40 %

13Renewable Energy Source Potential“Montsacopa” High School, OLOT, Catalonia, Spain.

RES PotentialIn primary energy

RES Production Potential13,25 kWh/m².year

System Considerations and Recommendation Potential Production

Photo Voltaic System

South oriented Roof 18,50 kWc PV generator

5 kWh/m².year

Solar Thermal for DHW

XX kWh/m².year

RES Heat Pump XX kWh/m².year

Others XXkWh/m².year

14Recommended Measures“Montsacopa” High School, OLOT, Catalonia, Spain.

NOW Use and management

Demandreduction

Energyefficientsystems

Renewable energysupply

BuildingManagement System

NZEB

Recommended: Energy Audit to start in 2016 to validate the NZEB renovation project for 2017.

15Recommended Measures“Montsacopa” High School, OLOT, Catalonia, Spain.

Measure Why is recommended and what

Glazing replacement Energy savings, increase in envelope insulation and comfort (acoustic, thermal)

Insulation in façades Reduction in heating demand and avoiding moisture.

False ceiling in 1st. Floor.

Reduction in heating demand, increasing in the insulation level of the roof.

Lighting replacement Energy savings, comfort (visual, overheating)

16Specific Features and Remarks“Montsacopa” High School, OLOT, Catalonia, Spain.

Specific Remarks

No specific remarks.

17Funding Opportunities“Montsacopa” High School, OLOT, Catalonia, Spain.

Relevant Information:•Need a political validation and audit information•Budget estimation: to define.

Funding Potential:•Self funding: to define•Regional Initiatives: to define•National Funding: to define•European Direct Funding: to define